few things i need to run through really.
im prefer oil over air cooling as with my pc i went from fans to water cooling and id never go back again. super cool and quiet.
i get air cooling is as easy as drilling holes. but as per another thread my hubs limit will be around the 2kw mark with air cooling. so oil is where im at for a 2kw plus increase.
please note i wont be pushing near 2kw on it... yet![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
either way i have some questions about oil.
what oil should i use?
how full should the hub be?
i figure i will have to make some gaskets/silcone seals to keep the oil in. will it still seep through bearing etc?
will the oil unbalance my hub sloshing about?
i get that the hub faces inside and out are the main heat transfer limitations(oil to metal to air). will grooving the inside and out faces so i increase their surface areas make any noticable difference to heat transfer?
i know that when metals gets hot their electrical resistance increases. how will keeping a motor cooler effect efficency or performance? i.e will a cooler motor use less amps/volts? if so will this change torque or top speed?
finally what kind of temp drops have people seen on their bikes with oil cooling
thanks in advance for the help
jim
im prefer oil over air cooling as with my pc i went from fans to water cooling and id never go back again. super cool and quiet.
i get air cooling is as easy as drilling holes. but as per another thread my hubs limit will be around the 2kw mark with air cooling. so oil is where im at for a 2kw plus increase.
please note i wont be pushing near 2kw on it... yet
either way i have some questions about oil.
what oil should i use?
how full should the hub be?
i figure i will have to make some gaskets/silcone seals to keep the oil in. will it still seep through bearing etc?
will the oil unbalance my hub sloshing about?
i get that the hub faces inside and out are the main heat transfer limitations(oil to metal to air). will grooving the inside and out faces so i increase their surface areas make any noticable difference to heat transfer?
i know that when metals gets hot their electrical resistance increases. how will keeping a motor cooler effect efficency or performance? i.e will a cooler motor use less amps/volts? if so will this change torque or top speed?
finally what kind of temp drops have people seen on their bikes with oil cooling
thanks in advance for the help
jim