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2W20 + Wemotec 480

Old 02-11-2008, 01:23 PM
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Default 2W20 + Wemotec 480

Hello,

I need some help on my F-20 power plant. I have a

2W20
Wemotec Minifan 480
ESC Himodel Pro 60A
Lipo 4S1P 3.400 mAh - 20C (2 x 1700mAh - 20C - 7,4V)

I'have programmed the ESC as Carl recomended on his manual (Thank You Carl), and adjusted the gas range of my Cockpit SX.
How on earth am I getting 740 Grams thrust as initial peak (fresh batteries)??????????????????

Please help, I've been looking around and it's pretty far from what it should be..............

Thanks.

I've done some measurements with the HET Typhoon 2W20 with (not the newest) Kokam 4S3200, Tsumnami 30 (with increased heat sink) in a WeMoTec Minifan. In the appended diagram you will see:

Peak: 650W, 42A, 1175g ( 41.5 ounce)
Continues (after about 1 minute): 500W, 37A, 1075g (30 ounce)

Regards - Norbert
Old 02-11-2008, 06:32 PM
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Default RE: 2W20 + Wemotec 480

torecho,

It appears the problem is with you battery setup. You are using two 2S 1700mah packs in series to make a 4S pack, which is what it will do. When used in series, however, it is still a 1700mah 4S pack and not 3400mah. You either need to use two more 1700's in series, then parallel both sets to get a 3400 4S pack or buy a 4S 3200 or better pack. So, the 1700mah 4S pack you are using is only providing 34 amps to the motor and that seup requires a solid 50 amps to produce full power.

Carl
Old 02-12-2008, 05:51 AM
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Default RE: 2W20 + Wemotec 480

Thanks Carl. I'm retarded.
How much does your battery pack weight?

Thank You again.
Old 02-12-2008, 09:21 AM
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Default RE: 2W20 + Wemotec 480

MY 4S 3700 weighs in at 378 grams, or 13.4 oz

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