Different style front backing plates

W

wrndln

Well-known member
I am starting to restore the front backing plates on my early 1929 model A. I found there are at least three styles of plates as I have 3 that have different types of adjustment wedge housings riveted to the backing plates. The three stamped backing plates look the same to me, the only difference I can see is the wedge housing. I would like to use the correct style for my 1929 A. I have checked the judging guidelines and couldn't find anything about the different wedge housing styles. Maybe the different styles were just different suppliers to Ford, but I have no idea if that is why there are at least 3 styles or if the different styles are used for different years of production. I have posted pictures of the three types below. Can anyone tell me what the different plates are used for? Thanks for any help.

Ftbackingplate1c.jpg

Ftbackingplate2c.jpg

Ftbackingplate3c.jpg
 
If you look at area 7 brake system you will find on page 7-3 and 7-4 an explanation of each style of backing plate,
The round cone is early and is used thru all of 28 and early 29.
The round adjusting cone with the flat on the bottom is used from early 29 to early 30.
The adjusting cone with the cut down portion 3/4 the way around is 30-31.
I hope his helps but look into your judging standards book as it is there,
Ken
 
What month is your 1929?

My 2-23-29 Tudor was made in the Twin Cities plant and has the backing plates you have pictured in the middle.
 
Thanks Ken and Tom for your responses. I was looking for pictures in the judging guidelines like it has for many other items, not in the text. I checked the brake section, but missed the text description on the top of page 7-4. I thought the differences would be in the JG somewhere, but just didn't see the info on page 7-4. Thanks again for the help and pointing me to the right area.
 
Why would Henry waste tooling time and money changing such a minor part that looks like all it does is hold the adjuster?

Is there some modification on the other side I cannot see?
 
Each successive change used less metal. As the dies wore out he would replace them with the next style. Every ounce of metal saved was a cost cutting regaurdless. Over time this added up some. You can see this in many changes throughout production. I have been fortunate in the hobbie to have had the time to compare several progressions of many parts and this seems to hold true with almost all of them. IE the waterpump hsg, got a bigger hole in the bottom, therefore less metal was used. Rod
 
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