New at Murphy

[Nielsenbe]

too bad that even if you wait 5 years it will probably be no better than the
LS1 and 4 times the cost at least. We just need murphy to offer a chevy small
block FWF package minus the actual engine.

Brad



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[klehman]

I would guess that when we see the rotax V6 numbers, at least some folks
will decide that it blows the doors off a 300 hp Lycoming on an SR.
Somewhat like a 912 tends to perform better than most equivalent rated
Lycosaurs on a Rebel. The larger slow turning prop will give more
takeoff thrust per hp. The turbo likely means no reduction in takeoff
power due to altitude to at least a few thousand feet.

From Bob's comments, if the normally aspirated engine is only burning
11gph at .42 sfc then it is only making 11 gph * 6 lb/gal / .42 hp-hr/lb
= 157 hp.

Off the top of my head I would guess that at 18 gph the radial engine is
making about 215 hp. leaned out. Is that in the ballpark?? If it is
getting the same cruise speed, that will give an indication of the
difference. More efficient prop, a lot less cooling drag, significantly
less fuel weight for an equivalent mission, etc.

Ken

Not sure its fair to compare that
larry173 wrote:

Exactly we need a 350 to 400 hp At this point LS1, Ls^ is our only good
option. Rumers are of a V8 400hp Bombi but in about 5 years.
----- Original Message -----
From: <Nielsenbe@aol.com>
To: <murphy-rebel@dcsol.com>
Sent: Wednesday, August 13, 2003 11:36 PM
Subject: Re: New at Murphy

why 300HP? It seems they would go for higher HP. There seems to be alot of
engines around 300 but alot fewer at 350-400. Is it because they are

offering a

certified replacement for the 540-550 class engine? Seems to be lacking on

the

moose though.

Brad

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