[NSRCA-discussion] Pull-Pull

[Dean Pappas]

Hi Jay, 
The reason, that dates back from the mezolithic era (maybe the early
'80s) was that rudder pushrods bowing under G load caused loop trim
problems.
It mimicked a heavy wingtip problem!
That's what drove many of us to pull-pull in the first place.
We quickly discovered that the bottom rudder hinges took a lot less
beating with pull-pulls
because air loads were always trying to pull the hinges out of the
tailpost with one direction of rudder deflection,
and that control authority was improved compared to the "push"
direction.

Yes, I have tried pull-pull on the elevators, and I like it.

Dean

Dean Pappas
Sr. Design Engineer
Kodeos Communications
111 Corporate Blvd.
South Plainfield, N.J. 07080
(908) 222-7817 phone
(908) 222-2392 fax
d.pappas at kodeos.com

>  -----Original Message-----
> From: 	nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org]  On Behalf Of Jay
> Marshall
> Sent:	Wednesday, January 10, 2007 7:37 AM
> To:	NSRCA
> Subject:	[NSRCA-discussion] Pull-Pull
> 
> Why are rudder controls pull-pull and elevator controls push-pull?
> 
> Jay Marshall
>  << File: ATT311670.txt >>