tom tom Posted November 23, 2005 Report Share Posted November 23, 2005 i have seen pics of the knurling thing and it looks better than a gring and it looks as though it will hold better too but how do you do it? cheers tom tom Quote Link to comment Share on other sites More sharing options...
Walleee Posted November 23, 2005 Report Share Posted November 23, 2005 (edited) Its usually done on circular components with a lathe and a knurl tool Those two arms can be put closer together and its the round bits at the end which make the knurl, they have to made made of a stronger material than the components itself, of the component will flatten the knurl tool! Edited November 23, 2005 by jake1516 Quote Link to comment Share on other sites More sharing options...
JT! Posted November 23, 2005 Report Share Posted November 23, 2005 What the hell is knurling? Quote Link to comment Share on other sites More sharing options...
Walleee Posted November 23, 2005 Report Share Posted November 23, 2005 (edited) a knurl is what you put on a smooth round surface to give a bit of grip, check out the little rod below the tool itself in the above picture, the right hand side is knurled, while the left is untouched. They are knurled.... Edited November 23, 2005 by jake1516 Quote Link to comment Share on other sites More sharing options...
smelly joe Posted November 23, 2005 Report Share Posted November 23, 2005 it looks better than a gring and it looks as though it will hold better too Are you tinking of knurling your rim?? because that could be very hard to do unless you have one huge ase chuck on a lathe that you could fit your rim into (Y) Quote Link to comment Share on other sites More sharing options...
the big B Posted November 23, 2005 Report Share Posted November 23, 2005 Are you tinking of knurling your rim?? because that could be very hard to do unless you have one huge ase chuck on a lathe that you could fit your rim into (Y) yeah... you definitely couldnt do it the normal way. even if you did have a huge chuck it wouldnt work. im pretty sure that knurling would take too much material off of the rim, making it very weak and probably unusable. Quote Link to comment Share on other sites More sharing options...
MaXsteri Posted November 23, 2005 Report Share Posted November 23, 2005 A few possibly useful posts for anyone interested http://www.trials-forum.co.uk/forum/index....showtopic=53453 http://www.trials-forum.co.uk/forum/index....showtopic=31824 http://observedtrials.net/vb/showthread.php?t=12609 Quote Link to comment Share on other sites More sharing options...
the big B Posted November 24, 2005 Report Share Posted November 24, 2005 (edited) i read about it, and apparently thats not actually knurled. its just a really deep grind. Edited November 24, 2005 by the big B Quote Link to comment Share on other sites More sharing options...
tom tom Posted November 24, 2005 Author Report Share Posted November 24, 2005 i never seen a machine like that where would you get one from? tom tom Quote Link to comment Share on other sites More sharing options...
MaXsteri Posted November 24, 2005 Report Share Posted November 24, 2005 i read about it, and apparently thats not actually knurled. its just a really deep grind. I know that rim isnt knurled, but thats what a surface will look like. Also the thread on OTN that that pic is from has more knurling information (Y) Quote Link to comment Share on other sites More sharing options...
llandudno_trialsboy Posted November 24, 2005 Report Share Posted November 24, 2005 does this knurling actually work or is a grind better and easier? Quote Link to comment Share on other sites More sharing options...
Walleee Posted November 24, 2005 Report Share Posted November 24, 2005 It would work because it helps to increase the friction between the pads and the rims but its definately not easier than grinding. That rim does actually look like a knurl in that the 'grind' is patterned leaving lots of small squares, id be very interested to know what sort of grinder/grinding disk was used to achieve that finish.... (Y)-->QUOTE(the big B @ Nov 24 2005, 12:47 AM) ← i read about it, and apparently thats not actually knurled. its just a really deep grind. i just trawled through that forum, god so much crap its unreal.... Anyway, it was created in a CNC mill with a custom tool, 'anotherash' is the username of the person who did it. Quote Link to comment Share on other sites More sharing options...
Martin Grainger Posted November 24, 2005 Report Share Posted November 24, 2005 I think a grind would work just as well , from the look of it, and would be a lot easier ,but wouldn't mind trying it one day. looks pretty funky! :P Quote Link to comment Share on other sites More sharing options...
petit_pablo Posted November 24, 2005 Report Share Posted November 24, 2005 Most knurling ive seen has a smooth, rounded finish to it. Not sure how well that would work compared to a grind which is usually very rough. Quote Link to comment Share on other sites More sharing options...
tom tom Posted November 24, 2005 Author Report Share Posted November 24, 2005 ok so it is called knurling, and i still havent found out how to do it does any one know? tom tom Quote Link to comment Share on other sites More sharing options...
