6
votes
0answers
134 views

Is changing wheel necessary if freewheel hub with a different speed then previous is attached?

Approx. 3 weeks ago I have found an abandoned frame (including steering wheel, fork, brakes, pedals and shifting gears attached to it). I decided to use it to build a new bicycle since only recently I'...
5
votes
0answers
56 views

Stripped thread on steerer. Who is at fault - me or LBS?

Background I ride a Peugeot PKN10 (1980 or 1979 I'm unsure of the exact date). Three months ago I had a cracked chainstay replaced at my LBS. This required removal of the original fork and headset ...
5
votes
0answers
164 views

Accurately replicating the resistance felt whilst riding via a resistance fan diy turbo trainer

If I were to build my own Lemond Revolution style turbo trainer (link below) could I use the air speed in meters/second^2 the rider is moving into as a good indicator of what type and size of fan to ...
4
votes
0answers
55 views

Cylinder volume of hydraulic brakes and levers

I've been asking around for a while now but even workshop pros couldn't answer this (by citing exact figures): How big are the brake cylinders of disk and rim brakes in terms of volume and surface ...
4
votes
0answers
496 views

Change the angle of the arc of downtube / stem shifter lever to make it an alternative thumb shifter?

I want to mount the following SunRace clamp-on shifter set horizontally as a "thumb" shifter on a straight MTB handlebar (22.2mm). I will remove the left lever and only use the right with the clamp. ...
3
votes
0answers
41 views

Replace Regina valve with Presta

I have recently bought an Italian bike that uses Regina valves and I need to replace one of the inner tubes. Since I don't live in Italy and can't find that kind of valve anywhere, I thought of using ...
3
votes
0answers
57 views

Odd screw on brake disk

Worked on my first disk brake bike yesterday. It was a full-suspension BSO with cable disk brakes. The rear wheel had two broken spokes, and they where threaded such that I could not replace the ...
3
votes
0answers
51 views

Uncut steerer tubes too short for 21" Frames

I am restoring two old bikes a 1996 Trek 8000 and 2000 Fuji Aloha. Both are 21" frames. The problem I am having is getting forks that do not cost $1000 and have steerer tubes with sufficient lengths. ...
3
votes
0answers
53 views

Internal cable routing blocked on '80s steel frame. What are my options?

I have a new-to-me ~80's steel frame with a rear derailleur cable that is routed through the chainstay. There's a blockage close to the BB end, and I'm wondering what my options are? My assumption is ...
3
votes
0answers
46 views

Alfine 8 gear crunch

Occasionally under load when taking off on the flat, I would get a crunch, then it runs smoothly. After reading the other post I had tightened the wheel nuts but this has not fixed the issue. I have ...
3
votes
0answers
85 views

Clear coat on top of old paint in order to preserve it/frame?

Using nail polish to touch-up scratched/rusted frames is more or less well-known (cf. Girls Biking to Work), but recently a hobbyist restorer of old bikes told me that you can "just apply clear coat ...
3
votes
0answers
100 views

Shimano STePS Di2 Shifting with Alfine 11 - will it be ever automatic?

The Shimano STePS with Di2 and Alfine 8 received a firmware update this year, which enabled automatic shifting (it was not automatic before). Does anybody know if Alfine 11 models will receive any ...
3
votes
0answers
88 views

what causes a sidewall puncture on a tubeless tyre?

I have a puncture, on the side of my tyre. The tyre was inflated to about 120 psi, and in any case I thought tubeless tyres were immune to snake bites. What's likely to be the problem?
3
votes
0answers
20 views

Tool for Cannonade Carbon Si Crankset

Used a 3/8" hex key to remove the crank but the outer bolt needs to be tightened separately. Perhaps it's possible to tighten it with the crank off or do I need a special pin type tool. Its a ~2008 ...
3
votes
0answers
225 views

Ritchey carbon MTB fork dropout wear

I was inspecting my carbon fork dropouts and I noticed the deformation of the edge on the outer side of the right dropout that makes me unhappy. I don't know what is the reason of this issue. Here are ...
3
votes
0answers
122 views

takhion-esque track frame identification!

