Patrick A
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Repairing two wings of a Pitts S2b 1993 I measured the spars and cap strips: <?:namespace prefix = o ns = "urn:schemas-microsoft-com
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For the cap strips I have mostly
1.) 7,15mm x 7,15mm, also some with 10mm x 7,15mm.
2.) For the upper front spar: 109mm x23mm, trapezoid angle 8,5°,
3.) for the lower front spar: 85mm x 18,4mm, trapezoid angle 8,5°,
4.) for the upper rear spar: 100mm x 22,5mm, trappezoid angle 6,5°,
5.) for the lower rear spar: 72mm x 20,5mm, trapezoid angle 4,5°.
Somebody can confirm the sizes that I get e.g. at aircraft spruce:
1.) 5/16 x 5/16 and 5/16 x 7/16 for the cap strips (60m for 2 wings)
For the 4 spars (length each 2,70m):
2.) 4 ½ x 15/16
3.) 3 ½ x ¾
4.) 4 x 7/8
5.) 3 x 7/8
Also I measured 2mm and 3mm and 7mm Plywood. Which plywood can I take? At ACS there are plywood like Basswood MIL- P 6070 or lite ply or domestical.
Can anyone help me with the dimensions? Which wood-dimension should I buy. Also I donât know how thick the varnish is. Thanks for answering.
Patrick
fficeffice" />For the cap strips I have mostly
1.) 7,15mm x 7,15mm, also some with 10mm x 7,15mm.
2.) For the upper front spar: 109mm x23mm, trapezoid angle 8,5°,
3.) for the lower front spar: 85mm x 18,4mm, trapezoid angle 8,5°,
4.) for the upper rear spar: 100mm x 22,5mm, trappezoid angle 6,5°,
5.) for the lower rear spar: 72mm x 20,5mm, trapezoid angle 4,5°.
Somebody can confirm the sizes that I get e.g. at aircraft spruce:
1.) 5/16 x 5/16 and 5/16 x 7/16 for the cap strips (60m for 2 wings)
For the 4 spars (length each 2,70m):
2.) 4 ½ x 15/16
3.) 3 ½ x ¾
4.) 4 x 7/8
5.) 3 x 7/8
Also I measured 2mm and 3mm and 7mm Plywood. Which plywood can I take? At ACS there are plywood like Basswood MIL- P 6070 or lite ply or domestical.
Can anyone help me with the dimensions? Which wood-dimension should I buy. Also I donât know how thick the varnish is. Thanks for answering.
Patrick
