Thread: Discussion Change Sun 12 blade 120mm
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Old Jan 04, 2013, 09:50 AM
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United States, TX, Grand Prairie
Joined Nov 2005
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Originally Posted by buckaroo View Post
Matchpoint could you elaborate a little. Did you need longer shafts because the motor does not fit inside the tube, or was there other factors involved.

Instead of taking the ribs away from the SK motor you can also take away around .5mm from the inside of the can holder with a 5usd whole drill...I think I have the bit posted upthread.

The SK3 560kv motor HK sells can have the shaft changed with a 8mm steel shaft from MC-Master Car.... I bought around 4 motors worth of 8mm shaft....20usd just to make sure

Then you reinforce the mount and PU the blades..

Took me a couple of hours (I changed the shaft on an scorpion motor though) and well worth it.

The sound you see in all my 120mm vids is the fan with a slight unbalance at low to mid RPM so they can run quieter than what you hear in the vid...

75usd - SK3 motor
75usd - fan
90usd - 14s 120 esc

18lbs 12oz of thrust on 14s at 120 amp 250-ish usd for everything and some elbow grease = nice
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Last edited by erh7771; Jan 09, 2013 at 10:42 AM.
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