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Questions tagged [frames]

Bicycle frame construction, selection, maintenance, and repair.

2
votes
1answer
353 views

Replacing bike frame on BMC Alpenchallenge AC01

I have a BMC Alpenchallenge AC01 IGH Alfine 8 Speed 2017 size small. Although the size is appropriate for me, I would prefer the medium, but the small was 47% off, so I bought it. Now I have the ...
2
votes
3answers
1k views

Bike Frame Size for MTB Leisure Rides

I am looking to buy a bike for my wife on the internet, but the challenge is I do not know what frame will be most suitable for her. We plan to buy a hardtail for leisure rides on the weekends so we ...
5
votes
2answers
265 views

How do I check my steel frame for water ingress, and minimise the risk of rust?

I have a bottle cage on the upper side of my downtube, and yesterday I noticed that one of the screws has gone missing. I don't know when this happened, but it could have been months ago. I often ...
0
votes
1answer
86 views

What kind/model is this frame?

Can someone help me what kind of alpinestars bike frame is this, and where it is manufactured? Just got it a year ago.. I've already search alpinestars website but couldn't find this exact frame.. ...
1
vote
1answer
119 views

Durability of Seat and Chain Stays on steel frame touring bike

I've been toying with the idea of mounting a dynamo on my REI touring bike. Model is ADV1.1 and it has a steel frame. Dynamo attaches by a mechanism that clamps onto a seat stay and tightens with two ...
1
vote
0answers
133 views

Can anyone identify this second hand bike?

I am looking into getting a new (for me) road / TT bike and this came up but I think it isn't a Specialized Shiv... many thanks
3
votes
2answers
342 views

What to do with the new parts on an old bike I want to dump?

Three years ago I bought a second hand bike, which I used for cycling on average 10 miles a day (mostly commuting). It turned out to have many problems, so over time I replaced many of the parts on it ...
0
votes
1answer
359 views

Gitane Frame Identification Year [duplicate]

Was wondering if anyone can verify year of the Gitane frame Thanks Damian
3
votes
3answers
162 views

Size of old road frames compared to new ones

May I use an old frame (pre 1990) of same size as a modern road frame? For example by using a long stem and long seatpost. Or would I have to size up a lot? Concrete example: I ride a 56 cm Merida ...
5
votes
3answers
2k views

What is the potential danger of riding bicycle with cracked chainstay and how to fix it?

I got a bicycle that has this big tear in the chainstay. Is it safe for city riding? What is the potential danger? What could someone have done to cause this kind of damage? Most importantly what ...
-1
votes
3answers
259 views

Can I upgrade my XC bike with a full-suspension, carbon fiber MTB frame?

I want to have a full-suspension bike, but since I already have a XC bike with very light, high-end components, I thought it might be cheaper to buy a new frame that supports rear suspension, buy a ...
3
votes
3answers
513 views

How do I know if a given hardtail mtb frame is 'supposed' to have suspension forks?

How do I know if a given hardtail MTB frame is supposed to have suspension forks? I read somewhere that if you want to convert a suspension bike to a rigid you need 'suspension corrected' forks which ...
6
votes
2answers
2k views

What do you do if you find your stolen bike's frame on ebay?

I am 85% certain that I see my bike's frame on eBay. It costs almost 2k with all the components and I see the frame on sale for $400 with seat-post and fork only. All my stickers not in the pictures(3)...
4
votes
1answer
477 views

Dent in titanium MTB frame, is the frame OK to ride?

I have a early 90s Basso Ti Hardtail MTB bike (made by Litespeed I believe) which I bought from my room-mate back in the day. I've kept it going with regular maintenance and occasionally replacing ...
0
votes
1answer
165 views

Commuting bike with the bowed top tube

Those asian bikes that have the curved top tube? What are the pros and cons of having that kind of frame design? Are they uncomfortable in really long rides? Do they flex or bounce too much? In ...
3
votes
4answers
137 views

Choosing frame size when still growing

I am about to purchase a 2018 Kona Sutra touring bicycle but I need some advice on how to know which is the right size for me. My measurements are 174cm tall with a 79cm inseam. I was advised that a ...
2
votes
2answers
228 views

On frame geometry: does it matter so much?

I bought my MTB without much thought, really. I wanted a hard tail but thats about it. Now I'm researching on whether my bike is appropriate for xyz application. I've been looking at frame geometries. ...
7
votes
4answers
3k views

Installing a Bottle Cage without Mounting Screws/Threads

I have a Next PX 6.0 mountain bike that I bought at Walmart a few years ago. It did not come with pre-installed mounting screws and/or threads for a bottle cage. The frame has large, strangely ...
3
votes
1answer
193 views

Difference between a professional bike restoration place respraying and power coat company?

Ok, Apart from they're a specialist so they can do decals, coach lines, rebuild/strip the bike, is there any difference in how they would paint it? The professional places charge £200-300 (UK) to ...
3
votes
1answer
159 views

What are a 'coach lines'

So contacted a bike restoration place for a quote to respray my BSA, the guy asked me do I want 'coach lines'. Too embarrassed to ask what they were I just said yes. So what are they exactly?
1
vote
2answers
582 views

Phillips brand c1950? Please help me identify this awesome old frame!

Here is all I know: Seems to be a 26" frame. Lug construction on main frame but the seat stays are bolted on. Serial number at seat clamp: 3051CT Has strange hole in bottom bracket shell. "Made ...
4
votes
1answer
156 views

Carrera Virtuoso Rear Derailleur hanger bolt hole with HeliCoils?

So, I broke a Shimano Sora rear derailleur last night... Ouch, there goes a load of cash... What had happened was the hanger was bent slightly inwards, yet was functioning fine, so I rode it home. ...
3
votes
0answers
332 views

Help identify this loop frame bike

I'm trying to find out more information about this old loop frame bike I'm planning to refurbish. I haven't found any other marks that may be identifying, if there's anything else I can take a photo ...
3
votes
1answer
174 views

Vinyl Frame wrap

Hi all odd question but here goes. I know there are many options in frame restoration powder coating respraying hydro dipping etc etc but these all cost money I don't have. What I do have is lots of ...
0
votes
1answer
355 views

Panniers on front suspension forks [duplicate]

I currently have four panniers (two front, two rear) on my touring bike and plan to purchase a new touring bike which comes with front suspension forks. Is it possible and if so, safe to add front ...
2
votes
2answers
1k views

What are the advantages (or dis-) of the GT triple triangle frame?

Like this one, for example. Is there any plus or minus to this frame design? (I'm shopping for an 80s/90s steel frame bike and the GTs may be a possibility. It turns out I kinda like a horizontal ...
1
vote
2answers
122 views

Mounting mini-pump on frame

I recently bought a mini-pump from Amazon, it was very cheap and, so-far, I'm pretty impressed with the build quality. I never intended to mount it on the bike but then realised that it came with a ...
4
votes
1answer
1k views

What brand of frame do I have?

Would anyone be able to help identify the make of my bike frame? There's no branding on it and I built it up custom using different parts. I've never been able to find out what the make is and am v. ...
6
votes
2answers
768 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
1k 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
175 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 ...
2
votes
1answer
131 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
1k 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
1k 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
1k 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
4k 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
1k 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
422 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?
0
votes
1answer
143 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
167 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 ...
-5
votes
3answers
3k 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
414 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
661 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
2k 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
144 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
354 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
143 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
99 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
579 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 ...
3
votes
1answer
180 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 ...