<HTML><BODY STYLE="font:10pt verdana; border:none;"><DIV> RC</DIV> <DIV>Sounds like you are experiencing the same problems I had, had, had. I solved my problems by putting a regular backplate on it with a pressure tap and a cline regulator system. I have 4 gallons thru it and it has not coughed yet. Looks good runs great. I use 15% cool power also.</DIV> <DIV> </DIV> <DIV>Jim Ivey</DIV> <DIV> </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> RC Steve Sterling</DIV> <DIV style="FONT: 10pt Arial"><B>Sent:</B> Sunday, June 29, 2003 8:36 PM</DIV> <DIV style="FONT: 10pt Arial"><B>To:</B> Discussion@Nsrca. Org</DIV> <DIV style="FONT: 10pt Arial"><B>Subject:</B> Another Webra 1.45 AAR Data Point</DIV> <DIV> </DIV> <META content="MSHTML 6.00.2800.1170" name=GENERATOR> <DIV><FONT face=Arial size=2><SPAN class=238374723-29062003>I've been running 15% Cool Power all Synth in my Webra 1.45 (original carb) mounted in my Focus. Information received from this discussion group helped me tune through a rich midthrottle {lowered pump pressure 1/2 turn and lengthened pipe an inch). Been running great through the last week (took some days off to tune and practice).</SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=238374723-29062003></SPAN></FONT> </DIV> <DIV><FONT face=Arial size=2><SPAN class=238374723-29062003>First flight yesterday, she goes real rich on takeoff then flames out before I can get it back around. Ground tests showed I could keep it running through mid & full throttle only if I leaned the high end mixture to max rpm-- why too hot.</SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=238374723-29062003></SPAN></FONT> </DIV> <DIV><FONT size=+0><SPAN class=238374723-29062003><FONT face=Arial size=2>What had changed?? I had been running it on 15% Cool Power, ran out of that. Found some 20% Cool Power 4 stroke in the garage, and had put that in the can. Figured it would work OK with a retune, and had done that before the fateful takeoff. Guess that decision wasn't so good.</FONT> <DIV><SPAN class=228510003-29062003></SPAN> </DIV> <DIV><SPAN class=228510003-29062003><FONT face=Arial><FONT size=2>I found a gallon of Magnum #1. Drained the tank of the 20% 4 stroke and refilled with the #1. Cranked it back up. Ran like a top, great transition throughout the range. Able to richen up without problem.<SPAN class=238374723-29062003> Flew today and it ran great.</SPAN></FONT></FONT></SPAN></DIV> <DIV><SPAN class=228510003-29062003><FONT face=Arial><FONT size=2><SPAN class=238374723-29062003></SPAN></FONT></FONT></SPAN> </DIV> <DIV><SPAN class=228510003-29062003><FONT face=Arial><FONT size=2><SPAN class=238374723-29062003>If the symptoms sound familiar, try something like 15% all synth or Magnum #1.</SPAN></FONT></FONT></SPAN></DIV> <DIV><SPAN class=228510003-29062003><FONT face=Arial><FONT size=2><SPAN class=238374723-29062003></SPAN></FONT></FONT></SPAN> </DIV> <DIV><SPAN class=228510003-29062003><FONT face=Arial><FONT size=2><SPAN class=238374723-29062003></SPAN></FONT></FONT></SPAN> </DIV></SPAN></FONT></DIV></BLOCKQUOTE></BODY></HTML>