On performance, our planes were pretty well identical for take off, climb, and top speed. His was the only Rebel that I have flown with that could match my performance (including 160 hp ones), and I attribute that to using the same Sensenich 74 X 54 prop. Previously, he had the 74 X 56, and it was definitely much lower performance including speed.
Interestingly, I swapped props on my new 360 engine, moving from a Sensenich 76 X 54 to a 76 X 56 and lost 100 rpm in climb (2660 to 2560) and about 2 or 300 fpm less. Don't know what it does to top speed, as with either prop, I chicken out at about 140 mph, and the 56 pitch still over revs. My climb is still acceptable though at 1500+ fpm solo, but not seeing 1800 anymore. For comparison, the best my 320 could do was 1100 fpm solo. Again, this is on amphibs.
Walter
----- Original Message -----
From: bransom@dcsol.com
Date: Friday, November 14, 2008 2:25 pm
Subject: [rebel-builders] 0-200 vs 0-320 0235 etc
To: rebel-builders@dcsol.com
Anyone know of performance from use of an Ellison throttle body
carb? I'm
sitting on the impression that this carb is the next best thing
to fuel
injection, in that it does a very good job of getting the
correct amount of
fuel/air to each cylinder. It should alleviate any
problems running at low
rpm too. Anyone know if they're any good?
-Ben/ 496r
a carbedOne thing that really helps is a fuel monitor, especially withdifferent rpmsengine. With my previous 320 engine, I had to play around atspot for maximumand power setting, depending on altitude, to find the sweetthe leanefficiency. That would result in at least a .5 gph saving overif I was justuntil rough method. It cruised easily at 7 or 7.5 gph, even 5that it wastooling around the lake, and sight seeing. This is on amphibs.
Then with my new 360 I was very pleasantly surprised to findpowerful. I save ateven more economical than my 320, even though much moresame fuel flow.least .5 gph at the same speed, or get an extra 5 mph at thehave theI have EI on one side, and that seems to really help lean it more
aggressively without running rough even with the carb. Also Idistribution toSuperior sump intake which is supposed to be better at fuel7.5, and justeach cylinder. Again, this one cruises comfortably at 7 orengine uses moregoes a little faster at that fuel flow than before.
So I for one, don't always buy the argument that a biggerold Lycosaurfuel. It depends also on whether it is EI and/or FI. And theseBehalf Of Kendesign engines are a lot more fuel efficient than some people think.
Walter
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] Onfrom lowSent: November 14, 2008 11:10 AM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] 0-200 MOTOR MOUNT
I've heard guys say this many times and it is no doubt true in some
circumstances. The other side seems to be that the same guys rarely
seem to cruise at such low power. I think it is a combination of
roughness from one cylinder going lean first, plug foulingneighbor's 0-320temperatures, or maybe they just like to go fast?? Myon beingjust won't run smoothly below 8+ gph. Anyway I wouldn't countmagnetos. Iable to do it with a carb, standard intake system, andignitions withbelieve that matched injectors, one or two electronichave anadvance, and mogas will all help at low power.
Ken
Keith Leitch wrote:Sorry, I don't mean to get off track on your post. If youothers, IO-200 I can understand your question. But as far as theunless youpersonnally don't see much sense in using the O-235/IO-240thought abouthave access to one for cheap. I have an O-235 L2C I hadMay as wellinstalling in my Rebel (whenever I get to that point) but after
looking at the weight vs. the O-320 it is sensless to me.little thinguse the O-320 and if you are worried about fuel....thatwas on a 5+called the throttle can easily be pulled back. I recentlygph. Ihour tour with a bunch of Super Cubs and I was flying my O-300
powered 172. Flying at their speeds I burn a little over 5when youguess what I am trying to say is it is nice to have the HPpower to weightneed it....just don't have to use it all the time if you are
concerned with fuel prices. I am waiting for Ron to get his Jabiru
powered Rebel flying so I can get a report. :) The--ratio may be an option for me since I will be on floats/skis the
majority of the time. Keith R661
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