AMA vs UHP Imitation

[scott ross]

Is there any differences between the AMA & UHP Imitation plans?

Thnx,
Scott

[Doug Moon]

Hello Scott,

I am not sure if there is any difference.  Steve, UHP owner, is out of town right now for work.  He should be back in a week or so and will answer question about it then.

Thanks

[SteveMoon]

Scott: there is no difference as far as wing span, nose moment, tail moment, wing root and tip,ribs, etc. The differences that exist come from the fact that I redrew the plans for how the laser would see them. The laser we used had a 12 x 24 bed (pretty common) and thus, all the parts are designed to fit in this space. Otherwise, there is no difference in the overall dimensions.

Steve

[Allen Brickhaus]

Here is my Imitation as from AMA plans.  It flew well for me.

Allen

[Bill Little]

Here is my Imitation as from AMA plans.  It flew well for me.

Allen

That's a sharp looking Imitation, Allen!

What did you power it with?

Thanks
Bill

[Allen Brickhaus]

Had an ST 46 and a rear exhaust muffled OS 40vf on it.  With the system of the firewall construction and use of R/C motor mounts, you can put almost anything on it.

Allen

[Bill Little]

Had an ST 46 and a rear exhaust muffled OS 40vf on it.  With the system of the firewall construction and use of R/C motor mounts, you can put almost anything on it.

Allen

Thanks, Allen.  I have a set of foam cores for the wings and stab/elev. that were cut back when the original article was written.

What type of "muffler" did you use on the .40VF??  And how did you "run" it?

Thanks!
Bill

[SteveMoon]

The firewall/RC mount system is great for trying different powerplants. Mine has
had an OS LA 46, a Saito 40, and is now electric powered.

Steve

[Allen Brickhaus]

Thanks, Allen.  I have a set of foam cores for the wings and stab/elev. that were cut back when the original article was written.

What type of "muffler" did you use on the .40VF??  And how did you "run" it?

Thanks!
Bill

I used a header and capped it off at the end with a wooden dowel slathered with slow drying epoxy and force fit into the end of the header.  Then I put two small screws in from the opposite sides of the wooden plug to further hold it in place.  Then I drill holes in the bottom end of the header like a tongue muffle would have.  Hope this helps.  Even included a pressure plug for uniflow pressure to the tank.

Allen

[Brett Buck]

What type of "muffler" did you use on the .40VF??  And how did you "run" it?

  Local good guy Paul Pomposo flew his Imitation with a piped 40VF for many years with great success.

  Brett

[Bill Little]

I used a header and capped it off at the end with a wooden dowel slathered with slow drying epoxy and force fit into the end of the header.  Then I put two small screws in from the opposite sides of the wooden plug to further hold it in place.  Then I drill holes in the bottom end of the header like a tongue muffle would have.  Hope this helps.  Even included a pressure plug for uniflow pressure to the tank.

Allen

Thanks for the description, Allen!  We have kept a few of our .40VFs since we had such good luck with them.  I know I could put a pipe on it like Brett shows, but the "header muffler" sounds interesting.

Bill