RWS B-PSRU, 2.13 ratio If I recall correctly, takeoff RPM 6250, 26mp?, 5000 gets me about 145kts. but that is still pitched for takeoff. Gear fairings all on now. The eng. is a Bruce T. custom, 1979 high comp. rotors, 1980 turbo housings with the larger oval exhaust, street porting ( ? think that is what is called ), 6 port Mazda intake modified to 4 port all precision matched ( hours & hours with a dremell ) smoothing, polishing, matching, housings to lower intake to mid intake to custom extended tubes reaching across top of eng. to starboard side into custom Dynamic chamber through slight bell-mouths & curved back-plate ( take advantage of rebounding pulses ) 3" Cadillac 4.6L Northstar eng. throttlebody ( very nice design double sealed ball bearing plate support throttle rod, NO vacuum leaks like you get with bushings ) 3" wire support scat to ram air standard Van's RV cowl inlet. That was going backwards. Sorry about that chief. David
From: "Todd Bartrim" <flyrotary@lancaironline.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, June 20, 2017 3:00:29 AM
Subject: [FlyRotary] Re: Forever Projects
Hi Dave;
I thought that you were using an IVO. I've got the 30"-90"×76"Magnum and I never saw numbers like that. I knew I should have cut it down but I also knew that one day I would order new blades for it which I did about 5 weeks ago. So I'll be looking to sell the blades only and I figure they may be hard to sell without the hub but as they are still full length they have a better chance of being bought by someone looking for replacement blades.
I'm looking forward to flying behind the deep pitch version.
What reduction ratio are you running?
Todd
Ivoprop 45 deg. to 105 deg. pitch, 68" three blade, in-flight adjust. David
Sent: Monday, June 19, 2017 1:34:39 AM
Subject: [FlyRotary] Re: Forever Projects
Hey David;
What prop are using there?
Todd
Dreaming with my eyes wide open....