Tighten Bolts Correctly On Your Mountain Bike

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Tighten Bolts Correctly On Your Mountain Bike | GMBN Tech How To

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6 жыл бұрын

Over-tightening bolts can damage your MTB, and is easily done when using a normal Allen or Torx key. This can be avoided by following Doddy’s guidelines and most effectively by using a torque wrench.
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We’ve all done it, damaged the head of a bolt, stripped a thread or even damaged the components you’re assembling. It can be avoided using normal tools however using the correct tool, a torque wrench, is the best option. Doddy talks through methods for both options to help you keep your Mountain bike in good working order, but most importantly, in a safe condition.
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Пікірлер: 115

@ThunderStruckMTB 6 жыл бұрын

Also, don't use the ball end of an allen wrench to apply final torque to bolts that require higher levels of torque or you will begin to round out the bolt's head.... Use the flat side of the wrench as that's what it was designed for.

@PedroFTeixeira 6 жыл бұрын

Here's a tip I've been using for years for brake levers and shifters: leave them a bit "loose", tighten them enough just to be in place. If you fall, and the levers hit the ground they will "spin/move" instead of bending or braking. EDIT: Posted this before the end of the video... Doddy mentioned on the end. :)

@joseadamputu3558 13 күн бұрын

thx for the tips Dude

@robertdaborn5975 6 жыл бұрын

A hack I do is, make a label with a label maker of what component and the nm for it and then slap it on my repair stand, this has saved me lots of time as a lot of the parts on my bike does not have nm printed on the side, so I don't have to try and find the manual for it or find it out online when I forget. But this might not be much help if you work on many bikes

@gmbntech 6 жыл бұрын

Great thinking. Very solid hack.

@_Steven_S 6 жыл бұрын

Done a similar thing as I was building my new bike, except in to a Google Sheet then printed a copy to put on my fridge 🤙

@cyclingfreak56 6 жыл бұрын

That's brilliant!

@TSAlessi 6 жыл бұрын

Robert Daborn i

@willbennett7107 5 жыл бұрын

I recently got a torque wrench and I am soo shocked how tight I have been doing the bolts Everyone needs a torque wrench

@nickwatkins5227 6 жыл бұрын

Great video Doddy will definitely look at getting a torque wrench this week thanks for all those tips cheers 🍻

@gmbntech 6 жыл бұрын

Thanks for the comment Nick!

@ikerteuscher 6 жыл бұрын

Great vid as always, however you forgot to mention that most torque wrenches don't work both ways and you can ruin your's if you try to loosen bolts. Also it wise to release the pressure of your torque wrench every time you put it away, cheers.

@b.s.adventures9421 6 жыл бұрын

Great tips Doddy. Derailer hanger bolt, Chain ring bolts, shock bolts, suspension pivot bolts, and saddle clamp bolts are ones I see on the regular at the shop.

@jayryan7473 2 жыл бұрын

So you're saying you've seen a bolt 👏

@1stFlyingeagle 4 жыл бұрын

One thing I find with spring-loaded torque wrenches. When done using it. un-wind the adjustment so the pressure is off the spring. This lets the spring stay in its natural state.

@guyd4067 6 жыл бұрын

I knew all of this, but I still found Mr Dodd strangely compelling. He is a really good presenter and teacher.

@chapman7804 5 жыл бұрын

thank you for a great vlog I've subscribed and hit the bell button

@Hunter_Bidens_Crackpipe_ 6 жыл бұрын

My derallieur hanger worked itself completely loose. The clamping force of my axle was the only thing keeping it in place.

@mortonfrankfire5400 6 жыл бұрын

It’s interesting you post this today. My motor had started to come loose from my frame and I found one of the bolts floating round in the motor case. 🤦🏻‍♂️

@philipplay1054 6 жыл бұрын

Hey Doddy great video but I think you should have mentioned that when buying a torque wrench to check if it works both ways. I myself had that problem when trying to tighten my pedals.

@breuer2j 4 жыл бұрын

My pedals are seized and rusty af the mountain bike was neglected for a few seasons and left under a deck. Any tips on loosening the Allen key bolt? Also the other pedal has a bolt that requires a crescent wrench. Thanks for the vids you and the mustache guy have been killing it and helping huge!

