Hardtailrider Posted February 11, 2011 Posted February 11, 2011 Hi All Thought I'd share a little "yay" moment to this forum. Discovered a while back that, after removing a SRAM PG970 cassette using the chainwhip and lockring tools, all but the two smallest cogs of the cassette are held together by a tiny (1.5mm) allen bolt that you can get at on the back of the largest cog. Unscrew and remove the allen bolt, and the cogs all come apart, separated by plastic (nylon?) spacers. You can then scrub them all beautifully clean away from the bike, with no fear of contaminating brake discs, getting crud in bearings etc. etc. Reassembly is easy - just be careful to:(i) Orient the spacers correctly so the hole in each spacer, through which the allen bolt has to pass, lines up correctly(ii) Put the cogs back the right way round i.e. the sides stamped with a little capital M must be on the hub side and the ramped sides of the teeth must be on the outside(iii) Make sure that the spline slots line up correctly - not all of them are the same size so it's easy to check(iv) Not overtighten the allen bolt - very easy to strip the thread and/or mangle the hex After that, it's the usual refitting of the cassette onto the freehub. Good luck!
29thumbs Posted February 12, 2011 Posted February 12, 2011 Wow, wot an amazing discoverydid you know that if you loosen the right hand side skewer nut you can pull the skewer all the way out...oh , i cant handle all this excitement.....wheres my prozak
29thumbs Posted February 12, 2011 Posted February 12, 2011 Oh, with out being nasty. please move to the closest city
Ashchest Posted February 12, 2011 Posted February 12, 2011 Wow, wot an amazing discoverydid you know that if you loosen the right hand side skewer nut you can pull the skewer all the way out...oh , i cant handle all this excitement.....wheres my prozak Did you know that if you use imodium you will feel much better?
RiderX Posted February 14, 2011 Posted February 14, 2011 Did you know that if you use imodium you will feel much better? Haha thats hillarious OK now i guess I need to say something usefull aswell. i'm much too lazy to remove the cogs everytime I want to clean them,so I bought a little brush set thats very easy to use. You should be able to get it from a car store like Midas or even from Shoprite's little car care section. Basically it looks like a toothbrush but the hairs are much longer and stronger. Its makes it possible to scrub between the cogs easily without removing anything. Interesting to read that Sram cassettes can be taken completely apart since im sure thats not the case with shimano cassettes, since the cogs are stamped onto the spindle with pins.
Hardtailrider Posted February 14, 2011 Author Posted February 14, 2011 Haha thats hillarious OK now i guess I need to say something usefull aswell. i'm much too lazy to remove the cogs everytime I want to clean them,so I bought a little brush set thats very easy to use. You should be able to get it from a car store like Midas or even from Shoprite's little car care section. Basically it looks like a toothbrush but the hairs are much longer and stronger. Its makes it possible to scrub between the cogs easily without removing anything. Interesting to read that Sram cassettes can be taken completely apart since im sure thats not the case with shimano cassettes, since the cogs are stamped onto the spindle with pins. Aaah - take pity on RedSox. The poor soul's clearly pimply, about 13 years old, and needs a dear mum to get from an inner-city safety blanket to anywhere a cassette's actually likely to get dirty. Could do with some remedial work on spelling too... Not sure if any SRAM cassettes other than the PG970 can be dismantled completely. Generally go the brush route with cassette cleaning but found that you can do a much better job if you dismantle it.
tikki Posted February 14, 2011 Posted February 14, 2011 blast it with a high pressure cleaner ( not while on the hub) , 30 seconds work
Grebel Posted February 14, 2011 Posted February 14, 2011 (edited) Degreaser with the bike leaning over towards the dérailleur. Leave it for a few minutes, brush with a ling bristle brush and rinse it with water. Use a small thin tool to get to the stubborn bits that didn't come off with the brushing. Remember to lube the dérailleur after wards as well... Edited February 14, 2011 by Grebel
Guest Big H Posted February 14, 2011 Posted February 14, 2011 (edited) Bike bits or operating theaters..... Ya guys wear latex gloves and surgical masks as well...... Keeenky!!!!!!! ..... Does the nurse get to dress for the part as well????? Naughty naugthy Edited February 14, 2011 by Big H
Dicky DQ Posted February 14, 2011 Posted February 14, 2011 This only works for the cheap ones. the light, over the top priced ones are made from 1 piece of Blik or whatever. Many K ZARs and less km.
Yang Posted February 14, 2011 Posted February 14, 2011 C'mon guys. The Tech Q&A section is our serious section. You wanna get a medal for makimg fun of Hardtailrider, wait for him to post something on Rant & Rave or Chit Chat. Thanks for the "yay" moment HTR.
Dicky DQ Posted February 14, 2011 Posted February 14, 2011 And your point is? Why would you want to strip the blades? Esp items that are milled from a solid billet?
Azonic Posted February 14, 2011 Posted February 14, 2011 spritz some paraffin/petrol/turps on the cassette, then slide a lekker rag between the two biggest sprockets and "floss" back and forth. The cassette will engage allowing you to "Stay in one place", but get all the way around the cassette. Slide the cloth out, and move on to the next "gap" between the sprockets. This gets them decently clean and it takes a minute. Wheel has to be taken out to do this nicely, layed flat on the ground.
leeu52 Posted February 14, 2011 Posted February 14, 2011 Easier than anything mentioned so far: 1. Buy some Sh1tshifter from www.Chaireactioncycles.com2. Spray on3. Rinse off Voila...shinier than when you bought it! I know you don't believe me. See if I care. Go forth with your brushes, cloth, paraffin, diesel, engine cleaner, allen keys and spelling bees. I'm the oke with bike with the shiny drivetrain and clean nails haha!
Azonic Posted February 14, 2011 Posted February 14, 2011 Ok, while you wait for your Sh1tshifter to arrive from England, I'll use my R10 bottle of paraffin from my local hardware store Eddie Stafford 1
Guest Big H Posted February 15, 2011 Posted February 15, 2011 (edited) Ok, while you wait for your Sh1tshifter to arrive from England, I'll use my R10 bottle of paraffin from my local hardware store ......... As long as you use your R10.00 paraffin responsibly and not pollute nature ..... Even though minutely ..... With unwanted hydro carbons. Edited February 15, 2011 by Big H
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