Bernard Burton Spirit of Pitts Montaj Kılavuzu - Sayfa 8

Oyuncak Bernard Burton Spirit of Pitts için çevrimiçi göz atın veya pdf Montaj Kılavuzu indirin. Bernard Burton Spirit of Pitts 11 sayfaları.

Sayfayı Yazdır

Upper wings:

Step 1: Prepare the top left wing:

On a flat workbench, prepare & protect your plan.

Pin the lower main spar on the plan

Glue all the wing ribs on the lower main spar (Hard wood 10x10 mm) according the

plan. W1-W2-W3-W4-W9 should be glued with 30' epoxy. Other ribs can be glued

with polyurethane glue. Pin the rear rib alignment tabs on the workbench to

guarantee a straight wing trailing edge

Proceed with the upper main spar (Hard wood 10x10 mm) as well as with the top 5x5

mm balsa spars

Glue the 10x10 mm Balsa leading edge and the balsa trailing edge

Proceed with all remaining 5x5 mm balsa spars (upper & lower)

To prevent wing torsion, glue 2 mm balsa re-enforcement between the upper and

lower main spars (vertical fiber direction)

Cover the wing with 2 mm balsa sheet according the plan

Glue the rib caps.

Note: During the previous steps, always verify and eventually adjust the

alignments before the glue cures.

Prepare the servo support assembly and glue it in place. Consider that the servo arm

is on the lower side of the wing

Install the optional wing tip if required. Use the small balsa square triangles to re-

enforce the wing tip fixation.

Prepare the aileron: pin a 2mm balsa sheet according the plan. Glue the aileron ribs

(small & long triangles). Re-enforce at the position of the control horn. Put the leading

edge spars (square & triangle) and cover the top with a 2 mm balsa sheet.

Put a wire in the wing to ease the servo wires installation at a later stage.

When the glue is fully cured, remove the wing & aileron from the workbench

Glue W9a & W9b plywood ribs on W3 & W9 with 30' epoxy. The tabs should be

placed on the lower side of the wing

Remove the rib alignment tabs. Except the W1 & W9 alignment tabs.

If your job is well done, the wing should rest on the four wing fixation tabs and stay

perfectly straight.

Continue to cover the wing with 2 mm balsa sheet according the plan but ensure that

you can still access W1-W2-W3-W4 ribs to glue the wing tubes at a later stage.

Step 2: Prepare the top right wing following the same instructions as here above.

Step 3: When the right & left upper wings are ready, proceed as follow:

On a flat workbench, align the wings and glue the right & left half wing tube sockets in

place with the aluminum tube inside. Do not glue the aluminum tube in their sockets.

Note: a dry assembly could be required to ensure a perfect alignment before gluing.

Verify and eventually adjust the alignments before the glue cures

Close the right & left wings with the remaining 2mm balsa sheeting

Remove the remaining alignment tabs.

Glue the remaining rib caps

At this stage, the wings alignment should be perfect: straight & not twisted. The eight

wing fixations tabs should rest on the workbench without any constrains.

Sand the leading edges.

Your top wing is ready.

DRAFT