Saving a 1980 750 twin.

The caliper mounts are a nice touch! I have one of those calipers that I want to try on the front of my DR650 project.

small update but the brakes are plumbed and cables shortened and routed.

So i have been thinking about the design for the muffler, and am wondering what size to make the baffle. The collector I made is 1.875"OD/1.75"ID. I see that Cone Engineering has their "quiet core" mufflers choked down to 1" and they also have the straight through mufflers. Should I make the baffle smaller than the collector? I can't find any 1.875" perforated tube, but I can find some 1.75" Thoughts?

i've got a cocktail shaker on a stepped pipe i built for a buell blast project.
it has a 1.750 in and out with a perf tube baffle with the bottom plated over.
looks like the baffle is prolly a foot or so long.haven't heard it run yet tho :pinch: so i can't speak to sound.
but that is a real common size for 650/750 twins and would at least be a good starting point.

leon

Looking awsome!

I might have to talk you into making some covers for my GPz.....

Fantastic!

I have been fiddling around with the foot controls. got the kick-starter painted with a new detent spring and ball, shifter and rear brake arm are drilled and painted. The stock brake lever was bent pretty badly from where the PO layed it down, so I bent it back with fire. I still want it a little closer to the motor but its much better.

The brake linkage is getting fouled by the new swing arm, so I am going to cut the tab on the brake lever where the linkage connects and move it out some. The problem this creates is that the brake pedal linkage mount is now no longer planar to the rear brake drum arm, and has to be bent into a dogleg to clear the swingarm. I mashed on the pedal pretty hard and it didn't seem to bend the dogleg linkage back hardly at all, but it still makes me wonder if its good. I'm thinking about making a new linkage rod out of chromoly and doglegging it. Thoughts?

i think i would use it and observe it for a bit and make my decision from there.

leon

I decided to get rid off the stock brake pedal push pad in order to bend the brake pedal tucked in closer to the motor. I turned a steel bung and knurled an aluminum the push pad, welded that on and modded the linkage mount.I already had some 1/4" - .065 wall 4130 laying around so I made a new linkage by TIG brazing a clevis to one and and threading the other, but the threads are kinda rough and shitty, which has been my experience in machining 4130 as well. I think I might cut those threads off and braze some stainless "all-thread" on.

That does look nice and tucked in. Interesting idea.

rear brake lever and linkage finished and painted. I also turned up and polished a bunch of brass washers on the lathe, for the footpegs, shock mounts, and steering stem bolt. I wanted to try and pull a little gold into the scheme since i put the gold stripe on the tank. Tons of little things have been finished. The list of remaining stuff is short. Here is a bunch of gratuitous pics of it in the sun for the first time in months.