@crazytrutas 6 жыл бұрын

Great one Doddy! Thanks mate.

@gmbntech 6 жыл бұрын

Our pleasure! Thanks for watching and commenting.

@matfly4832 3 жыл бұрын

Awesome, thanks man 🤘

@dicksplatts007 6 жыл бұрын

Right timing! I've just come from a ride where my handlebars rolled due to loose clap bolts, just as I cased it on a 4ft hip gap

@gmbntech 6 жыл бұрын

Ouch. Hope you're alright. Hope the bike's going to be OK too!

@derekdeclercq 6 жыл бұрын

Great info! If you check a bolt with lock tight, could this potentially break the bond if it moves a fraction? Should I rather just always remove these and reapply lock tight again?

@jcarlson2727 5 жыл бұрын

for the steerer to stem and stem to bar interface, fine sand paper (1000 or 1500 grit) does wonders... always sanding in a straight line against the direction a part could potentially rotate (vertical on a steerer/adjacent surface, horizontal on a bar/adjacent surface). Just to remove the gloss. The fine complimentary scratches will lock the pieces together when clamped. Clean with alcohol after sanding - no grease! However, grease the underside of the bolt heads and bolt threads well for accurate torque specs. No slipping, ever. Worked in a shop for many years. Especially useful for slipping road bars. Of course, this may affect resale and do at your own risk - use the anti-slip grease if you're more comfortable. That being said, performance wise, this method works better than anything else. cheers.

@luclapierre618 6 жыл бұрын

awesome vid

@corbinmcmullin_mtb6900 6 жыл бұрын

Hey can you guys do a vid on internally lowering forks ,I wanna build up a dj frame and would like to know how for that build thank you.

@b.s.adventures9421 6 жыл бұрын

Square taper cranks 8mm fastening bolts are a super common one too. Especially on the left crank. Almost always loose.

@darelldoneza1814 Жыл бұрын

Should we tighten these crank bolts super tight?

@nicom4996 6 жыл бұрын

Nice vid

@sj_leee4995 6 жыл бұрын

how do i install volume spacers on a rockshox deluxe? i opened it up and seems to be different from the monarch

@scottcampbell10 4 жыл бұрын

8:40 I have this exact problem with my Mega. The rear shock bolt needs tightening after every ride because it’s always working it’s way loose. Even with the thread lock in

@mennoglas2463 6 жыл бұрын

What is the most commonly size cone wrenches used to service a hub.

@medicman3769 4 жыл бұрын

Doddy I really need your help I have an Allen key rear thru axel I dont have a torx wrench only a hand multi tool what's a genral mark to know when you've hit 11nm

@woduk 6 жыл бұрын

Even using proper tools you can’t help but on occasions round a bolt sometimes I’ve found bolts to be too soft alloy ones especially.

@RocketMagnetUK 6 жыл бұрын

The small pre-set park torque wrench 4-6Nm is a Cam over so you can't over torque. The normal "click" style you can and just like a lit firework never go back to it once it clicks don't give it another tester click... general good practice is to go to your desired torque in increments.. 50%>75%>100% and remember to store you Torque wrench at its correct storage Torque or you mess up the calibration (normally it's lowest claimed setting e.g. 2Nm for a 2-20Nm TR.).

@sj_leee4995 6 жыл бұрын

love those nukeproof megas

@cameronlesley2428 6 жыл бұрын

Hi Doddy a great video. Where can I buy a torque wrench system ?

@1stFlyingeagle 4 жыл бұрын

So where are the setting specs for the seat, handlebars, seat post, brake levers? I did not find those specs from trek. found lower-end components.

@wulf67 4 жыл бұрын

Exactly what I came for and still can't find.

@Wolfyy0420 6 жыл бұрын

I've head my rotor bolts come loose on a really hot day, while hiking to a hill and sending it down on a trail. My brakes squealed alot back then, they were old avids, so I didnt think much about them that day. My marzo bombers got eaten away by the bolt come loose. Thankfully it didnt crack but it ate a good 5mm away from the legs :/ Noticed it at home only

@fabianleguel2960 Жыл бұрын

Is there a guide of newton's to use the tool?

