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Use compressed air to blow off schmutz from frame/gears/chain after ride?

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Use compressed air to blow off schmutz from frame/gears/chain after ride?

Old 01-03-12, 07:27 PM
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Mondoman
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Use compressed air to blow off schmutz from frame/gears/chain after ride?

We've still got some piles of leaf pieces and other debris on the ground where I ride, and with the rain it all seems to get turned into a slurry that ends up on the bottom of my downtube/BB/chainstay areas, as well as on my crankset, derailleurs and even chain. It seems like a waste of good rags to try to wipe it all off -- any drawbacks to using compressed air to try to blow off the bulk of it before using a rag? I'll certainly avoid blowing toward/into the cassette and BB axles where the bearings are, but what about the chain? Could compressed air blow grit into the bearing surfaces, increasing wear?
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Old 01-03-12, 07:31 PM
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it will make a mess in the shop do it outside. we used to to use the hose on our road + MTBs bikes after dirty rides
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Old 01-03-12, 07:49 PM
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The biggie is to avoid any and all bearing and seal areas. But if you're doing that already and being careful I don't see that it should matter.

The chain is a good one though. I'd say that if the next ride with it sounds more gritty than the previous one then you're causing the grit to be blown into the inside surfaces faster than it would migrate on it's own. Or you may be blowing away enough of the water and existing oil you're using to actually make it cleaner than it was at first. Bit of a crap shoot on that one. I'd let the amount of gritty noise it makes be your guide.
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Old 01-03-12, 10:10 PM
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i'm thinking that, try as you might, you'll blow grit into places you don't want it.
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Old 01-04-12, 09:55 AM
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Just like washing with water. It's a matter of technique and a judgement call as to whether you're doing more harm than good. Removing dirt and grit is good, but forcing it into pivots and bearings isn't. Misguided attempts at cleaning favor the latter.
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Old 01-04-12, 10:29 AM
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You might blow grit into the chain, but at least you will blow some out as well. Lubricating a dirty chain would be worse.
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