Control assembly mounting

[spinningwrench]

I have a full exploded view assembly drawing of the assembly I can send you with all parts called out. My .pdf drawings don't post very well to this web site as you will want a much larger view. Send me a private message or directly at spinningwrench@me.com.

[Pbruce]

Good point about the inspection, Brooks. PM sent, Mr Wrench. Thanks all.

[paulodonnell]

I came across this today when assembling the control stick and pushrods....(just at the end of my first week or so building a QB Patrol SP, so early days!)... I wasn't happy that the spherical bearing was hitting the bellcrank and needed the bearing to move in the nut threads so I machined two 2.5mm spacers and opened up the fork a little. Yet even after doing that, it still only allows the rear joystick to move side to side within about 1" either side of the front seat frame as a reference point. The drawings aren't much help either, not very clear, and I'd interpret them as needing the screw threads to move in the absence of a lock nut. Perhaps it will be within movement limits when I eventually get it all rigged up, but its the first thing I haven't liked, these are some of the little bits that could kill you no matter how good you are if they let go. I might get little more throw if I chamfer those spacers a little.

Any Patrol pilots know the rough side to side travel of the joystick needed?

IMG_3920.jpg

[arborite]

I did the stack up on the LSA and came up with about 13.5 degrees each side of center. My supplied bearing had a shoulder limiting travel to 10 degrees each side, so I found a high angle bearing (+/- 22 degrees) and replaced it. works fine now. washers did not work on mine since the bearing itself had shoulders limiting travel.

[David Swartzendruber]

I had the exact same concern so I took a digital inclinometer to Oshkosh with me last year and measured the stick travel on Mark's Patrol that was displayed in the booth. I don't remember what the angle of movement was, but it was just inside of what the rod bearing on my LSA was giving me. I'm hopeful that the LSA doesn't require any more stick movement than Mark's Patrol did, but won't know for sure until I have everything rigged up. I also had to put some spacers on each side of the rod bearing in order to utilize it's full amount of motion/misalignment.

[arborite]

I used the math method. aileron max angular travel is published, and the various bellcranks and levers are on the drawings. pretty easy to calculate. the rod end angular data is available on the web, and i verified my joint was to spec. it was spot on +/- 10 degrees. I don’t have Patrol data, though. your heim joint is bigger than the LSA. Google the part number and you’ll find it.

[David Swartzendruber]

I don’t have Patrol data, though. your heim joint is bigger than the LSA. Google the part number and you’ll find it.

I'm wondering how you determined that the Patrol heim joint is bigger than the LSA. Was that based on looking at the picture posted above by paulodonnell?

[arborite]

I'm wondering how you determined that the Patrol heim joint is bigger than the LSA. Was that based on looking at the picture posted above by paulodonnell?

Mark sent me the Patrol joint by mistake. It was a bigger thread and wouldn’t fit the LSA, so he switched it with me.