Evolution Engines 62GXI - Manual (Page 8)

8
Attaching the Propeller and Spinner
Refer to the Propeller Drilling section for
instructions on how to properly drill a
propeller.
1. Remove the 4 propeller screws from the prop
driver.
2. Insert the 4 screws through the front prop
washer, followed by the propeller, spinner
backplate, rear prop washer and finally
thread them into the prop driver.
3. Begin to tighten all 4 screws until they are all
hand-tight.
4. Tighten all screws with the included 4mm
L-wrench in a clockwise circle until all screws
are tight.
5. Install the spinner cone. Make sure the
spinner cone is not touching the propeller.
Trim the propeller opening if necessary.
6. Tighten the spinner screw to secure the
spinner cone.
Recommended propellers
22 x 10–24 x 10 (a Falcon 23 x 9 has tested
to be the best performer with this engine,
although the performance is very good
throughout the recommended range).
Propeller Drilling
Use a manufacturer’s drill guide to drill four holes in the propeller. The guide ensures that the
propeller bolts align with the driver and do not cross-thread. If you do not have a drill guide, use
one of the propeller washers from the engine; however, this method is not recommended and may
result in poor fitment and damage to the propeller washer. If using a propeller washer, follow the
same instructions as below. Using a drill press is also highly recommended, but not required.
1. If your propeller has a 10mm (0.39 in) center
hole, move to Step 2. If not, use a propeller
reamer to widen the center hole to 10mm.
2. Place the drill guide into the propeller center
hole.
3. Align the bolt pattern where it is convenient
when mounted on the engine. See below
for the best alignment. This will orient
the propeller so that it is in a comfortable
position to hand-start when up against
compression. It is best to check this on your
engine first.
60°
45°
4. While using a secure method to hold the
propeller and drill guide (we recommend
a vise), drill the first hole (order does not
matter). Drill carefully and take your time.
The more precisely you drill the propeller,
the better the fitment of the bolts. If drilling a
carbon fiber propeller, pull the bit out every
few seconds to clear the hole of any material
and allow the bit to cool. Drilling through
carbon fiber is tough on drill bits and takes
longer to complete than wood or plastic.
5. Before drilling any more holes, take a propeller
bolt and place it in the newly created hole. This
will help keep the drill guide aligned and keep
it from rotating when drilling the other holes.
6. Drill the rest of the holes.
7. Remove the drill guide.
8. If desired, take a chamfering tool and
carefully cut a chamfer in each hole on each
side of the propeller.