Charles,
I don't have a Metzler Lazer and don't recall seeing them publish
their diameters like some other manufacturers, (of course it must be
somewhere and I just haven't found it). I would like to offer a
solution to compute this measurement though that might even provide a
more accurate result with the SPA.
Published diameters will vary of course depending on wheel width,
inflation pressures etc .. and the "rolling" diameter, (with you on
the bike), is really needed for the most accurate computation of
revolutions per mile etc ........ What I have done in the past to get
as close as possible is to mark a white stripe w/ a piece of chalk or
something ... at the lowest point of the sidewall at the ground. Make
a mark on the ground at the same point. Then while sitting on the bike
.. roll it forward until the mark on the sidewall makes one
revolution. Mark the ground again and measure the distance between the
two marks. This gives you the rolling circumference and if you divide
it by 3.14 or whatever PI is these days you will get the rolling
diameter.
Hope this is of some value to you .... not a biggie to do ..........
Enjoy your vacation ....
campbell
----- Original Message -----
From: <[EMAIL PROTECTED]>
Subject: Re: carb_sync and other
> snip <
> PS. does anybody know the exact diameter in m.m. of a standard
> front wheel with the laser metzeler tyre, I have to introduce the
right
> figure so I get the right speed reading on my SPA rev/speedo unit.
> Regards, Charles ( [EMAIL PROTECTED] )
.............................................
To unsubscribe go to http://www.sayegh.org/unsubscribe.htm
.............................................
