A 3D-STP file was emailed to Wanfon Rapid Prototyping in China and in 5 days the grip arrived - total cost $US135 including freight. The attachment insert was machined from 2024-T3 aluminium bar and drilled 7mm through to allow the wiring of the switch's.
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| Pistol Grip 3D Render |
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| The final product in ABS plastic |
The next question was what control's to incorporate and throttle / rpm were the logical combination as propeller rpm can be linked into a FlyBox PC-1 controller using the two push buttons.
Originally I was looking at a different controller so why the change - simple the desire to use a 4 blade propeller to help capture that Shorts Tucano look. The supplier uses the Flybox as dose the factory aircraft and both give it a thumbs up for its operation.
The next item on the list was a suitable throttle quadrant and the Model CT-82F for a RV was selected. The mixture control knob will be painted yellow and will be used for choke on the Rotax engine. At 40 mm wide fits well within the available envelope and is a well made unit with friction brake - quite smooth.
A four [4] core cable will connect the BC Specialty Products push buttons which are a press fit into their respective hole's with a washer preventing them being driven while in use.
Cables
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| Very smooth operation. |
The throttle is complicated by the need to operate the two carburetors of a Rotax 912. A dual cable throttle cable was sourced with a knob, this will be removed and a suitable connection fabricated to suit.
Assembly will be covered in Part 2
Note:
The step file for the handle is available to other builders - contact through the Australian Dealer Web Site - http://www.flyinglegend.com.au
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