em1942
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Re: Electric brake drums - how to correct out of balance
The drums and axles are no longer made so replacement is not an option. Talked to a guy that has balanced many drums by welding on weights. He said about 10% crack when welding so that is not an option since they're not replaceable. Finally went to a machine shop and had them turn the outside. Removed about .100 at the worst spot (still 1/2" thick) at a cost of $50. Fixed now and the drum only weighs 64 lbs instead of 65 lbs! FYI: One post asked about what kind of tire problem - always separation at about 1/2 amount of tread (this will be the 4th tire on this axle). Axles are parallel and square on trailer and I keep it up on stands when not in use. I found a piece of steel 6" x 2" x 1/4" thick (about 16 oz or 1 lb)and strapped it to the drum and it needed a little more to get close to balance. Here's some things I heard about increasing tire longevity (comments welcome) 1) From the guy I bought tire pressure monitors from - "Never run LESS than the PSI noted on the tire to keep the running temperature down - a little more OK" 2) If a 80 psi tire, store at 40 PSI when not in use (on stands). 3) Always keep tires covered when not in use to reduce expansion/contraction of plies (as well as ozone deterioration). Thanks guys for the input - I'm keeping my fingers crossed.436Views0likes0CommentsElectric brake drums - how to correct out of balance
Having trouble with tires on my tandem and noticed the drums are way out of balance as they rotate rather quickly with the heavy side down when the tire is removed. There isn't any area on the drum to drill for balancing. The center hub is steel and about 6" dia x 1/2" thick that the drum is pressed onto. I could turn a steel balancing weight in a lathe and then cut/weld to the center hub but it would take a lot of weight since it would only be 3" off center. There should be an easier way to do this. Any suggestions?4.5KViews0likes19Comments
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