Tuned pipe differences 120 4c & 145 Webra 2c

[glenn hatfield]

Tim, good to get your email.

No my Swallow90 did not need tail weight with the OS120 SurpassII. I 
had to mount the battery up front to get the CG forward enough.

The Webra needs a lot more volume in the pipe than an OS120 would 
need.  I am not sure how a OS 120 would do with to big a pipe.

Randy



----- Original Message -----
From: Tim Seyfarth <TJS at mail.global-electronics.com>
Date: Thursday, October 24, 2002 12:58 pm
Subject: RE: Tuned pipe differences 120 4c & 145 Webra 2c

> Glenn,
> 
> How does the swallow perform with the OS120?  I was actually 
> looking at the
> pipe...  not the header. Did you find that the swallow needs tail 
> wweight?I have not mounted the engine yet so am not quite there.
> 
> Thanks
> Tim
> 
> -----Original Message-----
> From: discussion-request at nsrca.org
> [mailto:discussion-request at nsrca.org]On Behalf Of glenn hatfield
> Sent: Thursday, October 24, 2002 7:36 AM
> To: discussion at nsrca.org
> Subject: Re: Tuned pipe differences 120 4c & 145 Webra 2c
> 
> 
> I have both of these engines.  The OS 120 Surpass II that I have 
> has a
> side exhast with threaded port. The Webra is a rear exhast with a bolt
> on header. I see no way that the same header can be used.
> 
> I have my OS120 Surpass II in a Swallow90 also. I am running the stock
> OS muffler for this engine. It is quiet enough. Maybe you should try
> the stock muffler before you spend money on a pipe.
> 
> Randy Hatfield
> AMA 453495
> NSCRA 2422
> 
> 
> 
> ----- Original Message -----
> From: Tim Seyfarth <TJS at mail.global-electronics.com>
> Date: Wednesday, October 23, 2002 10:26 pm
> Subject: Tuned pipe differences 120 4c & 145 Webra 2c
> 
> > I am returning to pattern with a swallow to start powered by an OS
> > 120 4
> > cycle which I already have and want to get a pipe for it.
> > However, my
> > larger plan is to get a Webra 1.45 in the near future for a full 
> blown> 2meter ship.  Being on a bit of a budget I was hoping I 
> could get
> > a pipe
> > that would work on either.Is this possible and does anyone have any
> > recommendations?  I was pondering a Macs for the price...
> >
> > Thanks
> > Tim
> >
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> >
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