'79 xs650 Modern Cafe Build

Making sure everything stays square while welding. A little heat can ruin all of your hard work during layout.
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Damn glove caught on fire and ruined my rhythm!
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Due to clearance issues I have to abandon my original mono shock linkage design. This adjustable Sachs shock from a Ducati is designed to work without linkage and should fit nicely.

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For those wondering about my plans for mounting the swingarm, here it is.
This design ties the backbone, engine and swingarm together. The plates are cut from 1/4" steel. I still need to cut spacers for top mounting bolts.
There will also be additional support tabs on the frame tubes to help distribute the stress.

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Very nice design, just curious have you figured out where your additional surpports will connect to the frame..
Love the way this is coming together.
Nic
 
I have some free time at work today, so I thought I talk about some of my future plans.
The next step is to add some cross bracing to the new frame section, and the additional swingarm mounts on the two frame uprights. I'm still thinking about my plan for bracing, as always flex is an issue. I also have a plan for strengthening the backbone as it will now also take some stress from the mono shock.
Then I'll tackle the mono shock. I think that I am going to add a tubular support "hoop" to the swingarm to add strength and a mounting point for the shock. I am really trying to make everything as strong as possible, but keep weight down. So, I am going to try and keep it as minimalist as possible.

Thanks for following.
 
I am following this with great interest, and envy of your skills. Thanks for posting.
 
I managed to get the rear support tube bent up today. Only took two tries...grrr. But here is a quick mockup. The swingarm is not at the correct angle because the tire hits the frame jig. When the swingarm is correctly angled down the shock fits into place. I'll hopefully have it welded up tomorrow.

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