RCU Forums - View Single Post - Contra Rotating Propeller Drive for f3a 2m Pattern Planes
Old 11-30-2016 | 05:10 PM
  #1725  
Brenner
 
Joined: Jul 2007
Posts: 806
Received 12 Likes on 11 Posts
From: Bridgman, MI
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Hey Henning,

Your plate and mount looks good.

We are going to build this mount and test it as well. According to my calculations it will probably add about 30g to the system if we use aluminum rods, but even with this added weight the complete system will still be extremely light.

We are are going to try three rods instead of four so that can reuse the motor mount bolts to hold the rods. We will combine this with a ball bearing rear support, and reuse the EAR Specialties grommets, except that we will replace the plastic spacers in the grommets with aluminum spacers.

This should result in a system that keeps the rear support bearing in perfect alignment with the motor, and provides a firm, but fully isolated mount.

Brenner ...