Now I have seen the oil cooled discussion I think that looks like a good idea cheers (more sleepless nights thinking).
I would like to drill out a single hole between the spokes and then slightly dremmel a v shaped oil catchment channel inside. Then up to 3 or 4 twelve inch coils of 6mm copper pipe attached to the spokes. The centrifugal and rotational force should create positive pressure that spits it back in the cassette/gear side onto the coils. Perhaps via 6mm rubber tubing to avoid touching the cassette while trying to get down behind it to the center where its needed. I might find something ring like to try to distribute the oil onto several areas of the coils. But hope the pressure from the spirals spinning will push it out at a fast rate to cover everything. I might do a test with fishtank air hose filled with water and my bike upside down to see how far it squirts ooh er.
Have you ever used a water barrel walker pump at camping places. it looks like a grass flattener but has coils of hose inside that pumps the water out as you walk. Looks a bit like this
Then you would only need enough oil roughly to fill the copper pipes, maybe 30cc excess to avoid shortage at high rpm and not have a hub half filled with heavy messy oil. It might be less likely to leak out and actually move the heat from the hub entirely rather than trying to pass it to the body where the composite gears contact.
Imagine a coil like this was on a bike wheel and you walked to the left as you look at it. The weight of 5 feet of oil being flung outwards will oppose the 10 inches of return path back to the coils. Even at slow speeds the gravity should still continue to pump fluid but at a slower rate. With gravity and centrifugal force I would imagine some good usable pressure will arise. If I test this with water I will see how far it goes as a rough gauge externally on my conhis wheel.
Then a second vent to release pressure is fed into a very small catchment tank that can be aligned above the wheel over night so the few drops that went astray go back inside. So the tank would have two pipes, an air inlet (plus minor oil drips) and an air outlet only. If the air output release hose was fed into the center of the tiny tank, air could escape while retaining oil. Might have to make it, or modify an inline fuel filter but something of this shape and size
Once I have my motor and test it up my 400feet 18% hills I may not have to worry but I do like my stuff to last as long as possible. I would rather take it apart once every three years to replace oil (or just install the system) than every year to replace parts.
Keeping it balanced might be an issue but I only do 25mph max. I mostly bought the motor to kill hills at 15mph.
I think metal drive cogs and oil would be a great mix. Passing some heat away to the body, allowing for big amps and hopefully be quiet due to the oil so you cant hear people whinging about it,,,I mean hear the wizz noise lol
Has anyone decided if these oils degrade the coil lamination stuff yet?