@simonchaddock3694 2 жыл бұрын

A bit off topic but i did not know that wheelsize includes tyre aswell well it does on mine is this normal pls cheers

@RedElectric3 2 жыл бұрын

What nm do I tighten my caliper bolts after I go to realign the break calipers? I can't find the specs on it...

@aniaggarwal2433 6 жыл бұрын

#AskGMBNTech what difference does a thru axle make when compared to a quick release axle?

@cyclingfreak56 6 жыл бұрын

The medium torch wrench is more subtle old bean not less! Definition of subtle subtler play \ˈsət-lər, ˈsə-tᵊl-ər\; subtlest play \ˈsət-ləst, ˈsə-tᵊl-əst\ 1 a : delicate, elusive a subtle fragrance b : difficult to understand or perceive Love the show BTW! Keep'em coming :-)

@user-ry7wf4hi9w 2 жыл бұрын

GMBM TECH. Hi its not a mountain bike question but where did you get your watch from?

@anonymouspeoplesuck6403 6 жыл бұрын

Intense sends you a really good torque wrench

@itsmenohandle 4 жыл бұрын

I just used mine on the stem today and the click is really subtle, hoping it’s not to loose! 🤦🏻‍♂️

@Pr1nc3ssf10na Жыл бұрын

Can you attach Child carrier

@forevercomputing 4 жыл бұрын

I didn't know you could replace crank arms individually. Mine came loose and rounded off the square taper. Didn't want to buy a new chain ring set.

@neadof4222 3 жыл бұрын

Can somebody tell me the max torque of the bolt from the star nut? Thanks

@nathaniellaugo1966 4 жыл бұрын

hi doddy, i just cleaned my bike today,then i decided to check my bolts, i have my shimano slx m675 ispec b shifter, it so happened that i stripped my bolt hole,and so the bolt doesn't hold on to my handle bars anymore. is it possible for it to be repaired?if it is, any tips in how? thanks doddy! #askgmbn

@Saif649-1 3 жыл бұрын

8:25 is them bolts are loose could it make the whole back end of the bike wobble

@killingtime11111116 Жыл бұрын

I can’t get the stem bolts off with an Allen key the assembler over tighten them idk what to do

@sebastianrex8856 6 жыл бұрын

Love the Channel ! Regards from Chile !

@gmbntech 6 жыл бұрын

Thanks Seba!

@connormitchell9220 6 жыл бұрын

I use a drill as it has the torque settings and it works fine, just go slow so you don’t strip bolts

@TechERni 6 жыл бұрын

#TOPMODS I have a great topmods entry for some Hardtail Love...... That sounded weird :D . My Specialized Pitch 650b, everything changed just the frame. Nice suttle Anodised Red features. Black, White and Red bike. Where I send the images?

@StefTechSurfer 2 жыл бұрын

My back wheel keeps touching the brake now. I think it moved but is stable.

@singletrackminded8079 4 жыл бұрын

NOTICE: Bar clamp Torque (5nm)is much lighter than steer/stem clamp.(way tighter👍)I learned this the hard way. Bars went left and the forks went right on a drop hazard into a creek.😂✌️

@prince92dadey 6 жыл бұрын

12:40 is that a 3rd hand, like the tool?

@Duraltia 6 жыл бұрын

Speaking of Torx bolts... Someone got a recommendation where to source MTB bike appropriate Torx bolts from? I imagine Torx bolts being a small step safer than HEX ones when it comes to casual theft of parts of my bike but somehow I just can't manage to find a shop that would sell like a large assortment of sizes, lengths and color ( black anodized or titanium preferred ) ones.

@_Steven_S 6 жыл бұрын

Durahl somewhere like accu.co.uk?

@martinalberter6369 2 жыл бұрын

Hi, are reversible ratchet torque wrenches capable of torqueing counterclockwise?

@yonglingng5640 Жыл бұрын

Most of them aren't, so you have to pay attention to the specs. Clockwise-only torque tools will have an arrow indicated on the tool itself that show its torquing direction.

