Re: Re: Double strand motors?

From: Phedon Tsiknopoulos <phedon21t_at_yahoo.com>
Date: Wed, 4 May 2011 14:39:18 -0700 (PDT)

THE PROBLEM IS SO PROFOUND THAT EVEN THE CRAY SUPERCOMPUTER MIGHT BE PITIFULLY
INADEQUATE.




________________________________
From: highaltitude <cgrain1_at_yahoo.com>
To: Indoor_Construction_at_yahoogroups.com
Sent: Wed, May 4, 2011 2:18:45 PM
Subject: [Indoor_Construction] Re: Double strand motors?

 
The built in "Cray supercomputer" embedded in my brain says you may get more
initial power but in the end less time, however that computer is about as
reliable as a HAL-9000. I use muti strand braided motors on my P-30 and muti
stranded unbraided on my Coupe and the power is great, but they only run for 25
seconds. I will be at Lakehurst next week and am stripping some rubber to do a
side by side comparison test with the same date rubber and same cross section
with a loop and strands and will get back to the group

--- In Indoor_Construction_at_yahoogroups.com, "John Kagan" <john_kagan_at_...> wrote:
>
> --- In Indoor_Construction_at_yahoogroups.com, Phedon Tsiknopoulos <phedon21t_at_>
>wrote:
> >
> > But you do not fly by stretching, you fly by winding. As the strands are
> > stripped finer the cross section of the motor in question assumes a more
> > perfectly cylindrical cross section as opposed to a rectangular one, which
>will
>
> > develop higher torque since it's further away from the neutral point. Ciao,
> > Phedon.
> >
>
> Theory is useful, but in this case empirical evidence is what really matters.
>
> People have tried all kinds of things that *should* improve times. Some
>actually do.
>
> I agree with John B. here - my own limited testing of multi-strand motors, and
>discussion with others who have tried them, have not shown any significant
>improvements (as opposed to things like variable geometry props, which dow show
>significant improvements).
>
> That doesn't mean there aren't improvements to be had with multi-strand motors,
>and it doesn't mean people shouldn't experiment if they are so inclined.
>
> Mark Benns might chime in (or not). He's the latest one I've known to try them
>in his F1D program. I believe he has put them aside because he was experiencing
>a higher than normal breakage rate.
>
Received on Wed May 04 2011 - 14:39:24 CEST