Marty57
PATRON
Nipomo, Ca
I have finished building my wood aileron and wood flap; now it's time to figure out the linkage for the flaps. Here is where my confusion comes in.
First, I went to Christian's site (Thanks again) to look at the wing drawings; #14394 Panel Assembly Wing to get a look at parts and set up. Looking at Figure 22 of that drawing blown up, the drawing shows this detail:
Ok so far. In the above drawing, it gives part #40092 for the Flap Bell Crank. Bringing up that drawing I get this:
Well, correct part number but it is labeled " Aileron Bell Crank" and is a different shape. So, off to Univair I go to see what they have. With the same part number, I get this:
and it confirms the info in Figure 22 but is different from the 40092 drawing.
Now for the question; What parts are correct? I am thinking that the "boomerang" shaped bell crank is correct but what is the "T" shaped bellcrank labeled "Aileron Bell Crank" and why the same part/drawing number but a very different part? Looking back at the full wing panel drawing I can't even find an aileron bell crank, what am I missing here?
Although my 2+2 wing is wood, all the dimensions match the metal PA18 wing so the flap linkage will be the same ...... I just need to figure out what to go by. Next will be the cables for the ailerons so I guess I need to know if I am missing something regarding the "aileron bell crank" and is that something I need?
I know you guys can get me on track here. I need to get this right so I can draw it all up for Tim to use on his 2+2 ........ and I guess I can use the info also. :help
Thanks,
Marty57
First, I went to Christian's site (Thanks again) to look at the wing drawings; #14394 Panel Assembly Wing to get a look at parts and set up. Looking at Figure 22 of that drawing blown up, the drawing shows this detail:
Ok so far. In the above drawing, it gives part #40092 for the Flap Bell Crank. Bringing up that drawing I get this:
Well, correct part number but it is labeled " Aileron Bell Crank" and is a different shape. So, off to Univair I go to see what they have. With the same part number, I get this:
and it confirms the info in Figure 22 but is different from the 40092 drawing.
Now for the question; What parts are correct? I am thinking that the "boomerang" shaped bell crank is correct but what is the "T" shaped bellcrank labeled "Aileron Bell Crank" and why the same part/drawing number but a very different part? Looking back at the full wing panel drawing I can't even find an aileron bell crank, what am I missing here?
Although my 2+2 wing is wood, all the dimensions match the metal PA18 wing so the flap linkage will be the same ...... I just need to figure out what to go by. Next will be the cables for the ailerons so I guess I need to know if I am missing something regarding the "aileron bell crank" and is that something I need?
I know you guys can get me on track here. I need to get this right so I can draw it all up for Tim to use on his 2+2 ........ and I guess I can use the info also. :help
Thanks,
Marty57