captain awesome
Active Member
What's the plan for the tubing the rear motor mounts attach to? I can't imagine it will just be left as is, but curious what you have in mind.
XS650 Cafe - Build #4
- Thread starter ncologerojr
- Start date
captain awesome said:
The new rear tubing section will be getting some additional cross braces, but I am waiting for now. I plan to mount some electrical components down there so I would like to make the supports and component mounts work together.
Is that what your asking?
captain awesome
Active Member
ncologerojr said:
I think so. It just seems like there is going to be a heavy amount of stresses put in that area from the swingarm pivot and it currently isn't tied in with the lower cradle. I can't imagine a small amount of tubing will make much difference in electrical placement, especially if you go pma.
captain awesome said:
Well, the swingarm pivot will also be tied to the new frame tubes or cradle. I mentioned that several times earlier in the thread, I just haven't gotten there yet. I need the swingarm mounted and perfectly square in the jig, then I can make the pivot to frame tabs. Before I could mount the swingarm I needed to make the other rear engine mount/pivot section. See what I mean?
The design is similar to Mule's xs frames, but he completely eliminates the bottom engine mount and frame section.
The small amount of tubing doesn't necessarily make a big difference in electrical placement, but why not try to think ahead a bit and make a cleaner more professional product?
captain awesome
Active Member
Sorry, I went and re-read some earlier replies that stated your intentions. Reading comprehension is often lost on me. Carry on.
captain awesome said:
Haha no problem. I like when people question my designs/plans. It has definitely helped me spot some errors in the past.
I've made some good progress this week. I got on the lathe and cut some spacers for the swingarm pivot, and spacers for the bolts holding the swingarm to backbone/engine mount. I also made the upper shock mount. No pics, sorry.
Then, after confirming that everything is still square I made the tabs connecting the swingarm pivot to the frame.
Now I need to get my wheels laced up and it's a roller!
Then, after confirming that everything is still square I made the tabs connecting the swingarm pivot to the frame.
Now I need to get my wheels laced up and it's a roller!
I'm getting a lot of questions/pm's about my swingarm mount, so here is a pic with the swingarm removed.
The center support is cut from 1/4" steel plate and connected with 1" .120 wall tube. It bolts to the backbone at the two visible points and both top and bottom rear engine mounts. The pivot axle passes thru 3/16 steel tabs on the frame tubes on each side. This connects the swingarm pivot to the backbone, engine and frame tubes. This is very similar to the design used on some Nortons.
Thanks again for following, hope this clears things up!
The center support is cut from 1/4" steel plate and connected with 1" .120 wall tube. It bolts to the backbone at the two visible points and both top and bottom rear engine mounts. The pivot axle passes thru 3/16 steel tabs on the frame tubes on each side. This connects the swingarm pivot to the backbone, engine and frame tubes. This is very similar to the design used on some Nortons.
Thanks again for following, hope this clears things up!
Made some rear wheel spacers on the lathe and the final frame piece fitted. I put everything together for a test fit and it's looking good. The difficult fabrication is pretty much done!
treitz said:
Thanks
Quick update.
With everything finish welded the bike is off the jig and sitting close to its final stance. Now I can start on the fun and easy stuff like the subframe.
With everything finish welded the bike is off the jig and sitting close to its final stance. Now I can start on the fun and easy stuff like the subframe.
Posting while I'm working in the shop tonight. Making progress on the subframe.
Finished up this morning.
Thanks. Here's one more closer look at the tube work.
crazypj said:
Thank you.
They are a bit shorter, 720mm with 30mm triple clamp offset. Earlier in this thread I posted a simple cad drawing showing the new geometry with the gsxr forks. Although, I should have a bit of a larger actual trail number than in the drawing when all is said and done, which is a good thing. There are also aftermarket triple clamps that I can run if more trail is needed.
