Worth Upgrading to Hollowtech II?

Рет қаралды 52,506

3 жыл бұрын

To replace the bottom bracket of the Trek 930 from square taper to Hollowtech II, you'll also need a set of crank arms with axle. The installation is very straight forward if you get the right bottom bracket for the bike and crankset.
Let’s start by removing the old crankset and bottom bracket
Which one is more durable? Is lighter the better?
Old square taper bottom bracket: 382g
Old Truativ Firex crank arms: 524g
Total: 906g
New Race Face X-Type Team XC bottom bracket: 98g
New Race Face Ride crank arms: 643g
Total: 741g
Which brings a weight reduction of 164g (22% lighter) for this upgrade.
The bottom bracket comes with 3 spacers and each spacer measures 2.5mm. It fits both 68mm and 73mm bottom bracket shells with the right amount of spacers inserted. Most road and hybrid bikes are 68mm and most mountain bikes are 73mm.
To install on a 68mm shell, you’ll need to install 3 spacers. For 73mm shell, you’ll only need to install 1 spacer.
If you are not installing a chain guide or mounted derailleur, install only one 2.5mm spacer.
The spinning is smoother and has less resistance with the new Hollowtech II bottom bracket.
Check out my other video for the installation on Trek 720 Multitrack's 68mm shell:
Replacing Square Taper Bottom Bracket To Hollowtech II
• Replacing Square Taper...
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#trek930 #raceface #hollowtech
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Пікірлер: 82

@InCountry6970 2 жыл бұрын

Drop the unnecessary and overly loud music.

@Shawn-wm5zl 2 жыл бұрын

Good video but should likely be called how to change not "is it worth it"

@lunam7249 Жыл бұрын

were old school and correct

@juketreks2192 2 жыл бұрын

Great video, with lots of details for disassembly and installation. Thanks for sharing.

@MrZulkifliz 3 жыл бұрын

I'm sure you had a lot of wonderful memories with this bike.. ❤️

@rollinrat4850 3 жыл бұрын

For the money these BBs are a great value. I had inexpensive Shimano BBs last 10 years offroad. For some reason, at my shop we hardly ever replace Shimano BBs. They just sit on the shelf and gather dust. We sell mostly the other brands! After every wet and muddy ride, remove the seatpost and turn your bike upside down. Leave it like that for an hour. Don't let water sit in the BB shell.

@ianmangham4570 Жыл бұрын

Shimano square taper are BEST ,stronger and smoother than external bearing 💯

@MrJx4000 Жыл бұрын

@@ianmangham4570, don't the Shim. sq. taper BBs also resist dust and dirt accumulation?

@ianmangham4570 Жыл бұрын

@@MrJx4000 They are sealed, they only brought these outside bearings out to make 💸 🤑 💲 💵 💰

@MrJx4000 Жыл бұрын

@@ianmangham4570, yeah but doesn't stuff get inside the BB frame cylinder, etc?

@ianmangham4570 Жыл бұрын

@@MrJx4000 No

@rodcosta2345 2 жыл бұрын

Great videos man!!

@sikadcommuter6702 3 жыл бұрын

Nice vid. Thanks for sharing.

@nutty3507 3 жыл бұрын

awesome video. keep it up!

@DanyoSports 3 жыл бұрын

Thanks🙂

@tingbiz 11 ай бұрын

Your title says Hollowtech II, but the crankset you used was a GXP which is 24/22mm, that is meant for SRAM dub BB. Other than that, the process is pretty good, and relaxing to watch. Good instruction on how to replace/upgrade to a English BB.

@daily_dose_of_nothingness 2 жыл бұрын

I m using it for a year already with MT210 Alivio

@donMocceci Жыл бұрын

I still believe in good square taper Shimano BB UN55, the undisputed King of Old School!

@IronHorsey3 Жыл бұрын

Putting a new Shimano BB-UN55 right now into my Trek 5200 road bike. Looking forward to it!

@wildbikerbill6530 10 ай бұрын

I thought it was out of production. Is that not true?

@daniellarson3068 7 ай бұрын

@@wildbikerbill6530 Yes - But they sell others that will fit.

