Help recommend a cheaper 1000kv motor

[brian015]

Originally Posted by Jahay

cheers linc... WOW didnt realise the 56 series were so huge!!! Lucky i didnt get one! No way would that have fitted, and even a 1717 would be a little tough!

I feel silly for asking this...

But if a 4082 leopard is the same size as a 1518 and smaller than a 1520. How would it be able to perform better than a 1520 on 9s?

I think i need a short explaination as to how Kv actually works... Wouldnt the smaller 4082 generate a lot of heat as it is such a small can?
Due to the length of the 1520 can, maybe it will be able to handle 9s quite well?

Thanks

Josh

Yeah, I think you're better off with the 1520 than the leopard 4082. You're trying to move a big, heavy truck - so the bigger the motor the better. The kv, to me, is secondary to the size of the motor - the right kv will allow you to use the appropriate voltage and gearing for your application.

If you can't run a larger diameter motor (like the 5682) then I think your best bet is the 1527 if it will fit.

[lincpimp]

Originally Posted by brian015

Yeah, I think you're better off with the 1520 than the leopard 4082. You're trying to move a big, heavy truck - so the bigger the motor the better. The kv, to me, is secondary to the size of the motor - the right kv will allow you to use the appropriate voltage and gearing for your application.

If you can't run a larger diameter motor (like the 5682) then I think your best bet is the 1527 if it will fit.

9s on the 1520 may be spiining that motor past its efficiency window, so it may get hotter than the 4082 on 10s running at a lower rpm.

Since he has the 1520 and lipos are now pretty cheap (compared to a few years ago) I think he can try the 1520 and see how it does.

He can pick up 2 5s packs and a 4s for testing. If he stays with 9s he can just buy another 4s pack and have 2 sets of batts for the truck, or sell the 4s off and get some money back if he sticks with 10s and another motor.

I do agree that the 1527 would be best. However that motor will cost more than the leopard and all of the lipos combined.

[brian015]

Originally Posted by lincpimp

9s on the 1520 may be spiining that motor past its efficiency window, so it may get hotter than the 4082 on 10s running at a lower rpm.

I agree that the 1520 on 9s or 10s may be too much. I guess what I'm saying is that I'd go with the biggest motor that can fit (since this is a big truck that needs a large motor) and then choose the appropriate voltage and gearing. Rather than deciding on a voltage first (9s-12s), all of the factors (kv, voltage, gearing) need to be considered. So I might go with the 1520 on, say, 6s-8s over the 4082 on higher voltages.

[lincpimp]

Originally Posted by brian015

I agree that the 1520 on 9s or 10s may be too much. I guess what I'm saying is that I'd go with the biggest motor that can fit (since this is a big truck that needs a large motor) and then choose the appropriate voltage and gearing. Rather than deciding on a voltage first (9s-12s), all of the factors (kv, voltage, gearing) need to be considered. So I might go with the 1520 on, say, 6s-8s over the 4082 on higher voltages.

I think the leopard 4082 1000kv on 10s and the 1520 on 6s would be comparable power output.

Now the leopard 1250kv 4082 on 10s might have an edge over the 1520 on 8s. Not sure, probably be close.

Given his setup i would go with a 1717 motor on 7-8s. The power output of a 1717 is somewhere between a 1521 and 1527 neu. The 1527 would still be the best fit, and would allow for lower motor speed and a larger pinion to help with gear wear and overall durability.

A good setup would be the leopard 5682 910 kv motor. Large diameter so lots of torques and 33k rpm on 10s. Slightly shorter than the 92 motor so not as huge power output. Might be able to get the motor far enough from the spur as larger pinions would be used to make up for the slower motor speed...