Bicycle frame construction, selection, maintenance, and repair.

learn more… | top users | synonyms (2)

0
votes
1answer
34 views

Rear disc calliper won't fit, disc mount bent?

I am upgrading my MTB to disc brakes. I have disc compatible wheels and a set of Shimano M446 Postmount callipers and 160mm rotors. Front fork is a Manitou who decided to jump on the Postmount wagon ...
0
votes
2answers
61 views

Rear derailleur hitting chainstay (video in the post)

I filmed a little video of the process: https://youtu.be/ejJsIWrrFTU Does anyone know how to solve the problem? Apart from attaching piece of rubber to the chainstay? It is really annoying, because ...
2
votes
1answer
150 views

Vandalized top tube

My bike was vandalized and the top tube is completely bust, is it possible to get this repaired/replaced? any advice here would be great, thanks a lot.
0
votes
0answers
46 views

Bike Frame Brand and Model?

enter image description hereI purchased this bike at a thrift shop and it rides like a dream. Out of curiosity I'm trying to figure out the make and brand. The parts on it seem to be very nice so ...
2
votes
3answers
169 views

First Road Bike - Some Options and Issues

I am looking the market for my first road bike. I am planing to be using the bike, couple times per week for 1 - 2 hour rides, and maybe on the weekend some longer ones, around UK Yorkshire. There ...
0
votes
1answer
72 views

What accommodations might be made for riding a frame 4'' too large?

I have been offered possession of a very old and interesting bicycle, made in 1933. It appears to be in quite good condition, and has a lot of interesting history. However, it features a 26'' frame, ...
3
votes
3answers
110 views

Best kind of bicycle for lower back issues?

I've ridden bikes all my life. Now nearing 50, for the past year or two I've noticed that when I ride over 20km or so, my lower back gets extremely painful - enough to make it not possible to ride. ...
0
votes
1answer
146 views

Shimano Hollowtech II bottom bracket: milling the frame necessary?

In a bike shop I recently asked for bottom brackets. The seller said, when choosing a Hollowtech II bottom bracket (like SM-BB70), compared to Octalink/square taper bottom brackets the outer (lateral) ...
0
votes
2answers
166 views

How do I tell the difference between bike brands

I have a 20 inch BMX bike. It was given to me with no stickers or identifying marks on it. How do I tell the difference between brands?
0
votes
2answers
117 views

How to repaint a Carbon bike frame?

I have recently purchased a Specialized Roubaix SL4 Elite Disc carbon frame bicycle - But I am not particularly happy with the colour. It is charcoal and white. I like to have a brighter colour. Is ...
-1
votes
1answer
80 views

Frame not faced for BB. Strip the paint or leave as-is? [duplicate]

So I just got my new frame from the LBS. They were supposed to face the frame, but only faced the head tube (hopefully, can't check it since the headset is already installed.). Sadly, they didn't ...
0
votes
1answer
126 views

unknown make model and year

enter image description here! Can someone please help me identify this frame? I have tried searching the net for same lugs design but I can not find anything that is similar to the lugs of this ...
0
votes
2answers
107 views

Do I need to chase a thread before installing a bottom bracket on a new frame?

Currently I'm building a new Surly Cross Check, and it needs a 68mm BB (english threaded). Furthermore, I plan to use a cheap $15 shimano BB with JIS square tapered interface, nothing special. Do I ...
0
votes
1answer
119 views

Trying to figure out the Brand/Make of this bicycle?

Got this from a friend hand-me-down style. Got some work to do on it to make her roadworthy. But it's been painted, and I can't see a logo or name on it anywhere. Steel Metal Frame. That's about all ...
0
votes
2answers
77 views

Remove paint from the head tube

I'm planning to build a new bike from scratch. Part of that is buying a new frame, and possibly facing/reaming it. That's actually the part I'm scared of the most. Fortunately, the brand I'm ...
1
vote
1answer
95 views

Swapping a road bike frame for a bigger one?

I happened to be given a decent bike - Trek 1000 - in a good condition. The only problem is that the frame is only 56 cm while I am quite tall so I need ~62 cm. Is it possible to take all the nice ...
0
votes
0answers
88 views

how to paint your bike in flat colors?

