Unanswered Questions

754 questions with no upvoted or accepted answers
10 votes
0 answers
587 views

What is the name for this front wheel steering type?

So far I've found two types of steering aside from the classic direct steering ( Handlebar->Stem->Fork->Wheel rotating in head tube bearings (headset)) that eliminate the head tube, used in a ...
9 votes
0 answers
188 views

Longitudinal play in the lower of the front suspension

I noticed recently some play in the lowers of the front suspension of my fun bike (NEX 25). The way to notice it was the following: locking the suspension blocking the front wheel with the brake ...
9 votes
1 answer
820 views

Shimano Dura-Ace R9120 lever leaking

My bike's Dura-Ace R9120 rear-brake/front derailleur shifter (left shifter in UK) leaks brake fluid when I pull hard on the lever. It leaks from this specific place: I understand this lever is ...
7 votes
1 answer
1k views

Alternative to 5-speed twist shifter for Shimano Nexus 5-speed IGH?

I'm going to buy a SG-C7000-5D / SG-C7050-5D and don't want to use the twist shifter. Unfortunately there aren't many 5-speed flat bar shifters around theses days. I've searched for alfine shifters, ...
6 votes
0 answers
46 views

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 ...
6 votes
0 answers
148 views

The bike derailer will automatically drop to the lowest gear in the rear whenever my cadence slows

I have a REI Coop CTY 2.2 bicycle. Whenever I am biking and my cadence slows down, the bicycle derailer automatically (I am not shifting) to the lowest gear on the rear derailer. Any suggestions on ...
6 votes
0 answers
205 views

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....
6 votes
0 answers
989 views

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. ...
5 votes
0 answers
36 views

Giant Crest fork NEGATIVE pressure

my child runs a Giant Crest 34 RCL, that is newish (couple months old,) and has been fine for the past few weeks that they have ridden. They run about 60PSI, and testing the rebound makes no ...
5 votes
0 answers
97 views

Tube terminology for tandems

The names of the tubes are well established for standard single-rider diamond frames, but seemingly less so for tandems. For tandems, there's a bit more variety in frame design, but the one I've just ...
5 votes
0 answers
312 views

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 ...
5 votes
0 answers
154 views

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 ...
5 votes
1 answer
356 views

Why does my crank go in reverse and my chain drop when I am not on the bike?

I have a problem of my chain dropping. What happens is when we stop and I unclip from the pedals, the crank rotates in reverse and the chain drops. I am in the large chain ring when this happens. ...
5 votes
0 answers
3k views

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 votes
0 answers
47 views

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 ...

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