Anyone use this motor?

[Interceptor]

Tacon 540XXL 2858 Brushless Motor 1200KV for 1/10 Remote Control Rock Crawler

Looking to pick one of these up. my esc is a SV2 and its going in a Losi Comp Crawler. There is a note that its won't fit, but I don't see why it wouldn't, there is a Titan 550 in it now, and that thing is huge.

[Solitaire]

For a few bucks more, you can get a true 540 (3650) motor. This may work fine, but it's really only a 2850 sized motor in a 3660 can. A lot smaller guts and you'll likely be cheating yourself on available power.

[Interceptor]

So one like this: Tacon 3650 Brushless Motor 3200KV for 1/10 On-Road RC Car

Sorry for the questions but I don't know how brushless motors are rated. They were just coming out when I was in this last time and had to quit for a while.

[Duuuuuuuude]

I run a Tacon 2230kv motor in my sc truck. Love it. Plenty of power and runs cool.

But yeah, if its got fins machined into the side of it, internally its a smaller motor.

[majatra]

Originally Posted by Interceptor

Sorry for the questions but I don't know how brushless motors are rated. They were just coming out when I was in this last time and had to quit for a while.

Here's a rundown on what I know of how brushless moors are rated; I hope it helps.
Like the first motor you originally asked about, a lot are rated by the dimensions of the motor cans in metric, and in this case its the 2858 which means its 28mm in diameter and 58mm long. It should be called a 380xxl not a 540xxl as Hobbypartz calls it.
It looks like you already know about the 540 and 550 size ratings, but their respective sizes as above are 3650 (36mm diameter and 50mm long) and 3660 (36mm dia. and 60mm long) and a 380 would be 28mm diameter and 45mm long, so this 2858 motor would be a longer 380.
There are bigger motors, like 3665, 3674, 4068, 4082, 5692 and so on, but they're definitely too big for your application.

Then there is the way Neu/Castle rate motors, which is by motor can diameter and rotor length in tenths of an inch. So a Neu 1415 is 1.4" in daimeter (actually 1.43" or just over 36mm) and the rotor is 1.5" long (I don't know if that's rounded off too, but that's 38mm) and the can itself is 2.75" long (or 70mm) so that would equal a 550L or a 3670 motor in size.

There are other ratings on the motor, but these are pretty much standard across all manufacturers. I'm referring to the kv rating, which is the rpm generated per volt. This should be measured at no load and with no advanced timing. This is the 1200kv and 3200kv from the two motors you mentioned. So with the same voltage, the 3200 would be about 2.6 times faster with the same gearing.
Then there is motor turns, which is just like brushed motors where the lower they are the faster the motor but lower the torque. But you will also see Y and D, like 1.5Y and 1.5D where they represent that the motor is wound in either a star (Y) or delta (D) configuration. This usually also means the motor has more that 2 poles, as 2 pole motors often use a Y-equivalent turn if wound in delta.

I'm getting long winded here, but there's a lot to it. There's also sensor vs sensorless too, but you've got an SV2 so there's no need to get into that.

If you're still interested in a Tacon motor and the 550 Titan has lots of room to spare, I'd recommend a lower kv motor than what you listed the second time to get more torque, like this Tacon 3660-540L-20T Brushless Motor 1200KV for 1/10 Car Trucks
If you're tight for room, then this one Tacon 3650-540-32T Brushless Motor 1100KV for 1/10 Car Trucks
The bigger 3660 will give you more torque.

[Charlie-III]

Originally Posted by majatra

Here's a rundown on what I know of how brushless moors are rated; I hope it helps.
Like the first motor you originally asked about, a lot are rated by the dimensions of the motor cans in metric, and in this case its the 2858 which means its 28mm in diameter and 58mm long. It should be called a 380xxl not a 540xxl as Hobbypartz calls it.
It looks like you already know about the 540 and 550 size ratings, but their respective sizes as above are 3650 (36mm diameter and 50mm long) and 3660 (36mm dia. and 60mm long) and a 380 would be 28mm diameter and 45mm long, so this 2858 motor would be a longer 380.
There are bigger motors, like 3665, 3674, 4068, 4082, 5692 and so on, but they're definitely too big for your application.

Then there is the way Neu/Castle rate motors, which is by motor can diameter and rotor length in tenths of an inch. So a Neu 1415 is 1.4" in daimeter (actually 1.43" or just over 36mm) and the rotor is 1.5" long (I don't know if that's rounded off too, but that's 38mm) and the can itself is 2.75" long (or 70mm) so that would equal a 550L or a 3670 motor in size.

