Sunday, October 19, 2008

Low racer II



After completing the first lowracer (white and REd- I am not talking about wine here!), it was obvious that a few modification were required before going into production.
A second prototype has been built with a slightly different lay-up of carbon fibre. The weight went up by 300g and the bike has a totaly different behaviour on the road.
The second frame has been built with STIFFNESS in mind and I must admit that we did not miss our target but riding confort is reduced.
As our supplier can only supply 451 carbon fork, we redesigned the frame to accomodate a larger wheel. For racing, we still wanted to use a 406 front wheel so we decided to use an adjustable fork angle to find the perfect angle that would suit the two wheel size.
After a couple of test, it appears to be very sensible but a few cables were missing on my handle so I can't make any final conclusion just yet.

I know for sure that the frame is stiff in bending and torsion, light, stable in the curves and the position is somewhere between a Baron and a VK2 when we use the 451 front wheel. It should be closer to the Baron with the 406 front wheel.

2 Comments:

Anonymous Anonymous said...

Why do you want to use 406 for racing? Isn't the 451 better for both?

9:01 PM  
Blogger Speedy said...

The 406 front wheel lowers the bike and allows the small riders to use a lowracer racer. The 451 front wheel should have a lower rolling resistance on bad roads but I have not noticed any real difference when they have the same pressure.

6:40 PM  

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