deltaforce 33 leopard

[fastblack]

hello

i have a df33 used too be powered by nemesis 540xl 1200kv 6s lipo x645 turnigy 180amp

now i have bought the leopard 4074 1400kv for it..

do you guys think the 4074 with 6s lipo and x645 will be too much prop?

what speed too expect?

[Brushless01]

Yep thats the perfect prop for that application It will fly !!

[fastblack]

df 33 leopard

just got some speed and logging today

df 33
leopard 4074 1400kv
6 cell lipo
x645
timing 7.5 degree

i did not have my packs fully charged when i gpsed it too 46mph/73,5kmph

120amps 2400watts

it was running on flat water and it was running a bit wet.

will try same setup but running it more loose with fully charged batts tomorrow.

the leopard motor was very cold! you could not tell it had been used...

[DISAR]

Thanks for the numbers, nice.
the turnigy 180a usually does not make mistakes in the lipo cut off if you set the exact number of cells. I think you should investigate why the lipo cutoff worked before you have any nasty surprises (like fire!). I don't think it is because of the deans (it is preferrable to change to bullets), it is because of
a) the lipos quality , Which lipos do you use?
b) cutoff - volt/cell set at?

[fastblack]

todays run

hello

i set the cutoff too 3volt per cell lipo, and that was the sollution, now it wont cut off, the previous datalogg numbers were incorrect, the numbers are:

leopard 4074 1400kv x645 6 cell lipo in df33

120amps 2400watts

this is the numbers every time i hit the throttle and surprisingly the 4074 is cold, i cant feel any heat.

but i still cant get more than 46/73,5kmph why?

i guess its my batteries they are 4000mah 25c so they are on the edge at 120amps. the datalogg shows 19.7volts when i have full throttle that is because i am on the edge on the c rating right? if i had maybe 35c batteries the lowest voltage would be 22volts you think ?

the boat feels real fast i can really tell the difference from the 540xl 1200kv.

maybe if i get som 30-40c batteries i will break 50mph..

[sharkbite]

If this helps any one.

I have a DF-33 to and i run the leopard 4074 2000kv and the 180 esc 50c/100c lipos.

m445-48.1mph
x640-41.9mph
40x52-41.4mph-3B
p220-40.2mph
x440-39.1mph
p215-37.8mph

[Brushless55]

That's awesome that your motor is staying so cold in this hull

[sharkbite]

40c batteries should do it. I like the thunder power batteries 45c/90c burst