---------------------------------------------------------- Zenith750-List Digest Archive --- Total Messages Posted Wed 01/05/11: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:25 AM - Re: Zenith CH-750 engine choice (j. davis) 2. 05:43 PM - Re: Re: Zenith CH-750 engine choice (Robert Pelland) ________________________________ Message 1 _____________________________________ Time: 06:25:33 AM PST US From: "j. davis" Subject: Zenith750-List: Re: Zenith CH-750 engine choice Thanks for this, Robert. > J, > Describing a radial as being " sexy " in an understatement. In my opinion, airplanes where > invented to hang a radial engine on them. :o) However to be practical, my choice will be > with the affordable, tried and true. Ah, the voice of reason. Sexy can be a siren in disguise ;') > I was fortunate in being able to purchase a used 80 Hp Rotax for my 701, that will need to > be rebuilt. I put about 300 hours on my 701 with a 912UL before selling it. And missing it somewhat ever since! > As far as my 750, I have the latest version 2 of the Zenith plans, and since > it will be registered as a " homebuilt " rather then an LSA, I will benefit from the > weight increase up 1440 lbs gross weight. Ditto. Although I'm not plans building this time around, been there, done that with my Sonex, I will also be building homebuilt, and able to take advantage of the 1440 g.w. > The engine will be a 0 time Lycoming that I will have built for me by the local FBO, who > also runs the engine rebuilding shop http://www.aero-atelier.com/visitez.htm at the local > airport. Looks like I was close last summer when I flew in to Lachute on my way to Faucheurs. Beautiful part of the country (and *nice* little aerodrome!). > I originally was planning on a 0230 at around 115 HP, but since it will be used > on amphi floats, I plan to get the maximum performance out of the aircraft, and have > decided to go with the 0320 at 150 to 160 HP, depending on the compression ratio that will > be chosen when it is rebuilt. Interesting. Just out out curiosity, what would the dry weight of the O320 come in at? > I prefer a regular aircraft engine not only because of the resale value, but because it > will be easy to find parts when needed, not to mention service at any of the thousands of > airfields that we find across both of our nations. I'm not knocking the Rotec, or any > other exotic engine, but you will be hard pressed to find any parts, or service for that > matter at any of the landing strips you will be flying to if you don't have a conventional > aircraft engine. I would also like to add that rebuilt engines such as those I mentioned > above, can be purchased locally for about 40% of the cost of a new engine. At O time, and > with a good warranty, you can't beat that for a great deal. Wonder if aero-atelier would have an O200/230 (my initial thought for a power plant, for most of the reasons you state, before I got sidetracked by the beauty of the Rotec ;') for me? Or is it more that I find one and bring it to them? > A few of my friends have had what we could call, rather bad experiences with their auto > conversion engines, and one even had to disassemble the aircraft and have it towed 300 > miles back home because he couldn't have it repaired where it landed. This is not > something I would be comfortable with > Just my two cents. > regards > Robert Good points, all, thanks for taking time to respond! -- Regards, J. - flying Sonex #325 C-FJNJ, Jab 3300a, Prince P-Tip, Aerocarb - restoring the 'Johnston Special' - former C-IGGY CH701 owner/builder, starting CH750 build soon - http://cleco.ca +-------------------------------+ | J. Davis, M.Sc. (comp sci) | | email: jd at lawsonimaging.ca | | *NIX consulting, SysAdmin | | http://cleco.ca | +-------------------------------+ I bought a house, on a one-way dead-end road. I don't know how I got there. --- Steven Wright ________________________________ Message 2 _____________________________________ Time: 05:43:16 PM PST US From: "Robert Pelland" Subject: Re: Zenith750-List: Re: Zenith CH-750 engine choice ----- Original Message ----- From: j. davis To: zenith750-list@matronics.com Sent: Wednesday, January 05, 2011 9:18 AM Subject: Zenith750-List: Re: Zenith CH-750 engine choice Interesting. Just out out curiosity, what would the dry weight of the O320 come in at? A little while back, I purchased the complete " Tony Bingelis " collection, and in the firewall forward manual there is a comparative engine data table and this is where I obtained the engine information. The 235-L ( 8.5:1 x 105 to 118 HP ) comes in at 218 lbs, while the 320-A is at 244 lbs. In both cases we are talking about dry weight. The compression ratio for the 320-A is a low 7.0 :1, with 140 to 150 hp, so it will operate very well on the low grade 80/87 auto fuel. The difference between the two being only 26 lbs, is not really a big penalty to pay for a decent increase in horse power. I am however, considering biting the bullet and going for the 0320-B at 160HP. Since the plane is not as yet built, I still have some time to make up my mind Wonder if aero-atelier would have an O200/230 (my initial thought for a power plant, for most of the reasons you state, before I got sidetracked by the beauty of the Rotec ;') for me? Or is it more that I find one and bring it to them? You may purchase one of those engines outright, or supply him with a core, and he will gladly rebuild it for you. I have a friend of mine who just purchased a 0200 for a 750 he is building, and the cost for a zero time complete rebuilt/restored engine was a low 12 thousand. regards Robert ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith750-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith750-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/zenith750-list Browse Digests http://www.matronics.com/digest/zenith750-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.