Webra 145 with Greve Pipe

[Jerry Budd]

Hi Mike,

That would make the measurement pipe dependent, whereas knowing the 
baffle location allows for comparisons between different pipes.

For example, if you compare the ES-2C140L90 pipe I'm running with the 
ES-2C140S90 you'd find that the baffle is located the same distance 
from the front of the pipe (13.5"), however the ES-2C140L90 is 3.5" 
longer in overall length.  The muffled section behind the baffle on 
the ES-2C140L90 makes up the difference.

The Greve pipe that Piedmont sells has the baffle 5" or 6" further 
back than the ES-2C140L90 which is why it's installed pipe length is 
so much shorter.

Thx, Jerry


>Thanks Jerry. Why do people do this rather than just take the measurment
>from the end of the pipe? Thanks Mike
>
>-----Original Message-----
>From: Jerry Budd [mailto:jbudd at QNET.COM]
>Sent: Wednesday, June 18, 2003 7:14 AM
>To: discussion at nsrca.org
>Subject: RE: Webra 145 with Greve Pipe
>
>
>Hi Mike
>
>Stick a small dowel down the inlet of the pipe until you hit the
>baffle, make a mark on the dowel coincident with the front of the
>pipe, remove the dowel and measure the distance on the dowel from the
>end to the mark.
>
>Jerry
>
>
>>   How do you determine where the baffle is on the Greves pipe? Mike
>>
>>-----Original Message-----
>>From: Keith Black [mailto:tkeithb at attbi.com]
>>Sent: Tuesday, June 17, 2003 11:39 PM
>>To: discussion at nsrca.org
>>Subject: Re: Webra 145 with Greve Pipe
>>
>>
>>As long as we're talking about the Webra 1.45, RPMs and pipe length, what
>>are some experiences with the Webra 1.45 and the Greve pipe. Piedmont's web
>>site it recommends 27.5" to the first baffle, but recently Lee Davis posted
>>that he has his set at 28.5" to the first baffle.
>>
>>Mine's actually running pretty well at 27.5", I'm just wondering if I can
>>improve it by moving it back an inch.
>>
>>Lee, if you read this, why did you move yours out another inch over what
>>your web site recommends? What did this improve (top end, mid range, etc.)?
>>
>>Does anyone else have experiences to share with this combination?
>>
>>Thanks,
>>Keith Black
>>
>>----- Original Message -----
>>From: "Jerry Budd" <jbudd at QNET.COM>
>>To: <discussion at nsrca.org>
>>Sent: Wednesday, June 18, 2003 12:00 AM
>>Subject: Re: Webra 145
>>
>>
>>>   >Let's try again - what rpm are you guys getting with what props with
>the
>>>   >Webra 145?  I'm trying to tune mine with a Bolly pipe and have no idea
>>what
>>>   >to look for.  I'm trying both a 17X10 and 17X12N prop.
>>>   >
>>>   >Thanks for any suggestions.
>>>
>>>   82-8300 rpm when new, 85-8600 rpm after ~30 flights.
>>>
>  >>  Magnum #1, OS-F or YS plug, ES-2C140L90 pipe set at 23-1/4" baffle to
>>>   plug, stock Mac's 2-1/4" rise header, and an APC 17x12 prop.  The
>>>   Webra MC (mixture control) carb I'm using gives a dead linear
>>>   throttle response with NO jump onto the pipe.  Setup this way the
>>>   motor throttles exactly the same as a DZ but with better performance.
>>>   With the stock ProMix carb it throttles a lot like the OS (rich in
>>>   the mid range).
>>>
>>>   Jerry
>>>
>>>   --
>>>   ___________
>>>   Jerry Budd
>>>   mailto:jbudd at qnet.com
>>>   =====================================
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>>>   # discussion-request at nsrca.org
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>>>   #
>>>
>>
>>=====================================
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>
>
>--
>___________
>Jerry Budd
>mailto:jbudd at qnet.com
>=====================================
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-- 
___________
Jerry Budd
mailto:jbudd at qnet.com
=====================================
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