How Do I Stop My Chain Jumping?

How Do I Stop My Chain Jumping? | GCN Tech Clinic

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Күн бұрын

Welcome back to another GCN Tech Clinic, with our very own bike tech guru Jon Cannings. This week he covers what to do when your chain is jumping on different cogs, whether water can enter through internal cable routing holes, what a squeaking sound from the rear derailleur might be and loads more too...
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Jon covers loads more this week too including whether you should wash the bike with a hose and how to get the rear wheel out when the derailleur is under a lot of tension. Remember to keep your questions coming in for Jon using #askgcntech. 👇
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Пікірлер: 160

@gcntech 5 жыл бұрын

Remember to keep your questions coming in for Jon using #askgcntech. 👇

@JCLyonmusic 5 жыл бұрын

Hello John, always very interested in your technical advice. For a few days on my handle Shimano Tiagra the brake lever of the rear derailleur has shifted slightly to the side for no reason which makes a space of 3mm with the small lever of the descent speeds. I wonder if it is not the tension spring of the lever that has moved or the cable is relaxed, yet the shifting remains correct and well adjusted. If you have a solution I'm interested, thank you in advance.

@phonenaing1149 5 жыл бұрын

Hi John, I have a disc brake road bike but I bought a rim brake rear wheel which I planned to use for turbo training. The wheel doesn't seem to fit even though they use the same quick release. Why is this and is there any way I can adapt it so it does fit my bike? Keep up the awesome work!

@WhoooDaFuuuuc 5 жыл бұрын

Hi Jon... is the old 105 groupset compatible with the new r7000? currently im lookin to swap my 50/34 11sp chainset with a 52/36. and can i use ultegra or even dura ace jockey wheels instead of 105 ones? or would you recommend some different pulleys in that price range?...maybe bbb's roller/alu boys with ceramic bearings? thank you. Brano #askgcntech

@richardsearle5674 4 жыл бұрын

Hello iv got a bit of a problem with my chain slipping even tho I have replaced the chain, reset my derailluer, its all in line, changes happily until I start riding up hill which it slips can you help

@vrushalideshpande3624 5 жыл бұрын

Thanks for responding to the question.👍

@matyourin 5 жыл бұрын

Great show, ty for all the advice. My question is: I have an old 2x6 road bike and want to switch it to a straight handle bar. I was able to get new break leavers. BUT I have a problem with the shifters. Are there any "rapidfire-style" shifters I can use on the new handle bars instead of those gear shifters down at the frame tube?

@gradyzyner7423 5 жыл бұрын

Jon, your aim is true.

@jacksquat2067 5 жыл бұрын

I think it's worth adding that a binding chain link can also cause your chain to jump. We took my wife's bike to the shop twice for chain skipping, and nobody could figure it out. When we got home, she she asked "Could the chain itself cause that?" It sounded weird but I checked and found a rigid link. Problem solved. 🚴

@chazpilks 5 жыл бұрын

Regarding the last question and your answer to use the etube software, I thought you needed an additional component to connect di2 to etube?

@crazylife6319 4 жыл бұрын

hello!, ive recently purchased a shimano ty500 rear mech (cheap, i know) and it seems to make the chain skip on bumpy terrain. any fixes? or even better a derailleur video that would show me how and which derailleur to choose? thanks!

@ltrtg13 5 жыл бұрын

The question from Lecx about hydraulic disc brakes. Hope d road disc brake. They have the master cylinders under the stem, and normal brake cables go into the master cylinders. The Hope road discs are either the V-Twin or the RX4. The RX4 brake have 4 pot calipers.

@jhjansenhtpc 5 жыл бұрын

Hi Jon, a few days ago on my first outside ride this year I experienced a chain snap while accelerating out of a corner. Made a good sweep but managed to hold on and did not crash. Chain was 105 and still in good condition but it snapped on the plates. Heard that this is quite unusual. What's your opinion? #askgcntech

@stuartwilson8458 5 жыл бұрын

Hi guys, love the channel! I just discovered that my front derailleur shifting woes were caused by the cable guide under the BB and internal routing around it restricting the cable movement. I added a drop of oil/lube. Problem solved! ...for now. Would grease be a better option to combat the wet, UK roads or is it a sign of another issue such as cable wear? Would love a long-term solution! All the best, Stuart

@bizzehdee 5 жыл бұрын

#askgcntech on the shadow clutch mech. what is the difference between the "clutch" and just putting a more powerful spring in the pivots?

@pedroschlude2942 5 жыл бұрын

I need a new rear derailleur hanger for my focus Paralane aluminum frame. Online I can only find the ones for the carbon frame. My Question is: Are they any different from each other? The form is similar as far as I can tell. Could I get away with getting the one for the carbon frame or should I have one CNC machined for a lot more money?

