Slotted rotor pics for viewing

[steve911]

Seeing the winter here was harsher than normal, and I got more bored than normal, and spent more on the family for Christmas than normal, I didn't have enough left over to buy a set of slotted rotors that I really wanted.

I found a brand new set of take off rotors for a song. I then layed out a pattern and stuck them onto my brothers CNC mill and VOILA a set of slotted rotors for less than $100.00 with OEM quality rotors to boot, no Chinese specials. The slots are .005 shallower than the minimum thickness of the rotor so when the slots are almost gone its time to change rotors. It took less than 2 1/2 hours to mill the slots in all 4 rotors on both sides.

I was really surprised at the precision the OE rotors were mfg'd to. when I clamped the rotor down I had less the one half thousandth of flatness deviation across the whole surface of the rotor, whether the hat was up or down.

I attached link to a pic of the left rear rotor. I used Eastwood's caliper paint and as you can see it matches rather well to the caliper.

Can't wait until the roads finally clear and the temps warm up to test them out.

 

[bigmike32172]

That look's great!
Now how about drilling some holes in them?
If you can get that down, then maybe I will send you mine so I can have a set.
Some idiots on E-Bay that I paid a month or so ago, reneged on filling the $200 order for a set for my gen 3.
They were using stock gen 3 rotors and doing the same thing as you are, but they must have lost their machine shop.
If you start doing this on the side for around the same price, you could probably end up with a few extra grand every month, as everyone with a gen 3 would love to have a set, but don't want to pay the ridiculous over inflated price for after market drilled slotted rotors.

 

[SylvanSRT]

Drilled rotors are not a good idea they will crack under even moderately hard use. Just remember that the vipers that won LeMans and Daytona had solid rotors!

 

[bigmike32172]

Drilled rotors are not a good idea they will crack under even moderately hard use. Just remember that the vipers that won LeMans and Daytona had solid rotors!

This is like the second time I've heard this now, although the other guy said I would be fine as long as I don't plan on tracking the car.
Maybe with my luck I should stick with stock ones...

 

[ViperJohn]

Drilled rotors are not a good idea they will crack under even moderately hard use. Just remember that the vipers that won LeMans and Daytona had solid rotors!

Yeah, but cross drilled rotors sure look purdy....

 

[ILLSMOQ]

Nice job on the slots...not digging the red though...and it's gonna turn brown after a day of driving.

When I put the HRE's on, there was a rust ring on the rotors where the hub of the wheel mounts up, so I painted them with Duplicolor cast coat iron - DE1651 - high temp spray paint.

 

[YellowViperSRT10]

to much red for me.

 

[Alabaster Mamba]

They look great! Maybe you could show everyone what they look like with the wheels on as well. In doing so, it would give a good contrast to see how much red is showing through the wheels. I think you did a great job myself!!

 

[Volltage]

Steve now you just need to paint those E-brake calipers and you'll have it complete. Nice work.

 

[steve911]

With regards to the turning brown comment, I have a heat treating oven that I used to experiment with the Eastwood paint. I cleaned up and then sprayed a couple of old Dodge Magnum rotors and put them in the oven at 350 degrees for 2 hours and there was no color change. I then stepped it up to 450 degrees for another 2 plus hours and still nothing. It might have taken just a little of the sheen away, but there was no browning. At least yet.

After looking at the pics some more, I would have to say that the closeness of the camera and the flash makes the red seem somewhat fluorescent. It really isn't. I can see where some would say it is too much red becaause of the way the picture turned out. I painted the edge of the rotor just for detailing sake as even though my car has less that 4000 miles on it, the normal corrosion that occurs on cast looks like crap and I wanted to prevent or at least slow it down. The next set that I do I would paint it black instead of red.

 

[ILLSMOQ]

With regards to the turning brown comment, I have a heat treating oven

brown from brake dust....the grey colors hide the dust best. Even black will look dirty after a day or two of driving

 

[steve911]

I agree with you there sbout grey hiding dust better. Maybe the smoother coating will make it easier to get the dust off when I wash the car. I'll keep everyone posted.

 

[Racer Robbie]

To Steve911

You did a beautiful job. Heck you should start selling re-manufactured rotors. They are really nice.

Robbie

 

[ROGUE]

Looks like you used a square end mill to cut those?


If so, you did a fantastic job of destroying a perfectly good set of rotors purely for cosmetic reasons, well done. Not that you'll ever drive the car hard enough to worry about it.

 

[steve911]

I actually used a bull nose end mill with radiused corners so as to not create any stress risers, cause that last thing I need is to have a rotor crack.

 

[Fast Viper Dan]

Move to Cal. and I'll put you to work!
I will be cutting a set for my Gen II real soon. I was thinking slots alternating with a row of dimples using a ball end mill? Lefts and rights, both sides.