"wankle" rotary

My5ABaby · 05-30-2008, 06:55 AM

I found this website about his plane/engine: http://www.geocities.com/eaa818/dmischkebd5.html

Phoenix7 · 06-03-2008, 07:48 PM

Quote:

Originally Posted by My5ABaby

I found this website about his plane/engine: http://www.geocities.com/eaa818/dmischkebd5.html

Quote:

11Feb2008 - UPDATE

I now have a rotary engine installed and running in my BD-5. It runs really hot. The stainless steel exhaust stacks glow bright red and the temp probe in the muffler reads 1300 F for short runs. However, SS 321 should be good for 1700 F, so I should be OK. The engine is throttle body fuel injected and has a dual electronic ignition system. It burns a mix of gas and 2 stroke oil, which is used to lubricate and cool the rotor and bearings before going into the combustion chamber; there is no seperate oil system. Timeing is computer controlled. I built the muffler and exhaust system to fit within the confines of the BD engine compartment. I used 321 Stainless Steel that can withstand the 1500 F that I expect for continuous operations. The engine couples to the standard BD-5 drive system. Engine RPM is reduced by pullys and a cog belt, 1.6 to 1, going to the drive shaft and prop. I have switched to the rotary hopeing for a smoother, more powerful and more reliable engine. We shall see. Stay tuned....

8May2008 - UPDATE
I tried to cool the 814 Wankle by recoreing the radiator and improving the airflow, but that was not enough. I would have to install a much larger radiator and make significiant changes to the existing airframe. I was able to get in some short flights with the Wankle and enjoyed the acceleration and smoothness. But short flights were not the plan, so I have pulled the Wankle and reinstalled the 3701 Hirth. I am going to sell the Wankle. If interested, check the Classified page

I guess he's limited to a certain size radiator in that tiny plane.

captn kev · 06-04-2008, 05:52 AM

Quote:

Originally Posted by phoenix7

I guess he's limited to a certain size radiator in that tiny plane.

Oh for sure this aircraft was originaly designed for an aircooled Polaris engine.
After that didnt work a Hirth aircooled was tried
After that didnt work a Zenoa aircooled was tried
after that didnt work ect *&^#
In the end the best but less than cost effective was a Turbine GPU from helicopters or a 2 stroke water cooled rotax.the hunt still goes on.

05-30-2008, 06:55 AM	#1
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 2,377 Rep Power: 20	I found this website about his plane/engine: http://www.geocities.com/eaa818/dmischkebd5.html __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."