SEN 2245

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SEN 2245 – Table of Contents

  1. The Last Scene
  2. Looking for 5/99 rubber
  3. Magic NOS-36 timer for E-36 and F1S
  4. Hybrid and Overweight Motors

The Last Scene

The most telling story in the 2016 America’s Cup release is Roger Simpson’s last place standing in F1C. Typical of Roger, in Team Selection Meetings he would wait until everyone had his say and then announce his solution to a problem. The 75 minute accumulation rule stands out in my mind. In finality, he won that one-and-only contest over three others right at the end of the year. It didn’t just happen that way, He planned it that way, I’m sure.
Going for the last max of the last contest, he could be heard shouting “go you SOB”, or some such admonishment, above the din of an F1C engine while stretching vertically toward the heavens and 4″ off the ground, and then ——-lights out. Then can be heard in  a soft voice “over run”. RIP, Roger.
Gil Morris

Looking for 5/99 rubber
Would anyone out there with any 5/99 rubber you are willing to part with please contact me with quantity available and price. I have an indoor flier friend in need of some.

Tom Vaccaro   “

Magic NOS-36 timer for E-36 and F1S
A number of people have been asking about the Magic  E-36 Timer.

We have finished a new production run of the E-36 timer that has been out of stock for a few months. This will be available in a few days.  The timer is $65 and the optional RDT cable is $10 plus shipping.  Specify the length of the cable. Most people like a 75mm cable (about 3 inches). This cable has a slightly different format than those with the precious release.  Place your order with

Information can be found in the Magic Timers Web Site

Hybrid and Overweight Motors
Aram Schlosberg

1/16th  B motors have the advantage of a narrow length (within ½”), better coiling up of the motor towards the end of the wind and a lower impact of breaking a strand – relative to a 1/8th strand. Their main disadvantage is their stranding time: being twice the length of a 1/8th motor and the higher impact of nicks and imperfections in a 1/16th strand. And if one first ties the knot forming a large rubber loop (which has to be straightened out first) then every time the motor is taken off the stranding bench (two vertical poles on a wooden board in my case) the large loop has to be straightened out. (Each loop unwinds to one full rotation or twist.)

An alternative is to make hybrid motors. If the 1/8th rubber strip winds up to the desired motor length – you are done. But if it’s too long/short, then strip a 1/16th loop from the same segment (the rubber contained between two factory markings, made from a single mixing). Reduce the length of the 1/8th strip by half a loop in length, re-strand the shorter loop to the desired motor length and add a 1/16th loop to reach the desired weight. The motor will exactly match the length of a motor made from 1/16th rubber. (I’ve tried tying two short end loops at the end of a 1/8th rubber strip but found that the knots are under a lot of stress.)

Rubber strippers can be bought from Ray Harlan on The standard stripper is operated manually, suitable for small jobs like cutting extra loops. For larger jobs one should run the stripper with an (adjustable) DC motor. One should also consider an idler wheel add-ons that assures clean running of the stripper. (Contact Ray for details.)

I happen to have a number of 3/32nd rubber boxes that have lower energy/torque characteristics. With no juniors around, I decided to use this rubber exclusively for testing – making up motors with an extra loop. For example, if one strands a 3/32nd rubber with 17 loops, then adding an extra loop would produce motors weighing 31.23 gr (29.5 X 18/17). These motors are unwashed, lubricated and broken-in at 80 Lb. This way one can make full power test flights with inferior motors and not mix them with 1/16th contest-motors. The same applies to older/lower energy 1/8th rubber but adding a loop will produce heavier motors (31.76 gr  = 29.5 X 14/13.)

The beauty of making 3/32nd or 1/8th motors is that they don’t have to be straightened out every time one uncoils a motor (if you start making a motor by tying a large loop first.).///

Roger Morrell