Useful Stuff, Tips and Tricks
Precision Propeller instructions
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Assembly and pitch adjustment instructions for the Precision Propellers 3-blade, ground-adjustable laminated wood propeller (formerly made in Vernal, Utah, USA).
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Download "Precision Props instruction sheet"
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3-blade wooden Precision Propeller
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Wing-pin Removal Tools
To avoid damaging the Shadow wing-pins, why not use a special tool to remove them. Simple to make.
PS: The hollow wing-pin is a 265mm long 5/8″ diameter aluminium tube, with 5/8″ steel ends pressed into it. The steel lower end is threaded (3/8″ x 16 UNC) to fit ‘slide’ tool.
PS: The hollow wing-pin is a 265mm long 5/8″ diameter aluminium tube, with 5/8″ steel ends pressed into it. The steel lower end is threaded (3/8″ x 16 UNC) to fit ‘slide’ tool.
Never bash the wing-pins out with a hammer!
Push tools - push from below
To remove the wing-pin:
- Adjust the height of the wingtip support, so that the wing-pins are not taking any load
- Insert the tool into the lower end of the wing-pin
- Push up on the handle with your hand
Slide tools - pull from above
To remove a stubborn wing-pin, slip the ‘slide’ tool right down inside the hollow tube and attach it to the lower end. Repeatedly slide the weight upwards – each ‘impulse’ helps draw the wing-pin out. It's kinder to the wing-pin, than hitting it out from below!
Threaded wing-pin 'slide' tool (Murray Hagen, NZ)
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My B-D Shadow came with a wing-pin removal tool. It is a 3/8″ steel rod (440mm long), with a threaded end (3/8″ x 16 UNC).
The ‘slide’ tool screws into the wing-pin's threaded lower end. Warning!
This tool weighs 840g - don't drop it on your toe. |
Steel rod wing-pin 'slide' tool (Philippe Soulas, FR)
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Philippe Soulas made his own slide tool out of 6mm rod.
The sliding weight is 30mm diameter and 90mm long. The long rod goes right thru the hollow wing-pin and a nut/washer is screwed onto its far end. |
Bruce's other aviation websites
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Fly Micro - microlight aircraft build, restore, upgrade + repair
