Unanswered Questions

10
votes
0answers
1k views

Name that frame! (Likely Japanese, likely made in 1986, with known serial number, likely a Bianchi)

(This post was substanically edited/updated on 5/8/14.) I have a bike frame of unknown lineage. What is known: The serial number under the bottom bracket is IS513786. This fits with the serial ...
8
votes
1answer
184 views

How to remove dried vulcaniser from cotton clothes?

Months ago I changed a tyre on my utility bicycle in street clothes. An unfortunate set of vulcanising stains are now on street clothes I'd like to wear more often. How do I remove dried vulcaniser ...
5
votes
1answer
317 views

How bad is this fire damaged alloy frame?

I got this Shimano Ultra groupset bike for free, all I need now for it is shifters as the carbon and rubber melted in them and the original seat. But now I am wondering if I can get away with it, I ...
5
votes
0answers
486 views

Trading out folding bike seat post

I currently have an older Dahon Mariner with a Telescope seat post. The third wheel that functions as the "third leg" (when the bike is folded) has broken off. To compensate, could I switch out the ...
4
votes
0answers
95 views

Fixing hydraulic disk brakes, what to check first?

I have a 10-year old bike, fitted with hydraulic disk brakes. The bike has been actively used for around 4 years only though. Recently, my brake levers started to have more and more "play" before the ...
4
votes
0answers
132 views

Why would anyone use DOT fluid and vacuum-based brakes?

Mineral oil is much less toxic than DOT, does not absorb water, has higher boiling point. Bleeding Shimano brakes is almost as easy as unscrewing the caliper bolt and pouring oil into the lever ...
4
votes
0answers
138 views

Usage experience with anti-theft GPS trackers

Does anybody have any actual experience with anti-theft GPS trackers like BikeSpy? Their website looks terribly unprofessional and there are only very few testimonies online, but the idea is ...
4
votes
3answers
182 views

Slipping when pedalling

I have a repair question. I am experiencing some slipping when I pedal, once-per rotation, however, it is not the normal chain/gear skipping that I have read about most of the time. The bike is an old ...
3
votes
0answers
132 views

Strange logo on the frame

just bought bike, but it seems like the frame is not bianchi, all marks and texts are stickers. also, there is few logos in this frame. does anyone know which frame is this? thanks!
3
votes
1answer
67 views

Just found a vintage Sears & Roebuck 'Ted Williams' Free Spirit 3 wheeler. Can I modernize it?

It's been in my girlfriends back yard for years and I'm under the impression that it's a pretty uncommon bike because I can't find any information on it. Her stepfather spray painted a camo pattern on ...
3
votes
0answers
64 views

Trek 1.1 Derailleur Hanger

I've got a 2011 Trek 1.1, and my derailleur hanger broke in a crash a few weeks ago. I've tried both a number 5 and number 6 hanger, which are what WheelsMFG has listed, but neither seem to fit. There ...
3
votes
0answers
97 views

Do Miche bottom brackets require a special tool, or is this one damaged?

I just bought a Miche Primato bottom bracket and tried installing it using Park's BBT-5 (the same tool I used to remove the previous bottom bracket, also Miche, but from 2008). The BBT-5 fit into the ...
3
votes
0answers
171 views

What to do when there's no more adjustment room on disk brakes

I just built up a new frame and discovered that due to slightly different geometry the rear disc callipers can't be adjusted so that they don't rub. Basically I've got them all the way over to one ...
3
votes
0answers
312 views

Pressure gauge on my pump stuck at one value, what is wrong?

I have a Specialized Switch Hitter I have used for several years on both Presta and Schrader valves. Recently, my wife tried to inflate her tubes (Schrader valve) and could not get the pump to ...
3
votes
0answers
240 views

Disc brake pad and rotor compatibility

The SM-RT53 rotor should be used together with resin pads. If it is used with metal pads, the pads will wear out very rapidly. from Shimano BR M-416 disc brake manual Which rotors work well ...

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