Re: Hot Tricks optima
Posted: Wed Apr 01, 2015 12:40 pm
That's not actually a very difficult job for simple flat parts like shock towers. As long as you have some 2.5mm or 3mm carbon fiber sheet, here's what I do:caesar wrote:Chassis and shock towers are going to be made in carbon fiber, just need to find someone to do it.
-Stick a layer or two of masking tape on the sheet; this is to protect it as well as give a surface to draw on.
-Place your original part on the masked carbon sheet and trace around the edges. Don't worry about screw holes yet.
-Cut along the outside of the traced edges with a hacksaw (for easy straights) and Dremel. I use a 1/4" drill bit to make holes at inside corners, then Dremel between the holes, to "connect the dots".
-Always err on the big side; cut just outside the lines, and never inside. You can clean all that up with a file later on.
-With your shock tower cut out, file all the edges smooth. Use your original part for comparison to make sure everything looks good.
-Put your original part on the carbon shape, and carefully drill your FIRST screw-hole, through the original and into the carbon part. This is your guide hole.
-Put a screw & nut through the guide hole and tighten the original & carbon parts together.
-If everything is lined up, drill a second hole; the parts being screwed together should help prevent any measurement mishaps because you're using the original as a template. Attach a screw & nut through the second hole. The 2 screws and attachment points will prevent any other drill holes from being out-of-place.
-Drill any remaining holes.
-Unscrew the original part, remove the masking tape from the carbon part and do some final, light filing. Lastly, I use 400-grit to sand the cut edges, making them nice and smooth.
Optional step: Color all cut edges with a Sharpie marker, then use a toothpick or angle-cut Q-tip stick to spread CA cement along all the edges. This gives the edges a nice gloss black finish and prevents delamination from happening.
I'd guess you could do a shock tower in 30 - 60 minutes, not including the optional edge preparation. It's a bit of work but it's not difficult.