Wheels?

Yes, they will fit the 650 but you'll need/want to swap the rear sprocket to a 650 size. The one on the 750 wheel is much too big. You'll also need to use your disc as the old style on the 750 wheel is offset differently.
 
5twins said:
Yes, they will fit the 650 but you'll need/want to swap the rear sprocket to a 650 size. The one on the 750 wheel is much too big. You'll also need to use your disc as the old style on the 750 wheel is offset differently.
Click to expand...

Just so I understand. I can take the rear sprocket and front disc off my current wheels and install them on these ones... Good to go? One more question. The rear spoked rim has a black wire (I circled in the pic). I could find this wire on my current wheel. What is this? Am I missing something here?
 
Here is pic
 

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Chachiboy said:
Just so I understand. I can take the rear sprocket and front disc off my current wheels and install them on these ones... Good to go? One more question. The rear spoked rim has a black wire (I circled in the pic). I could find this wire on my current wheel. What is this? Am I missing something here?
Click to expand...

Hi Chachi,
older XS650 rear brakes also had an electrical gadget there. It turned on a red dash light when the rear brake shoes got thin.
Yamaha dumped that system in the mid 1970s. Remove the gadget, install the wheel and ride.
 
Leave the switch under the brake arm in place or you'll have a hole in the plate. Just remove the wire. You can also cut that bracket you circled off the plate if you want.
 
Here's my 750 rear wheel, wire bracket removed, plate polished .....

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Yamaha used this switch on several of their early '70s models. Here's the brake plate from a TX500 that had it .....

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..... and after I removed the wire bracket and polished the plate .....

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I did want to remove the switch itself and replace it with a short stainless bolt I could polish but I couldn't find one with the odd sized metric fine thread it uses. I had to settle for just replacing the Phillips wire retaining screw with an Allen .....

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Leaving the switch in place is no big deal really because the brake arm covers it and you barely see it .....

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Those wheels look great. Any tips on polishing the wheels? Mine need it badly, they are putted in several areas. I don't have access to sandblasting or anything. I have no problem putting in some elbow grease. Mothers makes an aluminum polish see pic. Any good? Any tips? Yours look great
 

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The Mothers polish works OK but many of us prefer another similar cream polish called Blue Magic. It seems to work a bit better. You're going to need to do some wet sanding to remove the heavy corrosion first before you start in with the polish.
 
You will need 320 for the heavy corrosion. Then work your way up through 400 and probably 600. I don't usually find the need to go beyond 400 but I have buffing wheels that will remove the scratches from 400 paper using the coarse black emory buffing compound.
 
Yes, they work pretty good too, especially in the "rain gutters" and around the spoke nipples. They work even better for me now that I got a specialty 4000 RPM drill. You'll also want the orange colored coarse version.
 

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