For the Super Cars race, I picked a Ferrari Testarossa that I had in my stash. It was old and beat up with some Ultra Hot wheels, but the axles were shot. Figured a basic wheel swap and added weight would be sufficient. It had been a while since I've modded anything so it seemed good for getting the rust off.
No real amazing insight here, just a story of how I went about taking this thing apart and adding a few things. If there's anything I took away from this one, it's using screws to keep the thing together rather than the typical epoxy. It let me do some tests with weight before settling on a final state.
My first disocvery was the lower rear of the car was plastic...two mold plastic, to be exact. I didn't pay that close attention to it when I picked it, but whatever. I thought the lack of weight might be a problem but made up for it later.
The plastic turned out to have its benefits, like creating a perfect little pocket for some weight. It kept the weight a little higher than it would otherwise, so hopefully that will help.
After some more trims of plastic, I had the thing mocked up with some FTEs taken from another Ferrari. Looked good to me.
Next step was fixing the FTEs in place. I mixed up a few dabs of JB Kwik as usual, put it on the chassis and them laid it on the axles while on the RLD Alignment Jig and waited. I learned to put the chassis upsidedown on a jig to get the most out of gravity, but I've been asked if the epoxy drips. You can see here that the epoxy does "sag" but it doesn't drip. It cures fast enough and is thick enough (it shouldn't be too runny).
Once the epoxy set, I could flip it over and work on getting the interior and weight into place for testing. I used hot glue to place the weights so they'd hold during test runs. Hot glue is great because it holds well enough but can easily be pried off without injury to the car. Just pops right off.
Next step was some test runs. I used drilled some screw holes into the body posts and then followed Matt's directions for "force tapping" with some 2-56 screws and it worked great. I didn't drill down far enough at first, so I used some small plastic washers to make up the difference. It turned out nice and tight. It's wonderful to have the ability to button up, test, and take apart without much hassle.
After a few runs and testing out some difference weight positions, I settled on final setup and glued everything that wasn't yet permanent. Super glue on the plastic parts and epoxy on the metal.
I have my doubts how well this will do on Bootleg Run. It's a road course and I wonder if the weight will actually help or harm performance.
And of course, when I tested this thing on my drag track, it didn't always win - even against stock cars - which is the story of my modding life. A few hours of fun playing with tools thinking you're making a premium car only to find out you're no better than a generic coupe.
But whatever...it's fun to mod all the same. I'll report back with performance after the race!