Pietenpol-List: Wing Build Question
Posted: Tue Jan 03, 2006 9:30 pm
Original Posted By: "Dick Navratil"
I've been gawking at Hoopman Wing Plan (WP) Drawing (3/3/34), the Full Size RibPlan and the 3 Piece Wing Supplement drawing (1/10/75 revised 3/13/82) and needa little help before I build my rib jig and start cranking out garbage.Full size rib plan shows vertical braces in the ribs one behind the front sparand one ahead of the rear spar. 3/3/34 WP drawing doesn't show these. Thesevertical braces seem like they definitely should be there for strength and alignmentreasons, right?Full Size Rib Plan shows a slot for a tongue in the trailing edge. Do you haveto create your own TE stock? Didn't see it on Aircraft Spruce site, but it mightbe called something else and I'm looking in the wrong place.Original WP drawing (3/3/34) shows a 1" x 4.75" spar routed down to 1/2" in certainareas. 3 Piece Wing Supp. shows a dimension of 3/4" for thickness for sparsand the same routed areas but no dimension on the thickness in the routedarea. (Still maintain a 1/2" thickness inside routed area and remove 1/8" fromeach side?) Did Mr. Pietenpol determine that 1" was overkill? 3/4" just seemsa little light. Again, I will now take the lead for the least advanced questions posted on thelist ...if your rib jig has clamps that hold the gussets in place while the T-88sets, do you even need nails? I would think that 99.9% of the strength wouldcome from the adhesive. I plan to use a custom clamp arrangement using lightsprings to distribute the pressure without starving the joint.Thanks,Glenn Thomas________________________________________________________________________________
I've been gawking at Hoopman Wing Plan (WP) Drawing (3/3/34), the Full Size RibPlan and the 3 Piece Wing Supplement drawing (1/10/75 revised 3/13/82) and needa little help before I build my rib jig and start cranking out garbage.Full size rib plan shows vertical braces in the ribs one behind the front sparand one ahead of the rear spar. 3/3/34 WP drawing doesn't show these. Thesevertical braces seem like they definitely should be there for strength and alignmentreasons, right?Full Size Rib Plan shows a slot for a tongue in the trailing edge. Do you haveto create your own TE stock? Didn't see it on Aircraft Spruce site, but it mightbe called something else and I'm looking in the wrong place.Original WP drawing (3/3/34) shows a 1" x 4.75" spar routed down to 1/2" in certainareas. 3 Piece Wing Supp. shows a dimension of 3/4" for thickness for sparsand the same routed areas but no dimension on the thickness in the routedarea. (Still maintain a 1/2" thickness inside routed area and remove 1/8" fromeach side?) Did Mr. Pietenpol determine that 1" was overkill? 3/4" just seemsa little light. Again, I will now take the lead for the least advanced questions posted on thelist ...if your rib jig has clamps that hold the gussets in place while the T-88sets, do you even need nails? I would think that 99.9% of the strength wouldcome from the adhesive. I plan to use a custom clamp arrangement using lightsprings to distribute the pressure without starving the joint.Thanks,Glenn Thomas________________________________________________________________________________