---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Wed 08/04/10: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:25 PM - Sensenich Prop (Damien) 2. 04:39 PM - Re: Sensenich Prop (Paul Mulwitz) ________________________________ Message 1 _____________________________________ Time: 04:25:29 PM PST US From: "Damien" Subject: Zenith601-List: Sensenich Prop Hello. I have a Zodiac 601 HDS. I had GSC 68 inch, 3 blade prop. Today I switched to a 68 inch Sensenich prop. It was a bit bumpy up there this afternoon, but at 5000 RPM, it seems that I have picked up 15 mph with the Sensenich prop. I will try to report more solid numbers later. The blade is pitched to 3; (the pitch numbers go from 1 to 5) When I did a static run-up, it was 4700/4800 rpm. When I got up to altitude and leveled it out, the most RPM I could get was 5100. The fellow who built my plane has a rubber stop about an inch long between the panel and the throttle. I am trying to think this through. My plan is to cut the rubber stop until I am able to reach either 5500 or 5800. This would give me more RPM at takeoff and allow me to cruise faster if I want to. Sound like a plan ?? Regards, Damien N48TK ________________________________ Message 2 _____________________________________ Time: 04:39:18 PM PST US From: "Paul Mulwitz" Subject: RE: Zenith601-List: Sensenich Prop Hi Damien, Be careful with the throttle linkage for your engine. I got a leased plane (Tecnam Echo Super) with the same engine (912ULS) and had nightmares for months with faulty throttle linkage and friction lock mechanism. You need to keep the dual carburetors synchronized, and the control from the cockpit must allow for full control in both directions from idle to maximum power. If you haven't been to the Rotax school, I strongly suggest you study all the engine stuff around the carburetors very carefully before messing with it. You might do best to get a chapter member with experience on this engine to help you out. There are also great resources online, but you need to be intimate with several different documents before doing anything on this monstrosity of an engine. Paul XL with Jabiru doing upgrade From: owner-zenith601-list-server@matronics.com [mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Damien Sent: Wednesday, August 04, 2010 4:25 PM Subject: Zenith601-List: Sensenich Prop Hello. I have a Zodiac 601 HDS. I had GSC 68 inch, 3 blade prop. Today I switched to a 68 inch Sensenich prop. It was a bit bumpy up there this afternoon, but at 5000 RPM, it seems that I have picked up 15 mph with the Sensenich prop. I will try to report more solid numbers later. The blade is pitched to 3; (the pitch numbers go from 1 to 5) When I did a static run-up, it was 4700/4800 rpm. When I got up to altitude and leveled it out, the most RPM I could get was 5100. The fellow who built my plane has a rubber stop about an inch long between the panel and the throttle. I am trying to think this through. My plan is to cut the rubber stop until I am able to reach either 5500 or 5800. This would give me more RPM at takeoff and allow me to cruise faster if I want to. Sound like a plan ?? Regards, Damien N48TK ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith601-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith601-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/zenith601-list Browse Digests http://www.matronics.com/digest/zenith601-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.