Robert,

This is something I'm unfamiliar with and Paul would be a better

person to

make suggestions, but from my observations the prop outlet doesn't

seem

horizontal to the motor drive line, so a rigid drive might be out of

the

question.
I'm wondering if an Automotive tail shaft type assembly might fit the

bill.

I have no expertise so this is just some thoughts of mine.

I'm wondering how it's accomplished in the Swiss design - are you

aware of

this particular design?
George (down under)

Robert Clark - CAD/Graphics wrote:

This of coarse is based on BD-5 Style aircraft.  I am un-familiar with
the Swiss design maybe you could enlighten me?

   I have a friend that is building an Orin 4-seat pusher (post pusher
later)  He does plan on using an automotive drive shaft connected to a
bulk head in the tail that will carry the thrust not the shaft.  I will
try to expound on this idea more in the next few days.

  I often thought that the drive belt and pulley system as originally
design for the BD-5 could be the answer to the drive issue.

Good topic lets see how far out of the box we can get.  (great thinking)
Robert Clark
CAD/Graphics Planner

Robert,

I thought it looked like a cross between the BD 5 and the Swiss aircraft.

Paul ( or anyone) what was the name of that Swiss Aircraft again, driven by
the 100 hp rotary engine?

I would look to a composite 2 seat design, as a suggestion. This would be
lighter and perhaps get into the sport category.

If it weren't for the high RPM's you could install the reduction box  at the
rear and a shaft connecting the motor to the reduction box (PSRU). The PSRU
( Planetary gears) would be rigid mounted to the airframe.

George ( down under)

Aeriks.

Paul Lamar
 
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