Help with Rear Brake Plate

Technical Big Block Tonti and Loop Frame models
1

Hello all, am looking to put wire wheels on my 1000 Le Mans. Have got a rear brake hub of a 850 T but missing a brake plate. Swing arm has a lug on the inside of the arm that engages onto the calliper carrier to form a brake stop for disc brake

So question, is there a rear brake plate that will fit onto this lug (as opposed to a bolted on torque arm) to suit a 220mm brake drum

Thanks Richard

2

Loop frame rear drum has a stay rod going between a stud on the brake plate to a fixing, on the swingarm near the pivot I think. I’ve never seen a Tonti version.

3

I wonder if some fabrication would get a brake arm to engage with thestub on the sing arm?
Good luck
Steve

4

The 850T brake plate is secured with a torsion bar bolted to the frame as in the earlier V7 Sport

5

Does sound like you are between two stools. And obviously you need to be sure of your installation as we’re talking brakes here. Reckon it would be best to find yourself a brake plate and then get a decent sized stud welded up properly onto the s/arm. Then make up a bolt on torque are from suitably butch flat stock. Should all be fairly simple and inexpensive.

6

Have you worked out how you will actuate the drum rear brake? My loop has a right-hand brake pedal, so there is a shaft going across under the gearbox, which operates the brake rod on the left-hand side.
I’m sure there are disc brake wire wheels which would fit straight on your bike, but presumably rare as hen’s teeth.

7

I agree with the Rambler, it is a lot of work to put a drum on there, we had a thread recently from a chap in the USA who wanted a right hand rear brake pedal, loads of 850T bits and a load of work. The earlier drum bakes were cable operated with later ones using a rod. You will need a load of hard to find parts see https://www.motoguzziclub.co.uk/phpbbforum/viewtopic.php?f=70&t=27785

Didn’t the 1000S have a wire wheel option? The 1000 Mille GT defiantly did have a wire wheel version, so did the 1000 Quota and the 1000 Strada, finding a rear wheel from one of these late 80’s early 90’s bikes should be easier than sourcing early 70’s parts?

Best of luck

8

Thanks for all info. It is as I thought and I will need to fabricate a torque arm attachment on swing arm. Have done it before as an answer to riding British bikes with crap brakes. Of course I would prefer a disk brake but very expensive and very rare.

Thanks again. Richard