We now have HV 550 motors in our store for use in the 4x4 SC vehicles. ROAR has determined that only 540 size motors will be legal when competing in ROAR-sanctioned SC races.

Many SC racers, especially here in CA, seem to prefer using the 4.5T HV550s. So we have added this item back into the store with a new description and listing:

HV4.5 Short Course 550-Size Brushless Motor -- 2S

You still have the words "electric 1/8th-scale" in that listing. I thought you were going to discourage use of the HV4.5 for electric 1/8th scale because of all the people burning them up in that application.

Good catch!! The burning up occurred in racing, but I want to have these references edited. We are going to add a disclaimer to all of our old product listings that include the HV 550 that the motor can not be run in ROAR-sanctioned events.

I tried to make the distinction between "using" these products in 1:8 vehicles and "racing" them. Customers will continue to install these products, and many are using them sucessfully in certain 1:8 events; we want to make it clear that they should not be raced (and cannot "legally"). The 4.5 set-up was the primary problem so we removed it from distribution.

Here's what I'm curious about, why state that the 4.5 can only be ran on 2s now? Just a couple months ago you were selling it as a 4s motor. I can understand kicking it back to 3s. But the 5.5 is still being marketed as a 4s, and it's rpm's would be around the same as the 4.5 on 3s. So it seems you are now being cautious to a fault. It also seems that it was the esc that had a much higher failure rate with the 4.5, then the motor itself. Does this play into the 2s rating?

I'm gonna try the new SC HV4.5 motor with my old GTB ESC. Anybody see any problems with that? I will be putting this in a Slash 4x4 PE. Not sure what pinion to start with - a 12 maybe? This would be for racing on a fairly large track. I need to stay up with the Jammins running the 4.5s.

Gotta try something - the Velineon with a 16 pinion comes off too hot when trying to stay up with the HV4.5s. Normally low 190s after 5-7 mins - can't even run any practice :oh:

the 4.5 HV hits 74K+ RPMS, most motors would not be able to take that for extended periods of time...

teh 4.5 sounds like a jet engine on 4s, throw in some worn down 32p gears and it just sounds nasty:bad:

My 4.5 has never had any trouble on 4s. It is the smaller shaft, but I've had it for over 2 years, it has always performed flawless. By the time you throw a load on the motor, it's much closer to 4000kv. I think what people don't think about is the smaller rotor does not create the same forces as a larger rotor motor would.

No problem running the HV 550 with our GTBs on 2S; in fact, the system we OEM for the Ofna 4x4 is comprised of our Havoc Pro and our HV 4.5 motor. The Havoc Pro is an upgraded (software) version of the GTB, with the same on-resistance as the older escs.

You could always run the HV motors with our GTBs on 2S---we just never promoted this use.

I'm not sure what all factors played into our decision to take the 4.5 systems out of distr. Once 1:8 racing began, it was obvious that the 4.5 systems were the most problematical (and the most popular...)

Racers who know how to set up their equipment for 4S usage have gotten many years of use out of these products; however, guys that don't take the time to set-up/use it properly create the most criticism and complaints. Telling customers that they are "boneheads" isn't an option....:lol:

So, in re-launching the HV 550 for 2S short course (4x4), we only emphasize this new use. If any of you have been following the ROAR thread on RCTech (Off-Road), you can read just how Novak is getting the cr@p beat out of us for even offering this 550 for the 4x4 trucks---ROAR has ruled that only 540 motors are legal.

I have read the section on rctech. Just glad that my track doesn't restrict us to the smaller motors in mod sct. Hopefully they will change the rule soon as they did with almost every rule that was first listed for 4wd sct.

540 motors in race conditions with a 6+ pound truck. :neutral: Really just asking for burnt up motors unless you gear way down.

I for one didn't think I would ever buy an hv motor again but they are perfect for 4x4 sct's. I am running a 6.5hv now for a small (75x45) track and will probably get a 4.5hv for the outdoor season.

If we can only wait long enough......:party:

...it gets popular.

We took our Sentry Data Loggers out of distr and lately have seen a resurgence in their popularity, for use with timing escs. It was just before its time!

Years ago we developed the Pit Wizard---hand-held programmer for the Cyclone escs. It was pretty much a flop! Or, again just before its time!

What's the difference between the existing HV motors and the new Ballistic 550 motors?

ballistic motors have replaceable stators. they are also easier to adjust the timing on the endbell.

So your saying the Ballistic 550 will just be a longer version of their 540 Ballistic motor?

yeah a 550 is just a longer can.