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imho you might want to go with larger diameter guide rods or upgrade to block and track linear bearings. Wonderful project overall!!
I use these http://www.mcmaster.com/#standard-threaded-inserts/=14qfrpt
Hey no need to apologize for not making the most efficient motor! You did well. The instructable was clear and well written. Some one looking for a good science fair project or teaching model would benefit from this.Here are some suggestions:Use hot glue instead of foam,less messy. Use washers on the bottom of the field support rods to reduce the size difference between the rod and coupling to make it easier to keep the rods straight.Fix the rotor to a shaft.Set bearings into the rotor support to make the motor able to drive something. No criticizim here, just a way to drive home the point if this is built for demo purposes.Thank you.
A welder is not likely to work as they are very high CURRENT but low voltage, the exact opposite of what is being demonstrated here.
Would it suit your design objectives to use an external control scheme ? I'm thinking that if the "armature" mounted some Nd magnets and the commutator operated a polarity reversing relay feeding the coils and there were another set of coils on the opposite side.........Hmmmm.I noted that you took your welding ground thru the workbench when welding to the first wheel hub and then to the sprocket segments for the other welds . Did the workbench ground damage the bearings ?
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