Thud wrote:please see above edits. I thin i got mm
Miles wrote:That's often the case, but not necessarily so. You'd need to know the thermal rating, to be sure. Strictly, N48 and N42 have the same thermal rating:enoob wrote:may be wrong but i saw that those ones are n48 , while stronger the 42's apparently deal with heat a little better. so i took the bait.
Jonathan in Hiram wrote:I recall reading about a motor somewhere that had the poles angled at 45 degrees, supposedly it increased torque, something to do with maximizing the area of the air gap..
Would something like this produce more torque than the first design I showed?
ETA: One advantage I can see is that it can be made thinner than a lot of the other axial flux designs since the width of the iron is only the same as the longest part of the magnet.
paultrafalgar wrote:Before you die of laughing at his manner, remember, he makes better electric motors and vehicles than anyone! Enjoy!
enoob wrote: ill have 2 rotors to play with and see if this boat will float or not.
AussieJester wrote:VERY nice work there enoob your using a mill to get that sort of accuracy im guessing?
p.s BEER improves reflexes, thought processes and accuracy levels! i read it somewhere....or was that hinders.... :: looks at can of beer on desk ::
def215 wrote:wow. you have some skill there. im in to see the finished product.
also, just a suggestion to the drillbit wander. a good way that ive figured out to stop it is to take a sharp, pointy object, i.e. nail, knife, needle, just something sharp and pointy. put it on the spot you are going to drill at. smack the top of the sharp object with a hammer making a mark(more dimple-like shape) on the metal. put the drill into the mark and drill slowly to start it then when it starts to dig in, finish off the hole. so far ive been successful with that technique to address drill wandering.
enoob wrote:ok brains i got a
Been reading up on the ironless stator as i think im getting close to needing that piece soon . problem is as im getting deeper into it im reading that iron in the core = better efficiency at low rpm . ironless core's seem to make ground as the rpm get high . if so what are the factors that determine the point where its beneficial to be ironless ? rpm alone ? over all design ?
im hoping to be able to get a kv around or under 100 per volt . 48v =4800 rpm . i highly doubt the motor will see continuous WOT so for now ill assume 3k rpm to be an average .
Does 3000 rpm benefit from an ironless stator
But untill I can get my mits on some flat copper in a apropriate size (without breaking my wallet)
That whole iron question is the big one in my head also. But untill I can get my mits on some flat copper in a apropriate size (without breaking my wallet) I am just going to play with cores & coil configs. I am anxious to see how a true ironless motor performs in testing though. I may have a go at building a rolling shear & cutting my own flat stock.( I see that as an advantage in an ironless design)
As for drill wander, it sucks! if anyone ever asks what is the most used tool in my shop I have to say my Drill doctor. I have the cheapest version in the line & the thing just rocks!
I bought mine at menards on sale for $50 & I use it all the time. it just works & a as a pro woodworker having sharp tools is a matter of pride.
At entry level design stages, the motor will be helped by iron at all points. You gotta really have your design tits-on before ironless starts to help at any RPM point.
Miles wrote:Nice to see this taking shape, enoob
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