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Fabricating dust covers?
I've had some cones work themselves loose on a Dynacraft rear wheel resulting in enough play to cause the dust cover under the freewheel to get mangled. I've had this happen once before on this wheel, and found I needed try 5 bike shops before I found a shop that had a match. Since this is a low end beater, I was wondering is it possible to just cut a disc from metal or plastic or cardboard of appropriate diameter to cover the bearings and perhaps just glue the cover in place or would that be prone to comming loose? Or could I just find a washer and drill out the axle hole and grind down the diameter to size? -- meb |
Fabricating dust covers?
eeeyyahahayayahyah best to red loctite ura cones following a thorough surface cleaning male/female with thinner, choh, and clean wire brush. then ura cones won't come loose unless worn into a round shape. takes a propane torch to remove. one 'trick' is lock all the right side with red lwft side cones red but left nuts blue. a poly water bottle, buy now supplies are limited, cut into a dust cap off sorts. one thing to watch for in DIY dust cap anything is the ability for trapping dust in that there tiny canyon not deflect dust. try an infant's feeder bottle nipple or that kinda shape. mimics a shimano dirt bike 135mm hub rubber. ask the LBS if there are hub rubbers under the bench. there's a lotta plastic stuff lying around eg I'm inflating an big hole air mattress with a small probe pilates ball pump using a section of liquid dishwasher top for the mating surface slipped over the pilates probe. |
Fabricating dust covers?
moooo? |
Fabricating dust covers?
meb wrote:
I've had some cones work themselves loose on a Dynacraft rear wheel resulting in enough play to cause the dust cover under the freewheel to get mangled. I've had this happen once before on this wheel, and found I needed try 5 bike shops before I found a shop that had a match. Since this is a low end beater, I was wondering is it possible to just cut a disc from metal or plastic or cardboard of appropriate diameter to cover the bearings and perhaps just glue the cover in place or would that be prone to comming loose? Or could I just find a washer and drill out the axle hole and grind down the diameter to size? Really good question, I've screwed around with this a lot on beater bikes, seems simple, but I've never come up with a good way. |
Fabricating dust covers?
On Mar 5, 12:20*pm, Peter Cole wrote:
meb wrote: I've had some cones work themselves loose on a Dynacraft rear wheel resulting in enough play to cause the dust cover under the freewheel to get mangled. *I've had this happen once before on this wheel, and found I needed try 5 bike shops before I found a shop that had a match. * Since this is a low end beater, I was wondering is it possible to just cut a disc from metal or plastic or cardboard of appropriate diameter to cover the bearings and perhaps just glue the cover in place or would that be prone to comming loose? *Or could I just find a washer and drill out the axle hole and grind down the diameter to size? Really good question, I've screwed around with this a lot on beater bikes, seems simple, but I've never come up with a good way. ofetn, room exists for a circular poly jug cutout with axle hole to fit inside or abutt the circular ID hub body. OR an O-ring. O-ring and a poly cutout is a double defense with the baby bottle nipple shape over the hub body but loose on axle side possible. gluing a shape together with vinyl and vinyl glue is possible. |
Fabricating dust covers?
meb wrote:
I've had some cones work themselves loose on a Dynacraft rear wheel resulting in enough play to cause the dust cover under the freewheel to get mangled. .... Since this is a low end beater, I was wondering is it possible to just cut a disc from metal or plastic or cardboard of appropriate diameter to cover the bearings and perhaps just glue the cover in place or would that be prone to comming loose? Or could I just find a washer and drill out the axle hole and grind down the diameter to size? If you want to fab your own on the cheap and simple, get nylon washers of appropriate ID. Sandwich them between two nuts on a snug-fitting bolt, and hand file or power sand them until their diameter is just small enough to jam them into the recesses with some pressure. If you can spin the bolt in a drill while filing, dremeling, etc., you'll give them a nice round and even circumference. You'll develop a bur on the edge of the nylon that you can scrape or peel away as necessary. You want to use nylon because it's springy enough to press fit without violence and/or the risk of damage to your hardware. The difference between too tight and too loose is only thousandths of an inch, so check the fit frequently and have enough washers to try again if you overshoot. Chalo |
Fabricating dust covers?
a nylon washer, an O-Ring, a shortened trojan, a cliff bar and a french vanilla shake togo. |
Fabricating dust covers?
On Wed, 5 Mar 2008 20:36:34 +1100, meb
may have said: I've had some cones work themselves loose on a Dynacraft rear wheel resulting in enough play to cause the dust cover under the freewheel to get mangled. I've had this happen once before on this wheel, and found I needed try 5 bike shops before I found a shop that had a match. Since this is a low end beater, I was wondering is it possible to just cut a disc from metal or plastic or cardboard of appropriate diameter to cover the bearings and perhaps just glue the cover in place or would that be prone to comming loose? Or could I just find a washer and drill out the axle hole and grind down the diameter to size? 19th century tech may be appropriate here; a thick oiled leather washer with a very light spring to hold it in place against the side of the hub makes a decent dust and grime guard with so little drag that it's not worth worrying about. It's not too good at holding the oil fraction of the grease in the hub, but it also affords an easy way to relube...by peeling the washer back and squirting a dab of grease in without removing the wheel. I found an ancient and much-abused bike on a junk pile not too long ago that was so equipped, and the bearings were nearly the only good parts on it. With a low-speed interface, you can get away with some very low-tech solutions. -- My email address is antispammed; pull WEEDS if replying via e-mail. Typoes are not a bug, they're a feature. Words processed in a facility that contains nuts. |
Fabricating dust covers?
Peter Cole wrote:
Really good question, I've screwed around with this a lot on beater bikes, seems simple, but I've never come up with a good way. Chalo, Wehatrack, good ideas. Thanks. |
Fabricating dust covers?
Chalo Wrote: meb wrote: I've had some cones work themselves loose on a Dynacraft rear wheel resulting in enough play to cause the dust cover under the freewheel to get mangled. .... Since this is a low end beater, I was wondering is it possible to just cut a disc from metal or plastic or cardboard of appropriate diameter to cover the bearings and perhaps just glue the cover in place or would that be prone to comming loose? Or could I just find a washer and drill out the axle hole and grind down the diameter to size? If you want to fab your own on the cheap and simple, get nylon washers of appropriate ID. Sandwich them between two nuts on a snug-fitting bolt, and hand file or power sand them until their diameter is just small enough to jam them into the recesses with some pressure. If you can spin the bolt in a drill while filing, dremeling, etc., you'll give them a nice round and even circumference. You'll develop a bur on the edge of the nylon that you can scrape or peel away as necessary. You want to use nylon because it's springy enough to press fit without violence and/or the risk of damage to your hardware. The difference between too tight and too loose is only thousandths of an inch, so check the fit frequently and have enough washers to try again if you overshoot. Chalo This is probably the approach I'll try since the flexibiliy of the nylon might preserve it in place under the freewheel. Thanks. -- meb |
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