Questions tagged [frames]
Bicycle frame construction, selection, maintenance, and repair.
910
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What kind of Dyno bmx I have [closed]
I have a Dyno bmx and I am trying to figure out the year and make this is the serial number wya9h0376 the other four numbers are 5099
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What kind of frame do i have [closed]
I have a dyno frame and would like to rebuild it and need to find out what kind it is. Can anyone help me? Seriel #SOET19428
4
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1
answer
187
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Aluminium frame alterations
I know it is possible to make almost any type of frame alteration to a steel frame. But what about aluminium?
I would like to know if anyone has a first-hand experience in adding braze-ons, and doing ...
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1
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142
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Tiny dent near the bottom bracket of a new hardtail - should I be concerned?
I’ve just purchased a new Trek Roscoe 7 (aluminum hardtail mountain bike) recently and I’ve noticed this tiny little dent today. It is on the drive-side chainstay near the bottom bracket.
Should I ...
0
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1
answer
49
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What do these specs mean? I have a Cannondale Road Bike 700x23c
I've been trying to find the model of my bike but I can't even find the year.
700x23c
175
EPE 45% PU 55%
T 430
700
23-622
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0
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15
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Help me decode Haro Vector serial number please
Recently acquired a Haro Vector mountain bike. Serial number V2K506004 anyone please help me decode this?
6
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2
answers
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Small dents on bicycle frame
Two weeks ago I bought Trek Checkpoint ALR5. Bike rides pretty well. It has aluminium frame. I bought it primarily for bike packing trips as it has ton of mounting points.
After riding it for 2 weeks ...
4
votes
1
answer
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Stainless steel ladies bike frame failure?
i am new to this group and this is my first post. My Japanese Miyata ladies bike had this problem for so long time. The down tube had come out for about 3mm from its connecter. It looks like there ...
1
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1
answer
73
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How to adapt a tube-mounted clamped accessory for a larger diameter tube?
I bought an Abus bike lock which came with a tube mount called the Abus EaZy KF.
The issue is that this mount only supports up to 36 mm diameter tube but the smallest tube on my bicycle is 38 mm. I ...
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3
votes
2
answers
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Carbon Damage on bridge, repair possible? If so, what steps are needed?
This is a follow up question to:
Attachmentpoint rim brakes carbon bike, sratches/crack?
So. My bridge on my x lite 4 seems to be delaminating. Unfortunately Rose does not want to honor their six year ...
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17
votes
5
answers
2k
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Which frame material is the most sustainable?
I would like to buy a new road bike. However, I also want to make sure which material is the most sustainable. On the one hand in production and on the other hand in disposal.
I had already asked a ...
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3
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1
answer
159
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Is the carbon frame disposal problematic
I heard from someone that carbon is difficult to dispose of. Does anyone know how
to dispose of carbon frames?
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31
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Help identifying bike model
Does anyone recognise this model?
I know that it’s an Elios bike, but it’s pretty old and I couldn’t find any matches when googling.
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1
answer
102
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I don't understand why these bikes have the specific frame sizes
Why does huffy's Rock Creek mountain bike have the same size frame for the 26-in and the 24-in but the 29-in version has a huge frame like a 26-in mountain bike should not have the same size frame as ...
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5
votes
1
answer
835
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Identify unusual thin bicycle frame
What is the generic name and/or specific products associated with the illustrated frame? Is it lighter than a normal frame?
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2
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107
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What color can I spray on top my green bike?
I want to do this without having to remove/strip having to strip paint from the frame which is already flaking off slowly.
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2
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2
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Is there an issue with this seatstay? photo
is this seat stay normal or is there a dent / damage here?
Hard to tell it's near the welding but the other side does not have this.
From https://imgur.com/a/xUtmeKN
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3
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4
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Were titanium road bikes ridden in the Tour de France?
I know that steel and aluminium frames were ridden in the Tour.
