natony Posted March 15, 2012 Share Posted March 15, 2012 I have a set of rays 57f pro's which are looking a bit worse for wear. My plan is to paint them with a gloss black lip and a satin centre but what i also want to do is replace the allen bolts that holds the 2 halves together with red anodised ones. The thing is that i can only find aluminium bolts, would these be strong enough ? if not does anyone know of anywhere that sells anodised steel allen bolts ? Quote Link to comment Share on other sites More sharing options...
suprasize Posted March 15, 2012 Share Posted March 15, 2012 speak to ibrah dude, speedwells link is on the taders section, very good company, and im sure they can cater for what your after Quote Link to comment Share on other sites More sharing options...
Josh Posted March 15, 2012 Share Posted March 15, 2012 Check the thread started by Ripped_Fear yesterday as there were links to places that sell the nuts and bolts. Quote Link to comment Share on other sites More sharing options...
Ibrar Jabbar Posted March 15, 2012 Share Posted March 15, 2012 Aluminium bolts won't have the tensile strenght and should not be used. Your best of painting them red as steel can not be anodised. Quote Link to comment Share on other sites More sharing options...
Noz Posted March 15, 2012 Share Posted March 15, 2012 How difficult would it be to paint the inside of the wheels red, and polish the lip, all being 1 piece? That would look sweet. Quote Link to comment Share on other sites More sharing options...
Colin-mkiv Posted March 15, 2012 Share Posted March 15, 2012 If they're actual splitrims, then you're best splitting them down and getting the separate components chemically stripped dressed and re-powdercoated. Dressing will only be req on outer lips to remove damage etc. Ibrar is right about the bolts, you can get gold bolts and chrome bolts, unless you want to paint your originals. You can soak them in coca cola overnight and they usually come up immaculate after a quick scrub. Painting them is sometimes a bit of a pain though as the paint generally chips off when you refit them to the wheels and tighten them up. Polishing is easy after they have been chemically stripped as the bare metal will be exposed, then you just get the centres coated and the outer lips clearcoated to protect the polishe surface. Some companies also offer diamond cutting of the outer lips, expensive but gives a slightly different look to your rims.....food for thought there....I hope I have helped... Quote Link to comment Share on other sites More sharing options...
Dnk Posted March 15, 2012 Share Posted March 15, 2012 Splash out and get some titanium bolts Quote Link to comment Share on other sites More sharing options...
bigbloodyturbo Posted March 16, 2012 Share Posted March 16, 2012 Splash out and get some titanium bolts Titanium bolts are weaker than steel though? Quote Link to comment Share on other sites More sharing options...
Noz Posted March 16, 2012 Share Posted March 16, 2012 (edited) Depends on appliaction. High tensile bolts aren't always required. Depends on the load on that bolt. The ISO standards give various tensile strengths ratings. If the bolt is 8.7 (IIRC) or above then you won't be able to use high strength titanium bolts as they won't be anywhere near as strong. Titanium is lightweight, and isn't overly difficult to machine. I can't see the benifit of using lighter bolts though, maybe cool pub talk, when the cost will out-weigh the benifits. Out-weigh lol sorry. Refer reading: http://faqload.com/faqs/bicycle-components/bolt-tuning-replacing-heavy-steel-bolts-with-titanium-aluminum-and-carbon-fiber Edited March 16, 2012 by Noz (see edit history) Quote Link to comment Share on other sites More sharing options...
garethr Posted March 16, 2012 Share Posted March 16, 2012 Are the rim bolts normally high-tensile? I noticed this on the CCW site: Race version wheels are machined to accept grade 8 cadmium hardware as it's less expensive and does the job fine. Street version wheels are machined to accept ARP stainless steel hardware as it will provide a better finish over time. It's not difficult to find standard (A2-80 or A4-80) stainless cap screws and nuts that could be used to replace the split rim bolts. A4-100 seems to be more difficult, especially bolts with a plain shank. They would all be a lot cheaper than "split rim bolts". Quote Link to comment Share on other sites More sharing options...
