SEN 2814 - all wound up
- Category: Archive 2021
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1. Prewinding and flyoff in shifts?
2. F1B answer is simple
3. Thank you Charlie
4. Don't get into a panic
5. Agree with Dino
Prewinding and flyoff in shifts?
From: Aram Schlosberg
If B fliers are confined to winding in their 7-minute flyoff window, then consistency requires that A fliers stretch out their lines during their 7-minute window and C-fliers fully refuel their models during their 7-minute window. An absurdity!
Currently, B-motors can be prewound but only ONE can be used. (Blown motors don’t count). As Mike Achterberg asks “What difference does it make how many motors are prewound”? The real onus on organizers is discovering that not all poles are manned by timers AFTER winding was allowed. So, prewinding is really an administrative issue.
Ideally B should have a double framed flyoff. Once all poles are manned by timers, a horn sounding will commence a 10-minute unlimited winding window. Exactly 3-minutes later a second horn will commence a flying window. At 10-minutes a third horn terminates both windows.
The real difficulty of large flyoffs is a systemic shortage of timers (particularly 6-minute flyoff when most fliers are clean), compounded by having an exceedingly long flyoff lines. Furthermore, the corner fliers on a very long flight line have a higher probability of maxing.
The flight line length and the demand for timers can be halved if large flyoffs are split into two SHIFTS. Let X% and Y% be the portion of maxed fliers in each shift. When X > Y, then ((X-Y)/2)% of the highest ranking sub maxed fliers in the second shift would proceed to the next flyoff carrying forward their time deficit.
For example, if X=90% and Y=20% then 35% of the top sub-maxed fliers in the second shift would continue. Overall, 72.5% would reach the next flyoff, 55% with full scores. And even with an unlikely X=Y=100%, a large flyoff in shifts is a more manageable and a fairer framework. ///
F1B answer is simple
From: Michael J Woodhouse
The F1B answer is simple. There are two options wind as many as you wish prior to the round start, however the timekeeper has to be available to watch. Or the simple way is no winding until the hooter blows. I always hook up before the fly off round and stretch and stretch again the intended motor, a spare back up motor has already been wound and is ready just in case. I'm out there ready to turn the handle as soon as the hooter blows. The stretching that I’m doing is this part of the winding process? Or is this stretching merely fake winding?
Thank you Charlie
Hello all. Thank you Charlie. So we can wind multiple motors. Finally got a accurate explanation for the process. Hope all are safe and well. Thermals, ( someday)
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Don't get into a panic
I was involved in processing the models at the 2019 WC. The final flyoff flight for F1B was flown on early Sunday morning of the day after all the previous F1B flights and two flyoff flights were made which was Saturday. There were 3 competitors for the final flyoff. All 3 wound their primary models prior to the start of the round. 2 of the competitors elected to launch their models within the first few seconds of the start of the 7 minutes. The 3rd. flier had his motor break just before he could launch his model. He put that model down and ran to get his 2nd. model which he wound while the clock was running. He got his model ready to fly and still had approx. 4 minutes left in the round. He elected to wait to launch that model until there was about 30 seconds left in the final flyoff round. That flier was very composed during a very stressful time and I was impressed in how he handled the situation. The bottom line is simple, you can get a lot accomplished in 7 minutes, if you stay composed and don't get into a panic mode. Charlie Jones was correct in how the contest was run.
Agree with Dino
I strongly agree with Achterberg's comments here. Otherwise, it becomes a
contest of winding motors rather than of flying the models.