Looking for info about Revolt motors

Wheazel · Apr 11, 2014

Hi

Stumbeled across this when browsing the web.
Anyone here with experience from these motors?

http://www.revolt.org.il/

There are two models, the rv-100 and the rv-120.
The rv-100 has a mass of 2,7kg. and a kv of 57.

Wheazel · Apr 11, 2014

They also have some pretty bad vids on youtube.
http://www.youtube.com/channel/UCoDXf0xZ9H6EVyzlzfjUJsw

Dauntless · Apr 11, 2014

http://www.youtube.com/watch?v=ajOlKuVUkeo

Yeah, Borat had some more interesting info on that one. Plus there's some great videos on the page i hadn't seen.

I almost want to call the RV-120 'Promising.' KV45, 15kw peak power, $245 plus $27 shipping.

http://www.revolt.org.il/rv-120/

Wheazel · Apr 12, 2014

I would agree that from the specs shown, they look promising.
The kv is appealing, and the price is good compared to an astro for example.

Wheazel · May 5, 2014

I did ask some questions to revolt motors and got replies very fast.
Unfortunately they have no real datagraphs of the motors, nor do they have any efficiencymeasurements at all.

But besides the lack of information I think they look intresting and I am ready to buy one and try it out.
The price is cheap enough for that.

They also offer controllers to go with the motor, here is a mailreply regarding this:

No efficiency data,but I can tell you that the motors have good efficiency.
The efficiency also depend on the controller.
For 1-2KW I recomend on the RV-100, the lamination Thickness is 0.3mm, good quality silicon steel come from KOREA, the motor have good colling effect,
For 1-2KW there no need cooling fan.
We have also 12pcs IRFB4110 Mosfets (very low resistent) 30A ,(36V-72V) , and 15pcs IRFB4410 Mosfets 45A (36V-84V) controllers ,they are high efficiency controllers and good for the RV-100.
Regards
Alexey.K
http://www.revolt.org.il/
Revolt(2012) Ltd
Israel

2014-05-05 14:54 GMT+02:00 Henrik

Hi

Got any efficiencydata at all?
I am primarily looking for low power operation, 1-2kw.

/Henrik

I am thinking I dont wanna put this big of a motor on the Phoenix hv160 I own today, would any of the proposed controllers be a good alternative?
Edit* I will be using a 18650 12s15p battery.

Dauntless · May 5, 2014

Here's what I would consider the comparable motor. http://electricmotorsport.com/ev-parts/motors/me1305-pmac-motor-24-48v-6-hp-cont-15-hp-pk.html Exact match you can't come by. You could buy two of the Revolts for less than this one. The Revolt weighs about half. Still, the detractors of motors like the 4 pound C80100 could at least recognize this thing is more substantial.

Kitted, http://electricmotorsport.com/ev-parts/motor-drive-kits-2/pmac-ssr-36-48v-275a-motor-drive-system.html I wonder what you could put a revolt system together for. Maybe it would even hold up.

Oh, I don't think your Phoenix would last. People burn those with half that draw from the C80100. Perhaps http://hobbyking.com/hobbyking/store/__25202__Turnigy_dlux_250A_HV_14s_60v_ESC.html or if your stomach isn't experimenting with fragile RC controllers, http://kellycontroller.com/ksl4830024v-48v300asensorless-bldc-controller-p-663.html

Wheazel · May 7, 2014

I did end up ordering a revolt rv100 with a winding for ~kV45.
Also ordered a controller they recommended with the revolt.

Will report back when I receive the items and how they turn out.

agniusm · May 8, 2014

Has anyone seen or used this motor: http://www.revolt.org.il/rv-120/
Specs
24-96V
45kv
5kW continues
15kW peak
Diameter 126mm
4.3kg
15mm shaft

Wheazel · May 9, 2014

It took them approx 6hours from that I sent the money until they had wound a stator with the aim of 45kV.
I then got a reply and they had tested the motor and it ended up at 49kV. They asked me if that was OK, and I replied yes.
Next day I had trackinginfo for the package in my mail.

I even got pictures mailed to me of the wound stator and later the completed motor.
Some crazy good service.

If this RV100 turns out good, I will most likely buy a rv120 for a light motorcycle project.

parabellum · May 9, 2014

Wheazel said:
I even got pictures mailed to me of the wound stator and later the completed motor.
Some crazy good service.

Can you share those pictures? Will you take it apart and share some motor porn on arrival?

Wheazel · May 12, 2014

Sure, these are the pics I got from Revolt during the build and pre shipment. I won't take the motor apart upon arrival if everything seems ok with it.
They did testrun it and I am eager to continue my build.

parabellum · May 12, 2014

Thanks. I hope this controller is just for reference there.

Other think, they could terminate it in Star for lil more efficiency.

Wheazel · May 13, 2014

No I also bought that controller because it was cheap, gonna try it out and see how it behaves.
Dont wanna put a 2,7kg motor on a CC160.

About termination they wanted to use delta, and claimed it was necessary for high current capability.
We will see about this tho, I am not going to push this motor and might reterminate it myself.

Miles · May 13, 2014

Wheazel said:
About termination they wanted to use delta, and claimed it was necessary for high current capability.

As opposed to low current requirement..... :mrgreen:

Wheazel · May 13, 2014

With the current kv of 49, I would land on just under kv 30 if reconfigured to star, correct?
With this in hindsight, maybe I should have ordered the standard winding of kv57 and specifically asked them for a star config.
Would have made more sense.

riba2233 · May 13, 2014

Whoa, this seems very interesting. What about hall sensors, I can't see any on the picture? Can they install them?

Wheazel · May 13, 2014

I didnt ask about halls as my train of thought have been roughly like this:

Buy a motor and try it, if good enough, buy or build a foc sinwave controller.
I think its appealing to not have to worry about halls at all.

On my previous rc motor build I had a centrifugal clutch on the motor, making torque from zero a nonissue.
Been thinking of this option aswell, but due to the low rpm of the motor, its harder to pull off with available parts.
Building a centrifugal clutch seems more work than getting a sinwave controller.

Dauntless · May 13, 2014

Can't imagine that controller surviving, but time will tell.

zEEz · May 13, 2014

massive motor, nice design, pretty laminations.
the offered method of mechanical support (mount) seems
not good in case of shocks and vibrations. Very curious! 8)

have fun!

parabellum · May 13, 2014

Wheazel said:
With the current kv of 49, I would land on just under kv 30 if reconfigured to star, correct?
With this in hindsight, maybe I should have ordered the standard winding of kv57 and specifically asked them for a star config.
Would have made more sense.

Yes. you would get less turns with more strands, which lowers resistance and almost gets your Y back to Delta resistance but higher efficiency. But at those 12 slot 7 poles motors, difference (edit: in efficiency) between Y and D is not that high, around 8-10% if I remember well.

litespeed · May 13, 2014

Looks promising!

Tom

riba2233 · May 21, 2014

Any news?

Wheazel · May 22, 2014

No more than that the mailservice choosen is veeery slow.
So far the tracking only tells me the package has left Israel with destination Sweden by surfacemail.
I would have paid some more for better shipping if I had known

Dauntless · May 22, 2014

So 17 days so far eh? Hmmmm.

So that RV-120 at 45kv would make 4,320rpm at 96v. Wonder if it could hold up.

So what's this "4% Paypal TAX?"

riba2233 · May 22, 2014

It's normal, PayPal takes 4% for every transaction. They just didn't include that in the price at the start, because you can pay via credit card and save that 4%.

Wheazel please let us know when it arrives! I'm very optimistic about this!

Looking for info about Revolt motors

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