I just sold my Karatoo J6 with an EA81 stock engine and purchased an Avid Flyer Mk 1V with the Rotax 582. All I can say is....please give me back my EA81.Message 1 of 3 , Jul 3, 2011View SourceI just sold my Karatoo J6 with an EA81 stock engine and purchased an Avid Flyer Mk 1V with the Rotax 582. All I can say is....please give me back my EA81.
EA....14 lph...sounds better...more grunt...easy to maintain
582...18 lph...sounds crap.....less grunt...more work maintaining
Having said that, the weight greatly favors the 582. If my memory serves me right, about 35kg against 100 kg
I have had three engines on my Lil Buzzard (a Karatoo copy) First, a 582, then a 583 from a snowmobile, and now the current EA81. The plane with the EA81 wasMessage 1 of 3 , Jul 8, 2011View SourceI have had three engines on my Lil Buzzard (a Karatoo copy) First, a 582, then a 583 from a snowmobile, and now the current EA81. The plane with the EA81 was 122lbs heavier than with the 582/583. Performance was best with the 583 (90hp), but the Subaru is much better then the 582 despite the extra weight. Climb solo went from 700fpm 582 to 1000fpm EA81. Gross weight climb the 582 really struggled, 300fpm versus 800 for the Soob. Not much of a change in cruise. Fuel consumption is much less than the Rotax. I figure my FWF weight at about 250lbs. The Lil Buzzard/Karatoo are similiar planes to an Avid (unsure about structure though), so maybe this info will help you make a decision.
--- In AirSoob@yahoogroups.com, "miyer2u" <miyer2u@...> wrote:
> I am a builder and flyer and am new member to this group. I am currently working on an Avid model C converted to mark -4 project (Heavy hauler) project. I am working on the firewall forward and have both an EA 81 and Rotax 582 and deciding on the choice to go.
> Though comparing EA 81 vs Rotax is comparing apples to oranges, I am more inclined towards the Subaru EA 81 but the added weight makes me nervous. I wanted to get some inputs from Avid owners with Subaru EA 81 on the following:
> - How does the airplane perform? Ie is it too nose heavy? Does
> it feel cumbersome?
> - Does the added weight of the engine cause any problems
> - What is the cruise and stall speed with this set up?
> - Typically what are the RPM ranges?
> - Typically with no power, what is the sink rate?
> - The total dry weight as suggested is 200 pounds, is that a
> true figure?
> I would really appreciate any inputs based on your experience.
> Thanks much!
> Mahesh Iyer
> Southern Oregon