----- Forwarded Message ----
From: Brian Dutton <
duttonbrian2@...>
To:
bike-engined-cars@...
Sent: Thursday, 19 February, 2009 23:47:16
Subject: Re: [bike-engined-cars] Looking to build bike powered car.
Have a look at the www.westgarage.co.uk website under chain drive, looks easy to replicate.
Brian
________________________________
From: Mike Lackey <
mike_lackey@...>
To:
bike-engined-cars@...
Sent: Thursday, 19 February, 2009 22:03:20
Subject: Re: [bike-engined-cars] Looking to build bike powered car.
A few aero tricks are allowed (air dam, removal of mirrors, wheel covers) so my final Cd is an unknown, but your estimates aren't far off. Tire pressures are typically higher than 30psi to decrease rolling resistance and reduce failure from overheating; I'll probably run about 45-50psi.
I've got a 2001 Yamaha YZF R1 engine. It formerly resided in a race bike built by a local engine builder, the builder estimated 150 rwhp in the bike.
Mike
You wrote:
To achieve 130mph on a hard surface and tyres at 30psi assuming a Cd of 0.31 and a frontal area of 24.5ft squared. Your engine will have to produce 123hp, on salt you will have greater rolling resistance, so your hp requirements will be greater. To achieve 150mph a figure of 180hp, plus the losses from the softer surface is required.
What is your chosen engine?
Brian
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