There are other ratings on the motor, but these are pretty much standard across all manufacturers. I'm referring to the kv rating, which is the rpm generated per volt. This should be measured at no load and with no advanced timing. This is the 1200kv and 3200kv from the two motors you mentioned. So with the same voltage, the 3200 would be about 2.6 times faster with the same gearing.
Then there is motor turns, which is just like brushed motors where the lower they are the faster the motor but lower the torque. But you will also see Y and D, like 1.5Y and 1.5D where they represent that the motor is wound in either a star (Y) or delta (D) configuration. This usually also means the motor has more that 2 poles, as 2 pole motors often use a Y-equivalent turn if wound in delta.

I'm getting long winded here, but there's a lot to it. There's also sensor vs sensorless too, but you've got an SV2 so there's no need to get into that.

If you're still interested in a Tacon motor and the 550 Titan has lots of room to spare, I'd recommend a lower kv motor than what you listed the second time to get more torque, like this Tacon 3660-540L-20T Brushless Motor 1200KV for 1/10 Car Trucks
If you're tight for room, then this one Tacon 3650-540-32T Brushless Motor 1100KV for 1/10 Car Trucks
The bigger 3660 will give you more torque.

Excellent post! I learned a few things from this, although I am not a brushless guy, but worthwhile none the less.

[Duuuuuuuude]

Originally Posted by majatra

If you're still interested in a Tacon motor and the 550 Titan has lots of room to spare, I'd recommend a lower kv motor than what you listed the second time to get more torque

He's driving a Losi, he's gonna need some speed out of the motor he picks.

[Interceptor]

Great informartion. Thanks alot guys.

[SMR 510RR]

I bought one of those tacons just to try...Waste of money! The power is actually decent but the lack of low speed control is horrible and makes crawling anything impossible.

If you want a brushless system for a crawler then you should go sensored...End of story!

[SuperRoo]

Originally Posted by SMR 510RR

If you want a brushless system for a crawler then you should go sensored...End of story!

X2 Specially in a LCC.

If you get one and you plan on comp'ing with it then be prepared to chock up heaps of reverse point.

[Interceptor]

I dont comp so no worries there. What is wrong with the low speed?

[Charlie-III]

Originally Posted by Interceptor

I dont comp so no worries there. What is wrong with the low speed?

Non-sensored brushless motors "cog" at low speed, also tend to "hunt" from 0 RPM.

For very fine speed control it is a PITA.

Sensored motors have a lot better control at very low motor RPM's, making them smoother and easier to control.

For "go-fasts" or other rigs that don't see any real time at very low speeds, the cogging is NOT an issue. The lack of a sensor also usually dropes the price of both the motor & the ESC.

[SMR 510RR]

Originally Posted by Interceptor

I dont comp so no worries there. What is wrong with the low speed?

This motor in particular has horrible start up problems. I would pull the trigger, and pull it, and pull it, and then the damn thing would launch like a drag car. Good luck holding a line with that going on.

[majatra]

Originally Posted by Duuuuuuuude

He's driving a Losi, he's gonna need some speed out of the motor he picks.

I missed that part. And since the LCC uses 48p gear, that means that 5mm shafted motors like the 3660 series and bigger Tacons are out. I know Kershaw Designs sells them, but they probably won't fit a tight budget.

I'm going to go outside of the box here and recommend a 2860 four pole Tacon with 2550kv. Its a long 380 motor, but its four pole and is a compact little powerhouse.
Tacon Brushless Motor LBP2860-B/4D-2550KV For 64mm to 70mm EDF Jet
I think Hobbypartz is exaggerating on the power figures, but it should fall between this motor
HobbyKing R/C Hobby Store : XK2860-B-2700KV Brushless Inrunner
with 665 watts at 2700kv on 11.1v (3s) and this one
HobbyKing R/C Hobby Store : XK2860-B-2200KV Brushless Inrunner
with 500 watts at 2200kv on 3s. Averaged out to be about 580 watts on 3s.
I'm just guessing here though.

Leopard makes these motors, and they list every wind at 1300 watts.
Red Leopard LBP2860--±ª×Ó¶¯Á¦Ä£ÐÍÓÐÏÞ¹«Ë¾

It has a 4mm shaft though, so you'd have to drill out the pinion with 5/32" drill to get it to fit.
In my experience, four pole motors are less prone to cogging, but still not as good as sensored.
However, if you ever plan on competing, now is the time to get a sensored motor as you can run it on the SV2 until you get a sensored ESC.