Finally got my blast cabinet up and running. I am using 80 grit glass bead for the media. The swing arm came out really nice! I have a long list of parts that need blasting, so I am realy glad I have this piece of equipment in my shop!
I'm not the best welder, but at least there's no porosity! I dropped of the wheels, drive hub, swingarm, and rear brake stay at the powder coating shop today. Looking forward to making the frame a roller so I can finish the fab work.
80 KZ750 H1 - the Kaw calf
79 KZ750 Twin - Miss Nov 2008 KZR calander
79 KZ750 Twin parts bike
78 KZ650 C2 Parts Bike
75 KZ400 Wife's old bike sold
81 KZ440 A2 LTD Wife's new bike
84 Honda 450 Rebel Wife's newest bike
heres a thread with a bunch of good info, sadly many of the image links are broken because they are hosted on photobucket, but if you go through it there is still plenty of good info. It is fine to use chromoly tube without heat treating as long as is is thinner than 0.125" just use standard e70 wire
When i braced my frame I used .065" wall chromoly.
That is a lot of good info on frame bracing. To be honest, I had never considered it before now. I am building this bike as a street bike, not a track bike. It's kind of a "resto-mod" with a vintage superbike theme. And yes, I am going with the Eddie Lawson tribute color scheme. I am no stranger to large fabrication projects, and I was Production/Quality Manager at a metal fabrication company for 24 years. This being my first retirement project, I think I am going to pass on the frame bracing. I would get too deep into making or buying a frame jig, and all of the other concerns when welding on a frame.
Great information on weld techniques and strategies! Thanks for all the pointers.
The idea is that as you stiffen up the front end with a fork swap and brace the swing-arm the flex under load these components used to have is now translated as more load to the frame. Bracing helps address that issue. Its certainly not required for a street bike, but its a nice touch and wont cost you much but your time. Plus It can really give the bike a beefy look if you reinforce the steering head to the main down tube. If done correctly no jig is needed as most points you are welding on are already triangulated. With your experience im sure you are well aware, tight fit-up and welding evenly side to side can mostly negate warping. I didn't make a jig on the 3 frames I have braced and it was fun to do. really gave the front tough profile and the bikes handle very well. The other thing you can do to stiffen up the chassis is to remove the slop in the factory engine mounts by over-sizing the bolts for a tight fit and using thick aluminum plates for the mounts
I only brought it up because you clearly got the skills. party on.
Yesterday I received my Delkevic 4 into 1 exhaust system. First inspection shows pretty good manufacturing. It will be quite a while before the motor is in, so we will see how the fit is when I get there. It looks good so far!