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Note: If it appears that you need to grind down some areas of the gear formers and you
really cannot get the same effect by using spacers on the opposite side, there will be no
choice but actually grinding a little off the gear formers. As long this is only 1-2 mm
thickness, it will not harm the structural integrity. It might be also necessary to round a
few edges on the aluminium frame for easier insertion and better fit.
Note: If you get the gear to actually fit but either extended angle or retraction angle
doesn't seem 100% right, you can turn the ball link a few turns in or out to make fine
adjustments of its length. Once all is perfectly set, please use a little Loctite on the thread
to stabilize the ball links on the rod.
We are using light weight Dubro wheels
not only to reduce total weight, but also to
support the retraction movement against
gravity and air flow.
Note: It can be necessary to drill the main
wheel hubs with a 6.1 mm drill bit to
create the correct tolerance for the 6mm
axle.
At A: Glue the black rubber with CA glue to
the hub (we already recessed the hub for
this purpose).
At B: It is necessary to use here a pack of
washers to adjust the wheel spacing to the
strut, also how the wheel gets to lie in the
wheel well when retracted
At C: IMPORTANT: Grind a flat spot into
the axle for the grub screw!
At D: Screw the grub screw into the brake
At E: Drill a hole into the axle mount of the
main strut so that the grub screw can act
as an anti rotation pin.
IMPORTANT information to B and D: it is
mandatory to have the plane in normal
flight position to check the amount of
washers packed between brake and strut
and the correct length of the anti rotation
grub screw.
Gear Installation
Main wheels and brake installation
D
A
Glue the hub covers to the wheel rims
with some silicone (removable) and
paint the hub grey or olive green, which
will give the wheel a 100% scale look,
even though they started out as regular
DUBRO light wheels.
E
C
B
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