BrandonCarriveau
Plastic
- Joined
- Mar 16, 2017
- Location
- New Orleans LA
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I need to balance 2 hand wheels for a remote camera system. The hand wheels have to be perfectly balanced in order to function correctly. Does anybody have any suggestions on what is the best way to go about this?
Perfectly? Why?
Firstly, Not trying to be difficult here, but the force inputs from the operator's hands are necessarily unbalanced and by quite a bit as the wheels are operated. So, just pretty close should be good enough for the dynamic part of their operation. Then again, a significant imbalance of the wheels could cause the hand wheels to seek a crankarm-down position if the wheels are attached to a very low friction axle. Ideally the axle would have some natural damping imparted usually by thixotropic grease applied to gears and or bearings. If possible, application of such a grease might be as important as balancing if such grease is not already in place.
The second big question is what equipment do you have at your disposal to make modifications to the wehels and to measure their imbalance?
So, as is quite common here, it would help if you could provide information to flesh out the problem so that better advice can be provided.
Denis
Actually using rails should be less friction than the best of bearings.
I think a combination of removing weight from the handle side and adding weight to the opposite side would be the easiest method.
The handle isn't going to rotate very fast, especially compared to a grinding wheel. My guess as to why the handles need to be balanced is they spin very freely and will move on their own if out of balance. So I would think the balance doesn't need to be very accurate. Just ballpark should work.
The added mass should be very dense, like lead, silver or, carbide., so it is small enough to not interfere with the existing handle.
Bill D
The chemical elements of the periodic table sorted by density
You might attach weight directly opposite the handle until you find the desired balancing weight. Then add a weight to the back side of the handle.
Some modern glues might be used to attach the weight....
Agree the double handle likely would be OK/best because of using the same part and process..
Looking at the photos of the balanced handwheels gives me another idea.
Could you modify the design so the strap connecting the hub to the rim is thicker opposite the handle?
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