VLV Contra Drive Spinner 90mm

Updated with an 85mm main cone diameter for smaller nosed models.  Overall length remains the same.

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Updated the files - I increased the thickness of the cone so it will print with 2 walls to improve the strength.  Also removed the cooling inlets, they do nothing and just take away from the appearance in my opinion.  Use the Nov 2024 files if you wish to have the thicker cone.

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I recommend using a 0.6mm nozzle for best interlayer adhesion, with a 0.3mm layer height.  Print with single wall only, 3 top/bottom layers.  

Material should be higher temperature resistant, PETG, ASA, PC etc. are all possible.  If you would like a little more strength you can print with a very fine “fuzzy skin” which provides reduced layer line visibility with a little better stiffness.

Print the cone parts upside down, with a brim on the smaller cone.  No supports required, see photo for print orientation.

The main cone backplate is glued into the main cone with CA after printing, make sure it fits flat against the small backplate wall that is part of the main cone.  Orientation is such that the protruding centering ring will fit into the rear Falcon propellor.  The VLV main prop nut will centre on the opposite side of this backplate, as there is a small countersink to allow that nut to centre when threaded on the main shaft.

Designed specifically to use the VLV front propellor collet, so you will need to get that from VLV.  The diameter is designed to fit a 90mm nose on the airplane, which was specifically setup to match the Pegase Composites model Nexus (or Hui Yang Oxygen Bipe).

I may update the file for different spinner diameters in the future.