<DIV>I am using a 14x8 on a Hano type pipe (7.5# Desire) which gives 10,500 RPM. I had problems setting a longer pipe for for a 14x10, which was the target prop at 9,000 RPM. I am going to try a Perry pump set up, with the 13.8X10 4B. I need to change out the rear bearing soon (250+ flts). </DIV>
<DIV>A while back, I read somewhere that the 91FX likes to rev around 10,000, given it,s over square stroke and porting configuration. </DIV>
<DIV> </DIV>
<DIV>Rodney</DIV>
<DIV>NSRCA #2906<BR><BR><B><I>Wallaceaero1@aol.com</I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">I liked the APC 14-8 on a 7 3/4 pound MK Skystar using the stock OS Muffler. This Spring I am going to experiment with a<BR>tuned pipe/Mueller header and try various props. I did see Scott Anderson's 4 blade setup on his Viper91 and it did pull<BR>very well.<BR>=================================================<BR>To access the email archives for this list, go to<BR>http://lists.f3a.us/pipermail/nsrca-discussion/<BR>To be removed from this list, go to http://www.nsrca.org/discussionA.htm<BR>and follow the instructions.<BR><BR></BLOCKQUOTE><p>
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