Adding parking break? - need ideas

[john42]

I have a Challenge car with racing breaks and the rears do not have a parking break. I want to keep the racing breaks as... they are simply fantastic. I do want to add a parking break.. some how.. My driveway has just enough of an incline that I cannot start the engine and let it idle and get out of the car. I have to put wheel chucks under the wheels first. When working on the car that is fine. When going for a drive and my passenger suddenly needs seat belt help or I want to run into the house for the forgotten sunscreen... it's annoying to have to turn off the car, put it in gear.. etc etc..

I have the parking break handle installed in the cockpit along with all the hardware bits. Just no facility in the rear wheels. Ideas?

[Jacob McCrea]

Get a hydraulic drifting e-brake with a lock/latch mechanism on ebay, add 2 little hydraulic calipers to the rear brakes with custom brackets, and run a 3AN hydraulic line with a T to them. The cables seem like a huge hassle compared to running a hydraulic line. I did the above, albeit with a rotor on the IRS pinion, which I would not do again due to the hassle of mounting the caliper, although it does work well. But I would do a locking hydraulic system with calipers on the brake rotors, as described above, again.

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[NAZ]

John, I had the same problem to solve on my race car. I wanted large diameter rotors and 15" wheels. And I wanted to keep the weight down. So I went with one of these block valves in the rear brake line: https://www.speedwaymotors.com/Speedway-Motors-Park-Lok-Valve-With-Fittings,387282.html These are commonly used for parking brakes on airplanes.


Push and hold the brake pedal, push in the Park-Lok knob and hold while letting off the brake pedal. To releaase, simply push the brake pedal hard and the spring on the Park-Lok knob releases the pressure. Easy to install, low cost, and light weight.

[Jeff Kleiner]

Look into adding cable operated parking brake pucks like this from Wilwood.

https://www.wilwood.com/calipers/caliperlist?subname=mc4%20mechanical

Jeff

[rich grsc]

What did you break on your car?

[Jim1855]

I built a driveshaft (diff) mounted disk that incorporated the adapter as well. Using a mechanical caliper from Wilwood's carting product line on the single disk. Need to work out the brake handle, cable and end mount, on the project list.
My concern was setting parking brake pads on hot rotors. Perhaps not necessary but I've come into the pits with hot brakes.
Jim

[SteveHsr]

I found a very nice quality full floating mechanical caliper manufactured in Colorado by I. P. S. Company ,IPSCO.
Sales@ipsco.org
303-252-4481

[CraigS]

I have a pair of the Wilwood parking brakes w/ home fabbed bracket you can have for the shipping. Email me at craigstuard at comcast dot net w/ FFR as the subject. If you are interested I will get them out of the moving box, and take some pics. Here one is as I was removing the solid axle to do IRS.
https://live.staticflickr.com/65535/51623949277_518b2359a8_z.jpg (https://flic.kr/p/2mDQeyZ)IMG_20161101_113439026 (https://flic.kr/p/2mDQeyZ) by craig stuard (https://www.flickr.com/photos/152454123@N04/), on Flickr

[mikeinatlanta]

If at all concerned with inspections then line locks don't pass if noticed. I went with a cheap willwood spot caliper on a fabricated bracket. Had to also fabricate a spacer to widen the caliper itself to fit over my large rear rotors. As a parking brake it is marginal.

[john42]

Thanks CraigS! Going to give that a go.