New test lightning+1930+4S 4900

[virusss]

And with 1940 the amp surge is not too much?
1930 already pull 120 amp of my batteries

[nieles]

Originally Posted by virusss

Yes capt i have a regular motor, but for 4s i suppose 2600 Kv is ok, 2600*14.8=38480 Rpm, the gearin is the smallest i have my smallest pinion is 12 and the kyosho spur is 44.
I have a 1940/8, but 1960 Kv is not too slow for 4S???
1960*14.8= 29000 Rpm

for gearing down you have to put in a bigger spur or a bigger pinion

i dont know if you have a 46 tooth spur, but you can try that

[Sylvester]

Originally Posted by virusss

And with 1940 the amp surge is not too much?
1930 already pull 120 amp of my batteries

It will pull more amps, but your batteries are well capable of that.

You may even get more runtime, maybe similar, since ;

1930 / runs hot, pulls less amps
1940 / runs cool, pulls more amps..

You will have more sufficient torque with the bigger motor.

[virusss]

The video
http://www.brushless-italia.it/stadium.rar

[Sylvester]

Downloading now.. How long is it?

[virusss]

6-7 minute

[Sylvester]

Sounds good! :)

[Serum]

Viruss; what does the voltage of the pack does at the 120A load?

What i would do;

get a heatsink and a fan for that motor, it will bring the temperature down with about 15-20 degrees. you can get a 46T spur, which will help keeping it cooler too.

[Serum]

No wonder that motor is HOT.. with that driving, it is asking for a hot motor LOL..

it's fast Ettore! very fast.. Did you changed the oil in the centerdiff?

[virusss]

heheh, I wanted to push to bottom the setup...
The spur 46 dont fit (touch the chassi), my runtimes is 15 minute with on-off trottle :)
The graph is http://www.brushless-italia.it/data.rar
The oil in the centerdiff is 30000

[Sylvester]

Just watched the video.. Damn man you were pushing that thing! :) If you want you could just try the 1940 for kicks..

[virusss]

:) i like this truggy, and i love this Flightpowers battery

[Sylvester]

Looks like she handles well, what servo were you using?

[virusss]

The servo is Tower pro digital (chinese servo, but works very well)

[Serum]

Yeah, fast little bugger, that servo..

Ettore; can you get me the data saved with the eagletree? i can't read the voltages from that picture.. Thanks!