so, anyone here making bushings for cb350/2 swingarms??? ive heard oilites the way t' go. or somekind of impregnated brass or copper or something. anyone???? i got a guy whos gonna make em for me, but if some one already has em, or does em......frank?
I've made a few sets out of the oilite. Neat stuff, doesn't look like it has oil in it...but when it gets hot the oil comes right out...I've learned that welding too close to the stuff or powdercoating a SA that had them installed.
Often off the shelf metric bushings will be very close, just requiring a little bit of lathe work to get them right.
I fabbed an oven and used the guts and coils from and old electric oven for a heating element. After a while the thermostate broke so I just use a breaker mounted on the oven to turn the coils on and off (one or both) and a oven thermometer.
Works pretty good. I have one of the cheapo guns...works ok for the amount I use it.
However...I powdercoat less shit all the time...on a race bike you have to be careful...the stuff is a tremendous bitch to remove if you have to weld something. Anything you think might ever have to weld on shouldn't be coated. Just painted.
I'm slowly gravitating towards black paint on parts and gray primer on the body work...these are race bikes, not show pieces. I was spending way too much time trying to make paint look good and worrying about crashing something.
There's a guy on the SOHC4 forums (Mark Paris) that offers a custom bushing service for those of us without lathes, for about $80.
The problem with the generic bushings is that the inner steel sleeve wears and then the new bushings fit all sloppy. I tried that and when I realized what would happen I just sent them to Mark. He polishes down the inner sleeve (not hardened, thanks Honda) and then makes bushings to fit.
ever see how they make an oilite bushing? It starts as powdered metal in an oil bath and then the compress it until the metal forms a soild piece with the oil captured in the pours of the metal. As it heats up through friction the pours expand and the oil comes out. Because it started life as a powdered metal the final bushing is very pourous.
A friend of mine with an industrial supply company took me to where they manufacture them...it was friggin awsome.
chris has some sa bushings that hoyt made him. they have some what we think are old chrysler piston pins as cores, then the bushings cut to accpt those and be inserted into the swingarm. the guy did some weird asses shit. very cool. so the skewer runs through the pin center thats hardened and like 2"long. pretty cool.
I use "machinary spacers" for the cores sometimes...typically they are hardened and can be had in various metric ID's and OD's. But they are short..takes about two per side. But then that leaves a little goove between them if you want to add a grease fitting on the SA you can pump grease between the two bushing and into the groove between the two cores.