shirepig Posted July 19, 2014 Report Share Posted July 19, 2014 Anyone have an amazing tip for removing heavily corroded, mostly part disintegrated aluminium spoke nipples from stainless spoke? please... Quote Link to comment Share on other sites More sharing options...
windwelder Posted July 19, 2014 Report Share Posted July 19, 2014 Hi, You could try soaking them in coke, it destroys aluminium! But will also dissolve the rim. Hope that helps. Quote Link to comment Share on other sites More sharing options...
bondy Posted July 19, 2014 Report Share Posted July 19, 2014 buy new ones Quote Link to comment Share on other sites More sharing options...
pschrauber Posted July 20, 2014 Report Share Posted July 20, 2014 Citrus acid works very well for getting off any rust or corrosion but you need a big containment to fill so the wheel will fit. I have used it for cleaning up the radiators as there had too some corrosion inside. It worked very well, best and fastest result you get when heating up the water acid mix up to 70deg. Celsius. Also the parts should be de- greased before use oil as grease will protect the corrosive against the acid. Quote Link to comment Share on other sites More sharing options...
woody Posted July 20, 2014 Report Share Posted July 20, 2014 Assuming they are the original spokes / nipples, as far as I know the original nipples are no longer available. So even if you managed to remove the old nipples, the spokes can't be re-used as new nipples are manufactured with a different thread, so won't fit. You need to check this first obviously, but if still the case you may as well just cut through the spokes as a complete set of spokes / nipples will be required Quote Link to comment Share on other sites More sharing options...
shirepig Posted July 20, 2014 Author Report Share Posted July 20, 2014 I've already got new nipples from Hugh's Bultaco who said they'd fit just fine. I hope the threads are the same.... The spokes are good so it'd be a shame to snip them. Will try citric acid. Thanks pschrauber. Quote Link to comment Share on other sites More sharing options...
pschrauber Posted July 20, 2014 Report Share Posted July 20, 2014 Thanks, here a how to do; http://www.instructables.com/id/Removing-Rust-with-Citric-Acid/ Quote Link to comment Share on other sites More sharing options...
trailie Posted July 20, 2014 Report Share Posted July 20, 2014 (edited) I've got some really old ones to move with a good soak in plus gas then plenty of heat on the nipple with a blow lamp. The Bultaco spokes had a 3.5mm thread according to the book. If you get new nipples they might well have a 6-40 UNF thread. However the two threads are so close to the same pitch that it's possible to just run a 6-40 UNF die down the spoke and clean it up enough so the nipple will screw on nicely. Use a good cutting paste if they're stainless spokes. Edited July 20, 2014 by trailie Quote Link to comment Share on other sites More sharing options...
lorenzo Posted July 21, 2014 Report Share Posted July 21, 2014 Shirepig - My own experience has been similar to trailie's :" I've got some really old ones to move with a good soak in plus gas then plenty of heat on the nipple with a blow lamp." However, as you haven't posted your location, I cannot be sure that "Plus Gas" (penetrating/dismantling fluid) would be available in your area. I'm also unsure about the availabilty of replacement original nipples as I've not bought any for some time. Good luck with yours - HTH. Quote Link to comment Share on other sites More sharing options...
lineaway Posted July 21, 2014 Report Share Posted July 21, 2014 Vinegar will easily remove rust. Apple cider is best. Soak it for several days. 1 Quote Link to comment Share on other sites More sharing options...
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