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Questions tagged [frames]

Bicycle frame construction, selection, maintenance, and repair.

6
votes
2answers
721 views

Cracked frame riding into the back of car, what's salvageable?

Stupidly rode into the back of a car, due to a moment's inattention. I pretty much hit it at full pelt, though I was riding uphill at the time. The frame cracked, as this photo shows. Any idea what ...
6
votes
2answers
950 views

Is this a cracked frame?

Here's a pic of my Rocky Mountain Altitude 750 2014. It's the area where the top tube meets the down tube / Bottom bracket. Is this a cracked frame or just cosmetic problem? Thanks
0
votes
1answer
166 views

Need to identify this Frame Please

Need help identifying this frame, year and original spec please. It's a Giant TCR carbon frame. Frame number is GH1B037. Stickers in down tube Giant 3 but that's all I can get at the moment. Any help ...
3
votes
1answer
113 views

Big hit 2 chainstay design

Hi guys this may have been brought up before but any advice would be great. I've got a 2007 model specialized big hit 2 fsr. The frame seems an odd design to me where the main pivot is behind the ...
8
votes
2answers
815 views

Is my frame cracked?

I just picked this frame up for $100. Is this a crack? It looks and feels deeper than a surface scratch. I intended on this being my 1st build, should I continue? I hope I didn't waste my money
3
votes
3answers
935 views

Stripped threading on upper rear rack bracket

One of the rear rack holes on my aluminum frame have become stripped after a year of taking the rear rack off at least once a week. I've been using this bike for commuting and weekend riding, so I ...
2
votes
3answers
921 views

Harsh Winters bike - Steel vs aluminum frame?

I am looking to a buy a single speed commuter bike which I can also use through the harsh winters here. I have narrowed it down to two bikes - One has a 6061 Aluminium frame while the other has a hi-...
1
vote
2answers
3k views

carbon frame chipped

today while I was riding I lost control of my bike; it was nothing serious, I even fell "standing", but my bike fell on a rock and the carbon frame was chipped. Should I worry about the damage? I ...
3
votes
2answers
810 views

Is it possible to repair a dent on frame?

Hi, I found today dent on down tube (13/14cm from head tube). I have two questions: Is it possible to repair the frame? Is it safe to ride the bike after this Main frame is aluminum. The dent is ...
3
votes
1answer
326 views

What are these holes for in my Diamondback Sorrento?

The holes are threaded and 20mm apart. There are identical holes on the other side where the gears are. Can I install disc brake calipers through these holes?
-1
votes
1answer
112 views

Jc higgins manifold bike [closed]

I have a jc higgins bicycle with manifolds and I want to no if the model number is correct the number is mod 502 307 thanks
0
votes
1answer
129 views

Can I Interchange Wheel Sizes On One Frame?

So, I'm looking to see if I can build a bike and on the one hand I want to use 26" wheels, but at the same time, I want to use 27.5" wheels for another purpose. Is it possible to have a frame with a ...
-6
votes
3answers
2k views

What color bikes for Guys? [closed]

I know color is a personal choice.. Obviously guys will not get pink but other than the famous black what color bikes should guys look for?
0
votes
1answer
355 views

Grand Canyon AL SL frame size - S vs M [closed]

Checked Grand Canyon frame sizes and can't decide which one is more suitable for me: S or M. My height is 170cm while S frame recommended height is 162-172cm and M is 172-182cm. S frame comes with 27....
3
votes
3answers
567 views

Why does this bike have bosses on the bottom of the down tube?

What can the bosses on the down tube, next to the front wheel, be used for? The only thing I can think of is a mountain bike style mudguard, but I've only seen ones that clip on. Evans' Cycles ...
2
votes
2answers
1k views

Is it ok to sit on the top tube of my Cannondale CAAD12 (2017 model)?

