Rib Drawing Questions

[Bcone1381]

Two questions concerning the Patrol's .032 ribs.

1) What is the 1" hole below the oblong lightening hole for?

2) Is the aileron cable clearance hole cut out now while I am making my rib blanks from my .032 sheet material? 3) What does the circle with the slash through it?. I think (the key word is THINK, meaning I lack, but desire certainty) it means a 1/2 inch diameter hole is called for in exactly this location for the
Aileron cable to fit through?

Thanks for your help.

Brooks Cone
Chelsea, MI
Plans building Patrol #303

[Chewie]

1) I believe flap torque tube.
2) Regarding aileron clearance holes, see:

http://bearhawkforums.com/forum/bearhawk-patrol-plans-build/4701-clearance-holes-for-aileron-cable

3) Diameter.

[geraldmorrissey]

Seems like drilling those holes on assembly might be worth thinking about. I'm not there yet, but being able to know exactly where the parts are going to go is a distinct advantage. But you won't know where the parts for your particular airplane go until you get to the assembly jig. A little tolerance here, a little there and your predrilled holes are now elliptical. Maybe a big pain drilling ribs in the assembly jig but the holes will be dead nuts.
Cheers
Gerry
Patrol #30 Wings

[Bcone1381]

Regarding Gerry's suggestion, what have others done? I looked up the measurements for the flap torque tube, and my feeling is it seems doable by building it to plans. My confidence is less about getting a cable that runs on an angle to properly fit through a series of holes.