12 kw rc motor

[Arlo1]

Just a thought from one ignorant about much about electric motors, would it be possible to cnc machine copper to perfectly fill the spaces?

I belive you will see more of that soon.
I have seen one turn motors with aluminum machined to fill the slots!

 

[olaf-lampe]

Just a thought from one ignorant about much about electric motors, would it be possible to cnc machine copper to perfectly fill the spaces?

I belive you will see more of that soon.
I have seen one turn motors with aluminum machined to fill the slots!

Are you sure that weren't asynchron motors?
-Olaf

 

[Biff]

I belive you will see more of that soon.
I have seen one turn motors with aluminum machined to fill the slots!

Are you sure that weren't asynchron motors?
-Olaf

http://www.ecycle.com/motorgenerator/SolidSlot.htm

 

[liveforphysics]

I belive you will see more of that soon.
I have seen one turn motors with aluminum machined to fill the slots!

Are you sure that weren't asynchron motors?
-Olaf

http://www.ecycle.com/motorgenerator/SolidSlot.htm

Solid slot motors are pretty cool. I would hate to have to be the controller, but the motor would be very rugged.

They have a motor with an improvement over the solid slot's 90% copper fill. It's the high pressure injection molded copper stator motors, but I'm not sure they have gone into mass production (because it's a bitch to cast a large amount of copper into narrow channels in a large amount of iron).

I remember reading a tech paper and watching a couple videos online about how they were casting it, but it's 1AM here in China and the comfy bed is looking more tempting than digging up a white paper.

 

[markobetti]

lfp , where are you right now in China ?

 

[crap]

The solid slot motors seem great, but they may end up suffering from skin effect. The use of aluminium reduces this effect, but then again aluminium has less conductivity to begin with. In some situations, solid slot can be great. But thorough calculations must be made to check that it actually pays of. It obviously has the inverse effect of using litz wire or similar.

 

[dangerzone]

The solid slot motors seem great, but they may end up suffering from skin effect. The use of aluminium reduces this effect, but then again aluminium has less conductivity to begin with. In some situations, solid slot can be great. But thorough calculations must be made to check that it actually pays of. It obviously has the inverse effect of using litz wire or similar.

I was just wondering, what if those solid slot windings would have been made of pure silver. Apart the fact that it would be expensive, wouldn't such a motor have more conductivity and less skin effect? Then if the filling would have been made of Mu.metal even the eddy currents would be close to zero. Hypothetically, of course, I'm just wondering about calculations..?

 

[olaf-lampe]

The solid slot motors seem great, but they may end up suffering from skin effect. The use of aluminium reduces this effect, but then again aluminium has less conductivity to begin with. In some situations, solid slot can be great. But thorough calculations must be made to check that it actually pays of. It obviously has the inverse effect of using litz wire or similar.

I was just wondering, what if those solid slot windings would have been made of pure silver. Apart the fact that it would be expensive, wouldn't such a motor have more conductivity and less skin effect? Then if the filling would have been made of Mu.metal even the eddy currents would be close to zero. Hypothetically, of course, I'm just wondering about calculations..?

Actually, we are working with a company, which uses nano-silver for their batteries...
Would be great, if one could make a compound with a little bit of resin and the silver powder and simply flood the slots.
-Olaf

 

[crap]

The solid slot motors seem great, but they may end up suffering from skin effect. The use of aluminium reduces this effect, but then again aluminium has less conductivity to begin with. In some situations, solid slot can be great. But thorough calculations must be made to check that it actually pays of. It obviously has the inverse effect of using litz wire or similar.

I was just wondering, what if those solid slot windings would have been made of pure silver. Apart the fact that it would be expensive, wouldn't such a motor have more conductivity and less skin effect? Then if the filling would have been made of Mu.metal even the eddy currents would be close to zero. Hypothetically, of course, I'm just wondering about calculations..?

Actually, better conductivity makes the skin effect worse. That is probably part of the reason why aluminium is used instead of copper in those motors, the better conducticity of copper counts for less and thus the higher cost is no longer justified. However, using silver plated alumium bars, or copper plated aluminium bars, could have good results.

 

[Arlo1]

The aluminum solid slot is used for two reasons. Weight reductuion and better (lower resistance)
Solid copper would be better (even lower resistance) but we already have problems with controlers staying together so a aluminum solid slot will conduct better then a wound copper stator and be lighter but needs lots of slots in series or a low voltage system!!!!

