"swiss cheesing" rear brake rotor

[Punx Clever]

yup. and i'm not talking retail price... i'm talking cost to manufacture.

now to put on my gear-head hat.... don't you want a nice, shiny, high performance, free-floating brake rotor?

[junior varsity]

The way I look at it, the engineers who made the rotor to begin with were given (or came up with) criteria for the rotor.  Most likely acceptable safety margins, performance requirements, max weight, and a price point.  Strength of the material chosen and cost for that material would be considered.  The come up with a basic design (considering cost of manufacture, performance characteristics, etc), figure out the major stress areas, then apply that to a table of materials.  Lifespan is considered at the stress levels to come up with the cheapest material that satisfies that design, and go with it.

Stress is not great on a rear rotor, especially in comparison to front rotors, the surface has to deal with heat but its not incredibly high in comparison to the front

. There's not a lot of considerations for rear brake rotors on Ducatis. The biggest factor comes from the penny-pinchers: We need cheap rear rotors. They are not a substantial part of the sport motorcycle riding experience. This is reflected in the style carrier used, the simple circular shapes and small holes. The design is essentially "XXXmm diameter, thickness of Ymm, 6 bolts".

[Airborne]

You think people that work in these aftermarket cnc shops are engineers? I think not.

drill away, its only the rear brake.

[CCEMN1]

You mean to tell me there are actually people on here who use the rear brake?
I think the only time my foot's been on that peddle is at a stop, on a hill!   

[COP TZR]

You mean to tell me there are actually people on here who use the rear brake?
I think the only time my foot's been on that peddle is at a stop, on a hill!  

I guess you're not doing high enough wheelies??  That rear brake will save you from flipping over.

[COP TZR]

Ok as an update to this post, I just came back from a local machine shop.  For $20 and 30mins of their time, they had taken some measurements, spun up a CNC program, inputted it into the CNC machine.  Clamped down the rotor and went to town.  The CNC machine was so accurate with the cutting and at the same time the rotor was being sprayed with a white liquid which must help the cutting bit and keeping materials cool.  I had them drill 12 x 1" holes evenly around the rotor.

It came out perfectly, done on the cheap, lighter, and looks bling and its a modded OEM part 

I'll try to get pics up

[pennyrobber]

Sounds like a deal to me. Let's see them pics.

[TAftonomos]

 

[Bizzarrini]

Is that a cnc of your original rotor?

[battlecry]

Bravo.  That puts to shame all the late night garage drill press work on the Campy Record stuff back in the seventies.   

Makes me feel old generation old.   I think I'll go oil my Brooks saddle.

[TAftonomos]

Is that a cnc of your original rotor?

Sure is.  Then I went out and did something crazy.   Bought me some surplus Titanium, and had them copy the rotor into that.  Talk about light (and worthless cept for holding the bike on a hill!) 

[Raux]

have you tried different pad types?

[CCEMN1]

I guess you're not doing high enough wheelies??  That rear brake will save you from flipping over.

Nothing personal, but getting a wheelie that high, you're only losing speed. If you're wheeling on purpose, you should be on a Gixxer, or Buell, but that post was before I realised Squids are also piloting Duc's now and that this was a Squid Site!

[pennyrobber]

Nothing personal, but getting a wheelie that high, you're only losing speed. If you're wheeling on purpose, you should be on a Gixxer, or Buell, but that post was before I realised hooligans are also piloting Duc's now and that this was a hooligan Site!

Fixed it for you.  

[Punx Clever]

Nothing personal, but getting a wheelie that high, you're only losing speed. If you're wheeling on purpose, you should be on a Gixxer, or Buell, but that post was before I realised Squids are also piloting Duc's now and that this was a Squid Site!

Does it still count if it's a controlled environment and NOT on public roads?  Or is that extra squidly for the added effort?