How To Remove And Replace A Threaded Bottom Bracket | BB Service | GMBN Tech Maintenance Skills
VloĆŸit
- Äas pĆidĂĄn 24. 07. 2024
- Is your BB worn out? Ever wondered how to fit a threaded bottom bracket to your mountain bike frame? In this video, Doddy shows you how to install a new bottom bracket into your bike and lets you know what tools you will need to perform this. đ§
Subscribe to GMBN Tech: gmbn.tech/subscribetogmbntech
Pick up official GMBN merch: đ gmbn.tech/Bl
Follow us on Instagram or Facebook! @gmbntech
Sign up to the GMBN newsletter: gmbn.eu/newsletter
How often do you replace your BB? Did you find these tips helpful?
Please submit your content to our uploader: upload.gmbn.com/tech we love to check out what you have been up to and may feature it on the show!
Watch more on GMBN Tech...
đč How to install a Press Fit BB - gmbn.tech/installPFBB
đč Watch our Maintenance Playlist - gmbn.tech/MaintenancePlaylist
đ” Music - licensed by Epidemic Sound
Ten Billion Years (Instrumental Version) - Torii Wolf
Gatekeeper (Instrumental Version) - Torii Wolf (1)
Bubble Bee - The Fly Guy Five
Dirty Boots - River Run Dry
#GMBNTech #GMBN #MountainBiking #MountainBike #MTB #BikeLife #Cycling #HowTo #Maintenance #BikeMaintenance
Brought to you by the Global Mountain Bike Network (GMBN), GMBN Tech delves deeper into the bikes, kit and technology that powers your rides!
Our mission is to help you discover, dial-in, and get the best from the latest cutting edge bikes and technology available.
If itâs off-road tech youâre after, look no further! The weekly GMBN Tech Show showcases the latest and biggest tech stories, with more besides.
Fancy some factory tours and first looks to keep you informed of how the latest tech has arrived, as well as what they do on the trail? Youâve got it. Want some in-depth maintenance videos give you the knowledge to set up, look after and upgrade what youâve got? Yep, weâve got them, too. Lots of âem. In fact, our presenting team consists of bike industry professionals with decades of experience of wrenching, writing, and working at the cutting edge of mountain biking so we can keep you informed, entertained and engaged with all the tech that drives mountain bikes forwards!
Thanks to our sponsors:
Canyon Bikes: gmbn.eu/Canyon
Nukeproof Bikes: gmbn.eu/nukeproof
Pole Bikes: gmbn.eu/PoleBicycles
Park Tool: gmbn.eu/ParkTool
POC helmets and eyewear: gmbn.eu/POCsports
crankbrothers pedals: gmbn.eu/crankbros
Shimano Footwear: gmbn.eu/ShimanoShoes
Dainese Protection: gmbn.eu/Dainese
Ergon: gmbn.eu/ergon
Vittoria Tires: gmbn.eu/Vittoria
FSA: gmbn.eu/fsa
e*thirteen: gmbn.eu/EThirteen
Topeak: gmbn.eu/topeak
Garmin: gmbn.eu/Garmin
Muc-Off: gmbn.eu/Muc-Off
crankbrothers seatposts: gmbn.eu/8b
Komoot: gmbn.eu/Komoot
Facebook - gmbn.tech/gmbntechfb
Instagram - gmbn.tech/gmbntechinsta
Twitter - gmbn.tech/gmbntechtwitter - Sport
How often do you replace your BB? Did you find these tips helpful?
Very helpful. I am about to do my first one on my commuter bike, headed to the shop to see if they can get my parts. I like working on my own bikes if possible because its fun.
Great video! Thanks for the helpful walkthrough.
Great video Doddy! picked up a couple hints. Thanks đ
Another awesome video from the Doddster, Thank you so much for all your hard work.
Thank you doddy, I learn from you a lot of important and helpful things.
Great video as usual
Thanks đ dodds my brother was curious đ€š about installing his bottom braket I shared this video to him an he successfully installed it thanks to your video keep it up đđ» Top tech videoâs from the boss
Another excellent "how-to" video, I especially appreciate your wise and experienced cautions.
