The test mount is not my idea. There was fellow selling these on Ebay, one side takes the typical 049 reed valve engine and the other side the ubiquitious product engine. I was going to make my own using his idea but I ended up buying one of the pre made ones and it is very well made. He told me he had them done on a CNC machine. He also had a size availabe to suit the Pee Wee. Now that I have my Taig lathe set up to mill I would just make one next time.

The spinner is a Mp Jet spinner that uses a tapered split collet to fit electric motors. I made up a new tapered prop driver to fit the Cox crankshaft over which the spinner plate then fits, made a prop nut threaded through to hold the prop on a 5-40 stud in the crank and 4-40 button head screw from the front of the spinner. The spinner is 30mm in diameter. I have set up a 3 engines like this so far and haven't had any problems. The spinners are inexpensive. I get them from Icare-RC www.icrare-rc.com - about $12.00 C$. He also has 40mm size. Etienne has very competitive prices and is great to deal with. He travels from time to time and is a one man shop but he usually updates his contact information on his web site with details when he is away.


cheers, Graham