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Aug 13, 2019, 08:47 PM
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Here are combat scores for August 13th. Only 6 more weeks of regular combat and then we host the combat challenge at Quarry Field on September 29th to close out the season.
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Aug 14, 2019, 04:54 PM
My dog ate my airplane
Thanks guys for having me again at Tue night combat, it was great fun once again, as always!
Aug 20, 2019, 08:46 PM
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Here are combat totals for August 20th, 2019. Only 4 weeks left. We will have to start right at 6pm each week to finish before dark now. We welcomed EAA Chapter 41 tonight at Quarry Field.
Aug 27, 2019, 07:54 PM
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Here are combat scores for 8/27/2019!
Sep 03, 2019, 08:24 PM
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timflight1's Avatar
Here are scores for September 3rd (yes September). Nice flying tonight Jim! We only have 2 weeks remaining and then the combat challenge on Sept 29th so for Sept 10 & 17 combat will begin at 5:30 pm to ensure we can complete rounds before the sun sets. If anyone is running late, just let someone know and we will wait on you.
Sep 10, 2019, 08:41 PM
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Here are the combat scores for 9/10/2019. Only one regular Tuesday night to go and next week we will begin around 5:30 pm for any spectators. Then we wrap up the season with combat challenge on Sunday, September 29th. See flyvam.com for details.
Sep 17, 2019, 07:59 PM
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Here are combat scores for 9/17/2019. This concludes the 2019 combat league/season. However we still have the VAM combat challenge on September 29th. Be sure to sign up on the flyvam.com website but of course you can sign up on day of the event as well. It was a great year and we managed to fly every single week without any weather cancelations, etc. We will see you all again next year!
Sep 29, 2019, 04:55 PM
Heath

VAM Combat Challenge 2019


Despite the windy and damp conditions and a short rain delay, we were able to fly all eight rounds. Lots of aggressive flying and cuts!

Scores:
Heath: 3060
Mickey: 2106
Jeff: 1817
Andy: 1516
Tim: 1287
Payton: 1274
Josh: 1200
Mark: 778
Jim: 735
David: 160
Bob: - 82
Pete: -800

The final event for the year is next weekend in Greenbay:
Sunday, Oct. 6th. 6 rounds E-1000. Lunch break between classes.
Registration opens at 8am. Pilots meeting 9:30 am. The action starts at 10 am.
Feb 21, 2020, 09:22 AM
My dog ate my airplane
Heath,

I'm working on a front motor Mini Arrow build to play around with, and I want to try a lower KV motor I have and was just wondering if there's a target amp draw that you have to get 5 minutes of full throttle flying from the 1000mah 3s batteries? Or probably better yet, what is the math to figure it out, as I have a few motor options I can try. Thanks for any assistance with this.

Scott
Feb 21, 2020, 12:58 PM
Heath
Quote:
Originally Posted by sredlin
I have and was just wondering if there's a target amp draw that you have to get 5 minutes of full throttle flying from the 1000mah 3s batteries?
Simple answer: Amps when measured on the bench with a charged battery:
Conservative 10 amps, aggressive 12 amps

The math:
battery capacity in amp hours / flight time in hours = target average amp draw
Conservative: 1 amp hour / (6 min / 60 min) = 10 amps
Aggressive: 1 amp hour / (5 min / 60 min) = 12 amps

Things to remember:
Rule of thumb for this use case is to add 30 sec extra run time to the bench test.
Amp draw will be slightly less for a plane in motion vs a static test. Also the amps used will decrease as the battery voltage drops giving us a slightly lower average amp draw.

Your battery must be able to supply a full 1000mah before low battery cutoff and you must be willing to discharge it to battery cutoff. If your "1000mah" rated battery can only supply 900mah before low battery cut off or if you only want to use 80% of the battery capacity you need to adjust the capacity in the formula.
Feb 21, 2020, 03:33 PM
My dog ate my airplane
Thanks Heath, that's very helpful information, I'll probably aim for a 10 amp draw with the lower KV setups I have and see how it goes? I don't really have a group to do combat with here in San Diego and I mostly fly in small local parks, which are not conducive to burning through a battery at full throttle the whole time. But I'll experiment, and maybe find something that works okay for my next visit to Appleton this summer? I have a few friends here that play with R/C wings and they're also desert rats in the winter time, so maybe I can convince them to do a little combat out in the desert sometime for better testing? Thanks again and we'll see you this summer sometime.


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