Help me choose controllers for dual Q100 build

[Hwy89]

I just purchased a front and rear pair of Q100 motors which I intend to install on a dual drive setup and I need to find a pair of controllers.
I will be using a 12s battery pack that tops out at 50.4 V. From what I've read I will need to limit current to about 18 amps max. I will be using throttle only and will initially try the single throttle split signal approach.
I have to hang two controllers on the frame so the smaller they are the better. Is there such a thing as a dual controller or has anyone combined two into one case?
Any and all ideas are welcome.

 

[grindz145]

The adaptto has a feature to support dual-controller operation. However, they are WAY overkill for a Q100.

You might want to consider the phaserunner by Grin. It's extremely versatile and I can attest that they work fantastically well with a Q100.

 

[DAND214]

Doesn't BMS have a dual controller on their site?

Dan

 

[Hwy89]

The Phase runner is awesome and I like the way it looks but at $295 each I will have to pass.
The dual controller at BMS Battery is actually a pair of big clunky controllers that are for 72 v 1000 watt motors.
I just noticed that in my post I wrote 18v when I meant to write 18amp. Will edit it now.

 

[amberwolf]

They haven't been made in ages, but Crystalyte used to have a little 20A dual controller.

It's probably easier to just use a couple of tiny 6FET controllers; there's some of the LS (li shui) and KT (kun teng) that are the size of a small pack of cigarettes, I think they are 8 or 10A, 36v or 48v. Sorry I don't know the model numbers/etc.

 

[stevc]

If you want some cheapies, can run sensored or sensorless, has 50 volt capacitor, I have used at 12s a lot.( you would need to monitor low voltage.) They are small and handy to have as a backup as well.

https://www.aliexpress.com/item/24V-250W-BLDC-motor-controller-E-bike-controller/422302159.html?spm=2114.01010208.3.28.qtKlcS&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10130_10068_10136_10137_10138_10060_10131_10132_10062_10133_10141_10056_126_10055_10054_10059_10099_10103_10102_10096_10148_10147_10052_10053_10050_10107_10142_10051_10143_10084_10083_10080_10082_10081_10110_10111_10112_10113_10114_10078_10079_10073_10070_10123_10124,searchweb201603_9,afswitch_1,ppcSwitch_5,single_sort_0_default&btsid=cdb74035-4174-4bb3-8043-a10ff8af571c&algo_expid=7536d5ac-bff0-4b39-95a3-b3e38d808463-3&algo_pvid=7536d5ac-bff0-4b39-95a3-b3e38d808463

 

[Hwy89]

Thanks for the suggestions. I just ordered a pair of generic Chinese 36/48 V, 350W controllers from EBay. Fingers crossed that they will eventually get here and will actually work. They are small as AW described so it shouldn't be too hard to find a place to mount them.
How do multi voltage controllers work? Do they automatically sense the system voltage and adjust LVC accordingly or is there switch or wire combination to tell them if they are 36 or 48 V?

 

[amberwolf]

Some sense and adjust, and some just use the lowest LVC (relying on the battery's BMS for anything that is above that).