Re: Re: Test data & advise

From: Tapio Linkosalo <tapio.linkosalo_at_iki.fi>
Date: Thu, 22 Jan 2009 16:46:04 +0200

Warthodson_at_aol.com wrote:
>
>
> I wonder if super sport rubber might have a longer flatter torque
> curve? Maximum torque & energy are not an issue in low ceilings.
> Anyone have any data on these batches of rubber?
>






It does. I should have a pic somewhere...

Anyway, taking a motor of similar maximum stretch and force in a stretch
test (thus assuming similar breaking force of the rubber), the SS indeed
drops more quickly, but then retains the torque at a more constant
level, so that the final "knee" when the flat portion turns into final
descent, takes place a the same stretch and force. Yup, a pic would be
worth a thousand words.

Thus I also conclude that for limited ceiling height and non-VP prop, SS
might indeed produce torque within the appropiate torque range for a
longer period of time (albeit at the cost of slightly thicker motor,
thus higher motor weight to overcome the lower averall torque).



-Tapio-
Received on Thu Jan 22 2009 - 06:46:09 CET