I'm painting my bike matt black I already have etching primer and a project source matt black I dont know if its good for the primer any suggestions and do any matt painting need matt clear coat??
0
votes
3answers
225 views

Water inside bike frame

My latest "project" involves my bike, i.e. I want to perform a complete renovation of it. This involves changing rim, complete shift group, brakes, hubs, carrier etc, just keeping frame, seat post and ...
2
votes
3answers
371 views

long distance touring: is high tensile steel silly?

I am planning a touring trip, let's say around 10'000 km, across Asia more or less. I have no intention at all to buy one of those several thousands - worth touring bikes. Apparently, on a lot of ...
0
votes
0answers
53 views

Size advice needed for Revolution Country Traveller touring bike

I'm about to by my first touring bike. I've got a very tight budget so I will probably order a Revolution Country Traveller from Edinburgh bicycle cooperation as it looks like it will suit my needs. ...
0
votes
1answer
99 views

Mongoose stamped vs. unstamped

What's the difference between a Mongoose that has logo stamped on frame and a Mongoose with no stamp on it?
5
votes
5answers
481 views

What can I do about a cracked frame?

I noticed the other day that my frame has a crack in it! I believe that it's my seat post causing the problem. A couple of questions really, a) how serious is this? and b) can it be repaired? Edit: ...
3
votes
2answers
369 views

Is it safe to ride a steel bike with a dented/buckled frame?

I just noticed, to my great sadness, a small-ish buckle/dent in my diagonal lower tube. (I'm riding a Cooper T200 single speed.) I just moved house; I hope I didn't do it. I probably did. It's about ...
1
vote
3answers
130 views

How do I make my frame water tight?

I am trying to remove the rust from inside my steel frame. There are, however, a few small holes in various places along the frame. Any tips on how I can make these water tight so that I can fill it ...
3
votes
2answers
669 views

Trek Aluminium Grade Comparison

Looking through the Trek archives, I see they have frame materials described as: Alpha Black Aluminum Alpha White Aluminum Alpha Gold Aluminum Gold Series Aluminum 100 Series Alpha Aluminum etc ...
2
votes
1answer
178 views

Linseed oil application to the inside of a steel frame

Is the application of linseed oil to the inside of a steel frame still recognized as a good way to prevent the formation of rust on the inside of the frame?
0
votes
1answer
93 views

Is there a way to remove the dent/bend?

I have a 2005 KHS Flite, which I am fairly sure is a Reynolds 520 frame, that I absolutely love and have morphed through many variations (the original brakeless fixie, then both breaks free-wheel, ...
1
vote
1answer
146 views

2mm clearance between the chainstay and the rear tire

I use a pair of club roost cross terra (27 1 3/8) on a vintage raleigh bike (maybe it's raleigh record). Originally the bike had 27 1 1/4 tires. If I'm correct, 1 1/4 is 32mm wide and 1 3/8 is 35 mm ...
4
votes
3answers
208 views

Size question. Performance v Comfort

I was checking some bikes on Decathlon (a large sports orientated chain store) and I found this size guide for some of their BTwin bikes. On their chart [pdf] that maps rider measurements to bike ...
0
votes
0answers
62 views

Finding out make and year of my bike

I was given this bike just days ago. On the bottom of the bike where the pedals are connected to the frame there are two numbers stamped in the frame. They are as follows... 661-475820 and 000637390. ...
0
votes
0answers
86 views

Who has information on this Fondriest Bike we found? Any good?

Does anyone here know anything about this old Fondriest bike? Thanks!
-2
votes
1answer
131 views

What is the correct frame size for me?

Well I want to buy this used giant escape 3 for a good price but the frame size seems to be a bit big. It is a shame though, Because it's at a great price. I am 5'7 and the Frame size is 23 inches. ...
0
votes
2answers
119 views

How to protect underneath the frame?

