<HTML><BODY STYLE="font:10pt verdana; border:none;"><DIV> </DIV> <DIV>Mike</DIV> <DIV>You do a cat scan of the pipe like I did. You set up the study for 2 mm increments and run the scan on a CT scanner.</DIV> <DIV>Jim Ivey</DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt Arial">----- Original Message -----</DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt Arial; COLOR: black"><B>From:</B> Jerry Budd</DIV> <DIV style="FONT: 10pt Arial"><B>Sent:</B> Wednesday, June 18, 2003 9:15 AM</DIV> <DIV style="FONT: 10pt Arial"><B>To:</B> discussion@nsrca.org</DIV> <DIV style="FONT: 10pt Arial"><B>Subject:</B> RE: Webra 145 with Greve Pipe</DIV> <DIV> </DIV>Hi Mike<BR><BR>Stick a small dowel down the inlet of the pipe until you hit the <BR>baffle, make a mark on the dowel coincident with the front of the <BR>pipe, remove the dowel and measure the distance on the dowel from the <BR>end to the mark.<BR><BR>Jerry<BR><BR><BR>> How do you determine where the baffle is on the Greves pipe? Mike<BR>><BR>>-----Original Message-----<BR>>From: Keith Black [mailto:tkeithb@attbi.com]<BR>>Sent: Tuesday, June 17, 2003 11:39 PM<BR>>To: discussion@nsrca.org<BR>>Subject: Re: Webra 145 with Greve Pipe<BR>><BR>><BR>>As long as we're talking about the Webra 1.45, RPMs and pipe length, what<BR>>are some experiences with the Webra 1.45 and the Greve pipe. Piedmont's web<BR>>site it recommends 27.5" to the first baffle, but recently Lee Davis posted<BR>>that he has his set at 28.5" to the first baffle.<BR>><BR>>Mine's actually running pretty well at 27.5", I'm just wondering if I can<BR>>improve it by moving it back an inch.<BR>><BR>>Lee, if you read this, why did you move yours out another inch over what<BR>>your web site recommends? What did this improve (top end, mid range, etc.)?<BR>><BR>>Does anyone else have experiences to share with this combination?<BR>><BR>>Thanks,<BR>>Keith Black<BR>><BR>>----- Original Message -----<BR>>From: "Jerry Budd" <jbudd@QNET.COM><BR>>To: <discussion@nsrca.org><BR>>Sent: Wednesday, June 18, 2003 12:00 AM<BR>>Subject: Re: Webra 145<BR>><BR>><BR>>> >Let's try again - what rpm are you guys getting with what props with the<BR>>> >Webra 145? I'm trying to tune mine with a Bolly pipe and have no idea<BR>>what<BR>>> >to look for. I'm trying both a 17X10 and 17X12N prop.<BR>>> ><BR>>> >Thanks for any suggestions.<BR>>><BR>>> 82-8300 rpm when new, 85-8600 rpm after ~30 flights.<BR>>><BR>>> Magnum #1, OS-F or YS plug, ES-2C140L90 pipe set at 23-1/4" baffle to<BR>>> plug, stock Mac's 2-1/4" rise header, and an APC 17x12 prop. The<BR>>> Webra MC (mixture control) carb I'm using gives a dead linear<BR>>> throttle response with NO jump onto the pipe. Setup this way the<BR>>> motor throttles exactly the same as a DZ but with better performance.<BR>>> With the stock ProMix carb it throttles a lot like the OS (rich in<BR>>> the mid range).<BR>>><BR>>> Jerry<BR>>><BR>>> --<BR>>> ___________<BR>>> Jerry Budd<BR>>> mailto:jbudd@qnet.com<BR>>> =====================================<BR>>> # To be removed from this list, send a message to<BR>>> # discussion-request@nsrca.org<BR>>> # and put leave discussion on the first line of the body.<BR>>> #<BR>>><BR>><BR>>=====================================<BR>># To be removed from this list, send a message to<BR>># discussion-request@nsrca.org<BR>># and put leave discussion on the first line of the body.<BR>>#<BR>>=====================================<BR>># To be removed from this list, send a message to<BR>># discussion-request@nsrca.org<BR>># and put leave discussion on the first line of the body.<BR>>#<BR><BR><BR>-- <BR>___________<BR>Jerry Budd<BR>mailto:jbudd@qnet.com<BR>=====================================<BR># To be removed from this list, send a message to <BR># discussion-request@nsrca.org<BR># and put leave discussion on the first line of the body.<BR>#<BR><BR></BLOCKQUOTE></BODY></HTML>