Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Posted: Oct 29 2018 9:43am
Electric Vehicle and Technology Forums
Chalo wrote: ↑Oct 28 2018 7:32pmWho did you find to insure it? Was it hard to get a title for it?2WheelsMovesTheSoul wrote: ↑Oct 24 2018 5:27pmLOL, my EEB is already 148lbs with a 20s14p pack, 18" moto wheels, tubes and tires. Probably end up closer to 165lbs once I get my 22s19p pack.
If you ain't jumping this bish, get the QS motor, I've pushed over 10k thru mine and with the FF+hubsinks and it hits 60mph with ease.
I see where your heading Chalo. Nobody insures it and there is no title. Not interested in either.
I didn't build this so I could ask rich bureaucrats for permission to ride it.
neptronix wrote: ↑Oct 19 2018 12:04pm10lbs more is alot when the bike is already 70lbs.
This is why i'm a fan of the leafmotor 1.5kw on about 4kw of peak power, tuned to do 2kw continuous ( it can handle it, it's underrated ).
I could still pretty easily flip the bike over for a tire change or carry it upstairs with a few grunts along the way
Some people claim that hubsinks and ferrofluid on such a small motor increase it's continuous capability to 2.5-3kw.
The mxus 3kw ( or one of it's clones ) gets you 2 more lbs and a more likely realistic rating for the 45mm hubs is around 2500w continuous.. add ferrofluid and/or a hubsink and you are up to meeting a 3kw continuous requirement.
( yes, i owned a leafmotor and a MXUS 3kw.. the 3kw was very underwhelming. Later found out that the 3kw rating was done in a 20" wheel, which is a real cheater way to do it. )
Otherwise if you want low weight and high power, RC motors with dual stage reductions to the rear are the only way to go. But those setups are kinda exotic and still in the 'fabricators only need apply' stage at this time.