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1. 08:06 AM - Re: Fw: Engine decision time ... (Gregory Richardson)
2. 04:34 PM - (Matt Dralle)
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| Subject: | Re: Engine decision time ... |
--> RV9-List message posted by: Gregory Richardson <rv9flyer@sbcglobal.net>
Gerry,
I tried to stay out of this, cause it's kinda like which came first, the chicken
or the egg. I however began working out numbers one day, which I think you
should really do prior to deciding on either engine. I spoke unofficially to
Van's staff at Oshkosh, and found that IF you really derate the 360 to 160 horses,
they really don't think it will hurt. I approached this from the standpoint
of 320's becomming somewhat hard to come by, however Lycosaur just released
a 320 experimental version just like the experimental 360, and should prove
to inject more engines into the masses. I personally am going to go ahead and
install an O-320 and inject it, for the following reasons. It has a tried and
proven fuel burn of 8.5 gph, versus whatever I end up with in the IO360, I don't
have to sweat the bigger engine at 10,000', and redline is redline. I would
urge you to work out the same problem that I did on your trusty E6B, and see
where it leaves you for your trip lengths. I once
compared a Spamcan 172 at 120 kts, to a Piper turbo Dakota at 145kts. I found
that on a trip length of 500 miles, I would arrive a sum total of 43 minutes
faster, but burn 15 gallons more fuel. Now we all pride ourselves on flying straight
to the dest., but know that it rarely happens. I found that with the
higher operating costs, it was not worth it to me. Work out your own usual trips,
and work it at a cruise of what Van calls out, versus a "high" cruise. I
think you will find that it is only minutes, and really not worth the extra trouble
and worry. After all, we started this cause we wanted to fly, not sit
on the ground. Good luck in your decision.
Greg Richardson
RV-9a fuselage
--> RV9-List message posted by: Gerry Filby
Thanks to all of you for your helpful posts - lots of food for
thought !
g
>
> --> RV9-List message posted by: Gerry Filby
>
>
> Fellow builders,
>
> Its that daunting and exciting time to decide what engine to
> put in my RV9 (taildragger). I've decided to rule out the auto
> conversions and go Lycosaur (IO-320 or 360) but I could use a
> like a little help deciding which. The 9 fuselage is pretty
> much identical to the 7, so it will take a 360. I know Van's
> recommends the 320 as the max for the 9 presumably to limit the
> possibility of exceeding Vne for the airframe etc etc.
>
> I'm wondering if folks already flying their 9s are getting max
> performance as advertised with the 320 and thus there's no
> purpose to putting in the 360. My mission is fastest possible
> cruise for frequent trips up and down the California coast from
> my home base in San Francisco to destinations like LA, San
> Diego, Tahoe, Portland, Seattle with the occassional coast to
> coast jaunt. Resale value is probably less of a concern to me
> - I can't ever see myself selling this puppy.
>
> Any experiences, thoughts, rants, prejudices and musings will
> be most welcome :)
>
> __g__
>
> ==========================================================
> Gerry Filby gerf@gerf.com
> Tel: 415 203 9177
>
>
>
>
>
>
>
--
__g__
==========================================================
Gerry Filby gerf@gerf.com
Tel: 415 203 9177
Message 2
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rv7-list@matronics.com, rv8-list@matronics.com, rv9-list@matronics.com,
--> RV9-List message posted by: Matt Dralle <dralle@matronics.com>
Listers,
Gary VanRemortel just sent me an update to the RV Yeller Pages and it
can be found here:
http://www.matronics.com/YellerPages/
Thanks Gary!!
Matt Dralle
Matronics Email List Admin.
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email
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