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Questions tagged [frames]

Bicycle frame construction, selection, maintenance, and repair.

6
votes
3answers
1k views

Frame manufacturer not covering crack as saying it was crash damage

My Ti frame developed a huge crack in the frame a week or so ago. A pain I thought bit it'll be covered by warranty... The frame builder is now saying that it's crash damage. I really really doubt ...
4
votes
1answer
285 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. ...
6
votes
3answers
1k views

How much longer will my 10 year old frame last?

My friends say it will last forever, and not to worry about it. Online results show anywhere from two years to 25. I have no clue what to expect!! Let me give some context. I bought a decade old ...
1
vote
1answer
2k views

Bike Fit Confusion

A friend of mine has just purchased a 2016 Trek Emonda SL6 in a 54 cm frame size. He is 169cm tall and according to the Trek sizing chart (attached) he could fit a 52 cm or easily fit a 54. The ...
0
votes
1answer
100 views

Building a traveling bike, frames and components: where to buy in Europe [closed]

I am about to either buy either build a bike for medium-long travels, and I am struggling with differences between the european and american market offer (I live in France). Talking about the ...
8
votes
2answers
578 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 ...
5
votes
3answers
1k views

Should I ask for my money back - crack in Titanium frame

About 2 years ago I got my new bike - an Enigma Ti bike. The frame was customised for Di2 and I had hydraulic disk brakes fitted. An expensive bit of kit that was supposed to last forever and make my ...
5
votes
2answers
546 views

Is it normal for seat stays on new CAAD12 frame to be slightly warped/not straight?

The seat stays on my brand new Cannondale CAAD12 frame are slightly warped (not straight and slightly different on both sides), especially around the welding spots for the rear brake mount. I could ...
1
vote
2answers
662 views

Are there any major drawbacks to using a track frame as a frame for a fixed-gear or single-speed commuter?

I follow a few communities which have a lot of fixie and single-speed riders. Most of the riding discussed is commuting around the city, and often, riders will show off their new bikes, upgraded ...
1
vote
2answers
832 views

How do I bend my rear derailleur hanger (part of frame) back into place

Somehow I bent my rear derailleur hanger, how would one suggest bending it back into line? In my case the rear derailleur hanger forms part of the frame and therefore if I snap it when bending it back,...
2
votes
1answer
111 views

Unknown Balfa Road Bike

I have a Balfa road bike which I cannot find any information on or pictures anywhere. I would like some help identifying the bike model, the original parts, and the frame. What I have found so far: ...
6
votes
2answers
404 views

Steel Frame Creaks while Braking

My steel BSO has developed a creaking sound when I apply the front brake. I only hear it when I am beginning to brake, when there's not a lot of pressure being generated. I can recreate this sound by ...
1
vote
1answer
190 views

Posture on mountain bike long term

I have been looking at sizing guides because I'm contemplating ordering a new bike and found out that I'm the totally wrong size for the bike I actually have. I'm normal proportions and 5 foot 7, but ...
3
votes
1answer
1k views

Lifting a road bike by one of the seat stays ok?

Is it ok to lift a road bike by one of the aluminium seat stays? Yesterday I realised I was doing this when inspecting the rear derailleur during a ride (front of the bike facing down, all the weight ...
1
vote
1answer
77 views

How do I keep smallest gear on my crank shaft from contacting frame

I have an old Trek 8000 ZX that I am fixing up. I had to replace the bottom bracket and I believe I successfully did that. The bike did not have a crank set to work with so I salvaged one from a pile ...
4
votes
3answers
3k views

Frame Or Paint Crack (Cannondale Super Six Carbon)

I am about to pull the trigger on a used 2012 Cannondale SuperSix bike. This would be my first bike and I'm very excited. However I am a bit concerned about some cracks. Seller claims paint is ...
0
votes
1answer
201 views

Single speed dirt jump specific frame for general riding

I am in the market for a new bike and come from a background of mainly cross country (XC) / all mountain (AM) type riding but have ridden BMX also in the past. I'm not averse to standing up and only ...
1
vote
2answers
142 views

How can I treat an aluminium frame ready for restoration?

