Thoughts on multistar 4s 10,000 on e300 propulsion f550

[RobBurn]

I was waiting for some 8000 4s 30C to come in and i saw this (see below) and its like $68 and the weight is only 804g. I know its 20C and ive been using 30C but with the e300 and the 15 amp esc i think the 20C would suffice.

has anyone used these on a f550 or something close? Any feedback on the company good or bad would be appreciated.

thanks


Multistar
Minimum Capacity: 10000mAh
Configuration: 4S1P / 14.8V / 4Cell
Constant Discharge: 10C
Peak Discharge (10sec): 20C
Pack Weight: 804g
Pack Size: 160 x 65 x 36mm
Charge Plug: JST-XH
Discharge Plug: XT90

 

[38super]

I use a maxamps 9000 mahxl 4s 100c on my F550, gives me bout 17 or 18 mins of flight time with E300 . They are very expensive and heavy ,about 60g more. Power is as strong at end of flight as it is at the start. If I were to do it over I would get the 6000 mah . It did seem to work better with the Grupner 10" props ....would take off like a rocket even with all that weight ... Gopro .gimbal and mount
The 550 is about 2700g... With the E300 system not as responsive because I think the props have too much flex in them but do get better flight time and it does come down smoother . I am going back to my Grupners . I would rather have the strong feel and control I get with them rather a min or two of flight time

 

[gtranquilla]

There are plenty of warnings in MRF to avoid the 20C batteries for any VTOL aircraft... in this case the MRs. Even with 2 batteries in parallel one should remain with 25C or a bit higher and not use 20C IMHO.
Using eCalc will help to determine at what point one has entered into the realm of "laws of diminishing return"!
It's a law of physics thing where one is no longer in "the sweet spot" with respect to the tradeoffs between max battery size, prop size, motor size etc. relative to the MR total AUW.

Using 65C batteries is also a mistake IMHO - because one is then carry unnecessary extra dead weight.

 

[RobBurn]

Thanks for the input, im still on the sidelines. Its funny if you read the sales page it is targeting multi rotors. Ill probably keep waiting on the 8000 4S 30c's. The 5000 4s 30 zippy's ive been using have worked well, giving me a constant 12 min. I have it stuck in my pea that 15 min will be good for me overall

Rob

 

[fltundra]

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