TC,
Is that 12.47 a static measurement? Does it include the rider? Is tire rise
at high speed ever significant enough to be a factor? I've always wondered
about this but never bothered to ask before. Would radial tires be measured
differently?
-----Original Message-----
From: TC [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 15, 2000 8:36 PM
To: V-MAX TECH LIST
Subject: Re: Rpm at 70
Eric,
The rolling radius is the distance from the center of the axle to the
ground with the bike sitting on the ground. 12.47 is the advertised
rolling radius of a Dunlop Qualifier K525 ... If you want to talk
distance per wheel revolution I'll take that too .. for the 12.47
rolling radius stock tire that would be 6.53 feet. I can't guess at
the rolling radius of the 18 inch tire .. but I could compute it if I
knew the gearing. I have to have one or the other.
campbell
----- Original Message -----
From: "Eric Harnish" <[EMAIL PROTECTED]>
Subject: Re: Rpm at 70
> TC what is a rolling radius of 12.47 inches ?
> My tire is a little over
> 6 feet .
>
> TC wrote:
> >
> > Phil,
> > I get approximately 4450 RPM in 5th at 70 mph for a "stock" Vmax
...
> > this would be a "stock" Vmax with a 12.47 inch rolling radius
tire. If
> > your 18 inch tire had a 12.47 inch rolling radius it would be the
> > same. I need either your rollling radius or the number of teeth on
> > your front and rear sprocket, (assuming your primary drive and
> > transmission gears are stock), to compute the rolling radius
before I
> > could tell you what your 18 inch tire would do on a stock
driveshaft
> > bike.
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