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Old 04-15-2013, 06:00 PM   #1
Scottyd
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Default Exceed Rocket Motors

Hello, newbie here.

Does anyone have experience with the Exceed Rocket Motors?

They appear to be 2/3 the weight of comparable motors.

I'm looking at the 3520 series to convert my World Models P-82 to electric. Would have put link, but not allowed.....

Could they be using aluminum windings?

thanks,
Scott
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Old 04-16-2013, 01:00 AM   #2
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Originally Posted by Scottyd View Post
Hello, newbie here.

Does anyone have experience with the Exceed Rocket Motors?

They appear to be 2/3 the weight of comparable motors.

I'm looking at the 3520 series to convert my World Models P-82 to electric. Would have put link, but not allowed.....

Could they be using aluminum windings?

thanks,
Scott
I'd be very surprised if these motors used aluminum wire for their windings. Aluminum has far to many problems when interfacing with copper conductors.

What wing span, wing area, model weight is yuor World Models P-82? There is a very wide variety of motors available on the market, from little bitty motors for 10 ounce or less model airplanes, to giant monster motors that pull 25 pound models straight up.

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Old 04-18-2013, 10:27 AM   #3
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Originally Posted by Scottyd View Post
Does anyone have experience with the Exceed Rocket Motors? They appear to be 2/3 the weight of comparable motors.
I'm looking at the 3520 series thanks, Scott
Hello Scott: I have looked at the Exceed Rocket motors -there is a huge range of them.
-They are NOT lighter than other same size motors. The ones with 3520 stator are "40-size" motors and have diam ~42-43mm, and are 46mm long. Some people call them "4240" or "4246" motors in terms of external dimension.

A very similar size motor -that ALSO has a 3520 stator -is the Turnigy SK3 4240-530kv, 14T -this has weight of only 195g
This is EXACTLY THE SAME IDENTICAL MOTOR as the Hacker A40-14 S, Kv 530, 14T -which weighs 208g.

See: RCU thread called: "Which chinese factories make various brushless motor brands?"

Of course the Turnigy SK3 is only 1/4 the price of the Hacker -despite the fact they both use exactly the same internal parts, and are both made together in the SunRay Tech factory

Hope this helps
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Old 04-18-2013, 07:38 PM   #4
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Originally Posted by MatrixJet View Post
A very similar size motor -that ALSO has a 3520 stator -is the Turnigy SK3 4240-530kv, 14T -this has weight of only 195g
This is EXACTLY THE SAME IDENTICAL MOTOR as the Hacker A40-14 S, Kv 530, 14T -which weighs 208g.
It would be interesting to take these two motors apart, lay them side by side, and compare stuff. I've got one motor similar in size to my Hacker A40-10L motor. The insides of these two motors are not even similar, even though the outside dimensions are near identical. And, it's price tag is similar to the Turnigy motor.

But, that Turnigy motor certainly has a good price tag on it.

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Old 04-19-2013, 06:54 AM   #5
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Default Turnig SK3 motors -are identical to Hacker, made in same factory

Hello kyleservicetech:
THE TURNIGY SK3 MOTORS ARE ALL TOTALLY IDENTICAL TO HACKER MOTORS, IN EVERY SINGLE RESPECT
They are IDENTICAL inside to Hackler motors, and they also have IDENTICAL performance figures to Hacker on the Motor Test Stand
-And they also both made in the same SunRay Technology factory, in Shenzhen, China

see: http://www.rcuniverse.com/forum/m_11473040/tm.htm
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Old 04-19-2013, 06:56 AM   #6
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Default Also see:

Also see: http://www.rcuniverse.com/forum/m_11426913/tm.htm


"Which chinese factories make various brushless motor brands?"
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Old 04-19-2013, 07:01 AM   #7
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Default Only difference -Hacker cost 4 times more than Turnigy SK3

kyleservicetech: The ONLY difference between Hacker and Turnigy SK3 motors is:
a. Hacker are purple on outside, with black end housings;

b. Hacker have 4 small bolts attaching the hub prop adaptor to the rear motor housing, whereas SK3 have 3 bolts

c. Hacker cost 4 times as much as Turnigy SK3 -for the exact same totally identical motor
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Old 04-19-2013, 07:05 AM   #8
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These following brands of motors are ALSO made in the SunRay Tech factory; And they are ALL completely the same as Hacker inside, and they ALL have identical performance to Hacker motors:

Extreme Flight Torque, Z-series Hyperion; and also Shulman Aviation FURY, Gens Ace, Common-Sense-RC, LiPolice, OK Hobby Infinite, Pelikan Foxy, Apache, Pilotage Nova-Line, Sonic Electric, Worlds Models, BMI Models "Spitz" motors, Precision Aerobatics Thrust motors, Waypoint E-series motors, Viper VA, Boost motors (from Pichler -sold by Robotbirds in UK), Lipotech, MegaPower Taurus, JP E-Pro motors; ELE motors (now discontinued)

Also it is known that these motors are made in the SunRay Technology factory:
O.S. "OMA" motors, and also Futaba 50mm diam brushless motors

see: http://www.rcuniverse.com/forum/m_11426913/tm.htm
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Old 04-19-2013, 12:57 PM   #9
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Not quite identical because most Hackers have a cooling fan built into the end of the 'can'. The SK3 doesn’t have this which may have an impact on cooling and so how many amps the motor can tolerate.
Some of the SK3's also are not as strong as the Hacker at the end of the stator where the cross mount fits, I snapped an SK3 in half at this point.