@someguy9520 5 жыл бұрын

Would have sugggested checking the chain for wear and whether the cassette is worn badly. Also, some cassette chain combinations mesh worse than others Have found that YBN sla 11 chains mesha bit rough with shimanno cs m7000 cassettes. Under power it really sounds crunchy. Changed to ultegra and it's gone

@stefanzashev993 7 ай бұрын

Hi I changed my sram red with campa super R On my fifth rear hear the chain jumps when i push the pedals! Di you have some advise for that? Thanks in advance!

@davidheathfield5040 5 жыл бұрын

Shimano rd 9100 problem, I had the same issue with my ultegra r8000. I ended up finding a fix where you loosen the hanger bolt then rotate the whole derailleur back on that hanger bolt and tighten back up to about 8nm. It rotates the derailleur back out of the way and takes up some chain slack at the same time. The same thing has been spotted being done on some of the team sky pinerellos.

@GuanajuatoUK 5 жыл бұрын

Hi John. #askgcntech Always enjoy the little tips. A while back I converted my old 26" mountain bike (ex hire bike, Kona lanai so not great spec) to drop bars. Its got mechanical discs and I've found them really hard to adjust. To get any kind of bite with the drop bar brakes, I have to have the pads so close that they rub. Do drop bar levers (old tiagra) have a different pull ratio from MTB discs? Is there a way I could change this? Also tried a cross race on it early in the season, and it was proper hard work. Would it be possible to fit 700c or 27.5" wheels with narrower tyres into the frame? I've tried my rim brake wheels from my road bike and the physically fit, just the disc calipers (obviously) foul the spokes. Thanks for any advice Ps don't you hate these long taking questions 😇

@davidbarndollar7403 5 жыл бұрын

#AskGCNTech I recently acquired a Wahoo KICKR for winter indoor training. I have my 11-speed road bike attached to it now, but I'd like to swap that out for my older 8-speed hybrid bike for the odd rainy day once the weather improves. What spacers will I need to make the conversion to an 8-speed cassette, and where do I install them on the KICKR freehub (inside or outside the cassette)? Wahoo recommends taking it to a local shop, but I think I can manage this on my own with the right parts.

@peterhans7824 5 жыл бұрын

Hello Jon, I recently bought my first Road Bike to get my feet wet.. It is an old Winora with a Hi-Ten Frame still running the full original Shimano Golden Arrow Groupset from 1980something. Everything is working fine except for the uniglide cassette (6 gears) which is starting to wear. Since i can't buy new uniglide cassettes anymore i am wondering what to do? Is it possible to change the old 126mm hub to a new 130mm hyperglide one by bending the steel frame a little (i read of people doing this on several forums) or is there an easy way to change the freewheel to a hyperglide one? Thx a lot and greetings from Frankfurt!

@minuteman4199 5 жыл бұрын

I had a jumpy chain and it was fixed by replacing the chain. If you chain jumps when you are starting off, or putting a lot of torque on it climbing, it might be because it is worn out and stretched so it doesn't mesh with the sprocket anymore. You can diagnose this by measuring the pitch of the chain and checking to see whether or not it is still in spec.

@eduardoortega2505 5 жыл бұрын

#askgcntech I have a Merida Reacto 300. It is aluminum and it has tiagra on it. Can you recomend me to swap it to 105 or not? What components do I have to change

@darrellwhitford7084 5 жыл бұрын

Hi Jon I was riding a crit race last weekend on a hilly coarse which required using the big ring and the largest sprocket on the cassette. When I was changing down on some of the laps the chain would jump to the small ring. What must I adjust to stop this happening?

@maheshg3077 4 жыл бұрын

Sir my chain jumps while down shifting. Rear side

@ianstanley6069 3 жыл бұрын

Hi, why is my sram eagle jumping in 12th gear but only when putting power through pedals. Gears are shifting fine and pulley wheels are aligned. I have replaced hanger and chain has no stiff links and I've only ridden about 400 miles.

@alanknight6764 3 жыл бұрын

#askgcntech I have a boardman mht 8.9 which has a sram sx 12x1. a recently it has developed an issue with when in top (12), it keeps wanting to jump... And it seems to be when the chain snap link goes round the gear ring. Have tried all adjustments and changed the drophanger all to no success. Any ideas? Thanks

@icyraikkonen2516 5 жыл бұрын

#askgcntech Can I get some tips on how the Shimano "Trim" function works. I have a new bike that has only done about 60km on it and I am getting a bit of chain rub on the front derailleur when in the large front ring and smaller rear cogs - I keep reading about trim but just want to understand how to actually do it. Thanks!

