Re: RE: Rubber comnparison

From: Jake Palmer <82.jake_at_gmail.com>
Date: Wed, 12 Feb 2014 15:58:15 -0800

I'm not sure it's the best method, but I have been comparing by graphing
the torque of motors at specific intervals as I unwind. I start by making
motors of the same length and weight (usually around 9"). I wind a couple
motors from each batch until they break to determine max torque. I then
wind to a set percentage just below max (can't remember off the top of my
head) and document the torque at intervals as I unwind the motor. I can
then make a graph and calculate area under the graph.

It doesn't give any kind of absolute numbers that I can compare to others,
but I can compare batches against each other. In my testing it's shown why
5/99 is so good. The other batches I've tested (8/93, 2/99, and 1/12) all
have much lower cruise and descent torque which is where the model spends
most of it's flight. 1/12 does have very high peak torque, but using all
of it is very difficult.


On Wed, Feb 12, 2014 at 3:35 PM, <mkirda_at_sbcglobal.net> wrote:

>
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> Has anyone ever published a good testing method?
>
>
Received on Wed Feb 12 2014 - 15:58:16 CET