Bob Morley
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  • Chile
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Carbon tubes as axial bearing ??

Started Apr 29 0 Replies

Anyone have experience using a carbon tube inside another as a simple axial bearing ?The application is a tricopter tail boom, its a 12mm tube & so must rotate freely with minimal play.I guess a…Continue

 

Bob Morley's Page

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About Me:
Brit living in Chile.
Please tell us a bit about your UAV interest
Building a 700 gram tricopter
Hometown:
Santiago

Bob Morley's Blog

Tricopter update

Posted on August 25, 2017 at 2:26pm 0 Comments

Thought it about time I posted an update.

Attached are a couple of CAD sketches for the current Tricopter, the last one almost flew but was too fragile.

Changes are :-

  • Folding front booms.
  • Enclosed…
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Tricopter tail boom linkage

Posted on June 26, 2017 at 10:41am 0 Comments

Here's a better photo showing the tail boom linkage - basically a pair of printed gears.

This design has fewer parts than a conventional linkage, less things to break so hopefully more reliable.

There's a 2:1 gearing ratio between the servo and the tail boom. The servo moves +/- 60…

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Tricopter assembly

Posted on June 25, 2017 at 12:25pm 7 Comments

Dry assembly to make sure all parts fit, so far so good.

The distance between motors is 450mm so obviously the arms need to be cut down.

A PixFalcon goes on top, the GPS/Compass module will either go directly on top of the PixFalcon or have its own mount at the front of the drone.

Target weight…

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Printing....

Posted on June 24, 2017 at 8:44am 0 Comments

Printing almost complete 13 hours later.

Not sure about the 'lurid purple' colour, for some reason it was the only filament left at the shop.

This version doesn't have a camera gimbal, I want to see what the all up weight is without any 'extras' and have some fun flying it…

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