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does anyone know what length u/j driveshafts fit the triumph , i have been told that the ones off the zx-r fit. i am rebuilding a triumph to run and dont really want to use the old dog bones

Yes, the ZX-R and Triumph use the same driveshafts. But I'm not sure about the total length and axle dimensions.

Part numbers:

OT-6: stock rear dog bone for Triumph and Lazer ZX-R
W-5061: stock front universal swing shaft for ZX-R. Can also be used as optional rear swing shaft for both models.

Also see the Kyosho manual for both models. You'll notice that the Triumph manual lists W-5061 as an optional rear swing shaft.

http://www.competitionx.com/kyosho-manuals/

I see W-5061 pop up for sale sometimes, but they're spendy!!!

If you find an alternative, please post back. I'd be interested to hear of other options for mine as well...

Also just found some great info on the inner-webs. Sounds like CVDs from the Kyosho ZX5 are a decent fit. Kyosho part number LA245.

https://www.tamiyaclub.com/forum/index.php?/topic/50728-optima-mid-universals-modern-replacements/

There's also relevant info on Kyosho CVD options here:

https://www.rc10talk.com/viewtopic.php?f=30&t=19856&hilit=kyosho+w5061