Questions tagged [frames]

Bicycle frame construction, selection, maintenance, and repair.

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-1
votes
1answer
98 views

Gravel bike frame material: carbon, aluminum, titaniul or steel? [closed]

For a long ride on a gravel bike, what is the best frame material?
4
votes
1answer
129 views

Damaged full-suspension linkage surfaces - creaking noises

I just got a brand new, high-end aluminium full suspension bike and after the first ride the bottom frame linkage (the big one, near the cranks) started making loud noises (video link with sound). ...
-2
votes
1answer
58 views

Help identifying BMX,frame, parts

Yeah I recently bought a bike the crank set caught my eye and a couple other things there's stickers on it but I'm not sure which ones are real and which ones are not besides the obvious to any help ...
8
votes
2answers
1k views

Frame dropout cracked, what can I do? (Allied Alfa Disc / carbon)

The frame thru axel hole/dropout cracked while using my wahoo kickr trainer. Is this crack dangerous? If it is, what can I do?
4
votes
2answers
411 views

Seat post nominal and actual size

If seatpost has nominal size of lets say 27.2, what is its actual size? Or other way around, if frame nominally accepts post of 27.2 what is the actual size of the bore in the frame? Obviously both ...
7
votes
4answers
6k views

Bike with a hi-ten steel frame for getting around the city?

Recently I bought a new bike which has the following characteristics: Size of frames: M (44cm) / L (48cm) / XL (52cm) Wheel size / Number of gears: 26 "/ 21 Frame: HI-TEN Steel Fork: HI-TEN ...
4
votes
3answers
2k views

Repair frame with crack by seatpost clamp

Is it feasible to repair a crack in a frame around the seatpost clamp? Being an aluminium frame I understand soldering is problematic. It doesn't matter if seatpost is fixed in place as per a solution ...
0
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1answer
44 views

Frame maker identification

Anyone know the manufacturer of this frame? Many thanks
2
votes
1answer
352 views

Why are bicycle tubing diameters often metric approximations of imperial measurements?

This is related to my previous question about seatposts and handlebars, but I’d like to generalize the question this time. The majority of bicycle tubes are metric equivalents of imperial sizes. The ...
4
votes
3answers
1k views

My chainstays have been eaten by rust, can something be done?

I hope you are all safe and sound and your Christmas time is at least decent in these pandemic times. The other day I decided to give a good clean to my steel city bicycle and I removed the stand, ...
1
vote
1answer
54 views

Headset upgrade, problem finding headtube dimensions for my 2020 Giant ATX 3

It's a 2020 Giant ATX 3. Does any one know how to find this info? Thx.
9
votes
7answers
7k views

Can this crack in the steel chain-side dropout be welded?

I have a thru-crack on the driveside dropout near where it meets the chain stay. The bike is an early 1980's steel frame Trek mountain bike. See pics. Bike rides fine otherwise and I have invested ...
0
votes
3answers
1k views

How to mount a kickstand on a bike with no kickstand mounts?

I have several bikes. Unfortunately, many of them lack the all-important kickstand mount which makes the bikes practically unusable for everyday tasks unless there's some possibility of mounting a ...
-1
votes
1answer
690 views

I'd like to know what kind of bmx bike I have

I got this frame in an old pile of junk ,can you please let me know what kind it it t/y
6
votes
4answers
789 views

Will grooves on seatpost cause rusting inside frame?

My bike has grooves in the seatpost as shown in the picture. The grooves do stop slightly further down the post, but the best saddle height for me is when the grooves partially go down into the seat ...
0
votes
0answers
62 views

What is this BMX?

