AFAIK the TX750 shares the plate to plate dimension with the XS650s. I checked and both TX750 axle spacer collars are the same part numbers as the XS650's
You're gonna find that the axle plates sucked in a tad from the welding. Here's how I dealt with it. Comment #610.
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I used a bottle jack. Put it on the tubes and not the plates. You could also use a small scissor jack. Just do a few mm at a time. They'll bend back considerably easier than you'd expect. push it out to the 215mm you want then release pressure and see how much it bent. Use that number as a guide for how much more you need to go.You were dead on Jim, I measured between the axle plates and came out with 205mm.
I’ll have another look at how you rectified this.
Cheers!
Boy, you certainly are making that thing pretty, lol. I just clean 'em up and bolt 'em on. Yes, width between the axle plates should match a 650 arm. I've had both 650 and 750 wheel assemblies in my 750 arms. The right side wheel spacer is the same size but the 750 one is chrome and looks better .....
Now we’re getting somewhere I want one lolThe right side wheel spacer is the same size but the 750 one is chrome and looks better .
The tubing is thicker, making it more rigid. Like anything, there's a tradeoff... it's heavier so it add a little to the unsprung weight.Sorry to interrupt the thread but how much better is the TX750 swing arm? Is it worth hunting for one as an upgrade?
750 axles are pretty readily available on eBay for not too much money and usually come with both spacers, chain adjusters too sometimes. All those parts will swap with 650 ones. As I've mentioned before, the 750 swingarm is a dead ringer for the 650 one and uses all the same parts except for the chain guard. This is what makes the swap so easy.
Sorry to interrupt the thread but how much better is the TX750 swing arm? Is it worth hunting for one as an upgrade?
750 axles are pretty readily available on eBay for not too much money and usually come with both spacers, chain adjusters too sometimes. All those parts will swap with 650 ones. As I've mentioned before, the 750 swingarm is a dead ringer for the 650 one and uses all the same parts except for the chain guard. This is what makes the swap so easy.
So I gotta ask on the 78 standard; was it just a swing arm swap or was it also a needed bushing upgrade at the same time? I find it nearly impossible to to do just ONE mod when I start changing things.It's not longer. The big difference is in the diameter of the tubing used, it's nearly 1/4" bigger. I don't know about the tube thickness, maybe that's greater as well. It's the perfect "sleeper" mod. It looks just like the original and you can't really tell it's not unless you parked it alongside one with an original arm in place. Looking back and forth between the two, you would notice the bigger diameter tubes on the 750 arm.
All that being said, I put one on my '78 Standard years ago and the difference it made was quite noticeable. It was more stable and solid feeling at all speeds, not just going fast. Now recently, I put one on my '83 Special and the difference it made isn't as noticeable. All I can think of is that the Special rear end geometry, with it's more laid down shocks, is more rigid to begin with. I don't think that Yamaha planned it that way, they were after more of a "cruiser" look is all. But, it seems they may have achieved a more rigid rear end set-up in the process, more ideally triangulated and stiffer.
No matter, it's still a "mod" I like to do. If you shop around, you can usually score a 750 arm for $50 or less. As far as I'm concerned, that's not outrageously expensive as far as handling upgrades go.