Prop Spacer for 6mm Extended Shaft
thingiverse
Prop spacer for Cobra motors that can be outfitted with an extended shaft by Innov8tive Designs, part number C-BPAL-28 (4-Hole), pushes the prop back 19mm. UPDATE 3/30/18: A 5mm spacer has been added for those looking for a smaller extension. This spacer was tested on my HC44 at high speeds and performed well. UPDATE 3/27/18: After testing, I found that perfect thrust angle is essential to use this prop spacer. Any deviation will be exaggerated by extending the prop rearward, requiring tuning to get desired performance. However, I do not recommend using this spacer in high-speed applications. UPDATE 3/26/18: Install as shown in the picture. Other configurations may unbalance the prop. A lock washer is placed between the prop and nut. Motor > Extended Adapter > Prop Spacer > Supplied Thick Black Washer > Prop > Lock Washer > Lock Nut.
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