2 Cycle Setup on a Pipe

[Lance Van Nostrand]

Ditch the MC carb during testing and put a regular 1.45 carb on it.  The
bench mount it.  I have been testing AeroSlave carbon pipes for a year now
and have a great setup for quickly getting tuning length and rpms.  I have a
"trombone" made from two pieces of silicon coupler with a short length of
aluminum header pipe in between. By starting with everything extended to the
extremes and sliding the whole mess together I can watch a tach and take
readings real time.  Takes about 5 min to get the numbers and then setup the
flying lengths.
--Lance

----- Original Message ----- 
From: "Brian Young" <b4598070 at yahoo.com>
To: <discussion at nsrca.org>
Sent: Monday, March 29, 2004 3:16 PM
Subject: 2 Cycle Setup on a Pipe


> I have recently been tuning on my exhaust and have a
> basic understanding but want some more information.
>
> I have a Webra 1.60 w/ MC carb and a Webra pipe w/ a
> disk baffle.
>
> Im gradually shortening this pipe setup hoping to hit
> the correct length. The problem I find with this setup
> is the MC carb doesnt lend itself to a test stand
> since the mixture is servo controlled. So I shorten
> pipe and fly, shorten and fly.
>
> The thing Im most curious about is if you had a setup
> no one else has how do you determine a close first
> guess for the pipe length if you want to cut down the
> trial and error? I had a starting point but was just
> puzzling over this.
>
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