Ack, i'm a little embarrassed for not recalling the 1.8 ratio. Yep, that and
the corresponding smaller prop really dashes this option IMO.
Guess I'll read up on some of the other Sub options mentioned, e.g. the
Marcotte psru mentioned by Ken. Strangely (but not so strangely), this comes
back to the original Bush/STOL issue, not only wrt prop diameter, but cg of
the engine, etc. The 0320 is nice, but forward cg doesn't help get the
slowest possible landing (unless the firewall and seats are moved aft a
little, which effects visibility). The 0320 would also not be quite as good
on fuel economy or rebuild cost, but at least it should last a very long time
and (probably) never quit unexpectedly. I guess it boils down to deciding
which compromises to take.
-Ben
On 11/14/02 3:35 PM,
WALTER.KLATT@SHAW.CA wrote to MURPHY-REBEL:
-> One problem that I see with the Eggenfellner 2.5 is the
-> 1.82 ratio on the redrive. That means that you would be
-> turning over 3000 prop RPM to get the max hp at 5600
-> engine RPM. That means a smaller prop would be
-> necessary which would not be the most efficient for
-> slower floatplanes like the Rebel. Not sure why he
-> didn't choose 2.2 like many other sub conversions. This
-> is no great problem for fast planes like RV's and
-> Glastars, and even on those they are recommending an
-> expensive var pitch Quinti prop.
->
-> After all that expense, again you could buy a good used
-> 0320.
->
-> Too bad Rotax doesn't build a 200 hp engine. I'm sure
-> it would have great hp to weight, but would probably
-> cost 50K US, too.
->
-> I know what you mean about the Sub cars out west here.
-> We actually own two of them, and my wife would never
-> let me buy another make. You see a lot on the road in
-> Seattle, too. I was waiting for the new Baja to come
-> out with their 230 hp supercharged 2.5 like in their
-> concept vehicle, but it didn't happen, so maybe I will
-> have to buy another kit to build instead...
->
-> Walter
->
-> > -----Original Message-----
-> > From:
mike.davis@dcsol.com
-> > [mailto:
mike.davis@dcsol.com]
-> > Sent: Wednesday, November 13, 2002 4:30 PM
-> > To:
murphy-rebel@dcsol.com
-> > Subject: RE: Subaru vs Lycoming ? was Bush/STOL
-> >
-> >
-> > I sure wish Jan would build a 6 cylinder for
-> > the Moose! I've talked to one
-> > Glastar owner with his engine who just
-> > couldn't say enough good about it.
-> >
-> > There are 2 Crossflow owners here in town
-> > and both say they absolutely love
-> > the engine... but pray you don't need any
-> > customer service! One of them had
-> > trouble with his PSRU after only a couple of
-> > months, Crossflow said send it
-> > back and we'll get it fixed and right back
-> > to you... it took 6 months! Every
-> > once in a while I wish I had bought a Rebel
-> > or Elite so I could put
-> > Eggenfellner's engine on, there's just not a
-> > 6 cylinder Sub out there that
-> > gives me the warm and fuzzy...
-> >
-> > Interior Alaska having the highest per
-> > capita Sub population in the world!
-> > (just guessing here, seems like every 4th
-> > car on the road is a Sub), I'm sure
-> > I can find plenty of local expertise to help
-> > me out if I go that route.
-> >
-> > Mike
-> >
-> > On 11/13/02 3:22 PM,
MURPHY-REBEL@DCSOL.COM
-> > wrote to MIKE DAVIS:
-> >
-> > -> I've seen some posts here about people
-> > building their own Sub EJ-25 Subaru,
-> > -> but am wondering if anyone has gone with
-> > an Eggenfellner Subaru?
-> > ->
-> > -> Jan Eggenfellner reports the all up
-> > weight is 327lbs. I'm guessing this is
-> > -> close to the flying weight of an 0-320 --
-> > anybody know for sure on that? I
-> > -> think I've also heard that the Warp prop
-> > hub won't survive with the
-> > Lycoming,
-> > -> and the Sensenich props used instead are
-> > Heavy. An Eggenfellner with Warp
-> > (or
-> > -> Quinti var pitch) is therefore probably
-> > lighter than an O-320.
-> > ->
-> > -> Traditionalists may still prefer the Lyc.
-> > Initial cost of a 0 time Lyc is
-> > -> better, but everything else looks better
-> > for the Eggenfellner (to me).
-> > -> Comments?
-> > -> -Ben
-> > ->
-> > ->
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