@forresta65 5 жыл бұрын

Hi Jon, I bought an old Parker Pre Hammer from 1991. It has a Deore LX Shimano groupset. The previous owner abused it and ruined the adjustment on the front Derailleur. What modern Derailleur would work to replace It. The rest of the groupset works well so I don't really see replacing the whole set. #askgcntech

@ukheang 5 жыл бұрын

Dear GCN. I would like to ask. Do I need to change the new chain if I switch from 52/36 to 53/39 chainring? And I also change to oversized pulley wheel too. Thanks. Right now I'm running ultegra Di2 with 52/36 and 28 rear. Thanks #askgcntech

@abitofthisabitofthatwithda5379 2 жыл бұрын

Every thing is new and slipping/jumping in the smallest gear only. Any thoughts how to fix the issue?

@KeylorGR 5 жыл бұрын

Hello John. Commenting from Costa Rica. Love the show! I have a 1982 Benotto and im having a serial case of punctures, almost 1 per week... on the back wheel. I have checked tires, rims, brakes and havent found the reason for it, always keep psi to 90/100, my weigth is 100kg, is there something i could be missing? #askgcntech

@DRU_Hards 5 жыл бұрын

#askgcntech Hi Jon, I want to upgrade my 9-speed cassette to 11-speed. I know I need all new drive components (cassette, chain, derailleurs, chain rings, and shifters), but what do I need to do with the hub for the cassette? Get a new hub and rebuild the rear wheel, or should I look for a new wheel set up with a 11-speed compatible hub on it already? The bike is a Cannondale CAAD8 and want to go with a Shimano 105 group set. Thank you

@gulfcitynd 5 жыл бұрын

#askgcntech I want to swap my rear mech out to a Shimano derore without changing the gearing out it's a 8 speed block would it work

@camdjkim 2 жыл бұрын

#askgcntech Hi JOn, I have a sram xo 1x12 drivetrain. WHen Im on the largest cog and backpedal the chain wants to drop to the smaller cogs. WHat is causing this and how do i fix it? Thanks

@billc7211 5 жыл бұрын

Hi Jon, I was surprised that you actually referred to cables stretching in the video. It's my impression that cable systems settle in after being installed, with the ferrels aligning better with frame lugs and component receivers, but that the steel cable cores themselves do not actually stretch beyond their elastic limit. Ultimately, over time, the cables also tend to wear into the ferrels and cable housing linings, and may also fray at the clamping points, all of which might be counter-acted with some barrel tightening in the short term. So maybe cable "stretch" is really more of a generic term for all of this other stuff going on?

@princeyunus-786mzimela6 4 жыл бұрын

#GNC ola brother I am yunus all the way from southern Africa I'm having a problem with my joky and the cable when I shift to the smallest gear cable gets lost thank you

@deanandrews7990 5 жыл бұрын

#askgctech Jonny boy...HELP!! I’ve got a Canyon SLX Ultimate with the Grand T blue matt paint job - looks the business for sure but despite taking care of it and trying to look after the paint job properly (ie no wax etc) I am struggling to clean, what looks like water stains (actually gels and sweat) off the top tube. I’ve brought all the bike washes recommended, even tried mild degreaser but as soon as it dry’s...sigh...there they are, those pesky stains. Besides the patent pending JC elbow grease what can be used to clean Matt paint back to show room condition inc removing sweat/gel/drool/tears?

@milanbabic92 5 жыл бұрын

Hi Jon/Oli, saw some light disc brake rotors online, they weight around 140-150g for a pair. They have bigger cutouts on the brake surface than other rotors and probably less thickness. Does they wear out brake pads faster and how safe it would be to use them, are they worth the savings? #askgcntech

@epigraphic8862 5 жыл бұрын

#askgcntech Hi, I am a rider of (really) quite short stature, and have bikes of two frame sizes. I notice my legs ache a bit more after a long ride on the larger frame size. Would swapping the stock 170mm cranks for 165mm make a noticeable difference? I run Ultegra, and it seems quite a price to pay for a 5mm difference.

@cupiddstunt 5 жыл бұрын

Hi Jon, Ok I’ll start by saying I am a pensioner on state pension so not a lot of cash flying around, that being said I understand I may need to spend some. I have just bought a second hand cycle and when I got it home and gave the drive train a damned good clean and look at I found the chain was beyond stretched and so replaced it along with the dropout for the rear derailleur as it looked bent. Since doing that the chain is jumping while under load while cycling, and when it’s up in the work stand and I am changing from little cog to big the bottom jockey wheel starts to click at about cog six and just chatters louder the bigger I go. Do you think these are related or co-incidental? it cycled home about 30 miles with little issue other than sluggish gear change and crappy breaking which I just thought ok no great worried as new cables and housings should sort that out.

@ashleymills4956 3 жыл бұрын

Hi my chain seems to be slipping across from large front chain ring to smaller one when I put it under load ie stand up to peddle (Dura ace 11speed)

@BlokeOnAMotorbike 5 жыл бұрын

#askgcntech what's the best way to prep a bike for long term covered storage (a lockup for 3-4 months)?

