Drilling the spinner back plate was a little tedious. My drill jig ( www.troybuiltmodels.com/Propeller.htm ) was a little tight fitting through the center hole in the Esprit spinner back plate and I didn't want to enlarge the hole. That center hole is what keeps the spinner centered on the crankshaft...the bolts just hold everything together.

The most important part of correctly drilling the back plate and prop is making sure one of the blades of the prop is at the 1 o'clock position with the piston coming up on compression. This will be the key to safely starting your gas motor without the fear of it backfiring or popping back on your hand. I don't use a glove and have never once had a problem with the prop doing anything but what I want it to. (Even my wife is comfortable hand propping it.) Starting the flipping at the 1 o'clock position and right before the compression stroke allows my hand to follow through naturally and with good force.

I used a drill press to make sure I got the holes drilled vertically square with the back plate. After lining up each hole with the drill jig and carefully drilling the hole, I placed a bolt in the hole to make double sure it stayed centered.

After drilling the back plate, I centered the prop between the splines that stick up to hold the spinner on and marked the prop. Using the drill jig I then drilled the prop from both sides.

This new line of Wild Hare R/C propellers looks promising![8D] I chose to try the new 22x8 WH prop for the break-in of my DA-50R. The root of each prop blade is slightly wider than the NX prop of the same size. The prop is a full 22" in length and weighs 4.3 ounces (122 grams). The clear coat is so shiny that I had trouble taking pictures of it...now all we need is a bunny on the blades!