You send this video to the day were Im replacing mine whit new bearings and crank
Imagine you put crank arms on there that are sized for a little kid đ
perfect timing for this tutorial, thank you! My threaded Shimano BB just started to creak last week and wanted to disassemble it anyways, was just googling how to do it yesterday :)
Good video, i like that your using a torque wrench. Ive only been recently been watching your videos, really been enjoying them. I really like when you talk about vintage stuff to, brings back memories!
Ha, was just about to look for a gmbn video about changing my Occam's bb
Since we recently had more CC stuff on GMBN (tech) you could make a co-op with GCN tech talking about what the roadies have adopted from MTBs and vice versa.
Let's do this boyz! ONLY THREADED BSA BB!!
Nice bike
Hi Doddy great show by the way! I have an orbea rallon M10 2018. Believe it or not I have gone through 10 DUB BBâs since having the bike from new.! they Dont last at all as I tide up in the peak district a lot sand/dirt and as you the no the weather can be horrendous. Just wondering if Hope BBâs or Chris King are better? Perhaps a silly question but need to ask as Im replacing them all the time. I get alot of play after a month too.
Cheers Jon
#askGMBNtech
Heeey Doddy... Deciding to buy my first full sus bike but with idea to upgrade later... which could be your pick for good basis...
P.S. So glad that found this channel... helps to grow in biking thing đâ
Iâve found on deore and slx cranks, that once you have removed preload cap and undone pinch bolts, there is a safety tab you need to flick up before you should remove the crank
i also noticed doddy didnt undo this while taking the cranks off. Makes it much easier because that tab actually puts a pin in a hole in the spindle locking it on.
Do you guys know which Park Tool socket to use for the Bb52? I canât find on their website
Also, if I wanted to upgrade to an MT800, is that a different socket?
@@Jacob99174 I have the bbt9. This I could use to remove the deore bottom bracket. The mt800 is smaller but comes with a piece of plastic which you insert into the tool to remove the bottom bracket. Iâm not a fan as itâs hard to insert the plastic into the tool and then a very tight fit on the bottom bracket. I would look for better tool
@@jameslewis7479 any difference between 800 and 52? Or just stick with 52?
Besides color
@@Jacob99174 the mt800 is xt series of component so is better, for the extra few quid worth an upgrade
First threaded BB I ever put in I tried putting it in backwards. Luckily I stopped before I got it too stuck for a bike mechanic to get out. That was in 1994 or so.
Ihad to Replace the Bottom Braket yesterday. I need to Cut the Frame in to get it out =P
And the i place it in the new Frame =)
And that's why you always put grease there! Lately I was forced to remove old threaded square BB - after soaking it with WD40 it finely gives up.
How do you know when to replace a bottom bracket to things just get loose or is there like a mileage standard you should be looking at?
Is it just me that saw the old spacer installed on the drive side but that the new spacer was installed on the non drive side? Can you clarify?
I have just done this literally yesterday I didn't have a clue how then when I saw this pop up I was like oh really
At 13:28 you mentioned that you have the plastic spacer on the non-drive-side cup.. isn't the spacer supposed to be on the drive-side if you're using one?
Changing a BB for the first time and need a little advice/have stupid question:
Bike is a 2018 Whyte 905 WITH SRAM GXP BB as standard.
I've just ordered a Wheels MFG BB as a replacement, but it's arrived with a million spacers and some wavy washers (which weren't on the original BB.)
My first thoughts were to install the new BB without Spacers, as the old BB didn't have any fitted BUT the actual cups of the new BB (the external part, not including the threaded section) are thinner than the original BB, so maybe I need spacers to maintain the proper Chainline? Or do I just throw it a the bike and be done with it? đ€đđ€ŠđŒââïž
Apologies for stupid questions, first time I've done this.
Cheers.
Steve
Question #1. Where to buy them? Most are out of the stock everywhere...
#askGMBNtech I have one bike with XTR BB and one bike with XT BB. Both come with a plastic ring adapter to make them fit the standard tool but none of these adapters fit the standard blue Park Tool cup (only by a smidge). Why is that?
With these BBs if you do not use loads of grease when you get to the threadlock you can easily crossthread it. The other option is to screw in and back out to remove the excess thread lock or clean it off entirely and apply some fresh stuff that's easier to screw in.