I wonder if there was a time when titanium frames were ridden in the Tour de France.
was ridden. I haven't found anything about this on ...
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What's bike do I have
I can't find what kind of bike I have and I can't find the logo anywhere on the internet I've googled image and it's not on there please help me and tell me what I have thank you
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2
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Do carbon MTB frames crack easily?
I have been looking to buy a new full sus mtb (Vitus sommet 29 Cr) and saw that the main frame is carbon fibre with the rear triangle being aluminium. I love the bikes specs and aesthetics but can't ...
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0
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0
answers
77
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Help identifying frame brand/model
My friend gave me this frame and the old paint job was covered with spray paint so I decided to paint, strip and run it raw.
I need help with identifying the frame. The pictures provided show the ...
4
votes
1
answer
122
views
Butted tubing - lighter but is it more fragile (child seat)
Looking to build a daily on a steel frame, tempted to go for a higher end (Marin, Kona, some Raleigh) but I am wondering if the double or triple butted tubes are more fragile ?
For example if you put ...
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13
votes
3
answers
2k
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Why do most full suspension MTBs have a kink in the down tube?
Back in the time... bikes did not have (rear) suspension and the most common frame design was the "diamond frame", with straight pipes. Today, mostly in full suspension bikes, there is ...
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2
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0
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101
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Identifying this road bike brand
Can someone help me identify this frame? It was given to me in Switzerland. My uncle and cousin bought it already painted grey. I noticed an engraved logo in the dropout, but it does not look like it ...
10
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1
answer
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Why aren't derailleur hangers made into standard shapes?
That small piece of metal can render a bike unrideable, and sometimes a repacement is impossible to find.
There are standards for headsets, bottom brackets, brake mounting points, OLD and dropouts, ...
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4
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710
views
BB drop vs BB height from stability perspective
While I have heard that a lower bottom bracket tends to give more stability, I'm confused as from which point of reference yields such an effect, from the wheel axle (BB drop) or from the tire contact ...
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13
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2
answers
3k
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Rear wheels are dished. Why not "dish" the frame instead?
Most rear wheels are dished to make room for the cassette. They have the drive side spokes comming into the hub more perpendicularly, which weakens the wheel against lateral forces in that direction. ...
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6
votes
1
answer
155
views
What is the advantage on road bikes where the seat stay merges into the upper part of the seat tube, but well below the top tube
For a few years now, you see more and more road bike manufacturers building this new frame shape. What is the advantage of this geometry?
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9
votes
4
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2k
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Is there a reason why it was said that the distance between the seat tube and the rear wheel should be as small as possible on a road bike?
I recently saw a steel road bike in a road bike shop where the distance was well over 1cm. 99.9% of old road bikes had a very small distance (~5mm). At the time, they thought it was more aerodynamic. ...
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1
vote
1
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Is this defect on 2022 Trek FX 2 frame?
I got new 2022 Trek FX 2 couple of days ago. But I noticed something on the end of the left chain stay. Are these defect and should I worry about it? Also I asked this to the local retail where I ...
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2
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1
answer
116
views
Help identifying bike make and model
Can anyone help me please in identifying my racing bike frame make and model?
I can’t find any serial numbers or markings on the frame and I am not even sure whether it is in fact a Gios Torino frame ...
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2
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1
answer
78
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Bent Reynolds 531 Simplex stays at dropouts
I have just bought a Reynolds 531 Simplex bike frame and noticed the left chainstay and right seatstay look slightly bent at the dropouts. The right dropout appears to be incompletely inserted into ...
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0
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0
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23
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Getting information from a 15 Giant Avail Adv 1 Serial Number
My bike was totaled. I have the serial number from the original receipt. Can I find out the frame size of the bike with the serial number?
13
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5
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3k
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Can I trust my bike’s frame after I was hit by a car if there's no visible cracking?
I was waiting at a red light and the person behind me hit me. Her car ran over my rear wheel crushing it and over my frame. I have checked the frame were there are indications of her car but do not ...
