Parasitic bike pump**********?
01-07-11, 09:46 PM
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Parasitic bike pump**********?
My son just found a site that presents a novel idea... Now if I can just find that tire that had 90PSI in it...
https://blog.makezine.com/Automatic-bicycle-pump.jpg
https://blog.makezine.com/Automatic-bicycle-pump.jpg
01-07-11, 09:49 PM
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I used one of these when I worked for a lawn crew in high school. It worked great filling mower tires from a big truck tire. I don't know how well it would work with a bike!
01-07-11, 10:31 PM
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If you can run your bike tires at 32-35 psi you're golden. Maybe if you run an old mtn bike a little soft in the tires this would get you home.
01-08-11, 12:19 AM
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You could get a higher pressure by using pistons of different sizes, a big piston on the intake side pushing a smaller piston on the output side.
01-08-11, 01:10 AM
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Reminds me of a whimsical idea I have to create a pump that is driven off the wheel somehow. Instead of futzing with a pump (or yes, CO2), just lift the rear wheel and turn the cranks by hand, or just get on and ride after a certain point.
Best I can come up with off the top of my head is a oval track that when moved relative to a anchored piston converts the rotation into the required reciprocating motion. Anchor the piston to the wheel to inflate the rear off a frame mounted track, or vice versa to inflate the front or another bike.
If that wasn't gizmo enough, imagine running some valves off this system up to the handle bars to inflate/deflate the tires on the fly. Bicycle equivalent of CTIS. Have you Pugsley go from a mud hog to a mean road machine without dismounting
.
On the impractical side, yeah, but it would be so cool.
Best I can come up with off the top of my head is a oval track that when moved relative to a anchored piston converts the rotation into the required reciprocating motion. Anchor the piston to the wheel to inflate the rear off a frame mounted track, or vice versa to inflate the front or another bike.
If that wasn't gizmo enough, imagine running some valves off this system up to the handle bars to inflate/deflate the tires on the fly. Bicycle equivalent of CTIS. Have you Pugsley go from a mud hog to a mean road machine without dismounting
.On the impractical side, yeah, but it would be so cool.
