Unanswered Questions
794 questions with no upvoted or accepted answers
6
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0
answers
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What is forward drag on a coaster brake
I have a single-gear coaster brake bicycle that needed fixing. I would have to pedal real hard to get it to go and backpedal a block in advance for bike to stop. Very spongy brakes. Well I took brake ...
- 14.1k
6
votes
0
answers
683
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Shimano road bike lever leaking mineral oil
I have a leak in my Shimano DA 9170 (right) shifter. When I do a bleed, everything seems to work for a ride or two and then I start to lose braking power and the underside of the brake hood is wet ...
CommunityBot
- 1
6
votes
0
answers
240
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Swain Power-HR relation
I am trying to understand how to use Swain HR to Power equation in my case. Here is a calculator where one can vary the inputs and see the various outputs based based on the equation: http://www....
- 337
6
votes
0
answers
1k
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Help identifying MTB frame
Apologies making ANOTHER one of these threads...Anyhows:
Bought a bike third hand, frame has been stripped and painted. Trying to find make & model so I can get some offset bushings for the shock. ...
CommunityBot
- 1
5
votes
0
answers
510
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No LED on Junction Box on 2018 di2 8050 - But fully functioning
My 2018 di2 8050 is fully functioning as it should. Battery all good holding charge and i can charge battery ok using SM-BCR2.
Just no lights on junction box when i hold any gear change lever for 5 ...
CommunityBot
- 1
5
votes
0
answers
223
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Can't find derailleur hanger for an old Nakamura
I tried local parts shops and tried the internet and still can't find the right hanger, And I no longer have the old broken one.
I can't even find the bike on the internet, The only photo I found was ...
- 51
5
votes
0
answers
132
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keep going off-axis on big jumps i don't know how to stop it?
I've been riding for about 5-6 years, and can speed through tech, can do hips, speed-jumps 5-8 meters... but every time theres a jump with a steep lip, or involves me going quite high, i keep coming ...
- 325
5
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answers
3k
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SRAM XD cassette will not fit on the splines of an XDR driver
I have an 11 speed 10-42 XD cassette that I am trying to fit on an XDR driver (this one - https://www.alltricks.com/F-41493-pieces-roues/P-676097-fulcrum_body_sram_xdr). No matter how I turn the ...
4
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answers
123
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4
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0
answers
56
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What is the best way to estimate rider power in a BLDC-based smart trainer using a VESC controller?
I am developing a DIY smart bike trainer using a BLDC motor as an electronically controlled load. The motor is connected to the bicycle rear wheel through a friction drive, and braking torque is ...
- 41
4
votes
0
answers
81
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Looking for folding bike stem without rise angle
I want to shorten reach on a folding bike and I'm looking for a folding, telescopic stem. Usually those stems have 8-12 degree rise angle on them but I'm looking for the one that is completely ...
- 41
4
votes
0
answers
89
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Shimano Di2 shifter problem - Shifter Battery Discharging Abnormally Quickly
My problem is that the RH shifter stops working, I check the shifter batteries by depressing both levers and it showing red or nothing. However, when I check the batteries with a battery tester, they ...
- 6,970
4
votes
0
answers
170
views
what connector does my battery have
I have 2 ebike batteries that I would like to reuse. They both have this 6pin connector that I cannot find the type of. Can anyone help me out?
- 149
4
votes
0
answers
147
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Shutter Precision PD-8 dynamo hub cogging after removing wheel for cleaning
I removed my dynamo wheel to remove and clean my rotor and brake pads. I forgot to unplug the wiring from the connector before removing the wheel from the fork, but I didn't even realize that until I ...
- 41
4
votes
0
answers
2k
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Sram AXS derailleur does not shift
Have you encountered a problem where a rear AXS derailleur stops shifting? Any suggestions?
I bought a mint 2023 GX AXS derailleur on Marketplace, it worked for the first short test ride on a road but ...
- 141