What is the significance of knowing the seatpost size?BRLVR.v2 wrote:Remove the seat post and see what size it has stamped on it.
just something that was on my mind tonight
Postby sunho » Tue Oct 09, 2012 1:17 am
What is the significance of knowing the seatpost size?BRLVR.v2 wrote:Remove the seat post and see what size it has stamped on it.
Postby find_bruce » Tue Oct 09, 2012 7:03 am
Steel tubes came in standard external diameters so they would fit standard lugs, so a basic rule of thumb is that the lighter the tube set, the thinner the tube walls & the bigger diameter the seat post.sunho wrote:What is the significance of knowing the seatpost size?
just something that was on my mind tonight
Sheldon Brown wrote:Most steel bicycle frames have tubing of standard outside diameter. Frames made to British or Italian standards will typically have 1 1/8" (28.6 mm) seat tubes. Older French bicycles used 28 mm. Old American style, commonly used on BMX bicycles and other bicycles that use one-piece-cranks, uses a 1" seat tube. Standard outside diameter accommodates standard lugs and clamp-on parts such as front derailers, pulleys and other cable guides, pump pegs, etc.
High-performance bicycles are made of thinner-walled tubing, so the hole will be larger if the outside diameter is kept the same.
As a result, a larger seatpost size is often a sign of a higher-quality bicycle. This has resulted in a de facto standard of 27.2mm for high-quality bicycles that have 1 1/8" O.D. seat tubes. Since high-quality seatposts are widely available in 27.2, most high-end aluminum and carbon fiber road bicycles also use 27.2.
Postby sunho » Tue Oct 09, 2012 8:44 am
Postby grantw » Tue Oct 09, 2012 10:53 am
Postby sunho » Tue Oct 09, 2012 11:32 am
i believe it is reinforced but i would need to double check.grantw wrote:Is that cable slot on the TT just a hole, or is it reinforced? Normally you see some form of reinforcement around penetrations into the tubing. It prevents the tube from cracking around the hole.
Postby sunho » Wed Oct 10, 2012 12:38 pm
Postby munga » Wed Oct 10, 2012 7:40 pm
Postby sunho » Wed Oct 10, 2012 10:18 pm
Postby sunho » Thu Oct 11, 2012 1:00 am
Postby Dan » Thu Oct 11, 2012 9:23 am
David,sunho wrote:I'm looking for a groupset and atm I can see the Veloce is well priced on bike24.
Unfortunate it isnt a compact gearing
Postby sunho » Thu Oct 11, 2012 11:19 am
Postby munga » Thu Oct 11, 2012 6:37 pm
Postby rkelsen » Thu Oct 11, 2012 9:11 pm
Postby sunho » Thu Oct 11, 2012 9:46 pm
Postby rkelsen » Thu Oct 11, 2012 10:06 pm
Certain frame manufacturers used to only braze on a r/h downtube boss on some models. These clips were designed to allow a 5 speed bike to be easily converted to 10 speed.sunho wrote:Yeah, I like the Huret.
Nope.sunho wrote:My problem is I have this unquenchable bikelust at the moment. Is it just me?
Postby sunho » Fri Oct 12, 2012 1:02 am
I'm still deliberating and weighing up the pros and cons of doing:rkelsen wrote:Personally, I'd just run a single chainring and avoid the hassle.
Postby grantw » Fri Oct 12, 2012 6:45 am
Postby rkelsen » Fri Oct 12, 2012 11:34 am
Postby elantra » Fri Oct 12, 2012 12:52 pm
Go the single chainring !sunho wrote:I'm still deliberating and weighing up the pros and cons of doing:rkelsen wrote:Personally, I'd just run a single chainring and avoid the hassle.
1. 2x10 speed crankset - nice veloce
Pros:
* can trade up frames and swap groupset onto it.
Cons:
* Have to braze on boss end or buy that clamp but I will need to check the width of the downtube.
* More time involved
2. Single Chain Ring
Pro:
* Easier to do
Con:
* What to source (groupset and config chainring, cassette size etc)
* What budget
Obviously a lot more that I need to think about...
Postby sunho » Sat Oct 13, 2012 12:29 am
Postby munga » Sat Oct 13, 2012 7:53 am
Postby sunho » Sat Oct 13, 2012 4:24 pm
Yeah I know definitely could. But maybe that one sided boss clamp adapter may be alright. Brazing onto a frame, can I go to any brazer/welder for that?munga wrote:..for all the effort you're going through, a braze-on will be worthwhile i reckon, especially if you decide to sell it.
why would anyone buy a nicely built, freshly painted bike that can only run a single chainring? you might find a buyer, but it's going to be a small demographic that isn't turned off by it.
Postby Crowz » Sat Oct 13, 2012 5:41 pm
You may not be saying that when it's time for the bigger and better project #2!sunho wrote:I don't mind not selling the bike first project, deserves a place on the wall!
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