HV-Maxx 4.5 or MM and 9xl?

[Patrick]

Originally Posted by Eccentric

They are supercharged 2.0l versions. Brammo sells them over here. They also have some neat projects of their own. You should check them out if your into 1:1 scale toys too.

I have heard of those motors, but nothing about them in Australia, but I haven't really looked. The only engines here that I know of that are called Ecotecs are the V6 3.8L engines that are in the 95 to 2003 (around those years) Holden Commodores (I have one in my 96 Commodore and it's a good all round engine). Holden is part of GM. There is a supercharged version of this engine as well.
Well that was probably some useless information for you, but anyway.
Oh yeah, HV-Maxx 4.5 or MM and 9xl?

[Serum]

Unbeleavable..

I deleted your post.

I don't think it was very necessary to start discussing 1:1 cars. If you disagree, feel free to PM me.

Great to know you know your stuff on 1:1 cars, but in this thread it was just useless information IMO. (not worth it, to use your words) Someone used an incorrect comparison, So what.. The point is clear.

[Serum]

@speedy 'especially if castle is releasing software to handle the novak motors?'

what do you mean by that?

and did you ever had a novak HV to test? or is the XL vs Novak HV only based on thing you read about it? because a real life test/comparison would be somewhat more fair, agree?

[SpEEdyBL]

Originally Posted by SpEEdyBL

When I posted initially, I was referring to what I have read over the past two years. I have never actually driven either an 8xl or hv. Also, im refering to the HV4.5 (4.5 turns), not the 4400 which is 6.5 turns and only actually has about 3100 kv.

but yeah, a fair test would be the best way to solve this dispute. Also, during the last few months, castle has claimed that they will release software for the mamba max to properly run the novak motors.

[suicideneil]

Hmm. What I should have said is a HVMaxx in a STOCK E-maxx is like the Atom (lightweight/high revs/small engine), and the XL motors are like the Ferrari (big motor/bigger car). Whatever. As for the HV KV ratings- that is what is stated on the Novak website, and that is what it says in my instructions- HV4400 has 4400kv. I doubt Novak cocked up their calculations, and I imagine thats why the introduced the 4.5 motor for more speed/shorter runs times, and the 6.5 motor for lesser speed and longer runtimes. Without speaking to Novak directly I cant say whether the 6.5 has more torque, but generally speaking I thought lower kv motors turned slower & had more torque- that seems to be the way XL motors work so it only makes sense that the HV motors work that way too? Could be mistaken though....

[Serum]

What is the problem with the mm running a novak? since it's a simple 2 pole motor?

are you sure this is not about the neu motors?

[suicideneil]

Might be something to do with the Novak being sensored- need a software updated to get around the sensor issue. Strange though, since I can understand a sensored esc not liking a sensorless motor, but t'other way around?..... I dunno.

[BrianG]

The sensors are totally seperate from the motor. Sensors aside, a BL motor is a BL motor. The only difference I can think of is that a sensored motor probably has shorter coils than a sensorless motor of the same length because of the extra room needed for the sensor section.

Basic rule of thumb is that a sensored ESC can only run sensored motors, but a sensorless ESC can run any three-phase motor (as long as the proper voltage and current ratings are observed).

[suicideneil]

I thought that might be the case, in which case the mm/novak software update issue may be to do with motor timing? In any case the HV motors are about in the same kv range (high kv at any rate), so should work well I reckon.

[RobK]

I can tell you from personal experience from having purchased the original HV4400 that it was difficult to keep cool in my modest Revo. Once I upgraded the rotor it was like a different motor--more powerful (modest amount), but it ran a ton cooler. I usually run this for about 40 minutes (8AH lipos) without it getting too warm on a tight track. Also, the KV numbers are misleading, because I had to gear down when I upgraded the rotor.

[BrianG]

What is the MM/Novak update? I thought the only issue was with the MM/Neu? AFAIK, the incompatibility is with the slotted rotors of the Neu. Is the Novak built like this as well?

[SpEEdyBL]

The software that I am speaking of is for those who want to run the novak velociti motors for 1/10 scale. The fact that it is sensored isn't the problem. The fact that the motors are wye wound and have steel stators is what causes them not to run smoothly with the MM and its current software. The HV motors are basically the same as the velociti motors, but with longer cans, so I assume the new software will do the trick for them just as well.

Suicideneil, again HV4400 does not have 4400 kv. I still have no idea how novak came up with those numbers. I know for a fact that the HV6.5 is the exact same motor as the HV4400, but with a sintered rotor and a ribbed can, and I know that my ss5800 powered xxx4 did not go 55 mph with 7 cells, because that is how fast it would have gone if the kv was really 5800. Even my feigao 380c 9t, which is rated at 4400 kv, was a tad faster than the ss5800 geared the same.

[suicideneil]

You seem very certain about that, but how could Novak cock up their specs like that? Just doesnt make any sense to me. Matters not though, I have my heart set on the new MGM controller & an 8xl- batteries is the only issue now = need lots of new ones since the 8xl will work best on 16 cells.
Novak really should bring out an XL can HV motor oe two, but they seem happy to cater to the stock size/weight users..... shame.

[SpEEdyBL]

Try and calculate the power of ss5800 using the advertised values (.45 oz*in/amp kt, 5800 kv) and you get more output power than input power (volts x amps). I wont go into the math now, but you see my point. sorry im in a rush. Ill explain why im brought this up initally later

[Serum]

Well; most likely novak gives their kvratings to an unloaded motor.