A plea for help. Haaaalp!

Jun 07, 2014 08:05

So the chain/sprocket replacement is continuing to not go well, and I have a question for the greasemonkeys on the list who may have an answer to this ( Read more... )

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feyala June 7 2014, 19:13:32 UTC
I'm not a mechanic, but I have done this on my bike. First, you want to make sure they aren't upside down. If the hole for the tab goes down further, just flip 'em. Look at the surface on the sprocket side and see if there are any protrusions that won't be able to fit into the hub in the current configuration. If everything looks like it'll lock together like a puzzle, you're fine ( ... )

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patch_bunny June 7 2014, 19:58:09 UTC
Is there any particular grease I should use/avoid? I have a tube of white grease, but that's not what's in there now.

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feyala June 8 2014, 07:47:29 UTC
I use the high temperature bearing grease, the purple stuff in a can from autozone for $2 but the axle shouldn't be wearing too much on the inside, so it isn't really critical. You just want something in there to help it slide in and out and to keep it from getting all corroded in there.

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feyala June 8 2014, 07:50:39 UTC
Just make sure you don't use a lot of it, whatever you use. You want a light coating, smear some on a paper towel and use that.

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nrasser June 9 2014, 03:36:06 UTC
Those are made of grease-stable rubber. You can use assembly lube, white grease, wheel bearing grease or even Vaseline.

I'll second the mallet, that's how I get them in. You can deburr the lugs on the sprocket a bit with a file or grinding stone to make them easier to shove in without cutting up the rubber. As long as you just round the edges a little it won't affect the design at all.

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patch_bunny June 9 2014, 05:05:35 UTC
It's close to what I finally did. I trimmed off the flashing with an X-acto knife, which gave me a little more room. I applied some dish soap to the edges, and the whole thing slid together with firm hand pressure.

Once the replacement hoses arrive for the fuel system I'll get that done and take it out for a test ride. Thanks all for the help!

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nrasser June 9 2014, 20:55:12 UTC
Good to hear! Those drive cushions can be a PITA. Soap is generally the safe bet for rubber slip fits anywhere, just remember to hose it off the tires if you use it while changing. A shop I went to forgot that small important step and I biffed the first corner I took afterwards :P

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