I just picked up my new Cannondale CAAD12 bike the other day. During my first ride I occasionally was sitting on the top tube (waiting for traffic lights etc). After the ride was over I actually ...
0
votes
3answers
137 views

How should a good CX riding position “feel” (alternative to highly scientific measurements…)

I'm switching from MTB full-suspension down-hill riding to something more flat - at the moment I'm looking at a CX for 80% road, 20% offroad usage. Unfortunately, I've never, except for short test ...
1
vote
1answer
291 views

Cannondale SAVE frame technology in entry price [closed]

I'm wondering if the so called "SAVE" technology from Cannondale makes any difference in the enry-mid price such as Cannondale Trail 4? (they publicize as a micro-suspension technology). In concrete ...
2
votes
4answers
139 views

How to attach graphics to frame

For attaching graphics to a painted metal bike frame, is there a better option than Scotch tape or clear packing tape? I'm looking for something transparent and adhesive, but not so adhesive it can't ...
0
votes
1answer
88 views

what is the official site of diamond bicycle or frame(not “diamondback”) [closed]

im go to shop and buy a bike that its name diamond not diamond back has shimano gears and vbreak and has kenda tires and frame is steel do any one know this bike is made in where? and what is official ...
3
votes
1answer
487 views

Carbon fiber crack?

Bought my first carbon fiber bike last month. Just found this damage by the rear derailer. How can I tell if this is just a chip in the paint or of the frame is damaged? The bike has not been in ...
4
votes
1answer
177 views

Can this frame be saved?

I had a little accident and went over the handlebars. I'm okay, I was able to ride the bike home, but it is obviously bent. Everything else on the bike seems to be fine, the wheels are true and ...
1
vote
2answers
113 views

How to choose a frame to be sure it fits to the owned components?

I have parts from another bicycle which got it's frame broken. What criteria should I check before ordering a new frame to avoid compatibility issues with old parts?
-1
votes
1answer
147 views

can you help me identify my haro frame?

Ive been searching on the internet and i could not find the name of this frame.
0
votes
0answers
58 views

I need some help with frame model

i thinking about buying this bike, its posted on some auciton portal. unfortunatelly, the guy doesn't know frame brand. maybe by any chance there is someone, who knows it?
4
votes
1answer
1k views

How to check carbon frame for cracks

Yesterday, a little boy hit my carbon framed road bike with his little bike while I was already standing. He was not very fast, the normal 'little-boy-dreaming-on-his-bike'-speed. So, nobody got hurt, ...
3
votes
2answers
422 views

How to tell if Hollowtech II bottom bracket cups are aligned?

I've heard all over about how important it is that you face a frame before installing a Hollowtech BB, as the cups not being aligned could be the difference between your BB lasting 1k and 10k miles. ...
0
votes
1answer
104 views

road bike frame size

my wife bought me a used flat bar road bike for christmas. to her a bike is a bike, one size fits all. it was quite ovious to me that it was going to be way to large as it had a sticker on the frame ...
0
votes
1answer
238 views

Help choosing between two frame sizes based on my dimensions [duplicate]

I would really appreciate some help choosing a size of bike frame. I am stuck between choosing the large or the extra large. I may go down the route of getting professionally checked on the bike, ...
0
votes
0answers
199 views

Help 9mm axle in a 15mm hub on the rear

Im getting a new back wheel for my norco charger 7.2 and the frame only takes a 9mm qr, the new wheel i will be getting the mavic crossride mtb 2017 has a 15mm hub any suggestions on what i can do?
1
vote
2answers
938 views

Is there anything wrong with fat blobby frame welds?

Are fat blobby welds inferior, other than aesthetically? Here's three examples, one's a BSO, one's a decent/good Trek and one's an expensive Felt downhill full-suspension bike.
7
votes
4answers
867 views

How has hardtail MTB geometry changed in the past 10 years?

So I have been sitting on my 2005 Specialized Rockhopper because it is such a good fit (23" bike I'm 6'6") however I probably haven't ridden it in 5 years as it needs a new front fork. I'm just ...
-4
votes
1answer
100 views

What kind of frame is this the number is. ACS8E03286 [closed]

. This a green frame and I'm trying to figure out what it is.
4
votes
1answer
222 views

Installing mechanical group set on “electronic only” frame

I've been upgrading my Cannondale CAAD3 road bike from 2005 step-by-step over the years as things get worn out. Now its time to upgrade the frame. I have an eye on a Cannondale SuperSix Evo Hi-Mod ...
0
votes
1answer
94 views

What to do If your pedal are squeaking and are not straight?

