_Daemon_ Posted March 25, 2009 Posted March 25, 2009 I have a old XT crankset that's quite scratched and scuffed, thinking of using it for a new "project bike" of mine. Thug came up with the brilliant idea of perhaps powdercoating it, anyone here ever tried it on their cranks?
AndreZA Posted March 25, 2009 Posted March 25, 2009 I spray painted a pair of 300EX ones a few years back. So I don't thing powder coating it would be a problem. Excepts if you bring the whole heat issue in. I doubt it gets so hot that it will actually damage the alu. .
Roders Posted March 25, 2009 Posted March 25, 2009 There's a company in brackpan, Controlled surface 0119141356, that does anodizing & hard face anodizing, This works well, lots of colour choices too!
Martin_v_Z Posted March 25, 2009 Posted March 25, 2009 I would suggest the anodizing route first..... much more durable than Powder-coat..... I also suspect that Powder-coat will not stick to alloy - could be very wrong though.
Dirtbreath Posted March 25, 2009 Posted March 25, 2009 Polish them. There was a thread a few days back about polishing. Some cool links to vintage BMX.
_Daemon_ Posted March 25, 2009 Author Posted March 25, 2009 Polish them. There was a thread a few days back about polishing. Some cool links to vintage BMX. That was my original idea...any idea what the topic was, so that I can search for it?
_Daemon_ Posted March 25, 2009 Author Posted March 25, 2009 There's a company in brackpan' date=' Controlled surface 0119141356, that does anodizing & hard face anodizing, This works well, lots of colour choices too![/quote'] Cool thanks will give them a call
amateur Posted March 25, 2009 Posted March 25, 2009 ask zaskar, he is currently busy with a similar project. He has done most of the research etc already.
Jules Posted March 25, 2009 Posted March 25, 2009 There's a company in brackpan' date=' Controlled surface 0119141356, that does anodizing & hard face anodizing, This works well, lots of colour choices too![/quote']Cool thanks will give them a call JB has had some very disparaging things to say about anodizing. He says it increases the risk of failure. I don't have a view either way, just thought I'd share that.
jaykay Posted March 25, 2009 Posted March 25, 2009 Try this guy, he does high speed polishing and also anodising if you want... He did my frame for me in a matt black and it came out sweet...Supreme Bumpers - Glen Brits: 0116262304. They're in Herriotdale.
AndreZA Posted March 25, 2009 Posted March 25, 2009 You must make it look like these from On-One. http://www.on-one-shop.co.uk/wp-content/uploads/2009/03/img_1105.jpg
Brighter-Lights Posted March 25, 2009 Posted March 25, 2009 I would suggest the anodizing route first..... much more durable than Powder-coat..... I also suspect that Powder-coat will not stick to alloy - could be very wrong though. Type II (normal + coloured) ano scratches much easier than SOME powdercoats... colored ano is quite soft - hear the crunching sound (like salt crystals breaking) when scratching it... it scratches even easier with a matt finish... I've had 2 frames powdercoated and the finish, silver vein, (see pics) is exceptionally hard and requires real effort to scratch with a knife... and almost impossible to damage with car keys... HA III is the best choice but can't be coloured... Hard Ano normally is green-grey to dark grey. Silver Vein finish powdercoating cost me R135 per frame incl. the sandblasting. It added 90 to 120g per frame... (so not much heavier than the 80g of paint that was removed. Close up of similar silver vein powdercoat finish : http://www.wildwesthardware.com/hinges/Door_pulls_9_sivler_vein+pair.jpg http://www.sharpcustomcoatings.com/images/img00005-20081222-2017.jpg http://www.kartraiser.com/KRSVa.jpg Coated Raleigh RM7... coating is darker after 3 years but still fine!
Roders Posted March 25, 2009 Posted March 25, 2009 There's a company in brackpan' date=' Controlled surface 0119141356, that does anodizing & hard face anodizing, This works well, lots of colour choices too![/quote']Cool thanks will give them a call JB has had some very disparaging things to say about anodizing. He says it increases the risk of failure. I don't have a view either way, just thought I'd share that. I anodized my XT cranks jonks ago & used the hardface on shock parts for the wear properties. To date no failures. I use the hard face on higly stressed machine parts with great success... Who Knows.... works for me!!
Thug Posted March 25, 2009 Posted March 25, 2009 BL, how did the frame turnout after blasting ? Was it a smooth finish that could be polished or did it have a stippled effect ? edit: Mamparra, those look sweet !!! The Thug2009-03-25 06:36:43
Brighter-Lights Posted March 25, 2009 Posted March 25, 2009 On cranks I'll go with Ano but powdercoating will work too... the best finishes I've seen are some guy selling ceramic coated XTR cranks on ebay. Just... most shops can't do hard anodizing... very easy to do type II ano but it's just as hard as the ano already on the crank and will scuff too...
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