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Re: (ET) Leaf vacuum attachment
Oh ok, that's static balancing, I was thinking more along the line of
dynamic (while it's spinning) balancing. The impeller is back on the
shaft, so I'll just fire it up next weekend and see what happens.
Meantime I did drag the E15 out of the weeds and will see about getting
it working again as well. What killed it most recently was that the
charger ran away and melted the 30 NiCDs because I tried using a
different capacitor and the timer fused. Bad idea :-)
On 8/11/2019 7:04 PM, weinreich frontiernet net wrote:
Just a couple of thoughts on balancing things like blades and turbines.
I haven't tried this on an EZ Rake turbine yet, however I would think
that a lawn mower balancer, (the small cone on the pivot base type)
would balance a turbine assembly just as well as it does a lawn mower
blade. Same rules apply: insure that there is not ANY debris and or
rust on the object to be balanced. (I would probably soda blast it to
get into the nooks and crannies). The one issue might be the location
of the keyway in the turbine hub. For this I would cut a length of key
stock and grind/file/machine one end so that it is the same depth as the
keyway, (as if there were no keyway in the hub while you are trying to
balance it). The really tricky part is likely to be whether to add or
remove weight from a particular blade to obtain a level plane.
Detecting the need to remove weight would consist of spot drilling holes
of the appropriate size on the outside edge of an impeller blade in
order to remove a bit weight while not drilling completely through it.
Conversely to add weight you might put a spot or two of weld on a
blade. This may be better than the removal technique in that if it is
too much you can always grind some off. And then you may find that the
thing is very well balanced just as it is!
Chris Weinreich