[NSRCA-discussion] Need help setting up pipe

[Jerry Budd]

Hi Bill,

Set it up for 24" from the baffle to the glow plug (IIRC the baffle 
is 13.5" back from the front of the pipe).  That length gives a nice 
amount of boost without being peaky whether you run 15% nitro or 
Magnum #1.  With an APC 17x12 you should see ~8200 rpm +/- 200 rpm 
depending on what nitro and whose fuel you choose.  Be aware that if 
the motor is new the idle won't be too great until you get >15 or 20 
flights on it.  The top end numbers won't come into their own until 
about then either.  The sleeve on the Webra's is really hard and it 
takes 20+ flights for it to really "settle in" and then it just gets 
better and better.

Just my $0.02 (not that I'd know anything about Webra's...)

Jerry

>I am trying to set up a Webra 145 AAR running a Johnson 2 1/4 rise 
>header and a ES D2C160L9 pipe and was wondering if anyone could help 
>with a length to the baffle.
>Any help would be appreciated.
>
>Bill Mitchell
>
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-- 
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Jerry Budd
Budd Engineering
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