@EllasPOSEiDON 6 жыл бұрын

You guys just forgetting one important thing. Torque force is changing by the length of the handle and also the length of the adapter as well. :) So keep in mind if you set up a torque power that will be a bit different from the real requirements.

@tmfrs2 6 жыл бұрын

12:35 HAND!

@j.forster9816 6 жыл бұрын

Who‘s Hand was it at 12:36 ?

@prgrier1 2 жыл бұрын

in lift lines, not super uncommon to see loose brake calipers, perhaps because of incorrect initial torque or lazy adjusts on the trial. Fun to inspect others bikes, of course.

@MaQuGo119 6 жыл бұрын

Close where I live a school opened for learning Biking mechancs its 50 hours and are charing 500 dollars, how good is the pricing?

@koko-lores 6 жыл бұрын

Depends, how good is the school?

@thebeast9869 4 жыл бұрын

Well when you can learn online for free and spend that money on tools and equipment seems stupid

@joseadamputu3558 13 күн бұрын

how to untighten and tighten bolt on alloy frame if i don't have torque wrench?

@gmbntech 13 күн бұрын

Standard Allen keys or Torx keys (depending on the bolt) will do it. But if you want to get them to the right tightness, it's worth investing in a torque wrench

@joseadamputu3558 13 күн бұрын

@@gmbntech thank you guys

@sickbassdrop 6 жыл бұрын

I remember it as, "pedals tighten as the wheels roll forward and loosen as the wheels roll backwards"

@koko-lores 6 жыл бұрын

I usually take a mental detour through precession forces and infer the correct way to tighten the pedals. Next, I get unsure because it sounds counter-intuitive, I remember the thing IS counter-intuitive for most people, wonder why I would still think it's wrong (given that I understood the mechanisms at some point in time) and have a look at a spare pair of pedals.

@nigellax454 4 жыл бұрын

Omg thank you!!$

@givreycham 3 жыл бұрын

@@koko-lores Right pedal right hand thread...Left pedal left hand thread !

@fastbicyclerider7300 6 жыл бұрын

And the spoke nipel

@callumcairns2377 6 жыл бұрын

I need wrench my hole bike is rounded off bolts an threaded screws mix n match on mine lol

@gmbntech 6 жыл бұрын

That sounds a bit sketchy Callum. Get it sorted as soon as you can!

@conman1395 6 жыл бұрын

How do you ensure that a torque wrench is calibrated?

@Ammi6543 6 жыл бұрын

One quick and dirty way to check if a torque wrench is in the correct ball park is to clamp the drive head (the part where the socket attaches to) in a vise or something similar and position the wrench so that the handle is parallel to the floor in the 3 or 9 o'clock position. Now we can use the formula: 'moment = force * distance'. By using a weight at the end of the handle we can test a certain moment on the torque wrench to test it's calibration. For our purposes: 'force = mass * 9.8' is a good enough approximation, so the force applied to our wrench by a 500g weight would be 4.9N. Let's say you have a 10kg weight you can attach onto the handle (preferably as near the end as possible), that would apply a force of 49N. Then measure the distance from the centre of the drive end to the point at which the weight is attached to the handle. For example this may be 0.1m (10cm). In this scenario the moment = Force * Distance = 49N * 0.1m = 4.9Nm. So if we set our torque wrench to 4.9 Nm (say 5.1Nm) it should not click. In reality your torque wrench does not typically need to be very accurate, and a deviation of 10% is more than acceptable for home use (for example 5Nm +/- 0.5Nm, or 2.4Nm +/- 0.24Nm).

@kubagajda7347 6 жыл бұрын

give that man a cookie!

@conman1395 6 жыл бұрын

Ammar Chaudhry I tutor physics at my college and didn't even think to do that. Outstanding

@willbennett7107 5 жыл бұрын

Fuck that I’ll just risk it

@Issara62 6 жыл бұрын

While its not directly on the bike, but might as well be when you're out, check your shoes cleat bolts. The slow realization when you know you're going to flop down next to your mates isn't a proud one.

@boomerangfreak 6 жыл бұрын

Check your wheels are tight? Well comes a bit too late for me watching this video. My front QR skewer came undone on the trails today.

