on the WH 73" span Edge,, is the prop shaft supposed to be centered with the hole in the motor-wall (bulkhead) ??


thanks !!
Jim

I mounted mine as per the instructions. Mounted the cowl, measured the distance from the center of the face of the cowl to the center of firewall. Added 7/64" and mounted the engine to the mount with those measurements. Then removed the cowl, set the engine and mount on the firewall and remounted the cowl. Then I centered the prop shaft in the center of the opening. Carefully removed the cowl and marked the location of the engine mount and started some pilot holes. Mounted up real nice. I wouldn't worry about the hole in the firewall, just follow the instructions. The hole in the firewall may not line up with the hole in the cowl.

well I'm using a different motor, it's a Super Tartan 22cc glow motor, it has a big round mount on the back of it I wont be using,,, if I knew where the prop shaft was aligned on the motor wall I could just use the motor mount as a template and drill the motor mounting holes..


see Super Tartan motors here,,,
http://www.billsroom.com/pcfs/produc...tan/tartan.htm

Jim

James,

The Edge is looking awful good! Can't wait to get out and see how it flies. Good news, we are getting a good tax return. I think there will be enough left over after setting aside the family vacation fund for a WH! I would really like a 50 cc gas plane. Currently I am drooling over the Yak and Cap 232.

Karl

The crankshaft centers on the cowl ring, not on the hole in the firewall.

TF

I see now. That would make it a little more difficult. Are you going to use standoffs? If I remember right, my engine mount was mounted clear to the right side (looking from the front) of the firewall, so I'm guessing that the shaft will probably not line up with the hole in the firewall. If you have a drill press, mark the mounting holes on a block of wood that is about the right thickness, and just slightly bigger then the hole mounting pattern. Drill the mounting holes with the press and then put some short bolts or screws through the engine mount into the wood block to hold the engine in place. Center the engine shaft on the cowl as per the instructions, then remove the cowl and mark the location of the block. Remove the engine from the block and using the holes in the block as a template, drill the holes in the firewall. Mount your standoffs and you should be good to go. If this doesn't help then hopefully it will give you some ideas.


Karl-

It is coming together. Just need to run the antenna and finish up the pull-pull on the rudder. If the weather is nice one of these weekends, I'll be taking it out to the field for it's maiden.

jspencer

thanks Karl, I think that will work !!

Jim