I've searched and only found this and this. But what I am really after is on a solution on how to cover/protect the underside of your frame. I have a carbon road bike with mostly a white painted ...
0
votes
0answers
112 views

What frame is this?

could you help to find out the brand, type, & year model of this MTB frame (attached) ? Best regards.
2
votes
3answers
690 views

Does a high MTB seat post risk frame breaking

On a full suspension MTB, does a high seat post (extending from frame by 25cm, 10" or more) contribute to frame weakness, should one look to have a bike with a tall seat tube, or are MTB's designed ...
1
vote
3answers
365 views

Is there a cheap touring bike that is as light as a road bike

I want a touring bike that is as light as a road bike - basically I want a road bike with a touring bike geometry - ie around 10 or 11Kg, excluding pannier racks, and other add-ons. My price range ...
1
vote
4answers
323 views

What are the practical limitations of a road bike compared to a mountain bike?

I grew up on a big box store mountain bike. I want to get a road bike for my commute, but I'm curious about the limitations I'll experience. I know the benefits of a road bike: lighter weight, less ...
0
votes
1answer
232 views

Does anyone know what kind of bike this is?

I found this bicycle a while back and have been planning on either fixing it up (if it's worth it) or selling it. All I have, really, is the frame. I haven't been able to find out exactly what it is ...
1
vote
1answer
124 views

Decal or paint?

Can someone tell me whether the visible part of the logo on the frame is a decal or a pain directly on the frame? If it's a decal, then where can one get a custom decal with a metallic finish? If ...
0
votes
1answer
143 views

would I be able to put new rear wheel with 12mm x 142 axle on my 2007 RM Element 70 frame?

would I be able to put new rear wheel with 12mm x 142 axle on my 2007 RM Element 70 frame in terms of dropouts compatibility?
1
vote
3answers
518 views

safety of carbon fiber bonded to aluminum fork crown

I recently experienced the failure of the carbon fork on my 2001 K2 Mod3 road bike at 20 miles per hour. Yes, I was injured. My question is the bonding agent that secures the carbon fiber fork to the ...
0
votes
1answer
95 views

Behring custom made bike

Hoping someone can help me as I don't know much about bikes. I bought a 10 speed bike at a garage sale which the owner said was custom made by a bike maker in St. Louis, MO. She said the frame was ...
1
vote
0answers
142 views

Schwinn Vestige no longer lights up; why not?

I have the Schwinn Vestige and a very long, bumpy, dirt/gravel driveway. A few weeks ago, we rode downtown and the frame lit up amazing, as it should. On the way home, it was not lit up. Hmm. After ...
1
vote
1answer
43 views

Changing Frames

I just had a crash and wrecked my Cube hardtail mountain bike. Can I put all the parts, wheels, Reba Rock Shock, Shimano gears etc off my hard tail on to a full suspension frame?
2
votes
1answer
102 views

Can I swap my fixie frame and still keep all my old components?

I would like to change the frame of my fixie, it's too small for me now. It's a PureFix Bravo 50 cm, these are the specs. I would like to change the frame for a bigger one, a 54 or 58 cm one. Is it ...
1
vote
3answers
220 views

Reuse oversized hardtrail frame to build a commuter bike? [duplicate]

I have a spare hardtrail frame which is too big (20.5") for me (5'7") for riding trails. Would it make sense to build a commuter bike for me as road/touring bike frames are generally larger than MTB? ...
0
votes
4answers
374 views

Bike too big for me

I bought a bike online based on a recommendation that a 56cm frame would be ok for me (I am 5ft 10, with 30" inside leg). However I think it is slightly too big. I have to lean forward a lot and my ...
1
vote
1answer
112 views

How to test the endurance of a frame?

I am planning on throwing a challenge to create a bamboo frame for a unicycle, but to declare a winner I shall test some endurance criteria. The frame should be able to withstand this kind of ...
4
votes
3answers
632 views

Titanium frame has a crack - advice needed

I've found a Titanium bike frame on eBay. It's very cheap and the owner says that it has a very small crack on the seat tube where it connects to a bottom bracket. See at the image below: I've ...
-1
votes
1answer
156 views

What differs between the Cervelo S5 and S5VWD

Looking at the Cervelo S5 series there are two different models but the Cervelo page offers no mention of what differences are.. could someone enlighten me? Looking just at the framesets is there a ...