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Disc drilling pattern, thoughts.

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Oddjob:
Fancied a drilled and slotted pair of discs for my 500 but can't find someone to do it. So after looking around I found someone who will do both discs for £58 approx and for another £10 will match a pic of another pattern if you find one he doesn't do.

So I spotted this pattern on ebay for cast discs and thought it looked ok. What do you think? Sent it to the fella who's doing the job and he reckoned he'd need another box of 5mm holes  ;D ;D ;D

Johnwebley:
Do you want to lighten them,or improve braking in the wet and dry?

My thought are there are to many holes,

It will reduce the friction area of pad/disc,

Could increase the lever pressure needed to stop,


I would also slot the outer holes, so in the wet the water will centrifuge out



Sent from my SM-A750FN using Tapatalk

Oddjob:
Wet weather improvement John.

Still plenty of metal left for pad contact I'd have thought John, plus I'm adding a second disc so there should be a big improvement over the standard one.

Not a great lover of drillings which have just a few holes and getting stainless discs slotted isn't easy to source, been looking for a while now. Thought I'd found someone until I mentioned they were stainless and they said no.

Sesman:
Ahem….

I have no idea if this is wrong or right…but it works.

As for weight saving…forget it. It just doesn’t make a meaningful performance difference.

Sesman:
Incidentally all those holes where drilled using a single 5mm drill. And no, they are not countersunk. I’’ll try to get the drill details.

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