Hello Paul
This has been on before, but the mind is getting feeble and I can`t remember the figures,
so please forgive me for asking again:

1. What would the weight of a single rotor with aluminium end housings be?

2. Can I use a 13b for this?

3. What power can I expect from this engine, p-ported and running at 7000 rpm
 with a turbo charger? I am investigating this as a power plant for a light, homebuilt helicopter.

4. What turbo would you recommend for this set-up?

5. Would I need an inter cooler for this?

Thank you and regards,

Erik in Parkes, Australia.


1. Under 100 pounds. Less the turbo.

2. Yes.

3. About 120 HP NA and then it depends on the boost.

4. I like the large Aerocharger. The high temperature of the rotary
exhaust will have less of an effect on the life of the turbine blades.

5. An intercooler is a good idea. Otherwise monitor the intake
  air temp and keep it below 140 F.

Paul Lamar