Why should we avoid drilled rotors?
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Why should we avoid drilled rotors?
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https://www.youtube.com/watch?v=78wbht355R8Quote:
Originally Posted by ozgti
They are more likely to crack (hairline cracks around the drilled holes)Quote:
Originally Posted by ozgti
The drilling process sets up stresses in the metal which lead to hairline cracks radiating from the drill holes.Quote:
Originally Posted by ozgti
if the holes are part of the forging process and stress relieved after maching, they are OK.
The holes can also fill with brake dust, causing hotspots which lead to cracking.
Every motorcycle I've had has had drilled rotors. They have done track days, been subjected to greater braking forces than most cars and never had an issue. I'm calling "male cow faeces" on this one.
Bike brakes are out there in the open air.
Car brakes are more suceptable to heatsoak, and a general lack of ventilation when you push them beyond their capabilities.
They must be all city drivers wasting their lives in traffic , still have original front brakes with 180,000 km , rears replaced at 160,000km.Quote:
Originally Posted by donweather
Do what you want.Quote:
Originally Posted by Antiplastix
Motorcycle brakes are generally much thinner, solid (rather than vented), floating and a different metallurgy to car rotors. Motorcycle rotors are generally dealing with ~150-300kg of mass, rather than 1000kg-2000kg.
As I said, if the holes are cast/forged in place and stress relieved (like on a Porsche) they are fine. If they are machined (drilled) then not so great although for looks and general bopping about the suburbs they are fine.
Google it.
DBA (Oz brake company) even mention the problem in this article:Quote:
Originally Posted by Antiplastix
Rotor Damage | Basic Guide Pt 2 - Disc Brakes Australia
Quote:
Originally Posted by DBA - Rotor Damage