Paul and all the rest of you rotor heads,   I'm taking a few days off
to have knee surgery (partial knee replacement) I won't be responding
to e-mail for about a week at the most.   Paul leave me on the list.
Joy will download every day to keep the mail box from overflowing.
For entertainment at the hospital, I'm taking your drawings of Steve's
engine mount to contemplate.      Jerry

P.S.  Today I officially started building the CH701.  I will need a
single rotor in 18 months or else I will be flying behind a VW.
RotoMax are you listening?

How much weight firewall fwd  Can the.  CH 701 can handle.

Clifton.

Clifton,  the answer is 200 lbs per plans.  A few guys are flying with
heavier engines but that is not a path I want to pursue.  Two hundred
pounds  is possible if the single rotor has aluminum side housings.  I
would like RotoMax and Paul to get together to design an all aluminum
p-port single.  It would be very popular with the LSA guys. A low tech
(carb) with gravity feed  should be an option.   It could be the
foundation engine of their company because it would create a steady
cash flow.   The weight of the planetary  PSRU is too high too,  so I
envision a lighter gear box, possibly a belt.   It would be so
wonderful compared to anything on the market today.  If asked, I would
jump at the chance to provide a firewall forward package for any LSA
aircraft.    Jerry

You could go with a planetary with a carbonfiber
housing that would get you there. do the edges in metal thought
like TI where the bolts go thur. I wouldn't hold your breath
with roto max you need somebody with deep pockets.

Clifton

I don't think $7500 for an engine is deep pockets for an aircraft
engine. You can spend more than that probably for a Mazda one rotor.

Currently the post on their web site for the twin rotor has the
following numbers:130 hp @ 6,000 rpm  120 hp @ 5,500 rpm
4.92 - 9.84 gph 130 pounds less PSRU. $7500.

http://www.rotaryae.com/

Most PSRU's are around 40 pounds bringing the total to 170 pounds.