@garytilley3867 5 жыл бұрын

I have Ultegra Di2 on my bike and of late the shift / brake levers have developed a rattle. particularly annoying on rougher roads. Do you know of anyway to quieten them down? Shimano Australia when contacted said to contact your LBS. They don't know either #askgcntech.

@EuanMunro 5 жыл бұрын

#askgcntech hey John, sorry if you've had this before, but how come whenever I'm indexing my gears they ways shift great in the workstand but when I'm riding there never quite right?

@ChrisCapoccia 5 жыл бұрын

There is a third thing that could cause skipping gears. If the cassette is very old, the teeth could be worn down and cause skipping

@HarryTzianakisTheGodOfSpeed 5 жыл бұрын

if the rim is not installed straight it will skip as well being that chain and cassette are on an angle..

@percyveer2355 5 жыл бұрын

i'll add a fourth cause of jumping gears. spent ages trying to resolve this issues, turns out my cassette had become slightly loose. a wee tighten, good as new.

@jamelpiclit3062 3 жыл бұрын

Hoe about, bike ghost shifting under load... It skips and when I stop it is in the right gear..

@jamelpiclit3062 3 жыл бұрын

It shifts under load for like a split second, then it quickly goes back to the right gear.

@henryheavisides 5 жыл бұрын

Hi Jon. I have 3 different bikes with thru axles & all of them have different size rear wheel axles. Is it possible to convert the axles so that I can use the wheels on different bikes or are the wheels bike specific? Thanks #askgcntech

@mattobrien8718 5 жыл бұрын

#askgcntech Hi John, I have had issues with the heal of my shoe rubbing the chainstay, particularly on the right side. It appears I have toe out feet! I've played with cleat position but I struggle to get comfortable and be clear of the stays. I have recently changed shoes for DMT R3s, which has helped some, but am now cunsidering Ultegra SPD with the extra 4mm axle. Have you heard of this issue and will these pedal help me.

@Girik8040 4 ай бұрын

Hey, on 2nd gear, when put pressure the chain skips and falls down to 1st

@scott7447 Жыл бұрын

Hi John chain keeps jumping when I'm hard peddling doesn't jump gear but it's happening quite a lot

@trestleoaks 3 жыл бұрын

#gcntech Hi, I just today bought a new GT dirt jumper, what’s happening is that when I jump the chain hits the frame. I want to fix this so I can get full potential of the bike. Thanks

@qpghostqp9551 4 жыл бұрын

I have a brand new bike where the it is skipping not sure why, looked at the teeth on the main gear and thought it was defective as some looked smaller then the rest like they were chipped off. Any ideas on why a brand new bike would be doing this ?

@callumph 5 жыл бұрын

Hi #askgcntech - a slightly not quite bike related but still close enough question: I seem to get a very short life-span from my bib shorts. I do 400+ km a week, and have multiple pairs, but after not very long, the elastic seems to stretch, and the stitching begins to wear. I use RedWhite bib shorts. Am I washing them wrong? I'm very tall (195cm) but also very skinny (74kg) so I have to wear a medium to have them fit right. Any tips?

@oreocarlton3343 5 жыл бұрын

If your chain is jumping you should change the entire bike before it explodes, no need to risk it - NEW BIKE! #askgcntech

@peterhans7824 5 жыл бұрын

#askgcntech Hello Jon, I recently bought my first Road Bike to get my feet wet.. It is an old Winora with a Hi-Ten Frame still running the full original Shimano Golden Arrow Groupset from 1980something. Everything is working fine except for the uniglide cassette (6 gears) which is starting to wear. Since i can't buy new uniglide cassettes anymore i am wondering what to do? Is it possible to change the old 126mm hub to a new 130mm hyperglide one by bending the steel frame a little (i read of people doing this on several forums) or is there an easy way to change the freewheel to a hyperglide one? Thx a lot and greetings from Frankfurt!

@prestachuck2867 5 жыл бұрын

“I knew someone who was pranked when his friend reprogrammed his di-2 shifters the night before a big ride, and the next day I couldn’t figure out how to shift my bike.” LOL

@lodvaessen 5 жыл бұрын

Hi guys, coming july i'm Going to france riding my bike in the mountains. I consider to use my full carbon wheels because they are light. I also have a mavic wheelset with carbon rims and aluminium brake surface. And a set of full aloy fulcrum wheels. Whitch set should i take to france because of the heat building up during a long descent. I am a good descender but not a pro. #askgcntech

@giellekefietst3999 5 жыл бұрын

When cutting through Carbon with a saw, use the paper tape (used by painters) on the spot where you want to cut. Also a new, sharp blade with small teeth. Big theet will start to de-laminate the carbon...