I thinking on buying this very lightweight track frame that is very similar in looks to those beautiful takhion pursuit frames from the urss 80's. I was told that brazilian cycling federation bought ...
3
votes
0answers
53 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....
3
votes
0answers
176 views

Specialized Brain problem

I have been searching for a while regarding a problem with my Specialized Brain. Here is the story.. I bought a 2008 Specialized Stumpjumper Expert 2nd hand and immediately noticed air in the shock. ...
2
votes
0answers
13 views

When replacing Avid BB7 pads they now need a “love tap” to install properly

This is an answer to a question which has not yet been posed on StackExchange: Bicycles. But, it is a question I have asked myself several dozen times over the last few months: How do you get new BB7 ...
2
votes
0answers
33 views

Is it safe to use aluminium seatpost adapter (27.2mm to 31.6mm) for a carbon frame?

I have Cane Creek Thudbuster Seastpost (aluminium) 27.2mm x 400mm which i want to use for a bike with a carbon frame (31.6mm seat-tube). I'm thinking about getting a seatpost adapter/shim from 27.2mm ...
2
votes
0answers
78 views

What kind of frame and brakes are these?

I just bought a bike and I can't figure out what kind of frame and brakes it has. I found that the derailleurs were made by DNB Japan somewhere around 1960 and that the handlebar is french (Guidonn ...
2
votes
0answers
82 views

What kind of German bike is this?

I want to buy this second-hand bike but the person selling it lives in a different city and I can't go there at the moment. However I can't explain it but I really like the bike even though I only ...
2
votes
0answers
44 views

What handling differences should I expect when moving from a bike to a Recumbent Trike?

I have been riding a normal bicycle, I just purchased a used Sun EZ-3 SX Delta Trike. I only have about a dozen miles on it on a few short trips. There is an answer here indicating some of the ...
2
votes
0answers
41 views

Internal Roller Brake Problem

I have Shimano Inter M Roller Brakes on my bike. I felt the rear brakes were a bit light after riding 800 or so KM (total mileage on my bike so far) so I thought maybe theres a bit of cable stretch ...
2
votes
0answers
45 views

shimano fc4400 double chainring replacement

I am looking to replace my Tiagra fc4400 52t chainring, however it seems to be out of stock everywhere. Based on the parameters (130BCD, 52t) I found a few alternatives, however all of them are 10 ...
2
votes
0answers
65 views

Can you identify this Sachs hub?

I recently picked this up along with a couple of old wheels. I don't know it's age or history. I've only got as far as identifying it as a Sachs. There are no other markings apart from the logo ...
2
votes
0answers
185 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. ...
2
votes
0answers
73 views

Motobecane Sprint Retro Fixie

Question for rebicycling a Motobecane Sprint Blue. I have a desire to rebicycle this Motobecane Sprint into a semi retro style with the orginal theme. In short i would like to purchase the same ...
2
votes
0answers
829 views

Why does coaster brake hub growl when coasting but not when braking or pedaling?

I have an old two-seater recumbent trike with coaster brakes. One of the rear hubs rumbles terribly when the bike is coasting. When the brake is on, or when pedaling, it doesn't make a noise. I assume ...
2
votes
0answers
410 views

Serial numbers on bottom of a pedal crank housing from a 50s era Schwinn?

Can someone please explain what these three numbers mean on the pedal crank housing? I believe this to be the pedal crank housing from a 1956 Spitfire Ladies Bike. The Schwinn Serial reads M0D502 (...
2
votes
0answers
426 views

Does this abandoned 1976 Murray Alpine 26 I found have any significance or worth?

So earlier this week behind a local school I discovered something remarkable. Someone had put a old, wrecked women's bicycle in a pond. The wheels toast, the chain rings are useless, rust in many ...
1
vote
0answers
17 views

2 wheeled trailer - wheel position/weight distribution

Two wheeled trailers usually have the wheels in the middle as far as I know. I understand this minimizes additional weight on the back wheel of the towing bike. But wouldn't moving the wheels back on ...
1
vote
0answers
31 views

Identify this frame year and build

I am interested in picking up this frame for a rebuild project. I can't find info on which year this is or what model. Most models seem to have a black rear triangle, presumably carbon. After ...
1
vote
0answers
29 views

Nexus 3 Speed Hub Up Steeper Hills Turns Weird

I have a Linus Roadster Sport that has a Nexus 3 speed hub on it. It shifts gears just fine but I noticed recently that when I have it in first gear to go up a somewhat steep hill, the pedals turn ...
1
vote
0answers
6 views

