Speeddemon651
MEMBER
For anyone who has done a control stick conversion from yokes, did you end up with a net weight loss or gain ?
Control Stick Conversion vs Yokes
- Thread starter Speeddemon651
- Start date
There are only a couple conversions that I’m aware of. One used the PA-20 style gear so the sticks had to go in front of the truss, necessitating several pulleys and rerouting the aileron cables. No idea of weight gain or loss, but certainly not an easy modification. Another option is to do the Trimmer SuperCub gear STC. That gets rid of the hydrosorb making it possible to add a PA-16 control system after of the truss and allows the aileron cables to run up the TE of the front strut. You likely need to change the pulleys in the wings to PA-16 pulleys and brackets and you need front struts with fairleads. Of course there is also the Trimmer “side stick” STC that just changes the wheel to a single “stick” but still uses all the original control system.
Stephen
FRIEND
Lopez Island, WA
I received a "One-time" STC to convert my PA 22/20 to sticks. This was at 25 years ago. I was extremely fortunate dealing with the FAA. I'm certain it will require much more engineering and be expensive if it were to happen again. I only know of one other person to do this and it was a long time ago.
In my mod, I made PA16 style sticks with significant changes, including shorter sticks. I did not change anything in the wing. I used the same upper pulleys in the cabin. I turned the front lower pulley pointing aft. Then added a new pulley further aft. I installed my sticks to the front side of the seat tubes. The flap mechanism was moved forward.
Anyone interested in pursuing this will need to study the PA16 control system and hire an engineer. It will require an STC. When I did mine the One-Time STC was the same process as a regular STC except having to provide a manual.
In my mod, I made PA16 style sticks with significant changes, including shorter sticks. I did not change anything in the wing. I used the same upper pulleys in the cabin. I turned the front lower pulley pointing aft. Then added a new pulley further aft. I installed my sticks to the front side of the seat tubes. The flap mechanism was moved forward.
Anyone interested in pursuing this will need to study the PA16 control system and hire an engineer. It will require an STC. When I did mine the One-Time STC was the same process as a regular STC except having to provide a manual.
I was, I was refering to the original PA-20 style gear that you had (hydrosorbs behind the truss so the PA-16 control system doesn't fit there), not the control system.
davidpatton111
MEMBER
I just got the STC and documents from Eddie Trimmer for the yokes. Are you building them yourself or outsourcing? I need HELP. lol. I'm not an A/P nor do I have the tools or expertise to build these. Thanks.
davidpatton111
MEMBER
Yes, I mentioned to an A/P on the field I'm at that primarily does fabric. I have not had a chance to present him with the plans, etc. I am just putting feelers out for someone who may have already fabricated this yoke. Additionally, I'd think an A/P could sign off on the fabrication work and then an A/P at my field could then sign off on the installation. Basically looking for someone familiar with the yoke, etc.
You need an IA to sign off on the 337 for the installation of the STC.
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