Larger motors produce more torque.

a local indoor offroad track is letting 1/8 run on a tight track but is limiting voltage to 2s, so i was thinking of trying one of the new ballistic 550's in a rc8 to try to compensate, would this work?

From our testing the Ballistic 550s work great in 1:8 scale on a tight track on 2S with a standard 1/10 controller.

thanks!! just ordered a 5.5

Bob is winding both (550) 8.5s and 9.5s to get closest to the Kvs requested. I'll post the Kvs when he tells me.

Good to hear about the 8.5. What about the 3.5?

I'm pretty sure that we will have a 3.5 replacement stator for the 550. These are repl stators (only) that I am describing. Actually, we can wind a few of any wind, like we do with the 540s. We even offer "light" stators for the 540s; although. I'm not sure anyone has ever ordered one.....

I really wish kV/Turns were standardized, like;

(I know these are way off, but it shows what I mean)
2.0T=12,000kV
2.5T=11,500kV
3.0T=11,000kV
3.5T=10,500kV
4.0T=10,000kV
4.5T=9,500kV
5.0T=9,000kV
5.5T=8,500kV
6.0T=8,000kV
6.5T=7,500kV
7.0T=7,000kV
7.5T=6,500kV
8.0T=6,000kV
8.5T=5,500kV
9.0T=5,000kV
9.5T=4,500kV
10.0T=4,000kV
10.5T=3,500kV
11.0T=3,000kV
10.5T=2,500kV
10.0T=2,000kV

I know that each size motor would have different numbers, but you get my point...I hope.

That would simplify things, but I don't think it is possible. Different manufacturers have different Kv readings for the same wind motors now. All of our Kv numbers are unloaded, so you would also need to know whether all the different companies measure the Kvs the same.

So If I wanted to get a 9.5T Ballistic 550 I'd have to buy one of the other already available complete motors and the replacement stator? I guess I could sell the original stator, but I'm not too keen on having to do that.

We will also be offering Build-A-Ballistic™ 550s later; this allows racers to customize a motor to their own liking. We will not offer as many options for the 550s (as the 540s) because we do not have as many choices. But you will be able to select:

~ wound stator, wind/Kv
~ rotor, standard or tuning
~ stainless steel or ceramic bearing (I think)
~ sensor harness length

This will cost somewhat more than the ready-built 550s; however, not as much as purchasing a motor and an extra wound stator.

I can deal with that! Ballistic 550, 9.5T stator, slightly larger diameter tuning rotor, ceramic bearings. I bet that would be great in my buggy, can't wait to try one.

Bob asked me last evening just what you guys plan to do with the low Kv Ballistic 550s; so, I'm asking....:wink:

He has wound, and measured, 3 different winds (verbal info):

8.5 @2500 Kv
9.5 2250 Kv
10.5 2000 Kv

So, how low does the Kv need to be? He said it could be a 11.5 before the Kv gets under 2000

He will be emailing me the actual numbers, but these should be pretty close.

I'm guessing people want to get up to 4s+ in either 4x4 SC or try using these again in 1/8th buggies...

That was my guess as well.