A poster on another forum asked about the performance differences between the 2 size motors:

Since the HV 550 motor has a stator and rotor magnet that are twice the length of a 540 motor, it will have twice the torque of an equivalent Kv 540 motor.

HV 4.5 550 (5000Kv)
Bal. 8.5 540 (5000Kv)

Therefore, if you are running two motors (one 540, one 550) with equivalent Kv in the same vehicle under equal driving conditions, the 550 motor will only have to work about half as hard and will heat up about half as much as the smaller motor.

I am responding to a racer (on RCTech) who burned up our Ballistic 8.5 in a 4x4 SC installation. Our warranty does not cover burnt motors or stators; but, both ROAR and 540 motor sellers (including Traxxas!!) promote the smaller 540 motor for use in the heavier 4x4 trucks.

Customers are really not happy with motor companies when their motors burn up.....:cry:

Companies are also not happy informing customers they're not getting a free motor/stator replacement....

I never burnt up a novak 540 but my 8.5 ran very hot in my 4x4 sct. Now I am running a 6.5hv and love how cool the motor runs. Might have to pick up the 4.5 for the outdoor season though. Any time frame for the ballistic 550's?

Since the Ballistic 550s use many of the same parts as our Bal 540s and our HV 550s, we are simply waiting for the black front end bells and some labels and we're good to go. The PRs can't be done until we can do photos/packaging with the missing items.

We have assembled a few 550 FrankenMotors from spare parts for visual samples and testing. This project became far more urgent with the 4x4 SCT interest...:yipi:

We will probably release three Ballistic 550 motors 4.5, 5.5 and 6.5. However, we can add additional replacement wound stators in the winds (Kvs) customers want. So, what do you think they will want? Any interest in 3.5 Ballistic 550 motor?

3.5 for me!

I'm not too crazy with the speedpassion one.

can't wait til my 540's burn up so i can order one of these ballistic's :lol:

We did not test a 550 3.5 in our 4x4 SCT testing; but, we will probably offer it as a replacement stator.

Any new info or time frame on these?? I gotta have it....

+1 hope pricing stays around 120 (slightly above a hv, but below a neu)

I'll check and see when we will release the Ballistic 550 product announcement. I think that the "street price" will be @119.99. We will also offer a Build-A-Ballistic 500™ program, similar to our other 2.

TeamNovak Build-A-Ballistic™

Brilliant! Perfect for the 1/10 4WD SCT class! I currently have the HV4.5 in both my SCRT10 and Slash 4x4PE. Looking forward to the rebuidable design and removable sensor harness.

We have announced the Ballistic 550 motors:

IT'S 550 OR NOTHING!

We will be adding a few additional wound stators in addition to the 7.5s. Any suggestions?

2500kv

Sounds like an 8.5 wind? We may also add a 3.5 wind.

We will also be offering a Build-A-Ballistic 550™ program.

Sounds good. I'll wait for both.

What would be the rated kV of an 8.5HV?