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Old 07-16-2010, 02:21 PM   #1
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Arrow Driveshaft mounted parking brake

I am working on an old COE and need an emergency/parking brake. Does anyone have experience with a driveshaft mounted brake. I was thinking a rotor mounted at the transmission tailshaft and a caliper mounted to a frame bracket. I did a search and didn't find anything (I probably should have searched "break" instead of "brake"), if there is already a thread on this a link to it would be great.
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Old 07-16-2010, 02:35 PM   #2
swblandy
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Default Re: Driveshaft mounted parking brake

nearly all land rovers have a drum brake mounted on the rear of the transmission and i think rocky mountain 4x4 do a disc kit for series landies that you might be able to adapt
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Old 07-16-2010, 02:49 PM   #3
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Default Re: Driveshaft mounted parking brake

sorry its not rocky mountain that does the kit, its the x-brake disc handbrake kit, at www.x-eng.co.uk
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Old 07-16-2010, 02:56 PM   #4
54fierro
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Default Re: Driveshaft mounted parking brake

When I worked at the auto parts store I seem to remember sending out some brake shoes to get relined but they were lined on the inside. They said it was for an early GMC that had a driveshaft mounted parking brake.

I wish I had more info but it was like 20 years ago. I did a search but couldn't find anything to verify this, hopefully somebody here knows something about it.

..or maybe they were just pulling my leg. ?
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Old 07-16-2010, 03:00 PM   #5
58prostreet
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Default Re: Driveshaft mounted parking brake

Most all 40's and 50's mopars have a drum brake on drive shaftright behind transmission.
Bob
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Old 07-16-2010, 03:04 PM   #6
gearhead1952
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Default Re: Driveshaft mounted parking brake

I bought one years ago from a street rod supplier may have been made by ECI if I remember right. It was a disk that mounted on the rear of a ford 8 or 9 inch, not very beefy probably too small for a COE. I've got a couple original Ford units pulled from 48-52 ford trucks larger than half ton with the heavy duty transmissions. It is a drum that mounts to the rear yoke of the trans and a band with brake shoe lining clamps around it to stop it. Lever comes up through the floor. If interested available cheap, pm me.
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Old 07-16-2010, 03:14 PM   #7
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Default Re: Driveshaft mounted parking brake

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Originally Posted by 58prostreet View Post
Most all 40's and 50's mopars have a drum brake on drive shaftright behind transmission.
Bob
Here is a picture of my 55 Plymouth 3-speed trans. with emg. brake attached. It is getting ready to go to the scrap yard.
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Old 07-16-2010, 03:28 PM   #8
Jax2A
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Default Re: Driveshaft mounted parking brake

Willys Jeeps have drum parking brakes off the transfer case too. I'm not sure when they stopped using them though.

I don't see why your idea couldn't be made to work though...
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Old 07-16-2010, 03:30 PM   #9
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Default Re: Driveshaft mounted parking brake

Might be a crazy or impossible idea... I remember that the drag racers used a "line lock" on the front brakes to keep the car from creeping at the start line, can you possibly do the same? In other words part the truck, step on the brakes and engage the line lock, release the pedal .It's my understanding the calipers would be engaged until the line lock would be dis engaged. My old Stude has a factory built line lock that locks the brakes on an incline until you dis engage them, sorry i don't know how it works but they were specifically made to keep the driver from floating the clutch to keep the car from rolling. hope this helps... IP
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Old 07-16-2010, 03:37 PM   #10
Relic Stew
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Default Re: Driveshaft mounted parking brake

There are aftermarket yoke mounted parking brakes for the off-road crowd upgrading to rear disk. These mount to the transfer case output, but could be adapted to a transmission with a fixed yoke.

Google "transfer case parking brake"

http://www.pirate4x4.com/articles/pr.../allpro_ebrake
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Old 07-16-2010, 03:38 PM   #11
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Default Re: Driveshaft mounted parking brake

A lot of GM P30 motorhome chassis had a park brake mounted to the rear of their Turbo 400 transmissions. A lot of those used brake shoes and drums from like the front of a 65 Chevy 1/2 ton truck. Some 4L80E transmissisons have a similar deal.
Or buy a Mico Lock and plumb it into the brake system. Think 1970's and '80s one ton wreckers.
Maybe better question. What intended powertrain combination? That will determine a lot of stuff.
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Old 07-16-2010, 03:43 PM   #12
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Default Re: Driveshaft mounted parking brake

