Invisibrake by Roadmaster

moose888 wrote:
Has anyone used the Roadmaster Direct Proportional braking system ? If so are you pleased with it.

We used the Roadmaster 9060 proportional braking system for over 75,000 miles on our 2001 Winnebago Adventurer. I just finished installing a new one in our 2013 Adventurer. It's a great system and works well. I especially like the fact that there's only an air cylinder to remove and store in the Jeep.

There are 2 models. 1 for a gas powered motorhome and another for a diesel powered. The diesel power one is easy to install and should take about a day to complete. The one for gas powered coached includes an air compressor and takes considerably more time to install.

If you're considering this system go to the Roadmaster website and read through the instruction manual. It takes a couple days to install if you want a "professional" look.

A couple notes of caution. If you're installing it on a gas powered motorhome decide where you want to put the compressor before you begin. On our first motorhome the compressor was mounted in a compatrment just to the rear of the entry door. There was plenty of air hose and wiring in the kit for this application.

The best place to mount it in our new motorhome was a rear compartment. I had to order more air brake tubing from McMaster Carr to run from the compressor to the proportioning valve (mounted near the front of the coach on the drivers side frame rail) and then all the way to the back of the coach. I also had to add more wire to get from the compresor relay to the fuse box in the front of the coach.

You might also want to check to see what size brake lines you have on your motorhome. Our older motorhome had 1/4" lines so all the fittings were included in the kit. The new one has metric lines so I had to order the fittings seperately.

The fittings offered by Roadmaster do not fit the 2013 Ford F53 chassis. Ford uses a double inverted flare (same as the sae fittings) but with a 12 mm-1.0 thread. You can get the appropriate Tee fitting from Belmetric.com. You'll also need to get a 12mm-1.0 nut. They're made by Edlemann and available from O'reilly Auto Parts.

The kit comes with a 1/4" line with SAE fittings. The line will work but for metric brake lines you need to replace the original nut with the metric one. You can either cut the line, slide off the old nut, slide on the metric one, and reflare the line, or take it to an auto parts house and have it done.