Burley trailer hitch noise

We tow a Burley Nomad trailer behind our tandem. Love the trailer, but the hitch rattles and makes enough noise to be annoying. Grease or chain lube quiets it temporarily, but not for long. Does ...
1
vote
0answers
129 views

mixed MTB/road bike for touring: uncleanliness of a Frankenstein setup

It appears that there are similar threads, so I'll reformulate it with more specific questions and taking the cue from comments. I am assembling my brand-new touring bike on a LHT frame, and I'd ...
1
vote
0answers
31 views

Replacement seatpost clamp for Saturae seatpost

I have destroyed the clamp that connects the seatpost with the saddle on my Mekk. The seatpost is Saturae. Can someone tell me what type of clamp i need and where I can get it? Its a one bolt seat ...
1
vote
0answers
47 views

Joe Blow bike pump failures in one way valve

I used a bunch of Joe Blow bike pumps to pressurize water bottle rockets. Occasionally water squirted back into pump. After a few weeks of use, the one way valve failed. How can I fix this or prevent ...
1
vote
0answers
44 views

How tolerant is the range of front derailleurs?

Say you have a front derailleur cited as having an 18T range, with a 42T main ring. According to the specification, the smallest inner ring can be 24T. But how strict is that? Is it possible to get ...
1
vote
0answers
26 views

The correct pulley/cog for a shimano tourney tx35 rear derailleur?

One of the cogs broke on my Schwinn Ranger and was wondering how the sizes ratios work on derailleurs? What would be the correct cog size to get for shimano tourney tx35 Rear Derailleur? Thank you
1
vote
0answers
23 views

Better to go with a longer spindle length bottom bracket or shorter?

I have a 1987 Panasonic dx1000 that I am converting to a single speed. I was planning on replacing the bottom bracket. To get the measurements I measured the tube to be 70mm (2 3/4") and the spindle ...
1
vote
0answers
36 views

Fork trail vs chainstay length in steering

Is fork trail or chainstay length is a bigger determinant in the overall steering of the bike? Consider an arbitrary frame that I think is steers too slowly. I'm going to rebuild it because I want a ...
1
vote
0answers
70 views

Semi-slick 29x2.4 (or larger) tires

I have a set of Velocity Dually 29” wheels. The interior rim width is 39mm. I currently have Surly Knard tires but get a lot of buzz when riding on pavement. Ideally, I'd like a set of tires that run ...
1
vote
0answers
57 views

Bicycle tire date decode

I bought a new bike for my 3 year-old. 12.5 inch tires, "yida" seems to be the brand name. My earlier research suggests that some bike tires have date codes, in the form of circles with an x in it, ...
1
vote
0answers
49 views

Hydraulic Disc Brake Pad Replacement

I have AVID Juicy Brake pads, the time has come to replace the front pads. The old pads are very worn. The new ones have lots of "pad" compared to the old ones, of course. I've tried to install the ...
1
vote
0answers
34 views

Fender/mudguard that detaches with front wheel, is there such a thing?

I have a Carrera Tanneri Cyclocross Bike identical to this one with 700 x 35c wheels. I got some mudguards with it that were a bit too wide so I changed them for some generic plastic ones that ...
1
vote
0answers
57 views

Shimano Nexus 3 coaster brake screeching sound

When I brake hard/er with my Shimano Nexus 3 coaster brake it makes a loud screeching sound. Like really loud, everybody on the street would hear it and turn around. Since I know it's all internal all ...
1
vote
0answers
84 views

Shifting problems after removing and replacing rear wheel

I had a mysterious flat tire on my rear wheel after I had left the bike standing for the workday. I removed the wheel and changed the inner tube. I didn't think anything went wrong while doing that (e....
1
vote
0answers
27 views

Bike rack or similar storage options for child's bike (16" wheels)

My 4 year old has taken to riding with abandon, and we're starting to get into summer, where we hope to do some trails together. I have a rear wheel bike rack which is sufficient for storage of what ...
1
vote
0answers
61 views

Difference between Campagnolo quick release skewers

All, There are several models of Campagnolo road quick release skewers, including the Type 20, Type 40, Khamsin, Record, and Bora/Hyperion/Bullet models. The price differences between the models ...

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