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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
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| Subject: | 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
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| Subject: | 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
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