Norton7d
XS650 Junkie
I read some posts that suggest a pivot bolt with a16 mm head is available vs original 14 mm, for strength, is this correct? If so, is it sold new?
This one: https://www.mikesxs.net/yamaha-xs650-pivot-shaft-swing-arm-bolt-with-nut-oem-447-22141-00.html
Ideally, they should have skipped the grease bores, since fitting a zerk on the top of the swing arm pivot area is a better solution. I had to blank off both ends, with one M6 grub screw, and one M6 countersunk screw, combined with a cupped washer I made, that covers the protruding thread, and also secures the M16 nut.
Gary,There's also a Suzuki swing arm bolt with full sized thread, part swap.
The bolt cracking at the "neck" where the threads end is a "thing". Guess I'm an outlier but have never cracked or seen a cracked one. I gotta be up in the 40-50 XS650s territory, prolly 8-to 10 bushing installs and 20ish swing arms removed.over the years.
Well, the XS750 is shaft drive, so that would be a rather complex conversion....So I also read the 2 year only TX750 swingarm is a direct swap which is bigger / better, but not XS750 swingarm?
I did the Suzuki swingarm bolt upgrade a REALLY long time ago, so long that I don't remember much about it. The Suzuki bolt is SOLID, not hollow like the XS650, no grease fittings on the ends, that's why it's better. You add a zerk fitting to the frame that lubes the bolt at the midway point -- 5twins just illustrated adding this fitting in his "$200 Special" thread. And yes, the end threads of the Suzuki bolt are full size, not stepped down.There's also a Suzuki swing arm bolt with full sized thread, part swap.
The bolt cracking at the "neck" where the threads end is a "thing". Guess I'm an outlier but have never cracked or seen a cracked one. I gotta be up in the 40-50 XS650s territory, prolly 8-to 10 bushing installs and 20ish swing arms removed.over the years.
Agreed. Though not near as many as Gary.There's also a Suzuki swing arm bolt with full sized thread, part swap.
The bolt cracking at the "neck" where the threads end is a "thing". Guess I'm an outlier but have never cracked or seen a cracked one. I gotta be up in the 40-50 XS650s territory, prolly 8-to 10 bushing installs and 20ish swing arms removed.over the years.
JIMAgreed. Though not near as many as Gary.
If you shim the inner steel bushing so it's an interference fit in the frame, then the bolt would work just fine being little more than finger tight. I think the problem arises when there's a gap and instead of shimming, people just crank on the nut to try and suck the frame in tight against the bushing.... over torquing it. Properly assembled.... the original bolt is more than adequate. Here's my swingarm install.
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