@ragzard 5 жыл бұрын

Hello Jon/Ollie. I got my first and brand new road bike 6 months ago, took it to a big city to be professionally assembled, brought it to the countryside where I live and enjoyed it since. Last week I noticed a stiff front hub. Took it to my local bike shop, the mechanic disassembled it and the cone is pitted. He said the issue is that the hub (from a Shimano WH-501) have too many ball bearings from the factory and took one from each side, from 11 to 10 balls. When I got home I searched at online foruns and the subject is complicated. Some say "fill it with the ball bearings" other say "fill it and take one out". Its a big can of worms. I got the exploded diagram from Shimano site and yes, 11 is correct. Do I leave it with 10 or take it back to put the extra ones? What might have been the cause for the issue? Love you guys. I owe you a beer. #askgcntech

@jonathanzappala 5 жыл бұрын

Welves Maia I got a giant with 10 balls in the left and 7 on the right (rear hub where it should be 9 and 9). I should have have taken it in for warranty. But fixing it didn’t last the hub never gave t back to new, the cups were ruined and new cones keep putting. It’s now my trainer wheel. This is why I won’t use shimano hubs (but this was not a shimano hub), sealed cartridge for me only. I fee for you.

@jonathanzappala 5 жыл бұрын

But I got new cones and put in a new set of the correct number bearings. But I would try to get a new wheel out of them for the mistake.

@tanbafootballfc 10 ай бұрын

My elliptigo msub chain jumps a bit only in top gear when my left peddle is pushed downward on the front large cog. It's a new bike out of the box

@jibranjawaid 5 жыл бұрын

Hello Jon, I have an ITT event coming up and have a Cervelo S5 Dura Ace Di2 9070 bike as the only option to use for it... I have the Zipp SL-70 handlebars on it and want to put the TT/Aero Clip On bars on it... Wouldn't want to change the entire cockpit as a quick option would be better for using it both for an ITT and Road Race without having to change the entire set up... are there any clip-on options that are safe to use on the sl-70 handler bars? If not and I have to change the entire cockpit are Ultegra tri brakes compatible with the duraace and will the new 9170 TT shifters work with the 9070? #askgcntech

@hansintakt5228 4 жыл бұрын

Hi, i have looked around and not found an answer. Quick trouble description: 1) purchase of a used Giant Ocr 2.0 from ebay bike is in very good condition, tiagra 3x9 speed rode it at everything seemed fine, decided to replace the chain by principle 2) replaced the tiagra chain for an ultegra one (HG93, 9s) fitted the length comparison with the old chain. trouble: upper, lower frontal chain rings work fine, but using the middle frontal and most of the backside chainrings, most immediately the more middle ones, the chain "slips". i cannot describe it well, it seems to slip one chain link to the front, it doesnt chain gears. going by the logic of some trouble shooting videos, the chain at that composition has slack, that is: i can form a "z" with the chain and could reduce its lenght as some people suggest is the cause. But the lenght of the chain fits the logic of the setup-videos that say: biggest frontal chain ring and biggest backside (lowest gear) and if there (!) you cannot form a z, the chain is short/long enough. Now i wouldnt guarantee that it didnt slip before. maybe i just used the biggest frontal ring, but since i rode within the city, i would tend to "it didnt slip before". is there anything special with 3x9 speed setups that cause this? the derailleurs seems properly aligned according to standarts. has anybody had this before? thx for replies!

@washimaktar8673 5 жыл бұрын

#gcntechclinic, hi , i have a merida scultura 500 , with (50,34) chain ring and , i want to change with a standard setup, is it possible?

@savasanibal1354 5 жыл бұрын

#askgcntech Hi guys,Love the show but this is third time I am asking my question and you don't answer. For Paris-Roubaix sportive,to prevent the chain dropping from big ring to small,is the Ultegra RX8050 rear mech is a solution? I am using Dura-Ace Di2 group set .Thank you.

@hughbriz 5 жыл бұрын

Would just say about water trapped in the frame , that usually fine grit and dirt comes with it. If you tip the bake upside down this may get into the headset bearings resulting in a nasty grinding noise (and no doubt wear on the bearings). Just be careful which way round you tip it. If there is a drain hole in the bottom bracket it might be blocked. The above used to happen to me one one frame and it could easily acquire a pint or two of water on a wet ride -added to the weight!

@grumpy-dad3701 3 жыл бұрын

I've found my 8th gear on my Scott aspect 940 when giving a peddling faster

@nicks6871 5 жыл бұрын

John! how could you not recommend the king of mechanical disc - the BB7?

@adttrdat2212 5 жыл бұрын

BB7's are crap cos there is a piston on 1 side only. Trp spyre is the answer.

