HOW TO DO YOUR PROP CUT

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PETE MODEL

HOW TO DO YOUR PROP CUT

Thank you for purchasing Pete Model carbon fiber spinner. Here is some easy steps to do the prop cut.

SAFETY NOTICE:

-Leave a minimum of 1/16th inch clearance around propeller.

-Make sure the cone is properly seated in the groove.

-Check spinner and screws before each flight.

-Balance your prop properly. Unbalanced prop could cause the spinner to explode.

-Make sure the backplate sit properly on the hub and do not touch the cowling.

-Not recommended on soft mounted engines.

Step 1: Take the shape of your prop with a profile gauge. Place it close to the backplate and let it take the shape of the prop.

Step 2. : Trace the shape of the prop on a small cardboard. You have to draw the line for

the back of the prop

Step 3: Cut the cardboard along the lines you draw.

Step 4:  Place the template on the spinner and align the front cut for the prop between

two tabs.

Step 5: With a sharp edge, trace the outline of the template on the spinner.

Step 6. : Cut the outline with a Dremel tool and sanding drum. Repeat the same procedure for the other side of the spinner.

Put your prop on the backplate and check for a perfect fit. Leave a minimum of 1/16th inch clearance around the prop.

If you don't have enough clearance. the spinner might explode in the air because the prop will distortion at higher speed.

Note: Be careful when you work with carbon fiber as it can be dangerous. Wear a mask and safety glasses when you cut and sand carbon fiber. Using a vacuum cleaner is recommended.

Inspect spinner and prop before each flight for damage due to cracks, nicks, or splits. If in doubt, replace; do not use. Replacement parts are available.

Check retaining screws before each flight. If your engine vibrates a lot, use locktite. Pete Model is not responsible for the use of this product. Responsibility is limited to the replacement of the spinner only.

Separate spinner cone available for replacement or to switch from 2 to 3 blades.

Primed spinner available, ready to be painted.

THIS IS OUR VERSION OF THE INSTRUCTIONS!!! :)

HOW TO CUT A CF SPINNER FOR A PROPELLER

When cutting your spinner, special techniques must be employed. CF does cut pretty easily, especially compared to aluminum! There are two methods. One is to ask me to do it for you, the other follows. :))

WARNING: When you are cutting CF, don't get the dust on you. Especially don't breath it. Do it outside even if you have a vacuum cleaner! While it won't kill you, your skin will itch and drive you nuts! If you breath it, you will cough for the rest of your life and you will want to die! REALLY!!

1) Bolt the propeller in the proper position to the backplate. You will need a 10mm bolt about 75mm long. Rotate the prop so that the trailing edge (TE) is just a tad in front of the screw tabs. See below.

2) Mess around cutting a piece of heavy paper so that it looks right on the prop. Leave a little gap. See below.
3) Mark the position of the forward mounting screw on the paper as shown below. You will use this mark as a reference to transfer the slot to the correct position on the spinner by putting this mark onto the hole in the spinner cone. See below.

4) Transfer the slot onto the cone using a heavy black felt marker. Don't screw this up! :)) See below.
 

15) Get a rag, a dremel with the two different sized sanding drums (9/16" and 5/16"), and a fan. Go outside and set up the fan. Hold the spinner in the wind of the fan and use your large drum, grind away! Wipe the dust off the spinner with the rag every so often so that you can see what you're doing.
16) Once you've ground up to and including the line (using the small drum sander if necessary), then test fit the cone onto the backplate with the prop bolted to it. Fit and sand and shape as necessary to get an even gap all the way around.
17) Order new cone and try again.


It's actually not that hard. It should take you about 2 hours the first time and 30 minutes the second time.