I got this bike from a friend for free. I was wondering what brand could this bike be? Has Quando Hubs, Odyssey Pedals, Kenda Tires but no logo on the actual body itself.
1
vote
3answers
185 views

Bike identification

I am trying to identify this bike. It has a club cutout in lugs and 4 card suits on inside of fork crown. Frame's serial number is 75390. Also has direct frame mount above rim mafac Brake bosses. ...
1
vote
2answers
539 views

Is it possible to fit a 26" fork to a 29er bike frame

I want to buy a cheap frame and put parts from my old 26" (wheel and fork) and 15" (frame). Is this possible.
0
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0answers
114 views

Can anybody help me identify my road bike frame? [duplicate]

The serial number is located under the bottom bracket and its C0 30 402322. It was repainted and the fork is also been replaced. It has the downtube shifter mounts on it with braze on front mech ...
0
votes
1answer
84 views

Where purchrase cheap MTB frame? [closed]

I recently bought a Merida HT matts sub 60, and I like it but sadly it's way to big for me, I purchrase it more for the components since it was really cheap. I'm 165cm, and probably need 16inch frame, ...
7
votes
2answers
616 views

3D printing frames?

Are there any technical limitations that make 3D printing frames impractical? And, if it is just a matter of time before our technology is able to overcome any limitations (like manufacturing ...
4
votes
1answer
420 views

Scrap it or not

I purchased this Bottecchia full-carbon frame a a few years ago and built it up using Shimano 105 components. Shortly after the build was done it came off the rear mounted rack on my car and went ...
3
votes
2answers
202 views

Effects of rust on steel frame strength

I have some rust on my front forks. This question tells me how to deal with it, but I'd like to know whether it will be impacting the structural integrity of the forks. I'm planning on going touring (...
4
votes
1answer
254 views

Carbon frame chipped by chain - how to repair?

I found out my chain is damaging my frame near the cassette. How can I repair this? It was damaged by my cassette in the indoor trainer which I am not using anymore. This is how it looks:
1
vote
1answer
118 views

Bottom bracket compatibility

After two LBS's, a blowtorch and a tyre shops impact driver I finally have my bottom bracket out. It an aluminium frame if that makes a difference. On the drive side some of the thread is gone, ...
8
votes
1answer
209 views

How do I install this Ribble endurance SLR headset?

I've installed the bearings and now I'm struggling with which order to stack things. I can't find any documentation or manual of any description. I've attached a few photos. Does anyone have any idea?
4
votes
4answers
6k 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 ...
6
votes
2answers
1k views

Can and should one install rivnuts into an aluminium frame?

I have an aluminium frame, and would like to add another bottle cage. But there are no mounts below the downtube. I've installed rivnuts into a steel frame before, which worked well. Can I install ...
4
votes
4answers
12k views

How to pull a carbon seatpost out of a carbon frame?

How do I pull out a carbon seatpost on a carbon frame? It seems so hard for me... Do I need a special tool, or just ask help from a local bike shop? done with the seatpost. I made the frame and fork ...
5
votes
1answer
759 views

Bike seat tube is messed up

I was testing my seat and as I was sitting on the bike on the highest level of the seat post. My seat post came off and bent my seat post, so I ordered another, but now my seat tube doesn't allow my ...
4
votes
1answer
304 views

Identify vintage bicycle brand

I don't know much about bicycles but I came across one that I want to offer to my nephew since he is into vintage race bikes. I would like to know the original brand of the bicycle/frame since I want ...
11
votes
7answers
3k views

What are the most basic parts of a bicycle which cannot be upgraded over a period of time?

After reading this question: Cheap MTB with future upgrades v/s costly fully ready MTB, I myself had a question. What are the most fundamental parts of a bicycle? What are the things which we have to ...
3
votes
3answers
97 views

Replacing frame on mountainbike

Today while riding on a trail, the frame of my full-suspension MTB broke. It's been a long time coming, and at this point I'm happy that it didn't 'catastrophically' fail / I didn't crash. I think ...
6
votes
3answers
427 views

Does a highly visible frame colour improve safety significantly?

