My Willys 3A and 3B Community
TECH FAQ SECTIONS => Chassis, brakes and suspension. => Topic started by: ChuckvB on December 07, 2021, 11:57:13 AM
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I'm in the process of helping my daughter restore her Granddad's CJ-3B. Safety is my #1 concern so I've started procuring Disk brake conversion parts. If I convert the rear drums to disk (I'd like to as it all needs an overhaul and I dislike drum brakes). The only challenge is getting information on the electric control. Does someone have some info on the power and control needs of the electric emergency/parking brake? Also, Is doing only one side with the parking brake or both sides? (Doing one side could cause some differences in rear brake forces too). I can see a benefit but the cost is more. Otherwise, I'll rebuild the drum brakes :-(
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Do as you like but aside from better performance when WET Disc's won't stop a Willys any faster then a good set of 11" Brakes. Cause at 60mph I can lock up all four corners with my 68 Wagoneer 11" brakes on my 3000lb CJ-2A 60% of all braking is done by the front brakes.
You could easily swap the fronts to Disc then run E Brake 11" brakes and come up with something like a Lockar E Brake handle to engage it. I went a more complicated way and made a fancy balance bar pivot and control mine with the in dash cane handle.
As to the electric E brake I have no experience.
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It's a fair consideration and eliminates safety issues of loosing power to a brake while running down the road.
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I found out the electric motors drive gear trains and reversing the current moves them ( I wasn't sure they weren't just solenoids). So they will fail fixed, if power is lost. Now just to select a safe parking brake switch you can't just bump while driving....
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check with Brennan. I am going to install his Disc brake kit with electric E-brake's. One can lock both sides with one switch, use two switches and lock them independently, or both.
He is very helpful!!!
https://brennans-garage.com/products/electric-emergency-brake-eebrake-rear-bracket-kit-41-75-jeep (https://brennans-garage.com/products/electric-emergency-brake-eebrake-rear-bracket-kit-41-75-jeep)rennan
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i used calipers from a 2015 and up ford fusion when i did my rear disc conversion. Works pretty good. if you have access to a place that does plasma cutting i can send you a cut file. My cost for 6 brackets was 70 Canadian. wiring is simple, just a double pole double throw switch and a five amp breaker.