Re: Re: Approaching the new rules from a design standpoint

From: William D. gowen <wdgowen_at_gmail.com>
Date: Thu, 17 Apr 2014 10:34:17 -0400

Although I only fly toy model airplanes I totally agree Mike. I hate
wing twist.

On 4/17/2014 7:00 AM, mkirda_at_sbcglobal.net wrote:
>
> As am I, Kang.
>
>
> Strength wise, one could easily build a 0.012" thick motor stick that
> could handle the tension. The issue is the twist - I don't think
> anyone could launch a model with wing twist approaching +1.5" left and
> minus 1.5" right.
>
> If there is a method, please share! I've never figured it out. Mine
> just dive right and into the ground they go. You can easily see the
> covering get forced down on the right wing due to the aerodynamic
> forces after launch. Burn off a few turns to a lower torque and the
> twist is reduced enough to make the model launch-able. I could add a
> lot of incidence to the wing to help, but this comes at a cost at
> other parts of the flight, I.e. Cruise.
> This is the reason why I think less torsional twist is desirable. The
> only way I can think of doing this easily is by going to thicker wood
> or larger diameter motor sticks.
>
> Someone has told me I'll take all the wing wash I can get, even going
> to lower diameter motor sticks to get more. I don't know how he can do
> this without diving in to the right when launching at extremely high
> torque.
>
> Regards.
> Mike Kirda
>
>
>
Received on Thu Apr 17 2014 - 07:34:21 CEST