Slotted vs Plain Discs

[OrbitalEllipses]

Originally Posted by JRitt

Hi Guys,
Here is something I wrote for our blog a while back:
Drilled vs. Plain vs. Slotted brake discs

I think that summarizes it pretty well.

Would you mind expounding upon us the pros and cons of external vs internal fluid crossover tubes?

[Mikepage]

Formula 1 use plain disk http://www.formula1.com/inside_f1/un...port/5284.html

I know they are in fibre composite but anyway...

[JRitt]

Originally Posted by OrbitalEllipses

Would you mind expounding upon us the pros and cons of external vs internal fluid crossover tubes?

Sure.

External crossover tubes / pipes

Pros

• Easier to bleed- air bubbles don't get trapped as easily inside the external pipes
• Caliper can be easily swapped to leading or trailing (switch the pipe with the bleed screws).
• Caliper is less expensive to manufacture and machine with external tubes
• Easy to repair if damaged- remove the pipe and replace it
• If debris gets inside, it's easy to remove- take the tube off and clean or replace

Cons

• More parts (and part numbers) add to the complexity of the caliper...basically more bits and pieces to be broken and replaced
• Since it is exposed, pipe can get damaged during a wheel change, or by road/track debris (rocks, pieces of other cars, etc.).
• Adds a slight amount of weight
• limits caliper design to a more conventional rectangular shape

Internal crossover tubes / pipes

Pros

• Allows for asymmetrical caliper design (AP Racing Radi-Cal is a good example)
• Reduces possibility of crossover being changed during a wheel swap or by debris (this is one of the reasons why you see internal in a race series with frequent wheel changes (NASCAR), or in rallying).
• Reduces weight- Also critical at the higher levels of racing
• Reduces number of spare parts to hold on hand

Cons

• Can be more difficult to bleed- air bubbles can get trapped in the recesses of the calipers, and generally tougher to get that air out
• Caliper is more intricate and expensive to manufacture
• Can't easily be swapped from leading to trailing.
• Would be more difficult to remove any contaminants if they got inside
• Caliper is trashed if crossover section gets crushed

[PoWn3d_0704]

I bought a BBK from Wilwood and really wanted the drilled rotors for the bling, but y'all convinced me that they crack, so I settled for slotted rotors for just a bit of bling, while staying as stong as possible.

I really like the idea of using the slots as a gauge for rotor replacement.

[Model Citizen]

Originally Posted by Andrew025

Instead of asking "blanks vs slotted/drilled", ask yourself why you think you need to upgrade/change your rotors.
What are you trying to achieve?


All I know is, I'm buying some spatulas now.

I had a hard tim tracking down the specific silicon ones locally.

Ended up finding at bed bath and beyond $10 each.

Didnt like how all the walmart ones couldnt be bent as desired

[Andrew025]

Originally Posted by Model Citizen

I had a hard tim tracking down the specific silicon ones locally.

Ended up finding at bed bath and beyond $10 each.

Didnt like how all the walmart ones couldnt be bent as desired

I just ordered some replica ebay spatulas.
Full review in 60 days when they get here from China.

[2point0]

Originally Posted by Andrew025

I just ordered some replica ebay spatulas.
Full review in 60 days when they get here from China.

Will you be making pancakes? I want pancakes!