Hi Group,

if you're building your own plane AND you're thinking of installing
anything but a direct drive engine prop/engine system (i.e. a redrive,
drive train, whatever), I urge you to read on:

Donald P. Hessenaur - an engineer who worked at companies like Bede,
RotorWay, Avian and others - wrote a paper about 'Propeller Drive
Systems and Torsional Vibration'. This paper influenced my thinking
about what engine/prop choices I have for my RJ.03 IBIS homebuilt
aircraft project in a major way.

After finding this information on the internet, I reckoned this
document deserves a wider audience. I decided to brush up the
formatting and take out numerous spelling errors, presumably caused by
some OCR process. Other than that, I did _not_ edit the document in any
other way.

Go to my IBIS homebuilt aircraft project website -
http://ibis.experimentals.de/ - go to the dowload section where you'll
be able to download "Propeller Drive Systems and Torsional Vibration".
Sorry, no direct download link here, due to some intermittent
deep-linking issues with my ISP.

Download it, read it, study it. Be informed! For my canard project,
I've decided to go for a direct drive solution.

cheers,

Hans
_____________________________
My homebuilt aircraft project
http://ibis.experimentals.de/