Owner`s manual

See “PowerCenter Connections” beginning on Page 14.

Step 5:

Bolt the tail fin to the tail boom using the eight M5 bolts and washers provided, as shown in Figure 8. We

recommend applying Loctite to the bolt threads prior to assembly.

Tail Fin Fasteners

Figure 8: Tail Fin Attachment

Step 6:

Place the tail boom on the rear of the turbine powerhead 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 11. 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:

Turn the EXCEL1 powerhead so that the alternator is facing up. Attach the blades as shown in Figure 9

using the M10 hardware provided. Insert bolts and start all three blade nuts. Then, partially tighten the

nuts in the order 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 recommend checking, and adjust-

ing 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

1/2” for smooth operation. Finally, torque the nuts (in order shown in Figure 10) to 45 ft-lbs each. Loc-

tite is not necessary on the blade fasteners because the nylon locking nuts provide adequate locking.

NOTE: For EXCEL 1’s shipped after September 2003, all of the blade bolts are the same length.