---------------------------------------------------------- Kitfox-List Digest Archive --- Total Messages Posted Fri 09/24/10: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:02 AM - props and engines (Ed Gray) 2. 11:50 AM - Re: props and engines (Tom Jones) 3. 12:41 PM - Re: Re: props and engines (JC Propeller Design) ________________________________ Message 1 _____________________________________ Time: 09:02:51 AM PST US From: "Ed Gray" Subject: Kitfox-List: props and engines Looking from comments from any of you Fox builders. I have replaced my 3 blade GSC original prop with a new 2 blade 68 inch Warp Drive with nickel leading edge. Doing this in preparation for adding floats in the near future. The Warp pulls great and ups the cruise speed about 8 mph (this is a 582 on a model 2 with lots of fairings and no wheel pants). But, there is a vibration in the engine that I never had with the three blade prop. The blades track perfect and pitch is equal. Blades brand new so I assume they are balanced. Is this typical for change from 3 blade to 2 blade? Also, I am about convinced to order the Eggenfellner "Viking" for the Kitfox 4 1200 now building. I like the extra power for floats and the Honda reliability. Anyone know someone who has ordered one or has an opinion? Ed Gray, Dallas, K2 582 and K4 building. Do not archive ________________________________ Message 2 _____________________________________ Time: 11:50:31 AM PST US Subject: Kitfox-List: Re: props and engines From: "Tom Jones" Ed, I switched from a three blade 68" GSC to a 72" two blade Warp square tip on a 503 Rotax with 3:1 gear box. The GSC three blade was smooth at all RPM. The two blade has a slight vibration at 3000 RPM only. At all other RPM it is smooth. The two blade improved climb significantly. -------- Tom Jones Classic IV 503 Rotax, 72 inch Two blade Warp Ellensburg, WA Read this topic online here: http://forums.matronics.com/viewtopic.php?p=313634#313634 ________________________________ Message 3 _____________________________________ Time: 12:41:38 PM PST US From: "JC Propeller Design" Subject: Re: Kitfox-List: Re: props and engines Some years ago it was found out if the pitch was set equal at 75% radii on both or all blades it run smoother, not all blades have the same twist from there to the tip. Also make sure every prop you mount on your plane is 100% balanced, get a balancer! Jan www.jcpropellerdesign.com ----- Original Message ----- From: "Tom Jones" Sent: Friday, September 24, 2010 8:47 PM Subject: Kitfox-List: Re: props and engines > > Ed, I switched from a three blade 68" GSC to a 72" two blade Warp square > tip on a 503 Rotax with 3:1 gear box. The GSC three blade was smooth at > all RPM. The two blade has a slight vibration at 3000 RPM only. At all > other RPM it is smooth. > > The two blade improved climb significantly. > > -------- > Tom Jones > Classic IV > 503 Rotax, 72 inch Two blade Warp > Ellensburg, WA > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=313634#313634 > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kitfox-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kitfox-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kitfox-list Browse Digests http://www.matronics.com/digest/kitfox-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.