I have an old aluminium framed mountain bike which has developed some 'oxidation / corrosion' underneath the lacquer -- it kind of looks like little white worms! The frame as original has a nice ...
13
votes
3answers
1k views

What is this spring between the fork and the frame?

Sometimes on a bike I see a short spring, most often covered in rubber, connecting the fork with the frame: What is the purpose of it? The only thing that comes to mind is stabilising the fork so it ...
4
votes
1answer
465 views

Denied warranty claim on carbon bike due to impact?

I saw a little crack on the bottom section top tube of bike which is a kestrel talon. I took it the bike shop to see if it was covered under warranty. I have fallen once or twice from the bike but I ...
0
votes
1answer
240 views

What kind of bike is this

Good day. Need help regarding a bike I found. No idea what kind of bike it is, does it have value or not, and could I have it restored with its current condition? Any idea/information about this bike ...
2
votes
4answers
3k views

Can I use a hardtail for MTB trail riding?

So, I have a tight budget of 600 USD. Now, I just wanted to say that I live in a big city, but I do want to ride trails more often. My intended use with the bike is to ride trails, and perform ...
4
votes
1answer
244 views

My santa cruz heckler ghost shifts from frame flex. Is there anything I can do?

I just bought a 2013 heckler used and found that it ghost shifts under heavy pedaling. I weight 230 so I am probably putting more pressure than average. But this only happens when I have smallest cog ...
6
votes
3answers
3k views

What's the strongest way to bond a cable stop to an aluminum frame?

I recently picked up another well loved GT road bike frame- it's in great shape aside from a missing downtube cable stop. The model is a ZR 4000 probably from 1999, it's 7005 heat treated aluminum. My ...
2
votes
1answer
574 views

650b for small rider?

I'm considering getting a bike for my friend; she is interested in riding road/gravel with me, doesn't own a bike of her own, and doesn't know too much about what's available. She is about 5 feet ...
1
vote
1answer
173 views

From Trek to Surly - advice on frame size

I have a Trek FX7.3, frame size 22.5 inches. I'm looking to swap the frame out for a Surly Cross Check. Has anyone done a similar build? Also, what frame size would you recommend that I go for? Just ...
3
votes
2answers
337 views

Should my aftermarket frame have a serial number on it?

I was riding a mostly custom WTP Crysis frame which had a serial in case the bike was lost or stolen. I snapped the drop out arms on Sunday and ended up buying a new FBM Hard Way frame. I checked all ...
4
votes
4answers
1k views

I have a hybrid bike which the frame is too big, is there any modifications I can make to make it more comfortable?

I bought a hybrid bike from halfords around 6 months ago, however i have only recently had chance to ride it. I have found that the frame is too big, they wont exchange or give me a refund. I was ...
4
votes
2answers
492 views

I bought a used 20 inch bmx bike from bike shop but no one has any idea of the brand

Could someone help me narrow this down? I bought a new-used bike from local bike shop in Sacramento, California, USA. I do not know what brand it is and so were the bike shop. There are no stickers ...
0
votes
1answer
24k views

Converting frame size to wheel size

I've been trying to determine what size road or mountain bike I should purchase. All the charts I've found suggest what frame size I should have, but online shopping only lists wheel sizes. How do I ...
7
votes
2answers
389 views

What's this cotter pin on the barrel adjuster for?

I bought a new Salsa Colossal frame to build up and it has a cotter pin on the frame mounted barrel adjuster: If I turn the barrel adjuster too much, it is going to start digging in to the paintwork. ...
2
votes
2answers
163 views

Can't figure out the correct wheelset size for my Raleigh Rush Hour to replace the stock wheelset

I'm trying to order a new wheelset for my Raleigh Rush Hour. The problem being that my bike is at a friends right now and it might stay there for a bit, I can't remember what frame size I have and I ...
3
votes
2answers
812 views

How do we understand if caliper brakes can be installed on the frame?

I have a hybrid bike and I am converting it to drop bars. My problem is, as I am going to install STI's, I need to change brake system as well. I am using V brake types, how can I understand if I ...
2
votes
0answers
89 views

Chain vs seatstay with a 50T Chainring - BMX frame

I plan to put a 50T chainring on my bmx but I am afraid to have an interference between the chain and the frame. Does anybody know what is the critical distance between the seatstay and the chain so ...
3
votes
1answer
781 views

What fork size is 32mm (inside diameter on the frame) considered?