@noelpizana8765 3 жыл бұрын

#askgcntech I have a 3x9 speed MTB bike , whenI driving it and I shift the rear gear in 1 to 6 there is no problem and in 8 to 9 gear also, but when I shift the gear in 7th gear the chain always skipping / slipping but not jumping , even if I change the gear in my crank in 1 and 2 gear. I thought thats my cogs problem a factory defect problem. is that posssible. I hope you can help me with that Thanks. PS my Cogs is Brand new and my Crank also

@benazzouzzakaria1696 3 жыл бұрын

my mtb s chain makes a noise like crack when applying pressure to it like on an uphill or when speeding while standing up any fix? thanks in advance

@jeprox8000 2 жыл бұрын

I have the same problem

@lecxarcangel5644 5 жыл бұрын

Hey Jon! I was thinking of getting a power meter.. What's the best power meter for a newbie? Something on the affordable side but is also accurate and I could attach to my 105. Thanks Jon! #askgcn

@markxkovacic 5 жыл бұрын

Stages

@NastyNatty48 5 жыл бұрын

I'm interested in getting some ceramic bearings for my bike. We all know that CeramicSpeed is the biggest name when it comes to ceramic bearings, but they are really expensive. So is their any other ceramic bearing companies that are as good as CeramicSpeed, but are cheaper? #askgcntech

@MrKruucks 5 жыл бұрын

#askgcntech I recently bought a gravel bike that uses QR hubs/wheels. I’m in the market for dedicated gravel wheels, preferably 650b, but want the option of using them for a future thru axel equipped frameset. Are thru axel to QR adapters universal or do I need a wheelset with special hubs that can accommodate both?

@markxkovacic 5 жыл бұрын

There are not universal adapters and are specific to the manufacturer. Get wheels that include the adapters like DT Swiss.

@mnbv5555cxz 5 жыл бұрын

#askgcntech Hi John, great show. I have Shimano Di2 r8070 (love btw) and I understand I can add relatively cheaply the bluetooth module EW-WU111. Can you comment on the added functionality of the wireless option. What does it add? how well does it work? is it a gimmick or a useful addition? thanks! Oh yes at my Di2 is mounted to a beautiful Celeste Bianchi XR3 ;)

@arthurbown-mazzoni 5 жыл бұрын

#askgcntech I was wondering what the difference between flat mount, post mount and direct mount disc brakes is?

@markxkovacic 5 жыл бұрын

Direct mount brakes are the latest generation of caliper brakes. Post mount disk use the mountain bike standard and where designed to support up to 200 mm disks on a mountain bikes. Flat mount disk brakes are designed for road/gravel bikes, sit closer to the fork and chain stay and are more aero. Designed to for 140 and 160 mm disks.

@RobertSmith-gt2vw 3 жыл бұрын

Please I want to know what is wrong, when you are riding your bike on high gear the pender will be jumping

@richardschultze650 5 жыл бұрын

Hallo Jon, thanks for the great show. I am riding a Shimano 105 with an 11/32 cassette. Can I use a Shimano HG700 11 speed cassette 11-34 instead? Thanks! #askgcntech

@markxkovacic 5 жыл бұрын

If you have a mid cage derailleur it will work fine. You will have to adjust the B screw so the upper jockey wheel clears the 34 tooth sprocket. If you have a short cage use a Wolftooth Roadlink to gain the necessary clearance.

@richardschultze650 5 жыл бұрын

@@markxkovacic Thanks a lot Mark. Then I will go for it. #askgcntech

@michaellee439 4 жыл бұрын

i just bought a new bike and the chain keeps slipping as i pedal the bike. Please advise

@bethprideford3966 5 жыл бұрын

#askgcntech - Hi GCN, my elliptical trainer bit the dust and I am thinking about switching to an indoor bike trainer. Do you have any recommendations? In the GCN training videos there is a large variety so I am wondering if any of you have favorite ones?

@markxkovacic 5 жыл бұрын

I have had good success with the Kinetics Road Smart 2 trainer.

@Cooktime30 5 жыл бұрын

#AskGCNTech Hello GCN, I seem to have a bit of shaking in the head tube area when using my front brake. It only happens above a certain speed. Any idea what that could be? Thank you!

@flyingturtle4559 5 жыл бұрын

Chauncey__ It sounds like you may need to tighten your headset bolt (the bolt on the top of your front fork.) To diagnose if that is indeed the problem, put your bike on solid ground and grab your front brake so that your front wheel cannot roll, then with a firm grip on your handlebars try to push and pull your bike back and forth. If your headset bolt is loose you will feel the fork rocking back and forth in the head tube. To fix that you will need to fully loosen the pinch bolts of your stem that grips the top of your fork steerer tube then, with a 4mm hex wrench tighten the bolt at the top of your fork. Don't over tighten, just do small 1/4 turns then tighten the pinch bolts on your stem and repeat the rocking back and forth test.

