Kelly,
Good idea there. Some of these folks DO have the means and equipment
to test two pipes on an identical bike. As we say around the plant, "In God
we trust, all others bring data."
In the meantime I've forwarded the thread to my college thermo professor.
It will be enlightnening to hear his thoughts.
Regards,
Kevin
____________________Reply Separator____________________
Subject: Re: Insulated Exhaust Systems
Author: "Kelly Cash" <SMTP:[EMAIL PROTECTED]>
Date: 3/30/00 1:20 PM
>...Don't get me wrong, I think coated pipes are preferable to
> chrome ones due to the frictional argument mentioned earlier,
> and increased corrosion resistance. I just think the scavenge
> due to heat retention argument doesn't make any sense.
Well, I'm not a flow engineer. I was basically quoting
the info from the coating companies. But I've got some experience
with auto/bike mechanics, and how they explain it seems plausible
to me. I also know that some back pressure is GOOD. If I'm
reading your posts correctly you're saying that the more you
reduce back pressure, the better it'll run. Not so. (which is
evidenced by the fact that the 18" can on a Hindle slightly
outperforms the 16" can)
I don't want to turn this into a huge debate (although I'll read
everything written). I haven't done a side-by side comparision
dyno test between an uncoated and a coated pipe on the same bike.
Might be an idea, if anyone has the means to do so. I do know
that the Airborn and JetHot people claim about a 1.5 horsepower
gain after coating the pipes. Considering what we saw in Laughlin
at the dynos, I wouldn't argue with it.
Back to the sidelines,
-K
======================================================================
Kelly Cash Main: 408-727-5497
Solid Data Systems FAX: 408-727-5496
2945 Oakmead Village Court [EMAIL PROTECTED]
Santa Clara, CA 95051 www.soliddata.com
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