Questions tagged [frames]

Bicycle frame construction, selection, maintenance, and repair.

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1
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0answers
111 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 ...
9
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6answers
2k 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 ...
8
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0answers
52 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?
1
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2answers
89 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 ...
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0answers
60 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.
5
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2answers
140 views

Chain rubs against frame when in smallest rear cog

I've set up a 12-speed SRAM Force groupset with an XDR cassette. When in the smallest rear cog, the chain rubs against the frame: Does anyone know what causes this and how to fix it? The frame is a ...
0
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1answer
22 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
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0answers
37 views

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

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 ...
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0answers
66 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 ...
6
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3answers
153 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
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0answers
72 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 ...
3
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2answers
71 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 ...
5
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0answers
70 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 ...
0
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1answer
70 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
56 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
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6answers
5k 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
118 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
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1answer
150 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. ...
1
vote
1answer
107 views

Can anyone help me identify this bicycle frame?

I recently bought this frame from a gentleman who bought a closed bike shop and builds and sells bikes from his 10 or more sheds full of parts. He teaches his church youth kids to build them as a way ...
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1answer
76 views

Santa Cruz but idk which model and year, please!

Hey can someone please tell me the model and year of this Santa Cruz frame I just bought... thanks!
3
votes
3answers
159 views

Correct frame size, will 56 and 58cm work?

I'm new to bicycling (I have a 7 speed HEAVY beach cruiser I use for 10-20 mile rides). I am looking into used road bikes now. I checked several places to measure what size frame I should get for a ...
3
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0answers
113 views

Help Me Identify My Uncle's Old Elevated Chainstay Bike

Please help me identify my uncle's old bike. I will greatly apppreciate all of you that willing to help mi. Thanks to all in advance who help!
2
votes
1answer
77 views

my first frame jig - a customized one - which addons and features to add?

i am currently workin on the Bicycle-Frame-Building-Jig that is designed by tanner W at Instructables https://www.instructables.com/id/Bicycle-Frame-Building-Jig/ which bottom bracket assemblies ...
7
votes
3answers
2k views

Broken rear brake - told it was unfixable

I have an older model Trek mountain bike. I took it to the shop for an annual tuneup and they called me to say that the rear brake broke off the frame and that it can't be fixed. The entire brake is ...
3
votes
2answers
44 views

Rockshox Pike Scratch

I have a rockshox pike with scratches on the fork stanchion. I would like to know if there was anything I can do without buying a new one. Any suggestions would be greatly appreciated! Here is a ...
2
votes
2answers
206 views

Can someone help me identify this bike frame?

I just scored this bike out of a storage unit auction. I've seen very similar frames like it before. I own a Transition Sentinel myself and my guess is that this is a Transition Scout but it has a few ...
1
vote
0answers
73 views

Help identify a frame

could someone help me identify a mountain bike frame, the rear triangle of the frame has square tubing, it's a late 90s early 00s frame.
1
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2answers
132 views

Are rear triangles made today made of thinner / less substantial materials than in the past?

I read this question posted by someone else (details below) but without any response: One thing I've noticed about newer bikes vs bikes like this [referring to a Specialized Hardrock aluminum frame ...
5
votes
1answer
69 views

Hollowtech II BB alternative for stripped frame threads [duplicate]

I removed the BB (Shimano BB-93) from my Canondale Trail and found the drive side thread is stripped on BB and frame. See and What are the options for me to replace the BB? Is there an alternative ...
2
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0answers
22 views

Options to fix a stripped driveside BB thread- Shimano BB-93 [duplicate]

I removed the BB (Shimano BB-93) from my Canondale Trail and found the drive side thread is stripped on BB and frame. See and What are the options for me to replace the BB? Is there an alternative ...
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1answer
75 views

Can anyone help identify this stamp please

Need help to identify this bike please
1
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0answers
156 views

Help me identify bike frame. Repainted, but have serial number

I got this bike second hand, accordingly to the previous owner it should be a rocky mountain. He said that he repainted the bike and created new stickers for it. I couldn't find a similar rocky ...
1
vote
1answer
72 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, ...
0
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1answer
79 views

Can anyone tell me what make or brand this frame is? [duplicate]

I can't figure out who made this or what brand maker it is. It has the serial number and on top of it it has a different number. G0Q230-2 Wbdo26l0431p
0
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5answers
198 views

Why are bicycles triangulated at the back but not at the front?

I know that triangulation of structures makes them stiff. Why are bicycles stiff at the back but not at the front?
5
votes
2answers
239 views

How can I repair carbon damage near my bottom bracket?

I have had a few gnarly chain-drops that ate at my Open U.P. carbon frame. I thought I just had some chips in the carbon, but today I removed my crank for a full bike clean and realized that the ...
3
votes
0answers
97 views

Void in carbon frame seat tube, is it dangerous?

While assembling a carbon bike, I found this void in its seat tube. It's about 1/2 inch X 1/4 inch in size and I'm guessing almost a third to half the depth of the tube wall. Since it's right next ...
-1
votes
2answers
129 views

I need to find out what type of bike I have I just got it

I need to find out what type of bike I have I just got it
1
vote
3answers
757 views

Can anyone help me with identify this Giant bike?

I need a name for this bike so I can look into it. It's going to be sold to me but I don’t want to get ripped off. Thanks!
4
votes
1answer
81 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 ...
4
votes
2answers
151 views

Why can compact frame in road bikes be made in less sizes than the traditional frame?

When I read about Giant, they talked about how in the past road bikes have to be in like 10 incremental sizes, but Giant had an idea from a mountain bike (which usually only have S M L sizes) to make ...
2
votes
1answer
44 views

Back wheel rubs against the back brake pad when riding

My aging 26" Nishiki 10 speed is still a great bike and ride and well maintained. 25yr warranty ended in 2009. I am 6'7" and 280lbs now and was 250lbs when I purchased it. For some strange reason now ...
2
votes
2answers
326 views

Can anyone tell me the specific year and model of this Benotto bike?

I’m inexperienced and just wanted to work on refurbishing this as a side project but thought that knowing what I was working on was a good place to start. Only other identifying factors are a ...
1
vote
1answer
1k views

What size adult tricycle? [closed]

I am 5 foot tall (152 cm) and have a 25 inch (63.5 cm) inseam. I am unsure as to which size of wheel/frame to buy. Also, recommendations for adult trikes, no more than $400 would be appreciated.
2
votes
1answer
64 views

Help identify antique rear steer tandem bike

I'm trying to identify an antique tandem bike. I have looked at over 6000 of them on the internet with no luck. Many are similar, but this one has some unique items. Not the top rail, it stops at ...
4
votes
0answers
103 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:
2
votes
3answers
85 views

What width between dropouts is suitable for a hub of Xmm?

For a hub of 120mm, what would the dropout spacing be on a typical frame? Or for 130mm, or other sizes - in each case, how close to the hub width should one expect the frame spacing to be?
2
votes
1answer
254 views

I need help with identifying my 26" cruiser, no ID markings, I built it 25 years ago and could be 15+ years older than that.. TIA

Bottom bracket and rear brake (click for larger): Bike frame and chainring (click for larger): head tube (click for larger):
2
votes
2answers
186 views

What 1990's bike have I bought?

I've not had a road bike since I was about 16 which is too many years ago to want to remember so forgive my ignorance. I can remember that Cannondale were said to be good back in the day so I've ...
0
votes
0answers
78 views

HELP!! What is this bike frame?

Hello all, I've won this triathlon frame on Ebay for £150 but have yet to pay. Apparently Vision have never made frames and deal only in components (according to their customer service). Is this some ...

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