@markj.a351 5 жыл бұрын

#askgcntech I've taken my road bike out for the first time after winter. When I stop pedaling the derailleur moves forward and the chain goes super slack. It was perfectly fine before winter and the wheels and group set were both new in summer. I've tried indexing my gears but the problem persists. What could be causing it? Thank you.

@jeffvadar6335 4 жыл бұрын

Hi Mark, I've the same problem, did you find the problem and solution?

@briansussum4509 5 жыл бұрын

#askgcntech don’t know whether or not this is me over thinking but going off jumps and just simply dropping the back of my bike the chain is incredible jumpy

@markreams3192 5 жыл бұрын

It would be very difficult to get a straight cut on a steer tube without using a saw guide. The Park SG-8 saw guide is specifically for this purpose. This model is for cutting carbon steer tubes. The cost is $42.95. It may be easier to have a shop make the cut for you. If you do it yourself it would be best to use a blade made for cutting carbon fiber.

@SanSanmarcos1977 5 жыл бұрын

#askgcntech when do you change a bottom bracket? i ride only in dry weather

@lisapet160 5 жыл бұрын

The bottom bracket will literally tell you, when :) So, just enjoy your rides. Unless you have a press-fit model, which may start squeeking way before it's worn out.

@llandor 5 жыл бұрын

Got a new fork (Rodeo Labs Spork), it's a tapered (1-1/2" - 1-1/8") and I struggle to get the lower part of the headset to "fit" down on the tapered end. I know it's the right size, but I can't press it down long enough, so the fork end up 10mm "off" the frame. It's a full carbon fork, so I'm not comfortable trying to sand off some material off the fork to fit it... Any suggestions? #askgcntech

@llandor 5 жыл бұрын

And by lower part of the headset I mean crown race (just found out what it's called :)

@erikwolfe3187 5 жыл бұрын

Hi gang... I have a Cannondale Synapse w/ BB30 and C'dale chainset. I want to replace it with an Ultegra FC-R8000 one. I understand from research on the interwebs that BB30 and Shimano are not compatible. There are some conversion BB's available, as well as some press-in shims. Are there other options? What's the best solution? Thanks guys, keep up the good work! #askgcntech

@markxkovacic 5 жыл бұрын

Wheels Manufacturing has the best solution to a creak free conversion. BB30 to 24 mm Shimano Bottom Bracket

@haidelber 5 жыл бұрын

Hi John! You often talk about using cheap degreaser for cleaning bike parts (chain, cogs etc.). What exactly are you using for that? If you research different degreasers online you get overwhelmed with all the different options. Currently I use kerosene (or however this is correctly translated to English) but it's problematic to dispose the residue. I'd prefer something I can pour down the drain in the end. #askgcntech

@theidt925 4 жыл бұрын

Get some simple green! Or some purple power!

@bizzehdee 5 жыл бұрын

I had the chain jumping round on the bottom 2 cogs at the back when i did a groupset swap from 8x to 10x, and then accidentally put the 8x chain back on the 10x drive train. That was a frustrating 3 days...

@jameswolfe2009 8 ай бұрын

My chain keep failing off after I jump off a crib I have nakto 26 ranger e bike

@FACFERAC 4 жыл бұрын

#askgcntech My chain broke, I bought a new one, same model, but the new one keeps jumping in the same cog of the Cassette, specially the lower gears. The old chain never had any issue. (SRAM GX x12) They told me that I have to change the Cassette, but It is just 4 months old. Others tell me that I have to keep using it and It will stop jumping. What should I do?. Thanks a lot

@Lunarpollo5622 3 жыл бұрын

Maybe the chainring is worn or stiff links

@janraceinfante1696 3 жыл бұрын

#askgcntech sir when I shift my rear cogs in 9speed it's jumping

@slimey831 3 жыл бұрын

Same i have a 7 speed and it skips in 6 and 7

@packmangamer4852 4 жыл бұрын

My bikes chain jumps a lot in low gear What do I do

@Curling_Rack 4 жыл бұрын

replaced my chain and the 2 pulleys (gravity + tensioner). The chain still jumps under load (riding the bike), but doesnt jump + shifts smooth when i calibrate the derailleur on the bike stand? LOL

@dikembiekreislermacavintag474 3 жыл бұрын

same issue for me

@jeprox8000 2 жыл бұрын

@@dikembiekreislermacavintag474 have you figured this out?

@dikembiekreislermacavintag474 2 жыл бұрын

@@jeprox8000 yes, New cogs + new chain = good new cogs + old chain = jumps new chain + old cogs = jumps then check if your chain ring is already used it'll cause chain jumps too.

@jeprox8000 2 жыл бұрын

@@dikembiekreislermacavintag474 what about my chainring that is used for just one month? Can i still use this? I had changed my cogs and retain my one month old chain and it got me jumping on the 3rd gear under load.

