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Old 02-17-2014, 02:39 AM   #1
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Disk/ drum brakes?

I'm currently restoring a 47 Curtis Wright Clipper and came across what I would describe a hybrid brake. The pictures shows a typical drum brake setup but has an 8" disk type electric brake. Does anyone know if there are still parts available for this? Or maybe a direct replacement. Thanks. Click image for larger version

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Old 02-17-2014, 06:02 AM   #2
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Rivet just saying ,

Don't have a clue as to the availability of parts for this brake setup , but would consider that this is more than likely set up to function on 6 volts .

Of course with things being built with much greater durability back then and the ability of the brake controller in your truck to limit the voltage to the trailer brakes , they may provide many years of service if used sparingly .
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Old 02-17-2014, 08:00 AM   #3
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I'm currently restoring a 47 Curtis Wright Clipper and came across what I would describe a hybrid brake. The pictures shows a typical drum brake setup but has an 8" disk type electric brake. Does anyone know if there are still parts available for this? Or maybe a direct replacement. Thanks. Attachment 205767Attachment 205768Attachment 205769Attachment 205770
That disc is a old brake magnet.

Parts for those brakes have been history for decades.

Install new style brakes, hubs and drums and you will be OK.

But, new drums use larger bearings.

Better yet, convert the axle to torsion and you will have current style running gear.

Andy
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Old 02-17-2014, 07:03 PM   #4
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FYI, neither Silver Streak nor spin-off Streamline ever used torsion-arm axles (with a few exceptions at SS in final year of production, IIRC, in 1995). This would be a good time to upgrade to the wider stance and fully independent action of this type. The TT is much more stable no matter the road hazard or emergency maneuver.

That, and disc brakes are high on my list for suspension upgrades. These two are the only real deficiencies of these brands (as they are superior in many respects to an A/S).

See other threads, and recent comments by Top on DEXTER axles & disc brakes. Any DEXTER dealer can measure, order and install the axles and most probably the disc brakes. (See also offerings by TUSON in re DIRECLINK brake controller and anti-lock module for state-of-the-art).

Better tires and wheels are also indicated. Plenty of reading in that area. This subject -- which I refer to as roadability -- is not the place to go cheap. Cars and trucks are easy to replace, but your TT is not.

.
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Old 02-17-2014, 07:54 PM   #5
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Disk/ drum brakes?

The old electric brakes you have are activated with an electric clutch, ie the 2 disks.
If the coils are still good. They should work.
I can't imagine you could ever drive enough miles to wear the electric clutch out.
The brake shoes can be re lined.
Not sure if any of the mechanical actuating mechanism is worn or broken.
Judging from the lining on the shoes. They haven't been used much if any at all.
Do they work?
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Old 02-18-2014, 09:17 AM   #6
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Thanks for all the advice. This forum is great. Lots of very knowledgeable people willing to help.
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Old 02-18-2014, 12:57 PM   #7
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I would keep them if they work. They look well built.

Perry
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Old 02-18-2014, 10:32 PM   #8
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I would keep them if they work. They look well built.

Perry

I spent an hour talking to an old timer who knows a lot about these type of brakes. I would like to keep them cause they are in great shape. But Turns out that they run off 6V and My controller is 12 V.
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Old 02-18-2014, 10:51 PM   #9
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I spent an hour talking to an old timer who knows a lot about these type of brakes. I would like to keep them cause they are in great shape. But Turns out that they run off 6V and My controller is 12 V.
Why not dial the brake controller down so the max voltage delivered is 6V or less?
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Old 02-19-2014, 01:54 AM   #10
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Great advice. I will try it tomorrow. As always thank you.
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Old 02-20-2014, 09:29 PM   #11
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The brakes may not care about the voltage. I believe modern brake controllers vary the voltage to get a moderated brake application. It may mean a different adjustment for the controller.

May be some one with more DC electrical experience could comment.

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