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Old 05-15-11 | 10:20 PM
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carleton
Elitist
 
Joined: Jul 2005
Posts: 15,966
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From: Atlanta, GA
Originally Posted by kaos_jo
Im having a custom titanium track frame built for me (partly to be tricky, partly because i cant find a quality frame around 2-3k aud, they are all either 1k alloy or 7k carbon)
What? There are several aluminum bikes that are superior to Titanium for less than $2000.

Quality carbon fiber bikes can be owned for less than 2,000 AUD and CERTAINLY less than 7,000AUD. You are being dramatic.

Aluminum and carbon fiber frames are present on the elite and world levels. Except for the odd one here and there, titanium frames are absent on the elite and world levels.

Originally Posted by kaos_jo
So i am investigating what is going to build up the best for me, and through my investigating i have discovered that there isnt really a hard and fast rule for track geometries, just what works best for you and your track and the racing style you do.

Im fairly new to racing, and i have only had one track bike, which was a 545mm square traditional madison steel track frame. Its great and stiff, but a little on the heavy side. I also felt as though it never stretched me out enough, and i wasnt wiling to go for a longer stem and compromise handling.
There is your problem, right there

A custom titanium bike as your 2nd bike ever isn't the answer.

Originally Posted by kaos_jo
there is a school of thought that suggested you should have your track geometry as close, if not the same, as your road geometry. As you spend more time on your road bike, its better for your muscle memory and training to not have a large difference between the two.

So with this in mind i have come up with these geometries. It is aero down tube, and seat tube with a cut away for the wheel.
- 550mm centre to centre top tube
- 130mm top to bottom head tube
- 73degree seat tube and head angle
- 52mm centre axle to centre bb drop
the chainstays have yet to be determined, as it will depend on the width of the seattube and its cutaway in relation to my wheel, and i will calculate this when i have decided upon the other geometries.

I run a 170mm crank, and the track that i ride on has a 42degree banking.

So what do you guys think? i willing to listen to anyones views on what they think about this set up.

Also i am curious about what fork i will need to run, if anyone has suggestions to this?

Jo


Why do you think your custom titanium bike will be better than any off-the-shelf bike that is immediately available? What problem will custom solve for you? What problem will titanium (as opposed to aluminum) solve for you?




If the answer is, "Because I want it", then that's fine. But, let's be clear about that up front.
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