In fact that there is a big need for good 12S Esc´s for use in MTB i started to test some new one.
The ESC´s are from Robbe and called 9120-12S OPTO
The footprint is similar to the MAX6 only 3mm longer and lower in hight.
This ESC is longer then 5 years on market and is marked as a universal ESC for Car, Boat, Plane and Helicopters.
I bought the optional Programmbox wich is very nice helpfull tool
You can set all needet parameters easily with the programmbox!
Most parameters can be changed like aceleration, timing, reverse, pol numbers etc…
But the brake strenght cant be changed! The amount of brakepower is good IMO so its no big downside for me. Also you have to get on with the trigger way for braking : The board starts to brake on maybe 80% of the trigger brakeway ! So you have only 20% of the normal trigger way. Anyway the brake is proportional and QUITE and good. I get really fast on with it. Maybe if you use better RC-type controllers you can play with settings linke EXPO to get more triggerway.
I rebuild my Beltdrive Trampa with these Roxxy´s
Its a HTD 5 drivegears 25mm width, reduction of 1:6 with a roller and support bearing holder
I use my Hobbywing MAX6 Carbonfibre plate for the Roxxy´s. They comes without mountingholes so i use double sided 3M to mount on plate.
The Roxxys are OPTO Esc´s that means the have no build in BEC. I use an MTEC Keto HV BEC V2, it delievers up to 10A continuous current (-; absolutely overkill but its quality stuff and maybe anyday i can use it for supply anything
Batteries are Hobbyking stuff : 6S 5000mAh 60C Zippy Compact, wired in series for 12S !
Motors are actually the SK3-6374-149KV
First 2 testruns are really impressive. The startup is very good, the acceleration is brutal (-; The thing is a beast, it has such a nice feeling on trigger! It has an absolutely direct feeling, even on low rpm´s …
Will do some video footage on next run if it will stop to rain today (-;
Hang Loose Jenso