I have a dtb and the pedals aren't straight they are kind of bent It seems that something is broken in the place where they are join. update: It's moving sideways and the outer bolt are quite slanty ...
4
votes
1answer
90 views

How to measure a frame to find an appropriate rim?

Question: How does one measure their frame in order to know which size rims will fit? Context: Flatmate left a few months ago, forgot (perhaps intentionally) a Traitor Cutlass frame. When asked, he ...
3
votes
1answer
666 views

Is this just the paint cracks?

It is on the dropout of my new tarmac, one month old. The shop owner said "It's normal for this side to crack it might be from the chain" But when I did test the chain it didn't touch the frame (...
1
vote
2answers
645 views

Can my bike have disk brakes fitted?

I just bought this bike and I want to put disk brakes on. I searched on the web for answers but I only could find a bad picture and I couldn't see if it had the same holes at the sane please as my ...
2
votes
1answer
390 views

full suspension whole/frame only mountain bike box dimensions

i am planning to buy a full suspension whole or frame only mountain bike (commencal meta am v4.2). what boggles me is the dimensions of the box when it is shipped because the shipping price is really ...
5
votes
5answers
2k views

Adapter for moving bottle cage up/down while using frame's bottle cage braze-ons

Are there adapters available for moving a bottle cage up/down in the frame? I am trying to move my seat tube's bottle cage down 4-5 centimeters and I prefer using the braze-ons. Note: the question is ...
2
votes
2answers
598 views

Frame/fork compatibility

I have a singlespeed/track geometry frame and I am after a fork that matches it. Besides the diameter of the steerer tube (it's 1 1/8"), what should I be looking for in the fork specs to be sure ...
0
votes
1answer
624 views

Bike size - will a 2cm make a difference

I am buying a Cannondale Synapse 105. I have to buy used, not new. There are two I am considering, they are identical except one is 54 cm and the other is 56 cm. My height is 5' 10/11". I have read ...
3
votes
1answer
310 views

BB30 to BSA frame conversion with internal cable routing?

I'm interested in using BSA crank parts with a certain BB30 frame and I'm a little unclear about cable routing, I'm hoping somebody here can help clarify the confusion. I'm considering purchasing a ...
3
votes
1answer
182 views

Cyclocross Frames and Disc Brake Compatibility?

I'm looking for some guidance on how to determine if a certain disc brake is compatible with a certain cyclocross frame. Specifically, here is my particular situation. I have an extra set of Spyre ...
1
vote
1answer
152 views

Short inside leg body: smaller frame?

I have a bit of a disproportionate body. I am 176cm (5'9") tall, but my inside leg height is only 76cm (2'6"). I want to build a fixed-gear bike and I am looking for a frame of the right size for me. ...
0
votes
0answers
116 views

What kind of bmx frame is this

The serial number starts tr110 and the bike is really light:
2
votes
2answers
876 views

Aero road bike frame - frame size number vs actual frame size?

I'm encountering some confusion on frame size and any clarification would be greatly appreciated. I've always been under the impression that a stated frame size was the distance, usually in cm, from ...
0
votes
1answer
6k views

Determining make model and year of bmx frame

I'm restoring a 20" bmx frame and would like to know maker, model and year so I can restore to original as possible. There are two numbers on the bottom of crank housing. MBI-...
1
vote
2answers
152 views

Best frame material for Leisure

I cycle less than 10kms a day but I'm a little on the heavier side as well. What would you recommend, Aluminium, steel or Carbon fiber frame (body)?
0
votes
1answer
113 views

Can I put 700x32 tyres on my Avanti Blade?

I'm kitting out my 2006 Avanti Blade for some touring in Tasmania, and the tyres need replacing. Currently they've got some 700x28's on there, but I want to go a bit thicker for touring in case I need ...