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Align 3G FL760, and 450 class five-blade main rotor head.


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Burgess
Extreme 3D
Extreme 3D


Joined: 27 Mar 2012
Posts: 1074
Location: Wales

PostPosted: Fri May 06, 2016 8:08 pm
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Stripped down the head again removing all blade holders and shims, then fitted a pair of 4x9x4mm radial bearings on each shaft, check their heights with a pair of long servo arms and screw set at the depth to just contact the tops of the bearings.

In the first photo damage to the rim of the O ring recess.



Then adjusted the top or bottom of the damper recess as needs be using a round rotary burr file in pin vice adjusted the recesses and rechecked with my makeshift gauge.



Reset pitch link rods to identical lengths setting each to zero degrees. Spooled up and their all tracking to within a 1mm deep band, static there's 3mm differences.

The theory and practice seems to be working, will next set-up a TDI gauge and get more accurate readings.

Next modify these wooden blades to look more scale like.


Burgess
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tombo242
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Joined: 04 Nov 2008
Posts: 4718
Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Sat May 07, 2016 7:13 am
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That's one real dedicated job you're doing there Burgess. We all salute you as a prime modeller.

We can only hope that this work returns the reward that it deserves.

Tom.
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