lors01(at)msn.com
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 Posted: Sat Jul 15, 2006 6:28 am Post subject: Sube challenge |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Hi Mickey,
There have been RV-4s with Sube installations but not all that many. Can't remember his last name right now but Bob B. flew his turbocharged Sube powered RV-4 in the 2002 SUN 100 race at 207 mph and that's what pushed me into entering the following two years. The installation was designed by Turbo Tom (RIP, I still miss him) and he and Bob finally gave up on pushing the Sube that hard after the 4th (or was it 5th ?) engine grenaded with a thrown rod. For the record, the only part I've ever broken in a rotary engine has been a rubber O-ring.
But anyway, the performance of any of the two place RVs have always been very close so an RV-6/A (most Subes seem to be in that model) should be a valid comparison. I'll even spot you a few MPH and a hundred FPM rate of climb : ) (my solo w/ 10 gal fuel, standard day ROC is 2600 fpm at SL)
I'd gladly do the fly-off in my -8 but that would not be a 'fair fight' with the 300 HP 20B 3 rotor engine on it. (but any of you Rocket drivers want to go head to head in a time to climb race : )
For the record, I am not anti-Sube. I think it is a fine engine when operated within it's limits and I'm pulling for Eggenfelner to succeed in supplying a cost effective alternative to the Lycoming. The rotary is not the answer for the average builder because of the lack of a complete FWF package. I will probably not offer one (never say never) due to the enormous amount of time required to develop all the details that go into it. You can ruin a perfectly good passion by having it become a business. I flew more hours before I started RWS. I'll bet Jan did too.
BTW, the Sube equaled the Lycoming in fuel consumption at the recent fly-off at Van's (see latest RVator) but it I think it could have done a lot better if it were equipped with a purpose-built engine controller instead of the stock Sube ECU which runs richer than necessary at cruise condition. Want to try one Jan?
Oh yea, Jan responded to my challenge on the Yahoo Egg list by saying his RV-6A will be flying in 8 weeks.
Don't know which Eggenfelner FWF package he is installing but would assume it is his flagship model supercharged H6 six cyl. That should be a hell of a good fight! You're on!
Tracy Crook
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