Yamaha rear brake drum sizes

[wfo speedracer]

I have run into a snag on the virago, when I got the bike it had the wrong rear wheel on it, someone had put a chain drive wheel on it to make it a roller. I found a wheel on Ebay with the correct splines but the brake drum that fit the first wheel was too small. So I then ordered a brake drum for the virago 920, this brake drum is 200mm and is too big.

This info on the rear brake drum diameters is damn hard to find on the internet but apparently the same brake shoes fit the 535-700-750 and 920 as well as the xv1100, maxim 750 seca 750 and a host of other bikes.

The rear brake drum on my rim is 180mm diameter, does anyone know of a brake backing plate and shoes that will fit the wheel I have , my next step is to go by the motorcycle shop and start pulling service manuals to get maximum brake drum inner diameters in hopes of tracking down what wheel I have.

 

[wfo speedracer]

Looks like it's an XJ650 rear wheel, brake backing plate has been ordered,either it fits or I have the start of a very nice collection of used rear brake backing plates lol.

 

[cosworth]

The XS650 is 180mm X 30mm.

 

[wfo speedracer]

It looks like this wheel is from an XJ650 Maxim, my Ebay seller is verifying the diameter before I purchase anther one, if anyone needs a Yamaha 200mm rear brake backing plate hit me up I have quite the collection lol.