RE: SS rubber [was: F1Open new world record] [1 Attachment]
Thanks Tapio, I really appreciate the insight. Looking forward to building my first "Micro-B" EZB for our Cat II site here in Oregon, USA. Good luck with your efforts. James L. Alderson
> To: Indoor_Construction_at_yahoogroups.com
> From: tapio.linkosalo_at_iki.fi
> Date: Wed, 7 Sep 2011 09:35:44 +0300
> Subject: [Indoor_Construction] SS rubber [was: F1Open new world record] [1 Attachment]
>
> On 6.9.2011 23:08, James Alderson wrote:
> > Awesome news! But the note on "TanSS June '09" really got my
> > attention. Are some batches of SS apparently much better than I have
> > been led to believe? Any info. is much appreciated.
>
> Some batches are better, but they are not up to the level of the best
> Tan II. The big picture seems to me that around 2004 SS was good, then
> the energy return dropped to be revised in the recent years.
>
> In F1D Euros, the Czech team used SuperSport, to make flights over 30
> mins. I suppose the lower energy return reduces the duration a little,
> but then again, different energy return pattern (higher initial peak
> then more consistent torque) could be used for benefit? In any case I
> suppose the comparison between Tan and SS will flip over in a couple of
> years, as F1B guys already report giving up using Tan as the motors fail
> in an unpredictable manner. If your wound motor bursts while you are
> waiting for the lift during the flyoff (only 10 min window for flight),
> you are in trouble - better sacrifice a few percent of rubber energy
> output in favor of being able to pick the best air to fly. I suppose we
> will start seeing Tan motors burst in flight in indoor classes too, shortly.
>
> I attach a picture of the energy returns of my F1B motor tests with the
> stretch method.
>
>
>
> -Tapio-
>
>
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Received on Wed Sep 07 2011 - 05:24:26 CEST
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