Good day, I'm new to the whole bike building process, but I've finally decided to make the step and build a semi-nice bike. I've bought a really nice aluminium frame 2nd hand, but its sizing has me ...
4
votes
1answer
421 views

Dual crown fork or not?

I currently own a 2015 GT Verb Expert. And after watching a Red Bull rampage video I started wondering can I put a 200mm fork on my Verb Expert. Or does my head tube need to be more angled. And is it ...
2
votes
1answer
231 views

How to build a lugged fork [closed]

I have an idea to build a carbon fork with aluminium joints. I don't have any experience in frame building but I want to read about it somewhere. Is there any good literature about how to build a bike ...
7
votes
3answers
804 views

Should I worry about rain getting inside my frame?

I commute to work every day and lock my bike on the street. I have a nice saddle so I remove my seat post and take it into work with me. This obviously leaves a hole open to the inside of the ...
4
votes
3answers
377 views

Bicycle frame identify HELP

A few day ago I got this bike from a friend for a restoration. He thinks it's bianchi but I am sure it's not. It has Wienman brakes, simplex derailleurs, 3ttt steam, ofmega hubs and ofmega crankset. ...
6
votes
2answers
675 views

Lugged carbon frame repair

In broad terms, I'm wondering if it is possible to repair a high quality lugged carbon frame, say a Colnago C60, that has been cracked in the top and/or down-tube. Normally once a carbon frame has a ...
0
votes
1answer
886 views

What is the best gear ratio for speed on 20inch frame [closed]

I'm trying to figure out the best gear ratio for my 20 inch frame
4
votes
3answers
1k views

optimum frame size for very small 5'2" female

I have a lady friend who's interested in getting into road cycling. The smallest frame sizes I've seen so far in the market are 48 and, in one instance, a 47. Is this about the most common and/or ...
1
vote
1answer
107 views

I just bought a frame off this kid in my neighborhood but don't know who makes it?

I bought this frame off a kid in my neighborhood for 100$. I looked like a cool freestyle frame. I built the bike up and just wanted to know if anybody had a clue to what company makes this frame? ...
4
votes
1answer
414 views

When to change road bike

I own this Fuij Roubaix 2008 model road bike, its an aluminium frame with carbon front and rear forks. I already did 25000km on the bike and replaced wheels, chainring, a couple of cassettes, chains ...
4
votes
1answer
586 views

Am I too tall to bother modifying my old trek?

I bought an old Trek 500 series road bike a couple months ago and have put love and parts into it but it's just too damn small for me (I'm 6'4"). All the post adjustments are at their safest limits. ...
4
votes
2answers
357 views

Seat Stay Replacement - Bridgestone MB-3

I am working to restore my first mountain bike frame, a "vintage" 1993 Bridgestone MB-3. Early on, I swedged the left seat stay so that it buckled a bit & rotated about 15 degrees inward. I have ...
0
votes
1answer
483 views

Why are post ~'80s bike finishes so “dull”?

It seems that (with some notable exceptions) bikes from about the '80s and earlier seem to have more pleasing finishes than later bikes-- is there a verifiable reason for this, either economically or ...
8
votes
2answers
3k views

How to carry a step-through/mixte bike

How can one carry a bike with a step-through/mixte frame effectively?-- In comparison, any diamond-frame bike is a breeze for me to shoulder regardless of weight (okay, carrying a 25+-kg roadster is ...
2
votes
2answers
5k views

25 degree rise stem vs 6 degree rise stem with taller head tube - how is handling affected?

All, I’m shopping for a new road bike with endurance geometry (more upright position and shorter top tube), 9mm drop saddle-to-bars. I’ve had a Guru fit done by a professional fitter. The main ...
0
votes
1answer
85 views

Comfort vs comfort [closed]

New to the sport of cycling and considering two bikes. The Domane trek 4.3 Disc 2015 and the Domane 4.3 trek 2014 . It's for a 120 km event. Which would give more body comfort in such a distance ? I'...