Adapting a Star-Shaped Propeller Mount to a Round Mount with a Pin – Looking for Feedback

Build, Repair & Mod
1

Hi everyone,

I’m looking to adapt a star-shaped propeller mount to a round mount with a pin on a brushless motor. Has anyone successfully made this modification before?

I’m particularly interested in whether 3D printing could be a viable solution to create a strong adapter. Has anyone tried this approach?

I’d love to hear about any possible solutions:

  • Are there existing adapter parts available?**
  • 3D Printing: Which material would you recommend (Nylon, PETG, Carbon, etc.)?
  • DIY machining: Any mechanical constraints to consider?**
  • Potential risks (alignment, vibrations, strength)?**

If you have pictures, STL files, or references to suitable parts, that would be great! Thanks in advance for your feedback.

Picture 1

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Picture 2 :

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2

Not very clear about what you are trying to do??

Do you have a smooth bore prop that you want to mount on a splined shaft or……?

3

I changed a splined shaft to use props from a round shaft.

I used a mini mill and cabide bit to bore the pin hole and then trim some of the splined section so that the prop could mount properly.

I ran the motors slowly while i was milling the shaft so that it was perfecly centred.

2 Likes
4

I want to go from a star shape to a round one with the pin.

Thanks for the info, I’ll give it a try. What worries me the most is drilling the hole for the pin perfectly straight.

5

You can use a 3d printed drill guide, optionally with a small bearing with id 4mm as an insert.