Specifications

12
Step 6:
Place the tail boom on the rear of the turbine po-
werhead and insert the 12 mm (1/2”) tail pivot pin
from the top. If the parts are aligned properly the
pin should insert easily. Do not use a hammer to
pound the pin in place, as this may cause scoring
of the bronze bushings. Secure the tail pivot pin
with two flat washers and cotter pins, as shown in
Figure 9. Note: Failure to properly install and
secure both cotter pins will lead to loss of the tail
boom. Let the tail hang down so the turbine head
turns part way up for easier blade assembly.
Step 7:
Attach the blades as shown in Figure 10 using the
M10 hardware provided. Note that the alternator
will actually be hanging upside down at this point,
not turned upward as shown in Figure 10.
We recommend bolting one blade up solidly and
leaving the other two somewhat loose while you
check the tip-to-tip blade distance. We recom-
mend checking, and adjusting as necessary, the
blade tip spacing to ensure that the blade tips are
equally spaced. This step will help make the wind
turbine as smooth running as possible, which will
maximize the operating life of the bearings and
reduce vibration related noise. The blade tip-to-tip
distances should not differ by more than 12 mm
(1/2”) for smooth operation.
We recommend using a torque wrench to achieve
the proper fastener torque on the blade nuts. The
recommended toque is 54 N.m (40 ft-lbs). Loctite
is not necessary on the blade fasteners because
the nylon locking nuts provide adequate locking.
For XL.1’s shipped after September 2003 all of
the blade bolts are the same length.
Step 8:
Attach the spinner (nose cone) using the three M5
bolts and washers provided, as shown in Figure
10. We recommend applying Loctite to the bolt
threads prior to assembly.
Cotter
Pin
Cotter
Pin
Tail Pivot
Pin
Figure 9, Tail Boom Attachment
Note: Install M12 Flat Washers
between cotter pins and tail boom.
Longer bolt
goes here
Blade Nuts &
Washers
Blade Bolts
Spinner
Fasteners
Figure 10, Blade and Spinner Fasteners