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Hobbyzone Super Cub Brushless Motor Upgrade

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Hobbyzone Super Cub Brushless Motor Upgrade

Old 03-22-2015, 05:43 PM
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ArcadeAir
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Default Hobbyzone Super Cub Brushless Motor Upgrade

Hi Folks
I wanted to share this motor upgrade of my Hobbyzone Super Cub.
I selected a Park 480 1320KV motor, a RCTimer 30 amp esc and the FrSky X8R receiver for this upgrade.



First, removed the old brushed motor and gearbox assembly, then removed the old Spektrum receiver / brushed ESC. Before removing the motor, I measured the distance from the fire wall to the prop shaft so that I could get the new motor's shaft to wind up in the same place. I discovered that I would need to shim the new motor out by 1 inch to accommodate fitting the engine cowl properly.



This pic shows the size difference from the old brushed setup and the new brushless power plant.



Next, from my measurements, I determined the location of the motor mounting screws. I am using 1 5/8 inch #6 fine thread drywall screws for the task. I pre drilled the new mounting hole locations so that the plastic fire wall would not split. The thrust angle is built into the fire wall, so I did not have to worry about getting the motor angled properly.



Then, I used a large drill bit to counter sink the new motor mount so that it would accept the drywall screws. It is not the perfect angle, but the screws should hold good and tight.



Now I had to find some kind of a spacer to get the new motor extended outward by one inch. I found these pegboard spacers at the local hardware store. Each one is 1/2 inch. By stacking 2 each on all four screws, I got my one inch extension.



My pre drilled holes seemed too small, so I re-drilled them a few sizes larger, then attached the new motor and mount.

After the screws were good and tight, I put a drop of hot melt on the screws to keep any vibration from loosening them.



The motor placement was almost perfect. I had to nibble out a little bit of the cowl for clearance.



With the cowl back on, everything is looking good.

I will add part two tomorrow. I can show you the installation of the electronics and possibly a video of the run-up.

Thanks for looking!
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Old 03-23-2015, 10:44 AM
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ArcadeAir
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Part Two:



The motor leads were not long enough to reach inside the fuse, so I had to solder extensions on. I also soldered 4mm bullet connectors on the leads and the ESC. Shrink tubing was used on all solder joints also.



Now Ive got everything plugged in and Im ready to bind the receiver to my FrSky Taranis Plus !



Everything is mounted with two sided adhesive vel-cro.



Last but not least, a wheel upgrade. I used Dubro 3" wheels for grass landings.
The telemetry is all set up for my receiver voltage and RSSI. I have voice alerts set to alert me of impending doom.
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Old 04-28-2015, 05:39 AM
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Finally got a good flight in with the updated Super Cub. I had to add weight to the nose... it was tail heavy and un flyable. With the CG in good shape, she flies great... Lots of power too!
Old 02-01-2021, 08:14 PM
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Default laurencekeeton

Originally Posted by ArcadeAir View Post
Finally got a good flight in with the updated Super Cub. I had to add weight to the nose... it was tail heavy and un flyable. With the CG in good shape, she flies great... Lots of power too!
What batteries did you use?

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