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On Wednesday, June 29, 2005, at 05:36 PM, George Lendich wrote:
From Paul Lamar's list it has just been posted that the p port engine
on the dyno at MazdaTrix with remote fuel injectors is now running very
well, developing 220 hp (this sounds like a 6000 rpm number to me but
the post did not say the rpm) and it is idling smoothly at 1000 rpm. I
can't speak about 4 ports or six ports but clearly cool side injection
will work with 2 ports. Fine tuning can be expected to find more hp.
Yahoo!!! Jerry
Jerry,
I'm glad your not too busy to follow the progress, you will notice that PL
has mentioned he is NOW trying to seal the slide throttle, this might have
been one of his problems, as was suggested to me, by someone in the know.
Did you see my suggestion in this regard, in having the throttles separate,
as are the butterflies?
I think he still may have a small problem with one inlet scavenging from the
other, with this duel connected slide.
Something to watch for if you intend to go in this direction!
Attached drawing!
George ( down under)
<Slide Throttle.GIF> Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html
George, I think separating the throttles will be unavoidable if one wants to fine tune the engine. As presently designed it is unlikely that the two rotors can be balanced as you have pointed out. Not a problem for me as I am not tempted by the slide throttles, at least not until they are perfected and shown to be superior to a regular butterfly. BTW, 222 hp at 7500 rpm leaves plenty of room for improvement. I would expect around 250 hp. Plenty of work yet to be done....BUT this is a very good start. Paul has accomplished a lot in a shot time. I am so pleased (and relieved) that the remote injectors worked as they did and that throttle response seems to be good. As Paul said, to truly gage throttle response the engine will need a prop but it apparently reacts instantaneously in the dyno. Jerry
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