Replacing an External Bearing Bottom Bracket

[4831555]

According to shimano for a 73mm shell you need one spacer at the chainring side and for the 68mm shell you need all the 3 spacers, 2 spacers at the chainring side and 1 one at the other side.For 83 mm you need again all the 3 spacers supplied, 2 at the chainring side and 1 at the other side. For shimano cranksets ! But i think this is a universall thing for the externals bearing BBs

[T33RO]

Very specific and simple I Like it!

[RidingTheDirt]

very helpful video. except i have an 83mm BB and not sure how many spacers to put in?

please help.

thanks.

[ONE10Sports]

You will need to check the instructions that came with your crank and BB. 83mm is not a "normal" size, therefore the crank shaft will be longer. check the instructions or the crank manufacturer's website. :)

[urasso]

thank you very much for the tutorial. this explains the spacers issue for me.

[Kat1Stel2]

By far -far the best of all the videos I've seen on this subject. The same for all your others one, keep them coming Please . Thanks and sorry for the several comment my mistake

[Kat1Stel2]

By far -far the best of all the videos I've seen on this subject. Thanks

[Kat1Stel2]

By far -far the best of all the videos I've seen on this subject. Thanks

[jamie191817]

Brilliant! Thanks so much for making this video.

[cyclefan1]

Top demonstration, I knew the basics, but was researching if the threads were regular or reverse.  This answered the question, with a very clear demonstration. Great tutorial, keep them comming... How about one for "replacing front forks". PS your 3 dislikes are from cycle repair shops!

[ONE10Sports]

@cyclefan1

thank you for your suggestion. we hope to do more videos soon. when we do, we'll try and do one on fork replacement. Thanks!

[Imadeyourun]

Very nice and well explained. I'm looking to change my barrings myself since I'm living in Saudi Arabia and there seems to no decent bike mechanics here, so this video was a big help in guiding me in the right direction. I'll be looking forward to future videos. :)

[hagenar]

Great video. Important to emphasize: 2:28. The spacer info is for "bottom brackets that fit both 68mm and 73mm shells."

On some bottom brackets meant for 68mm shells only, spacers may not be provided nor required. eg. A Shimano BB meant for a road 105 5700 double crankset needs no spacers. Read the instructions.

[TeacherPhilEnglish]

Best bike tutorial I've seen. thx

[cntryman1]

can you guys please watch this link for my 10 days old Trek 7200 and tell me if this is normal!!!!????? the agent told me its normal!!!!!.(search-trek 7200 problem)

[ONE10Sports]

@cntryman1

well he was somewhat right- it is normal, it's a "normal problem" anyways. the slack you see is a result of the bottom bracket cups not being tight enough. your bike has an internal bottom bracket. there are two cups that hold it in place. what you need to do is- disassemble the BB from the bike. thread in the drive side cup FULLY. (the dirve side cup is attatched to the BB) then thread in the non-drive side, and tighten FULLY. the slack should disappear. if not, write me again.

[ONE10Sports]

liam22brand ,

well, i'd have to know more abou the "click". typically, when a loud click is being heard, it's the pedals. usually you can feel a bad BB before you can hear it. a typical bad BB sound is a low grind on a hard downstroke. a higher-pitched click, especially when lightly pedaling, is usually the pedal bearing. but without seeingthe bike, no way for me to say for sure. You just have to take one pice off at a time until you find the noise. Good luck!

[MAYLO777]

how is it called the screw bellow the bottom bracket that unifies all the rear part???????????????? i need to know that with urgency

[ZappyLaser]

Easy to follow. Great help with spacer info.

[takwanira]

Thank you, very simple, clear and understandable instruction.

[Mrkaaaaaaaarl]

Thanks mate, that was great, clear and easy to understand :)

[ONE10Sports]

Yes, this is true for all bicycles, road and mountain. The drivetrain and all its components are always on the right side of the frame. and the non-drive side is always the left.

[MrHorsel]

Thank you for clarifying. Great video.

[MrHorsel]

I belive theres a mistake in the "standard spacer placement" explanation following the diagram. In the diagram clamp on with 73MM BB should have 1 DS spacer. Directly after it is said 73MM do not need any spacers, not mentioning clamp on or E-type.

[ONE10Sports]

MrHorsel,

Thanks for your comment!

The video breaks down how many spacers are needed into two parts- shell width, and derailleur type. I can see how the video might be confusing, but it was trying to seperate the two steps so it's easier to understand. Example: Step one- I have a 73MM shell, ok no spacers needed to make up the width difference. Step two- I have a clamp on derailleur, cool, need to add one spacer. make sense?

Thanks for pointing that out, I can see how it was worded funny.

[evanjt]

great video! thanks

[superhossenpheffer]

Fantastic video! BRAVO!!

[sklineline]

A++++++ Please do more videos like this!

[Partyrama]

This video is indeed the only one I've seen explaining all about shell width, chainline, spacers, etc ... Great vid, looking forward for more...

[Partyrama]

This video is indeed the only one I've seen explaining all about shell width, chainline, spacers, etc ... loooking forward for more vids.

[Andrius171991]

This video is far better than other bike part installation videos i've seen. Great work!