N.Wood Posted November 24, 2005 Report Share Posted November 24, 2005 :P-->QUOTE(the big B @ Nov 24 2005, 12:47 AM) ← its just a really deep grind. Good luck doing that to your rim with a f**king grinder :P Anywho, basically the tool shown up there has 2 super hard rollers on it. These rollers have tiny knobbles in them. You put the object you want knurling between the 2 rollers, and use the vice action to put them together onto your object. So you've got 2 pointy rollers of a very hard material tight against your softer object (i.e a rim). You then turn the object/rim in the rollers so they make little indentations onto the surface. You keep applying pressure to the vice part to push the indentations deeper into your rim. And you basically roll the whole rim through the rollers until the whole rim is done. The indentations on the rollers push in the material of the soft rim, leaving a series of tiny mounds and depressions. Any D+T department worth their salt will have one. Quote Link to comment Share on other sites More sharing options...
adamtrials Posted November 24, 2005 Report Share Posted November 24, 2005 (edited) whoops n.woods beaten me... Edited November 24, 2005 by adamtrials Quote Link to comment Share on other sites More sharing options...
Concussion Posted November 24, 2005 Report Share Posted November 24, 2005 and me! My pop works in a machine shop, gonna see if he can sort this for me! Quote Link to comment Share on other sites More sharing options...
Dr. Nick Riviera Posted November 24, 2005 Report Share Posted November 24, 2005 it only looks good , it doesnt work very well , just grind 'er up Quote Link to comment Share on other sites More sharing options...
the big B Posted November 24, 2005 Report Share Posted November 24, 2005 i guess you guys all think you "pwned" me, but that isnt a knurl. that is a grind. nice try though. Quote Link to comment Share on other sites More sharing options...
Jules Posted November 24, 2005 Report Share Posted November 24, 2005 That knurling thing looks cool, sorry i cant help you with finding what you need to do it though. Quote Link to comment Share on other sites More sharing options...
N.Wood Posted November 24, 2005 Report Share Posted November 24, 2005 (edited) :P-->QUOTE(the big B @ Nov 24 2005, 06:28 PM) ← i guess you guys all think you "pwned" me, but that isnt a knurl. that is a grind. nice try though. Hahaha! Have you read the f**king thread?! Read the OTN thread for more than one page. It's CNC machined, there's even a section on how to do it for douchebags like you. EDIT: 1) they must accurately clock and center the rim per side - to ensure it comes out even, 2) they need a HSS (High Speed Steel) cutter ground to a point 25-40 degree included angle on fly or single-bar cutter. 3) for a dx32, they should aim for 0.35mm depth of cut, + or - 0.05mm, under no circumstances should they exceed 2/5 of the thinnest part of the wall thickness. 4) cutter dia = 350mm 5) cutter PCD = 420mm 6) cutter V = 50-60 m/min @ 70mm/min (70mm/min is the feed rate, using 70mm/min @ 54.9m/min, the speed, will give you thesame groove spacing I have). Edited November 24, 2005 by N.Wood Quote Link to comment Share on other sites More sharing options...
the big B Posted November 24, 2005 Report Share Posted November 24, 2005 did i say it was ground by hand? Quote Link to comment Share on other sites More sharing options...
Siders77 Posted November 24, 2005 Report Share Posted November 24, 2005 :P-->QUOTE(the big B @ Nov 24 2005, 06:28 PM) ← i guess you guys all think you "pwned" me, but that isnt a knurl. that is a grind. nice try though. :P-->QUOTE(the big B @ Nov 24 2005, 07:32 PM) ← did i say it was ground by hand? Kinda' seems like it to me? :P Quote Link to comment Share on other sites More sharing options...
the big B Posted November 24, 2005 Report Share Posted November 24, 2005 ok usually youre not supposed to need the answer to a rhetorical question but obviously youre special. i did not say it was ground by hand. Quote Link to comment Share on other sites More sharing options...
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