Dnk Posted March 16, 2012 Share Posted March 16, 2012 (edited) Titanium bolts are weaker than steel though? Thats a rather sweeping statement seeing how many differant grades of steel there are. I think BBS use grade 5 Titanium bolts along with quite a few places that sell them specifically for splitrims so as long as you buy the correct grade of bolt be it titanium or steel you'll be fine. And ofcourse using the correct amount of torque Titanium has lots of benefits over steel, its non magnetic, doesnt corrode, is very light so reduces the rotating mass of the wheel, etc. Its really good for marine applications Edited March 16, 2012 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Dnk Posted March 16, 2012 Share Posted March 16, 2012 Are the rim bolts normally high-tensile? I noticed this on the CCW site: Race version wheels are machined to accept grade 8 cadmium hardware as it's less expensive and does the job fine. Street version wheels are machined to accept ARP stainless steel hardware as it will provide a better finish over time. It's not difficult to find standard (A2-80 or A4-80) stainless cap screws and nuts that could be used to replace the split rim bolts. A4-100 seems to be more difficult, especially bolts with a plain shank. They would all be a lot cheaper than "split rim bolts". Take a look on the Pertsch & Partner website, thats where i got my new splitrim fastners from, the st/st A4-100 are strength grade 10.9, the same as their titanium fastners. They pretty much cover whatever you need splitrim wise Quote Link to comment Share on other sites More sharing options...
Noz Posted March 16, 2012 Share Posted March 16, 2012 Its really good for marine applications Does that mean James Bond has these bolts on is car that went under water? Quote Link to comment Share on other sites More sharing options...
Dnk Posted March 16, 2012 Share Posted March 16, 2012 Does that mean James Bond has these bolts on is car that went under water? It was an old Lotus so i doubt it Quote Link to comment Share on other sites More sharing options...
bigbloodyturbo Posted March 16, 2012 Share Posted March 16, 2012 Thats a rather sweeping statement seeing how many differant grades of steel there are. not really a sweeping statement mate. Titanium bolts have a lower tensile strength that alloy steel, i'm sure there are experts in the field of metallurgy that could come up with examples of titanium being stronger than a plain jane carbon steel bolt but in the context of the discussion I believe it is a fair point that the op would be better using a stronger alloy steel fastener rather than a titanium effort at 5times the price simply because its made of titanium and BBS use them on i'm guessing very expensive wheel packages. Only advantages I can see is corrosion resistance and that is only with regards general road cr@p corrosion, if they were to be attached to something with aluminium in it (like some alloy wheels) I would gues galvanic corrosion would be of greater concern and considering they are already weaker than steel I would imagine this wouldn't help their longevity. If my memory serves I seem to remember they also suffer from hydrogen embrittlement during the coating process, which I guess you would need to opt for if using them with an aluminium alloy, its been years since I did my degree so I dont hold me to it. Quote Link to comment Share on other sites More sharing options...
Dnk Posted March 17, 2012 Share Posted March 17, 2012 Yes i agree there will be lots of steel alloys with higher tensile strength but is that required for the application its being used in ? Yes Titanium has good and bad properties just like steel Quote Link to comment Share on other sites More sharing options...
bigbloodyturbo Posted March 17, 2012 Share Posted March 17, 2012 Yes i agree there will be lots of steel alloys with higher tensile strength but is that required for the application its being used in ? Yes Titanium has good and bad properties just like steel If it were me personally I would not consider titanium for this application, whether the load is tension or shear I believe steel would be more suited to both. I agree where the bolts would be situated at the circumference of the wheel would benefit from the weight reduction but not really in a road car (not that i'm an expert on such things). For me I'd also like to be over catering for the load rather than removing the manufacturers spec fasteners and replacing with weaker items to save weight and prevent corrosion which could be achieved with zinc coating or cadmium if you have the pockets for it. Quote Link to comment Share on other sites More sharing options...
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