Has any body got any good research resources for winding your own motors? Thus far I’ve found more info on the EV forums than anywhere else
Make a search for motor rewind and you’ll find plenty of interesting things.
Got parts to make them if u want to
I kinda want to try this, just to say I did it.
@Hummie, do you have a full setup on hand?
yup. it doesn’t make a normal motor but a skate hub motor. even better
how much for the parts/kit? Does it include everything or is there sourcing to be done, is there any machine work needed?
all the machining is done. Id give you the bell with the magnets epoxied inside and the stator mounted so all you’d need to do is wind it and add phase wires and get some really thin high heat epoxy to paint the windings to keep them solid from vibrations. omega sells an envelope of stuff you can heat and it turns to almost water consistency, remove the envelop separator to mix it and coat the winding but not on the bearings, wait till it dries and good to go.
thanks i’ll try now, wind your own motors & research motor winding turned up 0
That sounds fun, how much for the kit and can you post a link to the high heat epoxy?
Ye, how much and some pics maybe? Almost all epoxy should work btw, i have some heat resistant but almost all of the time i just use the normal stuff, cause i like the viscosity more, and the finish
Thanks @Hummie, I’m still in research phase for the moment. My initial thought was to take something like this scorpion HK-4535 kit that scorpion wind like this HK-4535-450KV for example, but with a delta wind at a lower KV. Found some good info here and some more on other sights now like this turn calculator. Have you got a link to the LC meter (hope I got that right) you bought for $15 you are using to test resistance and to look for shorts? & finally what design features optimize a motor to run at a different voltage. For example I see motors of the above linked size rated for between 10s and 14s?
really like the envelop as it’s a two part epoxy you can heat with them separated then pull the clip off to mix them and pour. no mess.
I don’t know how much I’d sell all the parts for and have to see what the flying price of magnets is doing today. But if you look at the gold motor in the first post, Scorpion motor kits are definitely more expensive, smaller, and have very similar quality stator, if what I have isn’t even better at .2mm lams and there’s I think .25, and the magnets…they might win there as they have access to some unknown supply I’ve never seen anywhere for what I think are n50sh and I have n48sh these days. both curved. I could go on and on.
the voltage that is best to “optimize” would be the most efficient for the speed you run the motor at. Lets say you have 12s battery and a 100kv hub motors and you ride at 20mph. you will be sunk at maybe 60 percent efficiency. but if you have a 60kv motor doing 20 you would maybe be at 85 percent efficiency. the motor is most efficient when youre riding at close to its max rpm. you can adjust the kv, or voltage to suit. so you could go max 20 and be much more efficient. 60 vs 85 equates to over twice as efficient. but if you want to go 30mph your out of luck cause your motor will be too small for the job unless it’s big enough, and has a better km number. kv tells how much torque you get per amp and that could be a motor as big as your car or small as an eraser, the lower the kv, means the inverse, kt, which is the torque constant, is higher, kv being the speed constant. so any motor if would to a lower kv will have more torque per amp, but the km, motor size constant, reveals the efficiency of the motor, so a big big motor will have a good km number and be most efficient regardless of the wind.
if you do a search on amazon you should be able to find a lot of sellers of the L/c meter I have. does inductance and capacitance with awesome accuracy. one day I’ll hook up some long wire and see what strange shapes could create inductance or capacitance. I use it to not have to count the turns I wind on the tooth. you can just look at the number and try to match all the teeth or phases. it also is a great revealer of shorts. it also shows you if youre doing a crappy winding job and not keeping the windings in line.
stated motor voltages are really only based on the bearing top speed. you can go higher voltage especially with better bearings.
Go on dude, I’m listening said above kit comes with what they call NdFeB motor magnets they state The stators are made with 0.2mm laminations
so .2 lams they have in that. very nice. I know they do others too. niodimium mags just like all of us. but bit stronger. and good machining at .4mm air gap. better than you’ll get at hobbyking. got that. but the price for the size you get…compare it to the 4752 stators and magnets I have and there’s no comparison. not that I have a price yet but know it will be much cheaper
to really SEE what happens, which tells a lot, check out grin tech motor simulator tool and vary voltage of the battery. or the speed.
I don’t have a price but will post pics and a price tonight. with wheels. another day off the job trying to find someone who wants to do the fusion360 3ds with me. if you want a deal on these parts…
That looks like it @akhlut although here for $20.61 I’ll have to go checkout fleabay though Amazon shipping to Au is $$$