Its easy to pick fault....so I'm not going to.
Why concentrate on "retro" designs and make the same mistakes. I would be looking at modern designs where big R&D budgets have optimised the pivot positions and axle paths over the years. To do something different will take a lot of R&D and prototype building, great if you have the capacity.
Remember to think about positioning the brake caliper to avoid "brake jack" , and the practicalities e.g. will the end of the shock catch my legs?
I'm using this design because I like the looks and I want to see if a more modern design will improve the old system.
I don't know what 'brake jack' is so could you elaborate
And I was thinking about it getting in the way of legs yesterday so I'm going to try a few ideas out on the design.
the rear end is going to have a lot of pedal induced bobbing if the shock does not have some kind of inertia valve or propedal type valving ala fox..
It's going to have either a preload or lockout, if I can work out the lockout system I'll do that but at the moment I only know about preload.
You're going to want bigger than 28.6mm for an aluminium main triangle. Look around at some production bikes.
I think I've only ever seen downtubes bigger than that. I might make that bigger though, not sure yet
Had a bit of a scribble... hope this helps!
Believe it or not but I get it
And I know how it feels when you can imagine but can't draw. It's been happening alot on this design so far
I'll work on a new pivot now and try and incorporate this.