@arnecarrette8624 5 жыл бұрын

hi john. I have ultegra r8000 mechanical on my bike and I often experience a shifting problem. The problem is that i can't shift to my big chainring, the shifter won't go all the way, it is as if it is blocking. I've had this issue a couple of times and by touching the cable inside the shifter and moving the shifter lever at the same time it is usually solved, but now that is not working any longer. I already tried to get some WD-40 in the shifter but that isn't working either. Thank you and love the show!

@GS-yz8il 5 жыл бұрын

Hey Arne, I have the same issue here with Ultegra r8000, the left shifter stopped clicking and won’t shift at all, I did the WD40 thing too and this helped but the problem has come back. The bike is only 6 months old with no prangs or dink’s, I too am at a loss as to why this is happening. Any advice GCN Jon?

@LUCYDIAMONDBOXER1 5 жыл бұрын

I had this same issue when the left shifter suddenly stopped shifting the chain to the big ring. I tried all remedies, tweaking FD, WD40 in shifters etc etc.... Long and short, you both have faulty shifters and should be returned to Shimano or a Shimano wholesaler under warranty. The inner mechanical "paws"have failed so its either very stiff to shift or doesn't realign after you shift. I had a new pair of Ultegra R8000 sent to me within a week of the LBS sneding them back

@LUCYDIAMONDBOXER1 5 жыл бұрын

@@GS-yz8il its a manufacturer warranty return issue.

@arnecarrette8624 5 жыл бұрын

@@LUCYDIAMONDBOXER1 thank you for your feedback. I finally understand the problem I'm facing. Also glad to hear that I' not alone haha. I will go to my local shimano retailer. Thank you, your help is very much appreciated!!😀

@LUCYDIAMONDBOXER1 5 жыл бұрын

@@arnecarrette8624 If you are UK based they estimated a 3week turnaround but if you tell the LBS to state on the return "urgent", they will sort it in 48hrs.

@stevezodiac491 5 жыл бұрын

Why can a bottom bracket on an extremely low mileage (1400 m ) carbon fibre cannondale super six evo creak under load, on a rear wheel off smart trainer (tacx neo ) but not make any sound at all, when riding it on the road no matter how hard I try ?

@markxkovacic 5 жыл бұрын

There is more frame flex with a static trainer vs out on the road where you let the bike move from side to side under acceleration. The Kinetic rock and roll addresses this situation and attempts simulate the real world.

@stevezodiac491 5 жыл бұрын

@@markxkovacic Must be, is a steel frame more suitable for the turbo, would it be less creaky or not creaky at all ?

@markxkovacic 5 жыл бұрын

@@stevezodiac491 Maybe. I just think that your BB is probably the culprit on your carbon bike and that is where the creaking is coming from.

@Tubercyclosis 5 жыл бұрын

I have a friend (ha ha) who routed his cable under the wrong side of the derailleur cable-clamp-screw (don't know the official name) on a 6800 Ultegra Shimano road derailleur. As a result, the angle of the cable between the end of the sheath and the clamp changed significantly as the derailleur moved between gear positions. So, the shifter moved the cable a preset, static amount, but the amount that the derailleur moved changed depending on the angle of the cable at the end. The result was that the derailleur could not be aligned for all the gears; it would skip at the low gears if the tall gears were aligned and vice versa. I think SRAM derailleurs have a system that prevents this mistake - at least, on the XX1 MTB derailleurs, there's a channel that makes it impossible to mis-route the cable - but the older Shimano 6800 does not. It should be obvious, but "my friend" somehow missed it. I just thought I'd mention this in case somebody else's "friend" made the same mistake and is trying to figure out why they can align some, but not all, the gears...

@markxkovacic 5 жыл бұрын

Always look for the groove on the washer under the head of the hex bolt That is your clue to the correct position of the cable.

@DrBreezeAir 5 жыл бұрын

#askgcntech Hi Jon! Please help! I’ve got the 2015 Crux with QRs and I’ve recently bought DT Swiss C1800 wheelset and Shimano 105 geoupset. I can’t for the love of God figure out which QRs to get for these wheels. They say it should be 9x100 for the front and 10x135 but I can’t find such QRs even on their own website.

@virtualmartijn 5 жыл бұрын

The C1800's are a 12mm thru-axle wheel for disc brakes. There isn’t a QR option for these and with disc brakes wouldn’t that put too much strain on the QR skewer anyway? Did you get an earlier version of the wheel or am I missing something?

@markxkovacic 5 жыл бұрын

@@virtualmartijn My C1800 wheelset came fitted with 12mm Thru-axle and the end caps to conver to QR or 15mm TA

@galenkehler 5 жыл бұрын

Peter says he has to "deflate the tire to get the rear wheel out". I'd bet money he has a tire that is too big and is binding on the frame by the bottom bracket when it slides forward.