thinfourth Posted April 28, 2005 Share Posted April 28, 2005 Okay i have some nice new shiny discs sat here and i am going to attack them with a lath to get them down to minimum thickness. I also fancy doing a little bit of pyscho driller on them. So any ideas on size of holes placement, pattern etc. Sod the heater wheres my shades Link to comment Share on other sites More sharing options...
wonkey eyed barmaid Posted April 28, 2005 Share Posted April 28, 2005 i drilled mine in a spiral pattern. 5 holes in each 'arm' - 6 arms in all = 30 holes. holes are 5mm i think. but you need to go round them all first and do a 1mm pilot, then the 5mm hole, then countersink them slightly with a 15mm bit or something to take the burrs off. Link to comment Share on other sites More sharing options...
Manxseven Posted April 28, 2005 Share Posted April 28, 2005 Is there any benefit to this apart from the weight saving 🤔 Are you not reducing the pad area of the disc? Interested as I have a nice new pair of shiny discs as well. L7 BDA Supersprint Joy here 😬 Link to comment Share on other sites More sharing options...
oilyhands Posted April 28, 2005 Share Posted April 28, 2005 The cross drilling is to disperse gas build up when the pad material is vaporised as the pads get very hot, this prevents the pads 'floating' on a cushion of gas and losing their effectiveness. Link to comment Share on other sites More sharing options...
wonkey eyed barmaid Posted April 28, 2005 Share Posted April 28, 2005 weight saving! now thats getting a bit extreme... its about dispersal of heat and gases to stop the pads fading Link to comment Share on other sites More sharing options...
Manxseven Posted April 28, 2005 Share Posted April 28, 2005 Thanks Is it worth doing the rear as well 🤔 L7 BDA Supersprint Joy here 😬 Link to comment Share on other sites More sharing options...
thinfourth Posted April 28, 2005 Author Share Posted April 28, 2005 it looks more bling as well :) Sod the heater wheres my shades Link to comment Share on other sites More sharing options...
Billyboy Posted April 28, 2005 Share Posted April 28, 2005 Please be aware - If you decide to do this and you are involved in an accident and the accessor notices "HOME DRILLED DISCS" OR discs NOT designed to be drilled you will be up the creek! with no visible means of paddeling! I have some experience many years ago of a customer of mine! the disc collapsed under braking from about 100mph or so....................very lucky for him only his car was damaged! and no other parties involved - the AA chap who towed his car to me did notice however! Are you really going that fast? If you are then buy some tarrox items or the like! plenty of em out there! OMO of course! Link to comment Share on other sites More sharing options...
Frying Pan Posted April 28, 2005 Share Posted April 28, 2005 I can't help thinking it's a bad idea to DIY on something like this (not based on proof, just gut feeling!)... Try someone like PowerStop here to see if they sell pre-drilled discs. Guy PS I agree that they look bling See some pictures of the build here. 5000 miles completed! Link to comment Share on other sites More sharing options...
Nifty Posted April 28, 2005 Share Posted April 28, 2005 Hi Spec sell crossdrilled or grooved discs for a Caterham at a decent price. Keep off the straight and narrow 😬 Link to comment Share on other sites More sharing options...
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