Cezar Banks used the VP w/hinge, spring & stops to have highest single flite & 2nd overall to Jim Richmond who used a VD _at_ 1988 WC in Johnson city.
Cezar inducted to NFFS HOF in 2000 (Sympo 33). Believe better history in MOY featuring Cezar's developments in different Sympo.
Jeff Annis presented VP design in earlier Sympo but it had high friction of spar in tube and lacked stops and adjustments.
Indoor VP's using skewed hinges can be seen in prewar Zaic books. Similar concept used in some outdoor helicoptors.
We stand on the shoulders of giants!
H
To: Indoor_Construction_at_yahoogroups.com
From: tapio.linkosalo_at_iki.fi
Date: Wed, 7 Dec 2011 09:13:08 +0200
Subject: [Indoor_Construction] History of VP?
Who did invent / introduce the spring-loaded VP system to indoor flying?
A friend asked this during the Finnish Champs yesterday, and I had to
confess that I did not know. I recall seeing pictures of Joachim
Löffler's F1B (wakefield) hub from the 1960's, using that mechanism
where torque on one bar and prop on another produce the blade twist. The
first picture of an indoor adaptation I have seen is the Richmond (?)
drawing in INAV in the 80´s I think, but that seems to be a
well-established concept already, so the initial use has been before that?
-Tapio-
Received on Wed Dec 07 2011 - 00:54:37 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET