Q&A Forum
So after spending the last 12 months working on a plan and previously asking as many questions as I can, I've had someone suggest that the retarder in the sun roadamatic I'm converting may be a 24v unit.
Is anyone able to give me a simple method of ID?
Googling model numbers does not provide any answers.
This is good news! Total resistance measures around 15ohms
So would assume that it's not a 24v unit and therefore I don't need to rewire the coils.
Great news!
Mine is a CA135 unit.
From what I've seen it's not possible to assess the coil wiring visually without removing the hub assembly and an end plate- something I would rather avoid.
I had the unit powered and controlled with the yourdyno system (including power supply) @192 volts.
The coils emit an audible hum once load is added.
I ramped to 50% and then progressively to 100% in the software and verified brake application through spinning the roller
I'm hoping to get a car on later in the week. (just finalising tie down points at the rear)
I'd expect that if the unit was wired for 24v or otherwise, it would draw massive current and pop the internal fuse of the yourdyno power supply?