Hi rotaryeng

 Can someone please assist with a technical question regarding a RX8 4
 port low power manual engine 190 bhp
 engine will be used in helicopter.

 We would like to find out what the rotational inertia is so a damper
 can be designed for the pulsation

 Also can someone clue me up regarding the purchase of aluminium end
 plates, where to purchase and what should the cost be,

 Would very much appreciate your assistance

 Kind regards
 George



 Kind Regards
 George Crooks


 I have no idea on the rotational inertia but here is a coupling design
 that has evolved from years of experience.

 Aluminum end plates are available from Racing Beat.

 http://www.racingbeat.com/RX7-1993-1995/Rotor-Intermediate-Housings.html

 They are peripheral exhaust and do not use the RX8 side exhaust.
 In that case you might as well sell the 4 port RX8 engine and buy
 a 3rd gen RX7 engine and base it on those rotor housings, e-shaft and
 rotors.

 I recommend p-port intake as well. In that case you will have 250
 HP to work with at 7500 RPM.


 Paul Lamar

 --

 George, If you have a 3D program I can send you an IGES of the coupler.

 Paul Lamar

    I was told by a relative, working in the aeronautical engineering field,
that helicopters are highly complex and extremely difficult to design, and
 the people that are known for being able to design a working helicopter
 are very few, and known to everybody in the industry.

A French engineer having proven his expertise in helicopter design had an
argument with his employer, in certain businesses, nobody would hire you if
you leave another company in the field, as this may result in transmitting
know-how, patents and other industrial secrets to competitors, and when
the Spanish govt knew this, it was in the 60's, they hired that expert who
built several models of helicopters, if I remember well, under the mark
'AISA', for Industrial Aeronautics in Spanish.

Around 1986, I made a car trip for reasons of work from Madrid to
Oviedo (Asturias) and while passing next to a wreckage-recycling lot,
 I saw one of these  helicopters standing among the many cars there.

I ignore completely the final destination of this piece, and as roads
changed since then, it would be extremely difficult finding the place again,
but a similar thing seems having happened with at least one of the
prototypes of Wankel powered Corvettes, that was bought by a British
writer when it was about to be put into pieces, and is shown in local
Wankel lover's meetings, but never making the engine run, previously,
two GM Wankel powered Corvettes were at exhibition in the Ford's
Dearborn Museum in Detroit, at least, it were there in March 1988.

I read somebody stating that these Wankel Powered Corvettes, one
with two, and the other with four rotors, won't be allowed today going
 on roads or streets, as none of two met the rules about headlights.


Regards. Salut †

     Jose Gros-Aymerich
      Madrid, Spain


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