@DJbernardo1320 2 жыл бұрын

hi , how do we know how many washers to put on the left and right side?

@shampoodaitv7222 Жыл бұрын

Hi, is it ok not to install the plastic sleeve in the center of a hollowtech BB? It is getting in the way of my dropper post internal cable so I am thinking not to install it. Thanks in advance.

@LibertyZone777 Ай бұрын

Nice video, what drivetrain you have installed?

@jericho9128 3 жыл бұрын

Nice vid

@n.y.npache2646 5 ай бұрын

i m changing my square bb to a hollowtech because the chain is rubbing against my derailleur when i press hard on the pedals (3 plates crankset), something is twisting, i presume it is about the crankset and the bb ... so i hope to gain some rigidity .. but as you don't have any front derailleur , not sure you really feel a difference (?)

@MrKockabilly 8 ай бұрын

Decent installation details. But you did not answer the question, is it worth it?

@delubzgamer4550 2 жыл бұрын

i changed mine to hollowtech 2 and it seems like a downgrade because pedaling now is stiffer/harder. my bike bb shell is 73mm so i put only one spacer on the driveside everything was also well lube torque according to manufacturers guide deore fc m5100 set, chain is kmc 11s

@KarlosEPM 2 жыл бұрын

I understand what you say. I replaced a Shimano sealed BB (UN-55) with a newer one (UN-300). Both are square taper but the new one doesn't spin freely like the old one did. The thing is the older style have cup and cope bearings whereas the newer ones (inboard UN-300 and outboard Hollowtech-II) have sealed cartridge bearings which aren't as smooth as the cup and cone. However, Hollowtech bearings will allow for much less flexing of the spindle since they sit right next to the crank. Stiffer = more efficient power transfer. I do prefer the buttery smooth spin of the cup and cone so I ride the older style BB on my commuter. Flex = springy comfort (but also some chain rub when standing). Lastly, I will always choose cup and cone bearings for wheel axles over sealed cartridge. The cup and cone system can withstand axial forces, not just radial ones.

@reytampubolon6390 2 жыл бұрын

did u overtighten the cap nut on the non-drive side?

@rbat5555 2 жыл бұрын

I've got an old italian MTB with a 70mm ITA bottom bracket shell. I know there are 70mm Hollowtech BBs. My question is: would a single chainring crankset spindle even fit? Thanks!

@DanyoSports 2 жыл бұрын

Yes, as long as you put in the right bottom bracket.

@andrenikolai1061 2 жыл бұрын

If not using a Chain guide or FD for a 68mm bb shell, should I only put 1 bb spacer on the right and 2 on the left instead?

@DanyoSports 2 жыл бұрын

That’s correct, 1 spacer on the non-drive side and 2 spacers on the drive side.

@andrenikolai1061 2 жыл бұрын

@@DanyoSports I really appreciate this! Been searching for so long 🤣

@Enigmaafk 3 жыл бұрын

On a 68mm shell you said 3 spacer needed. How much spacer goes on the drive side and how much goes on non drive side. And how do you know what’s side need spacer .

@DanyoSports 2 жыл бұрын

If your bottom bracket shell is 68mm, you need to put 2 spacers on the drive side and 1 spacer on the non drive side. The only exception is if you are putting in a mounted chain guide or derailleur, then you would only need to put 1 spacer on the drive side.

@Enigmaafk 2 жыл бұрын

@@DanyoSports thank you very much .

@larrycalimlim568 Жыл бұрын

Saan ka nkabili ng truvativ

@yousignify 3 жыл бұрын

keep sharing good quality videos! just tone down the music volume a bit

@user-hu1ft9eg8e 2 жыл бұрын

A beautiful, good and detailed video but you did not answer the important question, is it really worth making the upgrade or is it just another trend?

@DanyoSports 2 жыл бұрын

Yes, it’s worth it.

@Not_Sure_ 2 жыл бұрын

@Dal J it's a cheap way to drop weight from the bike.

@christophhaug 2 жыл бұрын

@@DanyoSports And why?

@IronHorsey3 Жыл бұрын

For that bike with its old school pedals on that steel frame, it can be as more serviceable. For others, like road bike enthusiasts the answer is more likely no.

