Lol. You created a magnum opus with that restoration thread! I hope to take more on the XS2 resto when I get to it - if I forget something, I can always go to your threadOr about 1500 in my case!
Yeah, still pondering the mono shock; ya don't see too many of those done on this frame . The main frame cradle extends back to the seat/r. fender rails (as opposed to some looping back up to the backbone). I don't want to hack that (though seen it done ). I'm hoping a rather simple ladder affair welded up to the stock swingarm (got an extra) results in adequate travel. I've not yet considered a vertical shock with cantilever linkage. If it doesn't work-out, I have a set of vintage Koni shocks that'll bolt right upMotor is looking sharp and I like the direction this is going with the inverted forks and mono shock rear. I’ll be interested in seeing some detail shots of the rear suspension linkage.
I certainly agree that force and points of stress need consideration. The HMC CR750 race kits supplied a bunch of parts including updated forks and shocks - but, interestingly not a swingarm. The monoshock design I'm contemplating would include a a "ladder" that would stiffen the swingarm considerably and also add plate and gusseting at the top mount in the neighborhood of the rear tank mount. I've done similar mods in the past without calamity:While I admire your vision I am never a fan when people try to re engineer an almost 50 year old frame. People never take into account the forces that are present on a monoshock rear suspension and the forces you are introducing into the old frame that was never designed to handle it. Much more reinforcing and strengthening need to be brought into the build.