ESC recommendations

[Maxamuslead]

It's interesting that experienced Roboteers are against fan cooled
ESC's and there are more expensive fan cooled ESC's on the market
uk/vyper-120a-dc-motor-controller.html at £200 + so I guess they
are not fit for purpose either?.

The Vyper uses a actual heatsink where the Cytron just blows onto the mosfets.

I also believe the Vyper has bean used in combat bots both into the US and UK. (I might incorrect on this)

[team death]

Thank's for the info on the vyper Mark, but it's still a fan cooler
so I assume it's vunerable to Combat impacts.

I have just noticed your location down in somerset there Team
Katch (member first name required) -I'm up north of York so
popping round with the lipos may be impracticable but I'm
very interested in this controller.
What is the highest voltage you have put into the ESC and
do you have any issues with sparking when you connect to batteries ?

[Ocracoke]

I also believe the Vyper has bean used in combat bots both into the US and UK. (I might incorrect on this)

I am sure Foxic uses them when I last saw the robot, so definitely in the UK at the very least.

[katch]

Thank's for the info on the vyper Mark, but it's still a fan cooler
so I assume it's vunerable to Combat impacts.

I have just noticed your location down in somerset there Team
Katch (member first name required) -I'm up north of York so
popping round with the lipos may be impracticable but I'm
very interested in this controller.
What is the highest voltage you have put into the ESC and
do you have any issues with sparking when you connect to batteries ?

48v was tried esc was fine but motors didn' like it... I'll try my lipo when they arrive

[maddox10]

The fans on the Vyper (and Victors ) still are vurnable.

Some of the ESC's have them to boost performance further (increased running time with heavy loads), others just use them as a pure replacement for a heatsink.

The "pure" heatsink replacements ain't good in my opinion. Already to much to go wrong in our machines, we shouldn't add more.

[T00TY_FRU1TY]

Out of curiosity are there any brushless ESC that are commonly used or are they all custom? Again all I can find are scooter or hobby controllers.I have my brushed motors already and have no experience with brushless but these motors look interesting.https://rover.ebay.com/rover/0/0/0?m...2F232169152820

[typhoon_driver]

I wouldn't consider brushless until you are a robot or two into the hobby.

[maddox10]

Depends on weightclass. But brushless drives are finicky beasts. Gearratio is much more important than with brushed motors.

In our raptor we use SimonK programmed Afro 30's for drive. Drive itself is a set of Neptunes coupled with 28mm 2840KV diameter inrunners

In Hannibalito 5 we have, again, a set of Neptunes, but coupled with a pair of 1500KV 3650 inrunners and SimonK TZ85A's.

One heavy I know off uses 100mm diameter brushless outrunners and MGM Compro ESC's. (think big ££££)

Bananaking, a Russian monster, uses Revolt outrunners , but the Alienpower ESC's they tried burned out. VESC's had more succes, but can't get the power the machine needs. (one of the reasons I'm following the 300A VESC thread)

[T00TY_FRU1TY]

I noticed Ellis had major reliability issues using brushless in series 9.

If he had trouble I'm definitely staying clear anyways.

[team death]

Looking at those motors, brushless or not, I wouldent be keen on them
purely because of the size of the drive sprocket at the end-it looks like
its rigged for 6mm chain or less and could be a true reflection of the power
of the motor-48 volt and 2000 watt driving 6mm chain, very questionable.

[T00TY_FRU1TY]

Most of those Chinese motors are t8f sprockets 8mm so use #40 chain

[T00TY_FRU1TY]

I'd just like to thank everyone for all the advice and points of view in this thread.

Very useful

[TechAUmNu]

Bananaking, a Russian monster, uses Revolt outrunners , but the Alienpower ESC's they tried burned out. VESC's had more succes, but can't get the power the machine needs. (one of the reasons I'm following the 300A VESC thread)

Any idea what kinda current those things draw? They seem to vary between 6kW (120A @ 12s) and 15kW (300A @ 12s). The A200S can do 200A for 30s then 135A continuous so far.

[maddox10]

I guess peaks will be what Revolt gives. But with current limiting everything has some measure of protection.

In any case, I'm very interested in your work.
Supporting bananaking and building a E-motorbike are 2 things I could use a good V-ESC for.