Dork disc source for 46t cassette?
01-30-20, 05:46 PM
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Dork disc source for 46t cassette?
Call me a dork, but I like the protection of a dork disc when self supported bicycle camping in the middle of nowhere. I'd rather not have to use my hypercracker to remove the cassette in the dark in a rainstorm in the cold to change spokes chewed up from the rare chance that the limit screw is out of adjustment and the chain jams behind the cassette. But where to find a dork disc for my planned 1x46 setup? I can't seem to find a source for a 46t size dork disc. What about a ghetto hack like zip ties on the spokes just behind the cassette, carefully trimmed? Just something to prevent a jam. Looks and image don't matter to me. I tour alone and have no shame. Source for a big disc or diy hack?
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01-30-20, 08:35 PM
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We used to call them- pie pans. you might look for one of those. Smiles, MH
01-30-20, 08:44 PM
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I would get a spoke protector for a 32-spoke wheel, which should have 4 prongs (36 have 3), then cut off two, use the remaining ones to center it and drill or melt holes to wire or zip tie it securely in place. https://www.amazon.com/Shimano-Freeh.../dp/B001D2VBQ6 I'd still have the Hypercracker and extra spokes handy.
01-31-20, 01:32 AM
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Buy a pie tin and trim off the outside down to what you need with a tin snips.
01-31-20, 08:36 AM
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Cassette diameter 8.26 inches. Would 7.25 disc at least prevent chain jamming?
The biggest disc I can find is 7.25 inches diameter and my cassette diameter is 8.26 inches (gigantic 46 tooth for a 1x setup). I don't need the disc to be a larger diameter than the cassette, since I'm not worried about the derailleur jamming into the spokes. I just want to protect against a derailleur misadjustment throwing the chain off the cassette and jamming between the cassette and spokes. Seems like an undersized dork disc would at least prevent the chain from jamming the whole way down behind the cassette where the spokes angle out at the hub. Is my thought that a too small diameter dork disc would at least prevent that type of jam and spoke damage?
01-31-20, 08:40 AM
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Yeah, you really only need a disc large enough to stop the chain from falling into a gap narrower than the chain. From a quick glance, the disc would only need to be maybe 4" across.
As a guy who has dropped his chain behind the cassette once or twice (my own fault) now I feel like I might need to fabricate something.
As a guy who has dropped his chain behind the cassette once or twice (my own fault) now I feel like I might need to fabricate something.
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01-31-20, 07:18 PM
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02-01-20, 05:32 PM
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02-02-20, 08:25 PM
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I have an old Schwinn Collegiate with a big ol 9" chrome one! It is for a freewheel, but maybe you could figure out some good hack to make it work. I think the Varsity used them too. There has to be some on ebay, they made millions of them.
Last edited by Vefer; 02-02-20 at 08:34 PM.
02-06-20, 12:11 AM
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Some bike shops save them, you can ask a few to see if they have any on hand. I grabbed a big stash when a local shop closed, they were going to toss them. I think the largest I have fits a 40T though.
02-06-20, 07:55 AM
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This. 1/2 a stop away from the low. So what's the next cog below your 46t?
(And same on the high side, there are no dork disks on that side, so you probably will be losing the 11 or 12. Yes, you've "burned" two cogs, but, in the "middle of nowhere" this might be sane.)
Ideally, you'll want the 1/2 stop noise to tell you not to do that. Assuming that since you are in the "middle of nowhere" you have brought inner shift cable too.
-mr. bill
(And same on the high side, there are no dork disks on that side, so you probably will be losing the 11 or 12. Yes, you've "burned" two cogs, but, in the "middle of nowhere" this might be sane.)
Ideally, you'll want the 1/2 stop noise to tell you not to do that. Assuming that since you are in the "middle of nowhere" you have brought inner shift cable too.
-mr. bill
