Heck, you guys are a tough crowd !
These guys also do a wireless version
http://www.trailparts.com.au/brake-controller/ So Elecbrakes are not the only one. Although the Credo has a dedicated screen.
The both state that they are ADR compliant. Correct me if i'm wrong but to get an ADR approval the whole braking system is considered, not just the controller.
I'd reckon that both units have a battery somewhere, the Credo certainly does, and for +$600 on the Elecbrakes you'd hope so as well.
Current draw seems pretty hard to track down but one source (dexteraxle) for 10 - 12 inch drums stated 3 amps each and another site stated max 15 amps for 12". From my experience with hydraulic solenoids I'd reckon the max current of 15 amps is the pull in current and that the 3 amps would be the continuous current. Our 1000 kg magnets on our safety gates pull just under 1 amp at 24 Vdc so for me 3 amps add up. Given pull in currents for solenoids usually last 100 to 200 ms, 1 mm^2 wire would be able to handle the 6 amps of continuous load (2 brakes) for an hour without looking sideways, but the both sites recommended gauge equals 2mm. If you are on the brakes for an hour, surely you've probably got bigger problems.
I'm not sure about all of the problems with the wireless, both of these systems would use the brake light to bring on the brakes and the wireless is just to adjust the settings on the controller, if the wireless is lost then it just uses the current setting. I don't have a brake controller on my defender, but my Disco 2 had one installed, tell me if I wasn't using it correctly, but the several times I towed my dad's van around for him ( at the time he had one of those jeeps), once the controller was set I didn't touch it. The van was a little over the 2000 kg mark.
For the money, if I had one vehicle and one trailer, I recon there are plenty better options, but after having to tow hire car trailers around for a few people over the years, I think that it would be a great thing for a hire fleet.
Cheers
Glen
Bookmarks