Title says it all. Can't tell from the rule book.

TIA Alan

 

Im pretty sure they are legal even though the rulebook doesn't specifically state that. Plus, it's impossible to tell a cryo-treated rotor from a non cryo-treated rotor.

 

Technically, No (it doesn't say you can, so you can't).

But, as Matt mentioned, there isn't a way to differentiate cryo from non-cryo.

 

My understanding is that coatings and platings are not legal. However, since cryogenically treating a rotor does not put a coating or plating on the rotor, that it is, in fact, legal by exclusion.

Andie

 

From the Solo Rulebook:

13.6 Brakes
A. The make and material of brake linings may be changed.
B. [SS braided lines] on all cars manufactured before modle year 1992.

That is all it says.

 

Do cryo-treated rotors make that much of a difference for a SoloII car? My understanding is that cryo-treating reduces the rotor's tendency to warp and crack, but I wasn't aware of any performance benefit otherwise. Have you had rotor-life issues previously?

 

Technically I think Crack Monkey's right. It's not in there, so no go.

I'm curious if you've had problems with the brakes too - or are the same brakes seeing duty on road courses?

 

Warping -none yet but I consistently warped rotors on my delSol. Of course, the ITR has much better brakes and I have learned to drive better. But I am going to start LFB next season and may be heating them a lot more.

I've begun upping the ante on the whole brake system with better than stock pads, better than stock fluid, speed bleeders and thought this might be a logical step.

Regards,
Alan

 

I'm running a set of cryo'd rotors with Porterfield R4 pads (F and R), and it seems to have made the rotors wear noticably less.
However, I am comparing the R4 & cryo'd rotor set-up, with running Porterfield R4E pads on non-cryo'd rotors (which really "machined" the rotors during street use). FWIW

 

This is how I see it too. I can't see how anyone would protest you over this, unless they are the largest ******* ever.

 

There are a few out there, especially at the National level...Alan, knows as well as anyone.

 

Where did you get your cryo'd rotors and how much did it cost.. I EAT rotors! Might wanna give them a try..

 

Corey, these rotors were purchased from Porterfield for about $110 ea. (they send them out to get treated at about $30, per)

I've recently spoken with Dean at Applied Rotor Technologies (see post https://honda-tech.com/zerothread?id=74080 ), and we were discussing a price of $85 ea (F/R) for non-slotted/cryo'd/nickel plated (washed) rotors (still about $30 per for the cryo treatment). /Ed

 

If road racing, YES.

17.37. CRYOGENIC TREATMENT
Cryogenic treatment of components is allowed unless specifically
prohibited in the category or class preparation rules.