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Old 05-24-2012, 05:29 PM   #1
SKYQUEST
 

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Question Cut Quantum motor shaft too short... Now, which shaft?

I cut my brand new Quantum motor's shaft too short last week. I was informed that the Scorpion HKIII series of motor shafts are a direct fit for the Quantum motors.

Is this a direct fit for a Quantum 4135-530kv motor?
http://www.scorpionsystem.com/catalo...II_4035_Shaft/

Thanks to those who know the answer!
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Old 05-24-2012, 06:28 PM   #2
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Yep. That's the 8mm shaft turned down to 6mm on the pinion side. From what I was told the shaft sticks out of the top of the motor about 2mm but the set screws line up perfectly.

This repair was posted on another forum. Let me try and find it so you can read for yourself.


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Old 05-24-2012, 06:33 PM   #3
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Found it. He put the XL shaft on his quantum because the x7 has a stupidly big pinion.

The only difference is the XL shaft is 8mm longer.

http://www.helifreak.com/showpost.ph...25&postcount=6


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Old 05-24-2012, 06:37 PM   #4
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Which shaft fits the 4530-500 Quantum?
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Old 05-24-2012, 06:38 PM   #5
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Quote:
Originally Posted by cdsexton View Post
Yep. That's the 8mm shaft turned down to 6mm on the pinion side. From what I was told the shaft sticks out of the top of the motor about 2mm but the set screws line up perfectly.

This repair was posted on another forum. Let me try and find it so you can read for yourself.


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Thanks dude...I was sort of hoping you actually would chime in.
This should help my sale...or I may keep it.
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Old 05-24-2012, 06:38 PM   #6
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I would need to look up the stats in the 4530 quantum. But i bet the scorpion le shaft fits. 10mm with 6mm pinion.


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Old 05-24-2012, 06:41 PM   #7
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Quote:
Originally Posted by cdsexton View Post
I would need to look up the stats in the 4530 quantum. But i bet the scorpion le shaft fits. 10mm with 6mm pinion.


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Pretty sure the 4530 Quantum is 8mm internally.
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Old 05-24-2012, 07:09 PM   #8
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Of that's the case then it's the same shaft as Sky had posted above.


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Old 05-24-2012, 07:20 PM   #9
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Is it easy to pull the motor apart after the snap ring and set screws are removed?
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Old 05-24-2012, 08:35 PM   #10
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Quote:
Originally Posted by OnTheSnap View Post
Pretty sure the 4530 Quantum is 8mm internally.
I haven't opened one up but the front bearing is 8mm.

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Old 05-24-2012, 08:40 PM   #11
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I guess you have to press out the mainshaft...do you need to heat the case first?
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Old 05-24-2012, 09:01 PM   #12
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I just use an arbor press (or drill press). No heat.
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Old 05-24-2012, 09:09 PM   #13
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Ah yes. i literally just finished watching a youtube video on how to do this w/ a scorpion motor. Same procedure
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Old 05-25-2012, 12:54 PM   #14
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Quote:
Originally Posted by SKYQUEST View Post
Is it easy to pull the motor apart after the snap ring and set screws are removed?
Its as easy as any other motor. You just need a firm grip on the stator and the can.
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Old 05-25-2012, 02:17 PM   #15
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I thought the set screws did most of the shaft holding...they are just there for added assurance really. So, to Harbor freight after work I go to buy an arbor press.
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Old 09-02-2013, 05:22 PM   #16
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Is this one the same as the link in post #1

http://www.helidirect.com/scorpion-h...d-p-14143.hdx?
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Old 09-02-2013, 06:42 PM   #17
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http://www.helidirect.com/brushless-...19_44_1907.hdx all the quantum shafts are there no need for using any scorpions
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Old 09-02-2013, 06:43 PM   #18
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They don't have a shaft on HD that's fits the 530 only the 560.
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Old 09-02-2013, 07:00 PM   #19
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I Believe the link in post #1 is for the 'XL' version which is 100mm long for counterbearing use on some helis. The one you link to is the 94.7mm version. Both will work, just depends on if you need the extra 5mm to reach a counterbearing. If you need it for a Quantum 4530 it will fit. Just as a note the regular edition Quantum 4530 has a shaft length of 102.85mm and the Goblin edition is 89.25mm.
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Old 09-02-2013, 07:05 PM   #20
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I have a 530 that I'm selling and was going to buy a new shaft for itnsince thenone in it is currently cut. Was just trying ti figure out whch one works for it.
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