[python] Re: Evolution Bike
- From: Uipko Berghuis <uipko.berghuis@xxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Thu, 17 Feb 2011 09:39:14 +0100
On Thu, Feb 17, 2011 at 4:16 AM, Vi Vuong <vi_vuong@xxxxxxxxx> wrote:
> Hi All,
> What do you think about a direct drive python? I have a recycled 16in Razor
> Scream Machine that I may want to make a compact folding python, bike/trike
> that would fit in the trunk ~2x1.5x3ft
A direct drive with a small wheel means low speed or (extreem) high
cadans (English term?).
16" = 0.4064 m, cadans = 90
(diameter*cadans/second) => m/s
(((0.4064*pi)*90/60))*3.6 = 6.89 km/h
If you train on high cadans you will be able to reach, I guess, 120
max for a longer period, this will give you a speed of
(((0.4064*pi)*120)/60)*3.6 = 9.19 km/h
Please correct me if I'm wrong, it's a while a go doing math ;)
Uipko
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