2 Cycle Setup on a Pipe

[Brian Young]

Exhaust timing is different, so I pipe lenght should
be different.

1.45 timing is about 147, 1.60 timing is about 140.

What is the affect of reducing the exhaust timing on
the 2-stroke?

--- randy10926 at comcast.net wrote:
> Is the pipe length for the Webra 160 the same as for
> the Webra 145?
> 
> Randy
> > 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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