Author Topic: New Departure Model A Coaster Brake  (Read 3213 times)

Ed Minas

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New Departure Model A Coaster Brake
« on: August 12, 2018, 08:32:25 AM »
Is anyone knowledgeable on the Model A coaster brake.  During the ride in Oberlin I applied standard braking pressure and the hub Loosened up and causing the wheel to wobble and was unable to finish..  Upon examination the cones had backed off.  So I thought there should be a thin locking nut on the cones to prevent this in the future.  That said after looking a numerous diagrams I do not see that ND provided any as manufactured.  So is this a common problem with Model A’s?  I want to ride my 1911 Iver is this correctable or should I replace the hub with a modern coaster brake I  so I can ride with complete confidence?   Inquiring minds need to know.   Thanks in advance.

55inchwheel

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Re: New Departure Model A Coaster Brake
« Reply #1 on: August 12, 2018, 08:11:54 PM »
ED, I feel your pain! I'm very experienced with the model A, I have rebuilt many (new balls, etc.) They brake 'friction' surface wore quickly and there wasn't a remedy supplied by ND. New brake shoes added some life but they aren't available any longer. I have heard of some guys having 'flame sprayed' a new brake surface inside the big end of the hub.

Back to your question, no, everything in the diagram is needed but another nut isn't needed if the parts are assembled and tightened properly. Mind you, this isn't a good brake but for careful riding it works fine. I added a modern day 'caliper' brake to the front wheel on mine and I use the Model A only for forward motion.

If you have all the pieces shown in the attached diagram you have what you need. This is one of those situation where I say: "I wish I had that wheel here and I bet I could fix it!"

55inchwheel

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Re: New Departure Model A Coaster Brake
« Reply #2 on: August 12, 2018, 08:16:01 PM »
I tried to attach two photo, only the second one worked, I'll try again.
by the way, does anyone know how to edit your own post?

Ed Minas

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Re: New Departure Model A Coaster Brake
« Reply #3 on: August 15, 2018, 07:05:38 AM »
Thank you that information is extremely helpful.  Where are you located?

55inchwheel

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Re: New Departure Model A Coaster Brake
« Reply #4 on: August 15, 2018, 09:48:21 AM »
Ed, I'm located just over the hill and through the woods on your way to Grandmama's place, in Duluth, Minnesota at the western tip of Lake Superior 150 miles north of Minneapolis. Not close enough probably. But pretty close to the semi-annual Mackinac Island meet which I'll have to miss for the first time in 10 years because the 2019 date has been moved to August after my kids go back to school. (dang it)
Tony  :)

Ed Minas

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Re: New Departure Model A Coaster Brake
« Reply #5 on: August 16, 2018, 10:25:00 AM »
Darn.  I bet I met you last year at Mackinaw. 
Thanks again

Hopefully someone closer has a handle on ND Model As