AviPro Aicraft, Ltd. Bearhawk N33RB Скачать руководство пользователя страница 28

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tube. It should be at least 5.0 pounds and a little
heavier is better.

Turn the tube over and remove a little shot

to give enough room to form another epoxy/shot
plug in place and you’re finished with this process

Now, slide it in place.

Lead Wool

Yet another way of getting weight in there is

stuffing the tube full of lead wool. This looks like
steel wool, but it is lead and is available from
McMaster-Carr.

The method of installation involves nothing

more than forming plugs that look like cocktail

wienies out of the
wool,

dropping

them  in  and  com-
pacting  them  with
a  steel  rod.  Then
an  epoxy  plug  is
poured  in  the  end
the  same  as  with
the lead shot.

Lead wool “wienies” are formed really
easily and tamped down are nearly
solid.

Содержание Bearhawk N33RB

Страница 1: ......

Страница 2: ...Cut hole in bottom skins for aux tanks if applicable 20 Install aux tank straps pump and plumbing 21 Fabricate aux tank cover install nut plates 22 Run conduit for aux tank pump and nav light wiring...

Страница 3: ...m is so light don t attempt to unpack the wings in a wind because it ll pick up the big pieces of foam even as you try to get them out of the crate From this point on remember that every thing in the...

Страница 4: ...70 100 30 40 80 5 16 24 100 140 225 60 85 140 3 8 24 160 190 390 95 110 240 7 16 20 450 500 840 270 300 500 The wings don t weigh very much 150 pounds but they are not only awkward but very easily da...

Страница 5: ...to be made between the spar flange and the edge of the skin Use the front row of holes as guides to drill the stiffener and hold it in place while drilling the rear holes To visualize what you re tryi...

Страница 6: ...heavy extruded aluminum angle 1 4 thick 2 or so wide and squeeze the rivets using the angle as both a straight edge and as an interface between the squeezer the heads of the riv ets The procedure is a...

Страница 7: ...e outboard arms has to be slid in place first see photo Because both the torque tube and the bearings have been painted it s a good idea to remove the paint from both the inside of the bearings and th...

Страница 8: ...l the flap springs now which will help hold everything under tension and keep everything from moving A Note About Drilling The back side of every hole you drill is bound to have at least a certain amo...

Страница 9: ...able First get a cable cutter Aircraft cable is extremely hard and difficult to cut It can be cut with a cold chisel on an anvil but a dedicated cable cutter does a much better job and you re going to...

Страница 10: ...trol system including the pivot bolts for the bellcrank and those attaching the cables to it are drilled bolts using castellated nuts and cotter pins Routing the Cables When routing the aileron cables...

Страница 11: ...older kits if the supplied metal is flushed to the fuselage side of the root ribs it hangs into the flap bay by about 1 4 and partially covers one of the holes in the lower rear wing skin If this happ...

Страница 12: ...ht Fore and aft leveling can be accomplished by measuring the angle of the top of the front door frame Because of the hinge bushing being in the way you may have to space the level out Leveling right...

Страница 13: ...he same Summarized they are 1 Measure fuselage fittings to determine any difference left to right 2 Correct the angles to match by ovaling out the wing fittings in the right direction prior to drillin...

Страница 14: ...hole in the rear fitting Using a round file file away just enough of the offending metal to let the rod pass though To correct the actual mounting angle of the wings we re going to correct the angle...

Страница 15: ...d marking the dimension on that then measuring the marks Do the same thing for the rear spar BUT MEASURE THE HOLE ON THE FRONT FACE OF THE SPAR Now repeat exactly the same process on the other wing an...

Страница 16: ...all them lifts and use that to get the exact height needed Don t forget to pad the scaffolding to prevent scratching This is a good application for the foam that the wings were packed with Or use chea...

Страница 17: ...rd against the rear fitting and put a washer or washers in the gap Ideally the spacer will fill the gap com pletely so when the fitting is squeezed by a big pair of Vice Grips it won t be bent There s...

Страница 18: ...t Briefly what the jig does is index one piece of tubing in the front hole of the rear fitting while you are drilling in from the rear hole and through the spar It is available from AviPro at no charg...

Страница 19: ...e leveled it in last section but level it again The accuracy of your dihedral which also determines your rig ging will depend on having the fuselage level We re going to recheck it several more times...

Страница 20: ...e about 79 1 4 To make your life easier it helps if the cut you make is square so your subsequent measure ments are accurate So whatever method you use chop saw horizontal hacksaw hand hacksaw make su...

Страница 21: ...the strut but the top one has a slight angle We ll first determine the position of the bottom fitting drill and bolt it in place on the outside of the strut and then finalize the position of the top...

Страница 22: ...s and we can do the top fitting Drill Top Fitting Holes As a last minute check to make sure nothing moved put the strut back up on the airplane with the bottom fitting bolted to the outside of the str...

Страница 23: ...termine which fitting goes with which strut and what direction they were facing when they were drilled That s just good insurance Drill the Rest of the Holes Reach inside the struts with 320 grit pape...

Страница 24: ...u ll have to remove the gussets that have been temporarily pop riveted over the hing ing areas both top and bottom Don t forget to number the gussets before drilling them loose and have a corre spondi...

Страница 25: ...here s the possibility you may find a hinge mount the wing part that is angled slightly wrong and may need spacers under its feet but that s not likely If you do use wide area AN 970 washers as a shim...

Страница 26: ...at have yet to be completed but will be in due time They are Pouring lead in the aileron balance tubes Final riveting the trailing edges Balancing the Ailerons This can be done at any time after the a...

Страница 27: ...here will be less air space in it If you can find number 12 shot great MAKE SURE IT IS LEAD BECAUSE SOME PLACES SELL STEEL SHOT WHICH ISN T HEAVY ENOUGH Although some builders have made up a paste of...

Страница 28: ...of getting weight in there is stuffing the tube full of lead wool This looks like steel wool but it is lead and is available from McMaster Carr The method of installation involves nothing more than f...

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