@jayryan7473 2 жыл бұрын

Missed a lot of bolts LOL. This video doesn't seem like it's for mountain bikes, but more for non mountain bikes, because mountain bikes with full suspension have WAAY more bolts.

@Tom-fieldofskulls 6 жыл бұрын

Please do a vid on how to pump up yout tires.

@_Steven_S 6 жыл бұрын

tom scholfield hasn't MBR already done that video?

@sturedman6920 3 жыл бұрын

You want a reliable and good quality torque wrench get a snap-on or wera.

@justinholmes5614 6 жыл бұрын

Anyone rate the Icetoolz Ocarina torque wrench ?

@Montblanc1986 6 жыл бұрын

If it comes loose it wasn’t tight enough to begin with. A hose clamp on my car kept coming loose so I hit it with a power tool and it’s been solid for over a year knock on iPhone...

@koko-lores 6 жыл бұрын

After tight comes loose.

@markdandridge79 11 ай бұрын

No issues with assembly for me kzfaq.infoUgkxHL1v1R3NE5x4KiYfyt8dnQmyNYz7qi5L but I could see where some might benefit from using an experienced bike assembler/mechanic. I'm an older rider starting back after a 10 year break. This bike exceeds my capabilities and has been easy to get comfortable riding. I'm mostly on easy trails with almost no street riding and have not been disappointed with the performance of the bike. My fitness level is far below what I previously rode with and because of that the mileage is going on the bike slowly. While I'm losing weight slowly, the bike seems to tolerate my 220 pounds just fine. The bike has been used by several family members ranging from 5'5" - 5'9".

@tajprior4217 6 жыл бұрын

Using flats? 12:36 lol

@listofromantics 6 жыл бұрын

ALWAYS use a torque wrench, otherwise you risk voiding the warranty on your bike and parts due to negligence and poor maintenance (in addition to breaking your bike). NO SUCH THING AS "MUSCLE MEMORY" with gauging torque values. You spend thousands on a bike and accessories, so WHY wouldn't you spend a less than $100 for some good torque wrenches???

@rupedog 6 жыл бұрын

Doddy, what u doing clicking that torque wrench multi times dude, thats how u over torque! Should only turn a torque wrench smoothly and continuously until it clicks..Once! Not then 'bounce' the wrench as that usually tightens more...one click is enough. If u need to check a bolts torque, loosen it 1/4 to 1/2 a turn first...

@rupedog 6 жыл бұрын

Just saying cos viewers will copy that....great vid tho...

@williamkeys5701 6 жыл бұрын

I think he was doing it to demonstrate how the wrench indicates you have reached proper torque. But good call on one & done.

@bctrailbagger 3 жыл бұрын

Wish I would have seen this before effing up two carbon handlebars... ='(

@mentalmtb3104 6 жыл бұрын

Never stay use common sense unlike you and me it’s not that common anymore 😂

@wallyedmonds8199 4 жыл бұрын

16 mm too lol race face 🙄

@hill2666 6 жыл бұрын

Why you have a pizza cutter in the background ?

@benjik9294 6 жыл бұрын

last byte because it’s a park tool one and ther sponsored by park tool so they need every park tool tool

@jdub6797 6 жыл бұрын

Doddie, The only way to correctly tighten a bolt is using a torque wrench. There is nothing called muscle memory to tighten the hardware. This is something that frustrated me about the GMBN channel, showing fixes without using a torque wrench. The only time to not use a torque wrench youis on the trail repairs. Please promote the correct way to tighten bolts.

@b.s.adventures9421 6 жыл бұрын

J Dub you do get a feel after time.

@sickbassdrop 6 жыл бұрын

The tolerance of bike parts beyond pivot point with bushings or bearings are large and a range of torque (e.g., muscle memory, perceived torque, etc.) will work just fine.

@woduk 6 жыл бұрын

bryan rut exactly after amount of time you get a feel of how tight bolts should be, fitted some new pedals recently didn’t use a torque wrench just nipped up lightly and after two weeks of use not come loose yet. However I do use torque wrench on crank arm bolts