Finally I got it done. A guy from the neighborhood knew a turner and he coupled the thing nicely. As usual I forgot to take a picture, but the thread is alive and there is progress.
Right now I'm looking for a metal plate to bolt the motor housing together with the gerabox housing.
Once that is done, only the task to find appropriate chain / sprocets and to fix 'em on the bike.
I've got some plywood and two metal plates to build a mounting plate for the gearbox and motor. In case my knowledge of the word is not correct: I mean under plywood that kind which is glued together of wooden sheets with their directions being perpendicular. I'll have 20mm of that. As far as I know that is the strongest wood-pane you can get.)
this 20mm of wood is between 2 steel plates being 2mm each.
I drilled the mounting holes and managed to align the motor with the gearbox... well... more or less at least... seems I'm not that precise with a standing drill as I'd like to be.
either way it's waiting to be put together for a test.
after that I'll glue the pieces of this sandwich together, and paint it.
I have no idea how strong it will be, but probably it will be able to hold it together well enough.
Well, If done correctly this type of construction can be very strong. I image the plate being used to hold the motor and resist the torque it is producing.
Just make sure you use a "glue" that is approved for the materials you are bonding. Usually this means using an epoxy.
That is stronger than the floor pans we build for rail cars! Epoxy would work and let it cure under pressure; park the car on it over night. Seal the edges with epoxy too.
Not to worry. A piece of wax paper will keep the goo off your tire and the pavement. Remember More's Law: If enough is good too much must be better. Actually a thin coat works fine. Most shops use a 1 ton hydraulic press to lay up sheets of laminate spaced with fiberboard.
Not to worry. A piece of wax paper will keep the goo off your tire and the pavement. Remember More's Law: If enough is good too much must be better. Actually a thin coat works fine. Most shops use a 1 ton hydraulic press to lay up sheets of laminate spaced with fiberboard.
So I guess my car does not qalify. It's 750kg altogether...
You can see the grinder gearbox coupled with the electric motor with the used of that metal-plywood sandwich. Also you can see the way we solved the connection of the grinder's cog and the motor shaft.
Ok, ok, the sandwich is not the best engineering product I've ever seen, but I guess it will do...
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