 

[tomaj]

I have finally found a proper motorcycle for my EV conversion Hyosung GT650N.

So, where can I buy one or maybe two of these great motors? I am from Slovenia. Which controller is going to work with it? If possible with regenarative braking and under 1000€

Thanks for the answers

 

[markobetti]

Pa jesi li citao thread. Mi smo u Hrvatskoj

 

[tony16]

So are you reading thread. We are in Croatia

Хорватия хорошо - близко от меня!

Croatia Well - close to me!
price in PM please.

 

[markobetti]

For all people asking here and on pm . The answer is the same. We gave it to testing lab. The other one is in Hals garage and he will have real time - real life results on DeGeNeRiC motorcycle conversion project . The 36 fet controller is paired with colossus . Hal will probably test it also with Kelly if he has time . And i have found pure sinewave controller for the motor after months of trying to find it. Its being custom produced for us as we speek and will be in Croatia in 2.5 weeks. Other than that , i will share info with Arlo and Splinter on progress since they are helping with their projects and need my help also . We will post results it think in 3 weeks or so . This thing took too much time ,money and effort . when Hal is satisfied we will post the best options on how to use motor - what kind of controller is best option for low rpm, gear ratio .. etc.... There will be no sale thread at all before everything is clear and engineers and Hal have their sayings ..

 

[boostjuice]

Thanks Marko. I think most of us are happy to wait for a tried and tested product, rather than smoking controllers ourselves trying to find a working combination.

 

[AussieJester]

Welcome to the forum jackmark, do you have anymore info
on the contoller on the right please mate? I'm in the market for
something iwont blow up so easily on my smaller Turnigy
80-100 130KV motor...cheers in advance

KiM

 

[Miles]

I doubt he does, Kim. Now, if you were after .Net training in Ahmedebad, then......

 

[dozentrio]

the controller is a Jeti Spin 300 and the picture is from http://www.rcgroups.com/forums/showthread.php?t=928818

Any word on how these high current RC controllers hold up? I might be switching from the ever-increasing number of 4110s in parallel strategy to RC if it works alright

 

[liveforphysics]

The Jeti-opti-200 lasted roughly 30sec before spitting plasma. I think Garys lasted under 30secs. And this colossus is about 6 times harder on a controller...

IMO, Jeti = big price tag for stuff worse than hobbyking cheapos.

 

[Arlo1]

I have an order in for a sevcon G8055. I will run collossus with a sevcon and eventualy rewind it for max effieciency.
With the second collossus I am still going to rewind as a 9 phase so I need one more 24 fet bord and one more 36 fet bord to build my 3 bord 9 phase controller!
So if anyone has a 24 fet kit or 36 fet kit or pcb please let me know.
Thanks.
I layed up 4 of 5 peices of Carbon fiber bodywork last night for the YSR and should have it finnished by the end of the month. I am in ottowa till the 17th so I hope to have a pacage or two to pick up when I return home so I can finish my Kickass E-ysr build!

 

[Alan B]

Carbond fiber sounds like a great material! (quick trademark that name) :lol:

 

[Arlo1]

Carbond fiber sounds like a great material! (quick trademark that name) :lol:

Post edited lol there is no spell check on this thing!

 

[Alan B]

That depends on your browser, perhaps. Mine seems to indicate incorrect spelling though it doesn't help fixing it.

 

[dangerzone]

I have an order in for a sevcon G8055. I will run collossus with a sevcon and eventualy rewind it for max effieciency.
With the second collossus I am still going to rewind as a 9 phase so I need one more 24 fet bord and one more 36 fet bord to build my 3 bord 9 phase controller!
So if anyone has a 24 fet kit or 36 fet kit or pcb please let me know.
Thanks.
I layed up 4 of 5 peices of Carbon fiber bodywork last night for the YSR and should have it finnished by the end of the month. I am in ottowa till the 17th so I hope to have a pacage or two to pick up when I return home so I can finish my Kickass E-ysr build!

What is the max rpm of the G8055..?

 

[REdiculous]

That depends on your browser, perhaps. Mine seems to indicate incorrect spelling though it doesn't help fixing it.

On my system you can right-click a misspelled word and it'll pop up with a guess if you got close to a real word. Sometimes I get a list of guesses..right-clicking "Carbond" gives me 'Carbon', 'Carbons', 'Car-bond' and 'Car bond' as guesses, for example. 8)