electr0n wrote:Is your motor still cutting out?
electr0n wrote:Are you running a 24" front tire with a 17" rear, maybe closer to 21" with the tire?
electr0n wrote:Seems like a better solution than drilling holes in the side covers to me.
GCinDC wrote:amazing how much confusion this wheel causes, huh?
26" bicycle front (27" actual Outside Diameter), 2.75 x 19" Motorcycle Tire (25" OD)
GCinDC wrote: it should be noted that this hulk of a wheel takes tremendous energy to rotate.
Hyena wrote:Any reason the vent hose is so long ?
GCinDC wrote:this wheel is a monster and sucks current to move.
- hs3540 in bike wheel reaches 125C at mile 4.5, after the hill
- unoiled hs3540 in MC wheel reaches 125C at mile 3.3 (one third up the hill, so i have to back way off the throttle make it to the top w/o cooking)
- oiled hs3540 in MC wheel reaches 80C at mile 3.3 and as long as i'm moving doesn't rise above 90C.
guess how i feel now that every bump squirts oil onto the rotor?
i lost all rear braking power sometime during the morning's commute.
is there a way to seal the wire side? i don't know. as far as i can tell now, i need:
- sealed bearings, not shielded ones, but first need to find out if there're compatible w/ the sidecover/motor. look at the sealed rubber capped bearing on the cromotor:
- somehow seal/caulk the wire slot -- this i can't figure out how to do. either i'll have to leave the bearing on the axle and caulk around the inside of the wire. or i'll have to push the sidecover down over wet caulk, and perhaps squeeze more down from the outside? messy, messy.
lazarus2405 wrote:Do you have any numbers for side cover temperatures with and without oil cooling? Perhaps with an infrared thermometer, or holding a probe to it at the top of your big hill. If we know exactly how much hotter the side covers are, we could calculate how much extra oil cooling gives you. Without having any to make any assumptions about the heat path inside the hub, knowing the dimensions of the hub, your speed, the ambient air temperature should let us fairly easily calculate how much heat the hub can dissipate via forced convection. Remember if you double the delta-T (say the side cover temperature goes from 40°C to 55°C, 25° ambient), you double your rate of heat dissipation and thus double your max continuous power. I'd be really interested in some hard numbers.
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