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Old May 16, 2015, 05:26 PM
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I have a test on a FMS F4 with a 70mm EDF 8blade.
My battery only gave 13.59V, somewhat low for 4slipo.

Motor FMS 2845-3000, 69A, 938W, 4s2440, 35c.
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Old May 18, 2015, 12:08 AM
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Ive got a 8 blade in my habu2. 4 flights so far. Sounds good in the air.
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Old May 18, 2015, 04:45 AM
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Quote:
Originally Posted by manuel v View Post
I have a test on a FMS F4 with a 70mm EDF 8blade.
My battery only gave 13.59V, somewhat low for 4slipo.

Motor FMS 2845-3000, 69A, 938W, 4s2440, 35c.
I am using two FMS 8B fans in my ME262. Amp draw settles in at 52 amps each using two 3.3 4s 50c pacs. It took me a while to get these balanced but they are sweet fans with a decent sound. Not as whooshie as 12 or 14b but a lot better than the 5b fans.
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Old May 18, 2015, 01:23 PM
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My reading 3slipo is very consistent with the 4s.
I'm really surprised, this fan 8b, motor load almost like on 12b fan


Inside plane.
4s2450, 35C, 69A, 13.59v, 938 watts.
3slipo. 45.13A, 10.41 volts, 470 watts.
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Old May 18, 2015, 01:35 PM
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Quote:
Originally Posted by bps View Post
I am using two FMS 8B fans in my ME262. Amp draw settles in at 52 amps each using two 3.3 4s 50c pacs. It took me a while to get these balanced but they are sweet fans with a decent sound. Not as whooshie as 12 or 14b but a lot better than the 5b fans.
Are they giving the same thrust to watts as the 10 - 14 blades fans?

tia
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Old May 18, 2015, 02:16 PM
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erh7771.

I have not tried, but I hope that is within the standards. Input 1000W, for 1450 to 1650 grams of thrust.
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Old Yesterday, 03:45 AM
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Does someone have a idea for a 4s setup and ca. 2kg thrust and ca. 1200watt? which motor should i choose?

regards
Chris
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Old Yesterday, 04:39 AM
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I am not sure if it's possible, with realistic current (amps), to achieve 2Kg.

I got near 1.9Kg with a Cyclone Power 3300kv outrunner at 98amps.

The HET 1W-40 is another option.

Your best bet however is to go 5/6s.
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Old Yesterday, 05:16 AM
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1W40 will do it, I tested it on 4s, when I get onto the regular PC will look up the figures, it was around 96 amps or so from memory.
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Old Yesterday, 02:04 PM
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I got 6lbs+ @ 220 mph on a 65c 5s CS12 1W40 on my Ergo! Got it into the 180's
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