Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Rik on Thu 14/Dec/17 7:42am

Philthy wrote:Yeah those revolver freehubs were definitely a consumable item, luckily pretty cheap to replace


I don't think the Shimano ones are any better.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby ShoreBoy on Fri 29/Dec/17 8:42am

Bought my daughter a BYK E250 for Christmas, and the rear wheel is dragging. Not sure if it's bad rear bearings or the coaster brake rubbing.
LAst time I had a coaster brake on a bike, I was young enough to say "Dad it's broken, fix it" and that was that. Now I'm the dad and I have no idea how to adjust them.
Tips, tricks or advice are greatly appreciated!
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby slidecontrol on Fri 29/Dec/17 9:41am

Most likely bearings, many coaster brake hubs like a little bit of play in the cone adjustment.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Astoria Paranoia on Mon 8th Jan 6:13pm

I dun derped.
I bought a new freehub body for a Hope Pro II but accidentally ordered the Evo version.
Is it just a matter of changing the bearings and using the old spacers?
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby doogee on Wed 10th Jan 8:01pm

BB90 problem: so my Trek Madone (carbon frame) had a lot of vertical play in the bottom bracket, which is BB90. Took the crank off and both bearings just fell out, they are no longer press-fit! Apparently this problem is so common that you can get oversized 37.1mm bearings to fix it so I bought some. This fixed the drive side but the non-drive side is still loose, though less so - I would guess there is about another 0.1-0.2mm of slack. Is there anything else I can do, or is the frame toast? Is Loctite or epoxy an option? Unfortunately there's no warranty as I bought it secondhand. Thanks.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby pushbikerider on Wed 10th Jan 8:14pm

You can purchase bearing retainer compound from loc-tite and others that will probably do what you need
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Dougal on Wed 10th Jan 9:07pm

doogee wrote:BB90 problem: so my Trek Madone (carbon frame) had a lot of vertical play in the bottom bracket, which is BB90. Took the crank off and both bearings just fell out, they are no longer press-fit! Apparently this problem is so common that you can get oversized 37.1mm bearings to fix it so I bought some. This fixed the drive side but the non-drive side is still loose, though less so - I would guess there is about another 0.1-0.2mm of slack. Is there anything else I can do, or is the frame toast? Is Loctite or epoxy an option? Unfortunately there's no warranty as I bought it secondhand. Thanks.


2 pack epoxy. It'll fill the gap and stick it in well enough but can be tapped apart again later.

Loctite do a few products that seem suitable, but they're anaerobic cure which means if the fit is too loose it'll never harden. The epoxy is a guaranteed cure if done right.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby doogee on Thu 11th Jan 10:34am

Dougal wrote:
2 pack epoxy. It'll fill the gap and stick it in well enough but can be tapped apart again later.

Loctite do a few products that seem suitable, but they're anaerobic cure which means if the fit is too loose it'll never harden. The epoxy is a guaranteed cure if done right.


Thanks, I'll give it a go!
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Sims on Thu 1st Feb 10:52am

Is there a simple way to test if a Di2 derailleur is dead or not?

Setup is:
6770 shifters + FD + RD = works
6770 shifters + 6870 FD + 6970 RD = not work :(
Sims
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Dougal on Sat 3rd Feb 3:22pm

Who makes an ISCG-E-type derailleur mount?

I found this Blackspire one, but I don't need the lower roller: https://www.blackspire.com/product/e-type-stinger/
Dougal
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby shmoodiver on Mon 5th Feb 12:03pm

Hacksaw
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Dougal on Mon 5th Feb 12:20pm

shmoodiver wrote:Hacksaw


That's plan B.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby wachtourak on Tue 6th Feb 7:34am

Sims wrote:Is there a simple way to test if a Di2 derailleur is dead or not?

Setup is:
6770 shifters + FD + RD = works
6770 shifters + 6870 FD + 6970 RD = not work :(


Might need a firmware upgrade to work with the newer derailleurs?
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby BrokenKonaRider on Sun 25th Feb 8:16pm

Pro tip needed.

I've got a couple of too-long formula hoses. Are formula olives and barbs common enough, or can I use a shimano or SRAM version?

Google is not clear on this issue.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby BrokenKonaRider on Tue 27th Feb 9:08pm

Decided to dremel off the old olives, reuse the barbs with SRAM olives. So far so good
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