@charliedevine6869 3 жыл бұрын

You did not face the BB shell. Those lumps of paint will mess up the bearing evenness. You will have spin and bearing life problems.

@DanyoSports 3 жыл бұрын

Thanks for the advice.

@MrJx4000 Жыл бұрын

@@DanyoSports, refer to the Great Hambini to see how it's done ;-)

@clintonwilliams5571 3 жыл бұрын

Did you use a spacer on the non drive side?

@DanyoSports 3 жыл бұрын

No, you only need it if the bottom bracket shell is 68mm.

@timtaylor9590 3 жыл бұрын

interesting the axel is connected to the non drive side arm instead of the ds crank arm

@bnick25352535 3 жыл бұрын

Nice video,did you have issues with chainline at all.

@DanyoSports 3 жыл бұрын

Thanks, no, everything works perfertly.

@bnick25352535 3 жыл бұрын

@@DanyoSports Nice wanna do a 1x10 on my 135 rear frame Cannondale 29r mtb bike.Knowing the chainline will be off by easy 5mm still iffy about doing the purchase.

@DanyoSports 3 жыл бұрын

Ok, make sure you put the right amount of spacers on the bottom bracket.

@rangersmith4652 Жыл бұрын

The going-in premise of this video and many similar ones is that changing out an angular contact (aka cup and cone) bearing system for a radial contact (commonly called "sealed") bearing system is an upgrade. I disagree on that point. The radial bearing / hollow spindle system is most likely lighter, as is the case here, and supposedly stiffer, but stiffness is difficult to quantify in any meaningful way for a BB application. So saving a couple hundred grams is all you get; it is not "better" in any other way. Plus, it will require a constant diet of new bearings over its life. Give me an old-fashioned cup and cone square taper BB system every time. Regular adjustment and a clean out and grease replacement every 2000 miles or so makes a cup and cone system last almost indefinitely.

@lunam7249 Жыл бұрын

all vintage bike last forever!! i have a bunch..same as the birthday ..40 years later

@daniellarson3068 7 ай бұрын

I've seen several of these videos changing out the bottom bracket and wondered what the basis for doing this task was. I replaced my cup and cone with a cartridge type and expect to get many more years of service on my 1991 steel bike. It seems like a lot of the "new" bicycle stuff isn't always an improvement. I guess manufacturers made the change due to bikes being carbon fiber frames.

@rangersmith4652 7 ай бұрын

@@daniellarson3068 Yes, so they needed to employ press-fit bearings. But they don't get the tolerances right for press fit, and lots of problems ensue. So now many are returning to threaded shells. Go figure.

@daniellarson3068 7 ай бұрын

@@rangersmith4652 Thanks - I guess this is another reason to hang on to my 1991 steel bike a few years longer.

@DJbernardo1320 Жыл бұрын

So Isit? Worth? 😅

@danieldecastro4033 2 жыл бұрын

Brand headset and size ?

@DanyoSports 2 жыл бұрын

The size of the headset is 1 1/8” and it’s the original Aheadset that comes with the bike.

@dimassyfa0077 2 жыл бұрын

Size crank spindle

@DanyoSports 2 жыл бұрын

The spindle size is 137.

@fredmad4988 2 жыл бұрын

How much lighter your bike weighs after this change?

@radiocontrolled9181 Жыл бұрын

906g less 741g = 165g

@MrJx4000 Жыл бұрын

@@radiocontrolled9181, That much???

@radiocontrolled9181 Жыл бұрын

@@MrJx4000 Yep, definitely a game changer 😂

@MrJx4000 Жыл бұрын

@@radiocontrolled9181, okay, thanks for that. I'm gonna rip out my perfectly good working UN-55 and discard my cranks and spend a couple of hundred bucks tomorrow ;-)

@radiocontrolled9181 Жыл бұрын

@@MrJx4000 LOOLL You're welcome mate. You won't regret it. I did it and I'm soooooo much faster now with 165g lighter the bike just goes and goes especially uphill it's a breeze! It's money well spent Good luck ✌️👍