jchek779
Leave the gun. Take the cannoli.
Re: 74 RD250 - Anything more than 2 strokes is a waste
OK guys - it's been a little while and figure I owe you (and me) an update. I made it over to the Bull City Rumble in Durham, NC this past weekend to check things out and get the creativity going again.
I needed to spread the lower linkage pull rods out a bit to clear the shock spring as the rear susp articulates. I grabbed some M12 washers and welded them to the pull rods. Problem solved, and I get to melt things together with the TIG. As I mentioned in my intro thread, the purpose of this project is to build my fab/welding skills and learn a bunch of cool shit.
I also had all of my engine cases/covers and carbs vapor blasted by MotoBlasting in Charlotte, NC. I'm pretty happy with the way they turned out. The pics below show the surface finish following the vapor blasting - I'd call it around wet sanding with 1000 grit...just without the sanding marks. My plan is to add some grain via scotchbrite to the entire engine and leave it with a satin finish.
To give the grain/satin finish, I picked up some 3M Cross Buff pads that go on the die grinder. It's basically maroon scotch brite turning 18,000RPM. These things are sweet. The oil pump cover below in the 2nd pic has the top half done with the cross buff and the bottom half with the vapor blast finish. I also did the top engine case half.
OK guys - it's been a little while and figure I owe you (and me) an update. I made it over to the Bull City Rumble in Durham, NC this past weekend to check things out and get the creativity going again.
I needed to spread the lower linkage pull rods out a bit to clear the shock spring as the rear susp articulates. I grabbed some M12 washers and welded them to the pull rods. Problem solved, and I get to melt things together with the TIG. As I mentioned in my intro thread, the purpose of this project is to build my fab/welding skills and learn a bunch of cool shit.
I also had all of my engine cases/covers and carbs vapor blasted by MotoBlasting in Charlotte, NC. I'm pretty happy with the way they turned out. The pics below show the surface finish following the vapor blasting - I'd call it around wet sanding with 1000 grit...just without the sanding marks. My plan is to add some grain via scotchbrite to the entire engine and leave it with a satin finish.
To give the grain/satin finish, I picked up some 3M Cross Buff pads that go on the die grinder. It's basically maroon scotch brite turning 18,000RPM. These things are sweet. The oil pump cover below in the 2nd pic has the top half done with the cross buff and the bottom half with the vapor blast finish. I also did the top engine case half.