Subject: Hartzel Prop
From: ACRE NL
Date: 11/15/2002, 8:47 PM


   Hi Chrissi
   It is hard to compare apples to oranges as my coot a completely
different bird but most coots are flying with IO-360's with Hartzel
props and we are a dead match for water takeoff, however I do cheat
and use nitrous for about five seconds and cruise speed is a match
and I have better high altitude performance but they do beat me on
the climb out.
  I run a 13b naturally aspirated with a 5 blade warp drive and I know
that prop wont work well at high speed but I think with a good fixed
pitch prop on your turbo motor you should leave them in the dirt.

  Ken Welter

Dear Ken,  Love the pix of your plane, even the DeadHead sticker. I miss the
west coast.
We are well into our propellor building fixtures, pictures coming in the
future. We designed and welded up a large FLAT triangular table for
laminating  the cores for 3 blade props. We have also built a clone of the
Genini Propellor Duplicator, a router pantograph for first transferring
station profiles to a master blade pattern and then copying the master blade
pattern onto the laminated blanks. Given the unknowns and variables it just
seemed simpler to set ourselves up to be able to build our own props per
Nigel Fields techniques for wood/composit props.
...Chrissi

Cozy Mk-IV 13B Turbo
www.CozyGirrrl.com
Chrissi@BlueMountainAvionics.com

 
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