Studies have shown that wearing hi-viz colours, particularly on moving extremities such as one's feet, coupled with hi-viz helmets and cycling shirts, increases the chance of been seen by a driver ...
2
votes
1answer
268 views

Interesting frame, not sure what I got

I just bought this nifty looking bike, but alas I don't know the manufacturer or model it is. There's a logo with a silver looking "Z" and a made in Taiwan sticker. Any help you can provide ...
0
votes
2answers
679 views

Tapered suspension fork on a 2003 Surly Karate Monkey frame

Is there any way I can run a modern tapered 1 1/2" to 1 1/8" tapered suspension fork on a 2003 Surly Karate Monkey (Original frame style with V-brake and Disc Brake Mounts). I think it only works with ...
1
vote
2answers
139 views

Road bike (commuter) frame size problem

My height is 5'9", leg Inseam is 32". My bike frame size is 52cm, is it the right size? If it not then is there a possibility to get injured? I have no option left. I already purchased the ...
0
votes
0answers
75 views

Dent in Lower Aluminum Frame Of Cannondale Cyclocross

Recently purchased this bike second hand. How concerned should I be of this dent? It’s about midway down the lower frame.
0
votes
1answer
57 views

What bottom bracket will fit the Ribble Endurance SLR?

Will a Shimano Ultegra BBR60 bottom bracket fit the Ribble Endurance SLR frame? I cant seem to find any technical information on the frame anywhere?
1
vote
0answers
44 views

bike-frame-jig: customizations of a standard model - interesting features added [duplicate]

good day i am in the mid of creating a bike-frame-jig. the model is oriented at tanner w s jig: https://www.instructables.com/id/Bicycle-Frame-Building-Jig/ see some the parts (here as Acronyms ) he ...
9
votes
4answers
6k views

Installing a Bottle Cage without Mounting Screws/Threads

I have a Next PX 6.0 mountain bike. It did not come with pre-installed mounting screws/threads for a bottle cage. The frame has large oval-shaped tubes, so many attachments that come with bottle ...
5
votes
3answers
212 views

Zip ties to hold smart-lock on frame

I've recently bought a smart lock for my bike that can be mounted directly on the frame. Problem is that my frame has no hole for screwing it on the frame. So I improvised with with 3 zip ties on each ...
1
vote
0answers
77 views

Trying to estimate cost of replacement for a stolen bike [closed]

The frame says "Nova" and "Columbus". I don't know the serial number. I believe the frame is aluminum. Purchased 2nd (or third) hand in California about 6 years ago. Above is a ...
1
vote
0answers
204 views

What frame is this?

Could you help to find out the brand, type, & year model of this MTB frame? The "Gary Fisher" decal was added later and is not correct.
0
votes
1answer
75 views

Tire compatibility [duplicate]

My bike has a 19.5 inch frameset (49 cm) and rolls on a pair of 26 x 1.75 BTWIN Trekking tires. I want to go for thinner tires and I came across a set of 27.5 x 1.2 tires on the Decathlon webpage . I ...
1
vote
1answer
224 views

Method to remove and prevent rust on a Reynolds 531C bike frame?

The frame of the 531C Reynolds tubing is rusting, What is the most appropriate method to remove and prevent the rust? Would it be removing the rust and repainting? If so could you like me to resources ...
18
votes
6answers
6k views

How is this damaged aluminium frame likely to fail?

I had an unplanned collision with a car yesterday (everyone is fine, thankfully) but my bike – a Giant Revolt 1 – now has a lovely new pair of dents. I cycled it home from the collision (~6km) and it ...
4
votes
3answers
1k views

Properly sizing a frameset online (Ritchey Road Logic)?

Longtime lurker, first-time poster. My frame is cracked and I have mostly decent parts so I am thinking about just buying a frameset and paying the LBS to move stuff over. A friend suggested I look ...
0
votes
1answer
410 views

Are bikes with sloping top tubes lighter than bikes with horizontal top tubes?

For many years bicycles nearly universally had horizontal top tubes, but that has changed: now most bicycles have "compact" geometry, with top tubes that slope downwards from front to back. ...
4
votes
2answers
963 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 ...

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