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Unanswered Questions

99 questions with no upvoted or accepted answers
6 votes
0 answers
109 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 ...
4 votes
0 answers
573 views

Mavic Cosmic SLS - carbon separation

Some aero’ wheels are an aluminium rim with a carbon fibre shroud. On a Mavic Cosmic SLS rear wheel, I’ve found that the carbon fibre shroud is separating from the aluminium rim. Just visible in the ...
3 votes
0 answers
67 views

Are there compatibility restrictions about remotes for dropper posts and suspension locks?

I consider adding an handle bar remote for a bike with a front-suspension fork. Given the bike has already a dropper post, I was thinking to add a dual "dropper/suspension" remote. I noticed ...
2 votes
0 answers
46 views

Why have my rim brakes started making a scraping noise?

I bought a bike about 7 months ago, and I've noticed over the last few weeks that it's started making an unpleasant scraping noise when I brake. Does anyone know what might be causing this and how to ...
2 votes
1 answer
74 views

Sram/Avid brake hose compatiblity

I have Sram Rival AXS which I want to transfer from one bike to another. Unfortunately the new bike is bigger (M -> XL) so new brake hose is required. SRAM recommends SRAM Brake Hose Kit - Double ...
2 votes
0 answers
94 views

Are wheels designed for a maximum disc/rotor size?

I'm looking at some new wheels which Shimano describe as "140 mm disc brake rotor compatible". Does this mean they can't handle larger 160mm rotors? If not, why would they make this point, ...
2 votes
0 answers
76 views

What factors contribute to tightly fitting tyre

I recently purchased a 2021 Giant Propel Advanced Pro 0 road bike and it came with Giant’s SLR1 hookless wheelset. I have been having a pretty tough time replacing the tube after I have received a ...
2 votes
0 answers
95 views

Cable housing end cap for BR-M375

I replaced the no name brake calipers on an entry-level ebike for Shimano BR-M375. The cable housing for the rear caliper was a bit too long, so I cut off a few centimeters. Then, I put a new 5 mm end ...
2 votes
1 answer
243 views

Upgrading Shimano Acera 8 speed Rear Derailleur to 8 speed Shimano XTR derailleur

Looking for some help here. I am upgrading Shimano Acera 8 speed rear derailleur to 8 speed Shimano XTR rear derailleur and it appears that because the old 8 speed XTR derailleur has a clip for the ...
2 votes
0 answers
66 views

I need help with a airless inner tube/tire issue

So I just bought a brand new Abound from Aventon. The city I live in is horrible and even with double thick tired, Tannus armor inserts, and puncture-resistant inner tubes I've had 3 flats in 3 months ...
2 votes
0 answers
76 views

Would anyone happen to know what model this HED wheel is?

I have come upon this HED rear disc wheel and want to do a quick cost evaluation, and identify the model year ideally. Any help would be appreciated!
2 votes
0 answers
284 views

after multiple brake bleed, lever's max stiffness is still close to bar

so after a few bleeds i've done on these Shimano saints, because of new levers replacement, i've found that the rear brake lever, although on max stiffness, goes way further to the bar then the other ...
2 votes
0 answers
118 views

Pirelli tires (mixing 700X23c and 70025c)

A bike shop (whom I trust) replaced my tires with new 700X25c Pirelli P Zero Zello 4S front and rear, the rear tire did not clear the fork/frame for some reason, they switched the rear 700X25c with ...
2 votes
0 answers
177 views

SRAM Hydraulic brake stuck (with a changed bite point) after landing/impact

I experienced a weird problem on my SRAM level t 2 piston brakes. I like hopping my bike around, e.g. bunny hopping onto curbs. Sometimes, if the impact is hard, the brake lever would have reduced ...
2 votes
0 answers
514 views

Cane Creek "universal" hoods and Shimano 600 (BL-6400) lever compatibility

Does anyone happen to know know if these Cane Creek "universal" hoods are compatible with these vintage Shimano 600 (BL-6400) levers? It's okay if they don't fit quite perfectly or if I have ...

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