For TSS I use this formula for max turns of a "broken in" motor.
break turns = 44.2 * Loop length *
loop length in inches = the initial loop length when tied not the length
after broken in.
TSS has about a 8-10% less stretch ratio so loops will tend to need to
be 8-10% longer to get equal turns.
Don S
On 4/27/2018 5:07 PM, cross.up_at_verizon.net [Indoor_Construction] wrote:
>
> After the comments on the 5/99 batch "program", I'm hoping you guys
> can shine some light on what I'm experiencing.
>
> After seeing the Hodson Wart A6 record was set with some 3900 turns I
> realize I need to wind more and better if I'm going to get to and past
> 6 minutes. When I first my first A6, a Stevens design I was given some
> "good" rubber by the guy stripping my FAI modeling purchased(in 2017)
> rubber. Because of many constraints including a 20' ceiling I spent
> more time trimming that try to pack on winds. Fast forward to this
> year and a 45' huge venue and I am needing a LOT more turns.
>
> So I find and load up Bill's 2010 data in Frash's spreadsheet and see
> I should be putting in 230 winder turns for my weight and lenght of
> rubber. Lubed with FAI lube, ArmourAll or Bill's fav, synthetic shock
> oil, I get the recommended max torque at 20 winder(15:1) turns and by
> coming in to the stooge and winding slowly I can get to 70 winder
> turns then BLAMMO!.
>
> I've tried and tried to no avail to do better. I have worked the
> rubber by working up slowly from 30 winds over 10 sessions, I've tried
> low initial stretch, Bills recommended 5-6 length initial stretch and
> nothing seems to make enough difference to matter. I get rubber
> batches vary and 2010 might have been a good year but shouldnt I
> expect more than 30%. The kicker is the last of the "good" rubber had
> no issue going to 100 winder turns and I have no idea how much more it
> could take.
>
>
--
Don Slusarczyk
Received on Fri Apr 27 2018 - 22:09:44 CEST