The Red Drift ///Machine

[M3dragon]

nice build

[bigjae46]

This damned front splitter...think I have it figured out. I was trying to stay away from using steel to mount the splitter but aluminum is too soft.

I welded some threaded inserts onto a steel plate. The mounts are height adjustable.



I attached the brake ducts to the front reinforcement bar. I used some L brackets from home depot and bolted them on using riveted nut-serts.



First two attempts at the carbon splitter...let's say I learned a lot. Biggest issue was the top had a lot of air trapped in the finish so the carbon didn't get completely wet out. I punched holes in the foam core and got much better results...







Better mounting. Using some binding posts and a urethane 2 part adhesive to mount the hardware to the splitter. Here it is! Comes on and off much easier.

[bigjae46]

The front lip looks great! Im planning on doing the same thing over the winter but just with a wet layup. Do you have a oven big enough for that splitter?

I was going to try a vacuum infusion but wasn't sure if my vacuum pump could handle it. I did a wet lay up and then pulled a vacuum through a bleeder cloth.

The epoxy resin I use cures at room temp. You get some more impact resistance and strength with an oven but it is not necessary.

[SandeepM3]

The front lip looks great! Im planning on doing the same thing over the winter but just with a wet layup. Do you have a oven big enough for that splitter?

[bigjae46]

Wow, lots of great work with this build! Also liking the composites work.

For the splitter are you going to be implementing steel or aluminum inserts into the layup for fasteners? It would make the mounting points a lot stronger, and a lot less prone to tearout.

For now I’m still going to run a bolt through the panel.

I’d like to attach a stud to the splitter so I can just spin a couple of nuts off to remove the splitter. I think I know what adhesive to use and it should be plenty strong. Just don’t have enough time to mess around with it right now.


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[timmo]

Wow, lots of great work with this build! Also liking the composites work.

For the splitter are you going to be implementing steel or aluminum inserts into the layup for fasteners? It would make the mounting points a lot stronger, and a lot less prone to tearout.

[bigjae46]

Its time to start on my carbon fiber splitter. First off...took awhile to get used to having a splitter on the car. I've been through 5 plywood splitters. Also takes some time to figure out how to mount the splitter. I've experimented, tested and think I have a good solution.

First...make the splitter. Using a 3/8" foam core with 1 layer of 12k spread tow carbon on each side.

Foam core cut to shape



Making a spare



Beveling the bottom edge with a angle grinder and sanding sponge

[bigjae46]

Making the front bumper removable. You can find long stud push button quick releases on eBay for $10 a set. You need something about 4" or 100mm long

[bigjae46]

Lately...the car has been having stuff break. I had noticed my water temps have been getting higher and higher the last couple of events also had a squealing sound at start up. I looked at the coolant (distilled water + water wetter) and noticed it was gray. I decided to check the water pump...the pulley had some play so I pulled the pump to find this.




Then my red battery light started flickering. Here is my alternator regulator. That rectangular piece is the brush that should be inside of the regulator.




Next up...COTA with Chin. Damn its LOUD!!!

Best lap was a 2:34.69 on NT01s, theoretical best is a 2:30.9. I am very happy with that. I have an easy 2 seconds in driver improvement. I could not go over 140mph because the front would start porpoising (sp?) because my plywood splitter isn't stiff enough. Coolant temps even in hot weather (not the HOTTEST though) never got above 195 all weekend. Oil temps...still climb to 275-280. I need to admit defeat on my secondary oil cooler idea.

Post COTA list

1. Ditch my "unique" secondary oil cooler setup for a more normal setup.
2. Need to make a stiffer splitter and better mounting
3. Found leak from the input shaft seal on my steering rack

Oil cooling. I'm going with a common mounting location. I was concerned with the cooler affecting coolant temps but based on recent data I should be Ok. I also deleted the radiator fan.

[bigjae46]

Awhile back, I scored a 3.73 LSD diff from a 635CSi. I installed a 4 clutch conversion from racing diffs and had the bearings, races and R&P REM polished. Building it wasn't too difficult. The hardest part was the crush washer. I used an impact and a holder that I bolted to the input flange. I would give it a hit with the impact and check the preload. It takes a while to get any preload and then once you get some preload it goes from 0 to 30 in/lbs in about 3-4 uga-duga's. Patience is the key.

I reused the shims that came with the case. Came out spot on.

[bigjae46]

Video from June. Testing out my plywood splitter v2 and a new 4 clutch LSD. Tried not to beat on the diff and slide the rear too much. I've added some compression and rebound on the front. The front end wouldn't respond as well as I'd like in the slower turns. We'll see how it turns out for my next event either Aug 29 or Sep 12.

[bigjae46]

Here's a flyby from a couple of months ago. My car is LOUD! You can hear it throughout most of the video.

[bigjae46]

Starting to learn how to do infusions.

First part I made was a gauge panel. I used 1 layer of 3k CF, 2mm soric core and 1 layer of 3k CF. It was great until i had to drill holes. The drill would penetrate the CF layer and the soric would force the drill bit to walk. So my holes are not lined up. Lesson learned.



I made a divider that splits the air going to the oil cooler and radiator.

[bigjae46]

Final wiring harness thinning. This took awhile. I tried to install a manual brake light switch to replace the hall effect switch so I could delete the LCM. The hall effect switch is tied to the ECU which uses the hall effect as an input to control the solenoid on the brake booster. LCM and hall effect back in car. Still...wiring harness looking pretty light







Painted my wheels technoviolet. They look great but not sure if they look really good on red.

[bigjae46]

Onto the aero. Going with plywood for cost. The challenge here is minimizing weight. First attempt, it made a difference but there was too much flex.






2nd attempt with the plywood splitter. Going with 1/2" and 8 mounting points (added 2 to the sides since this pic). Also added an air dam. It worked a lot better! Ran consistent low 1:47/high 1:46 at MSR Houston in 90+ degree heat with
NT01s. Best time was a 1:45.899



Making chassis mounts for the rear wing. No way around it...need to cut holes in the trunk lid.





Installed a blower in the intake for the secondary oil cooler. I think it helped. Probably should just install the C&R or CSF cooler.