Mico brake lock will work good when your hydralic system is working good. Any leaks or no fluid to build pressure and your problems and need for an emergency brake have just compounded.
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Old 07-16-2010, 03:44 PM   #13
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Default Re: Driveshaft mounted parking brake

I would use a Micro lock system or a manual line lock Try the hand brake on a C60 Chevy Drive shaft & all
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Old 07-16-2010, 04:10 PM   #14
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Default Re: Driveshaft mounted parking brake

Quote:
Originally Posted by InPrimer View Post
Might be a crazy or impossible idea... I remember that the drag racers used a "line lock" on the front brakes to keep the car from creeping at the start line, can you possibly do the same? In other words part the truck, step on the brakes and engage the line lock, release the pedal .It's my understanding the calipers would be engaged until the line lock would be dis engaged. My old Stude has a factory built line lock that locks the brakes on an incline until you dis engage them, sorry i don't know how it works but they were specifically made to keep the driver from floating the clutch to keep the car from rolling. hope this helps... IP
They did this in the 70's,there was a magazine article about it.
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Old 07-16-2010, 04:14 PM   #15
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Default Re: Driveshaft mounted parking brake

speedway has them but for a 9inch. their kit uses a rotor and caliper design that mounts to the rear yoke. might be something to look at.
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Old 09-09-2010, 12:46 AM   #16
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Default Re: Driveshaft mounted parking brake

Quote:
Originally Posted by #1 View Post
I am working on an old COE and need an emergency/parking brake. Does anyone have experience with a driveshaft mounted brake. I was thinking a rotor mounted at the transmission tailshaft and a caliper mounted to a frame bracket. I did a search and didn't find anything (I probably should have searched "break" instead of "brake"), if there is already a thread on this a link to it would be great.

Most GM COE and 1ton and larger trucks ALL had driveline parking brakes usually in teh form of a drum brake mounted to rear of tranny.

email me for pic of mine.

also these guys purportedly do a great job and have a good product.
http://www.highangledriveline.com/e_brake.html
Because Im installing a gear vendors unit in my 55.5 1ton my OEM parking brake will be useless since the GV unit doesnt have park feature so my tranny drum brake will now become a disc on the pinion of the dually HO72 axle.

MICO also makes a mechanical activated disc caliper that is quite good and will hold my camper on an incline of 10 degrees without fail using a 9" rotor(according to the tech guy at MICO) with a 7x overkill factor.

it is teh 515 caliper.
-----copied------
> Hi Mark,
> We do offer a mechanical caliper brake that may be able to help. It
> appears based on the information you provided that
> a torque of 2,200 in-lbs is required to park the vehicle on a grade
> of 10%.
> On the 9" diameter disc you mention with the
> caliper properly adjusted and burnished we could achieve a torque of
> approximately 14,000 in-lbs with a full rated pull on the lever.
> Our caliper is manufactured to accept a 1/2" disc thickness. We do
> not
> offer rotors. One could easily be fabricated
> from a local machine shop out of flat plate and have it machined to
> fit
> your hub bolt spacing and center hole. A lever such
> as the one in the print below could work with the caliper using an
> interconnecting cable if desired. A hard linkage to a
> current lever is also acceptable. Keep in mind the maximum pull
> rating of
> our brake lever of 330 lbs or you may damage
> the inner works of the caliper. We based the torque calculation on a
> rolling radius of your tire of 16" and a gear reduction
> of 5.14:1 and parking the machine on a 10% slope.
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Old 09-09-2010, 07:40 AM   #17
Kerrynzl
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Default Re: Driveshaft mounted parking brake

Use a Toyota Dyna Truck Handbrake [ from about '85 onwards ] they are drumbrake on the back of the gearbox

In fact the whole gearbox would be suitable for a COE [ cable shifted 5 speed ]
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Old 09-09-2010, 07:46 AM   #18
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Default Re: Driveshaft mounted parking brake

Mico brake locks are only rated for intermediate parking with a regular parking brake. But I didn't let that stop me.
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Old 09-09-2010, 07:50 AM   #19
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Default Re: Driveshaft mounted parking brake

I've got a 1965 vin (last year sold) Willys station wagon with a drum brake on the transfer case. Looks like a very easy unit to convert to anything else. Not sure if the same setup was used on the later model Jeeps.

The willys units are pretty easy to find, lot's of people pull the willys powertrain and replace it with something more modern.
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Old 09-09-2010, 07:59 AM   #20
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Default Re: Driveshaft mounted parking brake

My 1971 CJ-5 also had a transfer case mounted drum brake.
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