For information on Russian helecopter with VAZ rotary and 9 vee belt primary drive
see http://www.protor.narod.ru/

Layout is similar to R22.
Colin

Looks like the Russians beat you to it Hans.
Also looks like aluminum end housings.
Perhaps it is time for me to fly to Russia and dig up some of these
engines to import :-)

Paul Lamar
 
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