The threadlock they use also serves to keep water out of the threads and the internals of the bottom bracket
I Have a Vitus nucleus vrs hardtail I have done over 1400 miles on it . The Cranks Where Creeking Badly . ( was Embarrassing ) I have bought new Crankset as shown in the video and still here Creeks from it . Any Ideas what's wrong with it.
6.13
Turns a clutch off to on?
looks like obea is the new sponsor
đđ
FYI don't buy aluminium BBT socket, they strip easily, just found out the hard way. Go with iron or steel type.
Take photos with your phone off process of work carried out good service record when selling .
Face brake mounts
PLEASE DO THE SAME WITH AN OLD TYPE BB PLEASEEE!!!!!
If you have square taper cranks you replace the bb with a cartridge bearing and it just screws in
6:35 Preload tool has a crack in it lol
Using an automotive air wrench gun will get a seized BB unstuck. Start on low setting & be careful of course! This is where the socket BB tools really can shine. Much easier than busting your knuckles trying to hold the regular ratchet wrenches to the cup properly.
So they both undo winding to the front of the bike?
Correct
#askGMBNTech Hi Doddy. What if I allready striped BB threads, any solytion?
You'll need to get your threads re-tapped.
New bike.
The grease used is assembly grease correct and not precision bearing grease? sorry for the noob question... :p
Hey! Normal bike assembly grease is just fine! đ
@@gmbntech Thank u very much :)
SRAM DUB vs Shimano?
Anyone know a good alternative to a sm-bb52 ?
Iâm wondering the same. Looks like he went from bb52 to a MT800?
Just be careful, I think they used different sockets due to size
@6:11 Shimano clutch off or on?
Off, just to slacken the chain in order to remove
Is orbea a channel sponsor
I think you should of mentioned that you were using 2 different sized bottom brackets with 2 different sized bottom bracket tools.
You should never double click a torque wrench. Every time it clicks it tightens the fastener a little more.
A plastic tire lever will remove that little crank cap just fine if you dont want to spend the extra money on that little tool. Just use it like a big flat head screw drover
Where Locktite was applied, do not add grease.
Why now?! I had changed my BB a week ago))))
Little tech question for doddy!
Iâve got a sram gxp 83mm English threaded bottom bracket which are currently pretty unavailable in the uk at a affordable price.
The skinnier 70-60 (ish) width model is still readily available though.
my question is is whatâs the difference? The bb comes in 3 parts with each cup and then a plastic spacer tube in the middle. Could I buy the skinnier bb and swap out the plastic spacer to achieve the 83mm from the 60-70 version?
Cheers for anyone that can Help, louie
Sorry - this isnât answering your question! but where are you finding 73mm GXP bb in the uk - i need to replace mine and canât find one anywhere !
Yep, you could do that. The bearing cups on their own are the same whatever size width you buy and so you could throw away the new skinnier tubes and replace with your existing 83mm centre tubes.
Imagine your buddy asks you to do some work on his bike and you cross thread everything in on purpose đ youâd be paying for that huh my boss
You cut the chain a little too big on purpose, size the high and low screws a little too tight on both ends and give just a little bit too much cable tension on the shifter paddle adjuster lol
Coat the chain in a heavy grease and say yeah thatâs just lube itâs ready to go man đđ then strip all the hex fittings with an Allen key thatâs a size too small. Throw in the wrong oil in the brake lines and pump a few small air bubbles in there with a syringe
2 days too late :D
2 weeks too late
Are they sponsored by Orbea now? Just noticed them riding
Yep. Doddy mentioned it in the previuos episode.
Mmm
I hate the Park Tool Preload Tool, clearly has a design flaw, one side has a hook (use for pulling up the plastic clip) but when you unscrew the preload nut if youâre not careful the hook on the tool can put a deep scrape in the crank arm (fortunately mine had sticker protection). The hook needed to be machined on the back side of the tool!
I would be interested if anyone else has this tool and experienced similar problem?
GMBN should move to biodegradable chemical where possible and do a video on the available alternatives.
look at the dropper post flex when he tries to loosen the non drive side.. hahahahahahahaha only an idiot would mount the stand on the dropper post shaft
Wait, there's sane cyclists? Where they at tho?