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Is it possible to repair a dent on an aluminum frame using carbon fiber?
Every dent is unique so I think it is ok to ask this question once more.
I have a Stevens Superflight 2020 which has a dent on a frame:
My plan is to create some carbon fiber sleeve around the dent, ...
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2
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3
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140
views
Do inner-routed cables have segments without a housing?
Bowden cables (whether for shifting or for brakes) running outside a
frame save a little weight and expense by using the frame for
compression in lieu of the housing in long stretches along the
frame—...
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7
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2
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711
views
Can I mount a rack on eyelets that aren't horizontal?
The eyelets at the lower end of my frame's seatstays are not aligned with the dropouts (to allow attachment of a vertical rack strut). The misalignment is around 13°.
Two questions:
What options do I ...
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Can someone tell me what kind of bicycle this is? Also, how much would it be worth?
Can someone tell me the make, model, and value of this bicycle?
The logo on the front says IMPERIAL in white across a gold (or silver?) band over a black circle with four gold crowns in an arch across ...
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3
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2
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Good idea to arbitrage this frame?
I came across a FB marketplace listing where the seller is having a quick sale of an alleged carbon fiber Opus Andante frame due to a move. He supposedly live in a wealthy area of town, originally ...
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2
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1
answer
44
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Front derailleur clamp/hanger for Rivendell frame
I am building a bike with a Rivendell custom frameset. The seat tube size is 29.7mm. I am mounting a Dura-Ace FD-R9150 front derailleur that is braze-on.
I'm looking for an adapter clamp but the ...
4
votes
3
answers
290
views
Carbon damage to frame after sideway fall
Today, I went out for a ride and had a small crash. I fell down sideways, then came home and realized there’s a small paint chip (which i’m fine with it) but there’s a small dot which is the deeper ...
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0
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1
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90
views
Help identify this very old bike frame
Few days ago I got as a present one very old bike frame which was almost completely stripped of paint few years ago and slight rust got on it on the surface. Only fork was in it’s original color, it ...
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1
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71
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YEAR/MODEL Technique BMX frame
I own this Technique BMX frame and need help determining which frame i own. Serial number is M12903.
serial number underneath right rear fork
2
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1
answer
352
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Are dropout adjustment screws necessary on an indoor trainer?
I have a 2007(?) Cervelo P2C with horizontal rear dropouts, and I noticed recently that one of the dropout adjustment screws had bent. I plan to replace it, but until I do so is there any issue with ...
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What small parts should I be mindful of when buying a frameset?
I have a project of building a touring bike from scratch by cherry picking every component. I started looking at some potential framesets.
One of the candidates is the Surly Disc Trucker. I can see on ...
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5
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3
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484
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How long should an aluminium frame last?
This question has been asked before, and there have been several answers to it - including links to interesting articles and scientific analyses. The general consensus appears to be 5-10 years, ...
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7
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2
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393
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Aside from brakes, what items can be mounted to v-brake mounts?
I have a bicycle frame with mounts for both disc brakes and conventional brakes. I'm curious to know what other accessories I can attach to the conventional brake mounts if I decide to use disc brakes ...
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71
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Magnitude of load and cycles needed during testing of bike forks
I want to do a structural test on bicycle forks. Is there any specific criteria I need to follow of what should be the magnitude of the significant load and also how many cycles would need to be ...
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1
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351
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Surly Straggler vs. other types of steel frames
Long story short, the frame of my current bike got busted and it is essentially a write-off now.
As I'm shopping for a new bike, the Surly Straggler came to mind again.
Here are the specs for the ...
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2
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1
answer
178
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MTB rear triangle specs for given frame / e-bike build
A used 27.5 19" e-bike frame (Bosch motor+battery model) (only front half) is advertised under the brand "Kilimanjaro e-tec 2.0", whatever.
Its rear triangle, however, is missing and I ...
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