More stupid QD brake queries.

[tombeau]

OK.

I'm double checking everything before I start mucking about with my brakeplate.

I've been looking round the net, One picture I found showed a Goldie with the Brake Outrigger Strap (the strip of metal with two holes which braces the pillar that holds the brake cam, by attaching it to the wheel spindle) fitted between the brake plate and swinging arm. I doubt this is correct as
the flats machined on the spindle are only just long enough to reach into the swinging arm, without introducing something else in there.
 
Also, I have always fitted the brake torque arm to the inside of the lug on the swinging arm.
I noticed my old brake plate shows wear on the edge nearest the torque arm, like it wasn't sitting straight. I did suffer from sprocket wobble with that set up though.

The old brakeplate looks identical to the RGS type (I'm assuming nothing here) and has a lip with  0.16" depth.

The new RGS brakedrum/ sprocket (which needed to be machined to accept the bearing supplied with it) has a groove 0.11" deep.

Anyone able to confirm that these measurements are as should be?

Whilst I'm more suspicious of the depth of the groove in the new brakedrum/ sprocket, than I am of the brakeplate of doubtful origin, It would probably make more sense to adapt the brakeplate, as at some point I'll need a new rear sprocket and run into the same problem again.

Your thoughts welcomed.

Cheers,
Iain

[trevinoz]

Iain,
         I hate to be the bearer of bad news but that strap belongs on your brake.
Part number 67-6046  rear brake outrigger strap.
You are correct in your observation that the brake plate seems identical to the RGS.
It was used on A7, A10, B31, B33 in 1954-'55 and Goldies.
Trev.

[trevinoz]

Iain,
       Further to above, the outrigger strap is fitted under the nut, not between the plate and swinging arm. It also serves as the anchor for the brake lever return spring so I am at a loss as to how you have the spring fitted.
The plate spacer I will attempt to describe.
It is a spigoted spacer with two diameters each 1/4" thick giving a total thickness of 1/2" with a 7/8" clearance hole through the centre.
The diameter of the large portion is 1 3/4" and the small diameter is 1 1/8".
If you make your own you can make to suit clearance of the plate to the drum.
I measure the groove around the brake drum from the face as 0.120" which is close enough to yours.
The torque arm does fit onto the inside of the swinging arm.
Another item you may not have is the spring clip which covers the oil hole on the brake lever spigot.
 Trev.

[tombeau]

Cheers Trev.
Thanks very much for taking the time to measure your stuff. It really is greatly appreciated.
This isn't bad news. Previously, I had the outrigger strap fitted behind the nut.

Whilst my old brake drum had a double diameter spacer, the RGS style one has a single diameter. The hole in the brake drum being smaller.

I've never been able to get my hands on one of those spring clips and have always resorted to black insulating tape.

My old brake plate has worn on one side, as the plate has a slight taper, the worn side is slightly thicker, this can't be helping things either. I also need to check that it isn't warped.
Cheers,
Iain
 

[tombeau]

YES!

I think I'm getting somewhere here.
I just checked my receipt.

I had asked for the spindles and all  spacers and gubbins required.
When unable to work out how to fit the bits together they kindly sent the parts diagram.

It turned out they had sent me bits for inside the wheel, which I don't actually need, but hadn't sent me 67-6034 retaining spring ring, they had neglected to tell me this, and that it was out of stock.

Checking my receipt, I can see they also haven't sent 67-6032 rear hub collar....I have been attempting to use 65-5890 hub spindle distance collar.


My old brakedrum has a "straw boater" shaped spacer which was fitted with the "brim" sitting against the bearing, as the hub has a wider hole.
If I fit this the opposite way round in the new brakedrum, it looks like it will work!!!

I'll post a picture later that will hopefully explain what I'm thinking.

[tombeau]

Hi Trev,
and anyone else interested enough to trawl through this.

In the foreground, new brakedrum,
in the background old drum with it's"straw boater hat" spacer. When fitted the way up it is shown,as i always did, the spacer fills the hole nicely covering the bearing race, with the brim fitting flush and the crown of the hat sticking out.

Is it in fact part 67-6032?..I just measured it, it's the same as yours Trev...
and should it be fitted as per photo 2 (upside down) to the new brakedrum ?
I can see how this would work as the wider area would support the brakeplate far better.
The hole is smaller in the new brakedrum, the crown of the hat fits snugly and rests on the inner bearing race. There is some clearance between the brim and the top of the brakedrum it is sticking out of, as would be required.

The parts manual photocopy I have isn't clear enough to show this part.

Also, it looks like in the illustration, there is something extra on the brakeplate, like a spacer or nut between the plate and the torque arm. Am I missing something on my plate?

Trev, you've been a fantastic help!

Cheers,
Iain

[trevinoz]

Iain,
       Now you are getting it! The spacer does go in upside down as you have discovered. I don't think the wide part will go through the hole in the hub and contact the bearing.
The "something extra" is , in my case, a flat washer to keep the brace clear of the plate. On my other one, I didn't fit a washer and should have as the brace has scratched the paint.
The bolt that goes through the brace and the swinging arm bracket is 3/8 BSF with a slotted nut and drilled to suit.
  Trev.

[tombeau]

Yayheyyy!
I have a working back brake now.
The brakeplate was slightly oval and it's groove slightly too deep for the drum. I got that machined too, everything spins nicely now.
I no longer have any sprocket wobble, so hopefully everything will work nicely, and it will have been worth all the hassle and expense.

I'm trying to remember if the cable brake originally on it was really that bad....yes it was actually!
Cheers,
Iain

[trevinoz]

Glad to hear it ,Iain.
The half width brake is a very good one. I can lock the back wheel easily.
I haven't got the full width one on the road yet so am yet to experience the joys of it.
Trev.