12 d


Paul, I know you have covered this before, but I have started an
ultralight. A Sky Raider 1. I would like to keep it as a Part 103.
Also if possible to use a Wankel rotary.  I see that Freedom Motors
presents a 50lb, 40hp wankel type rotary engine.  Would you review
your objections to the charge cooling type? Thanks, Dewayne Rons

Freedom motors is not real as far as  I can found out.

You would be better off with a all aluminum one rotor Mazda.

Goggle Mazda aluminum end housings. There are several in Australi and
Racing Beat is SoCal. Be user to use silicon nitride apex seals.

Paul Lamar

Thanks, Paul. Actually I haven't got anything back from them, myself.
The single rotor sounds like a possiblity. I'll see where that takes
me. Dewayne Rons
   Hi Dewayne,


    I have almost finished my single rotor all aluminum 13B, the
biggest problem you are going to have is  getting the redrive  to an
acceptable weight, especially if you are only looking around the 40-50
HP area.
    A single rotor naturally aspirated can be good for around 130HP.
you do not have to use all that power but you still have the weight. At
the end of the day a single rotor is going to be around 65-70 Kg,
Really  light
    for the power but maybe to heavy for your application.
     I am putting my 13b in in a Pioneer 300, this is a light sports
aircraft in New Zealand and we have an all up max weight of 600Kg.
    Andrew Campbell.





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