But in general I agree that the SK3 is very close to a Hacker and definitely looks like it's made on the same production line. The iron core and the winding are visually the same and the magnets appear to be the same too. Most parts seem to be interchangeable. This is based on having stripped both motors down.

One thing that is very different between the SK3 and Hacker is the level of customer service. When I broke a Hacker I got a brand new one free of charge direct from Hacker after sending a photo of the busted motor. When my SK3 broke after only a handful of flights I was told I’d have to mail all the bits to China for inspection (at my cost), which would have cost more than the value of the motor and I’d have doubtless been told it was my fault anyway. When it comes to customer service you do se em to get what you pay for.
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Old 04-19-2013, 02:58 PM   #10
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Originally Posted by JetPlaneFlyer View Post
Not quite identical because most Hackers have a cooling fan built into the end of the 'can'. The SK3 doesn’t have this which may have an impact on cooling and so how many amps the motor can tolerate.
Some of the SK3's also are not as strong as the Hacker at the end of the stator where the cross mount fits, I snapped an SK3 in half at this point.

But in general I agree that the SK3 is very close to a Hacker and definitely looks like it's made on the same production line. The iron core and the winding are visually the same and the magnets appear to be the same too. Most parts seem to be interchangeable. This is based on having stripped both motors down.

One thing that is very different between the SK3 and Hacker is the level of customer service.
Hello JetPlaneFlyer: I am the one who has done all the testing, and the investigation.
I KNOW for a fact that Turnigy SK3 motors are made in the SunRay Tech factory, along with Hacker, E-F Torque, and all the other brands ...

I have stripped down a Hacker A10-9 L, A20-22 L and A30-12 L, and I do not see any obvious cooling fan at the end of the rotating can (i.e. "bell").
For the A30-12 L, there IS an arrangement of spokes, but it is not obviously a cooling fan.

BASICALLY: All Hacker and Turnigy SK3 and Hyperion-Z, and E-F Torque and Gens Ace and all the others ....
Basically they are ALL the same motor, made in the same factory.
They all give IDENTICAL results, when careful and rigorous testing is done on the Motor Test Stand.

The main difference between them, is that Hacker and E-F Torque cost 4 times as much a same-size OK Hobby Infinite, Turnigy SK3 -and 3 times as much as a same-size Gens Ace or Hyperion-Z (from Aircraft World)

see: http://www.rcuniverse.com/forum/m_11426913/tm.htm
-for more detail
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Old 04-19-2013, 05:12 PM   #11
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Hacker A30, A40 and A50 motors all have fans built into the end of the rotor, here is the actual fan as a spare part: http://www.hacker-motor-shop.com/e-v...=3&c=441&p=441

How much difference it makes I don't know but it is a 'difference' so its factually incorrect to say the motors are totally identical.

The static part of the motors are almost identical, but even there I have noticed a tiny differences. All Hackers have a retaining thread tied around the top of the winding, to keep the windings in place. The SK3 motors I've seen dont have this thread. Here's a photo i found on the net, it's not well focussed but you can just about see the white thread tied around the top of the windings on the hacker (left), the SK3 doesn't have any.


It's only a minor difference but possibly proof that they are at least made to a slightly different build standard, even if in the same factory.
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Old 04-19-2013, 05:31 PM   #12
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Default Its my photo ..!

JetPlaneFlyer: The photo that you show, of the stator of the Hacker A30-12L vs Turnigy 3542-1000Kv -IS ACTUALLY MY PHOTO !
From the RCU thread I started: http://www.rcuniverse.com/forum/m_11473040/tm.htm
" Hacker A30-12L vs Turnigy SK3 3542-1000Kv -Head to Head PERFORMANCE TEST "

I discuss the white strands on the outer of the Hacker stator in this post: http://www.rcuniverse.com/forum/fb.asp?m=11481166

NOT ALL Hacker motors have these white strands -the A10 and A20 motors do not.

Re: the "fan" - I do not see how it works as a fan at all. It does not have any blades that would move air in one direction or the other. It may just be a gimmick ...

Finally, it is fine discussing this whole matter, but it is not really appropriate for a thread about Exceed Rocket motors ...

IF we want to discuss this whoe business some more, we should start a new thread.
Dr M
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Old 04-19-2013, 11:07 PM   #13
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Originally Posted by MatrixJet View Post

Re: the "fan" - I do not see how it works as a fan at all. It does not have any blades that would move air in one direction or the other. It may just be a gimmick ...
Take a look at a sump pump rotor. Same thing.

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Old 04-20-2013, 08:42 AM   #14
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yeh, it's basically a centrifugal blower.. this is a very well proven type of fan. It works by spinning the air which then gets thrown outward by centrifugal force. It works!

You can see similar blades in this picture of an industrial air blower:
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Old 05-05-2013, 06:09 AM   #15
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ok. thanks
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Old 05-05-2013, 05:35 PM   #16
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To the original poster, I have used several sizes of the Exceed Rocket motors and they are one of the first ones I look for when doing a new project. I love them and haven't blown one up yet.
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