That Enya is absolutely one beautiful motor. Allan, you should be proud of that one.

 Allen, How about some info on how you cut, fit and built that tank.
  It look's real good...

Made a hand held bending tool from 3/4 maple square stock and 2 pieces of 1/4x20 all thread.  
Made a tank form out of pine block.  
Used K&S .008 tin , it solders real nice.  Kester solder paste and solid core plumbers solder.
Wrap paper around form to develop pattern for main body.  Make 1st bend, put it on form to mark for next bend, repeat for rest of bends.
To make end caps, stand main body on end, put 1/8 square stock against each tank side and trace around it, that gives you the solder flange.  
I also made a special small bender just for bending the flanges on end caps. 
Only hard part was the interlocking finger joint (about 3/16") on main body seam.  I have made tanks with simple overlapped seam,  but the interlocking fingers is much stronger.  It takes a some practice to get it right, have extra tin stock on hand if you decide to try it.

  Thanks Allen,
  I like the tool's that you made, never thought about the 45 degree bender, and the flange benders.
  Are you gonna make the contest?  Should be a pretty good turn out.

The tool does not really need to have the 45° jaw. 
You just need to go a little past 90 with the bends to compensate for the spring back, a 10° relief on upper jaw would probably work OK.
   
Yes I will be at the contest.

Brian,

That is a good way to make a tank floor, I will copy that into my SV-11.  But I am afraid you will need a bigger tank for your Enya 61CX, unless you are running a smaller venturi and a small prop to save fuel.

Martin

Brian,

aahhh the old "no nitro" trick. Could not imagine this engine could be so economic with no nitro, will have to try this formula  sometime.

Cheers,

Martin

I filed a groove in the muffler tube and wire wrap the rubber exhaust extension to it.  Have not had one come off yet.