I will soon start to build a 60 inch Das Ugly Stik Jenson kit that once it is finished I hope to fly in a relaxed manner. After closely examining the plan I have some questions that I hope someone can advise on.

1. Neither the plan nor the instructions show how the engine is fitted to Former F1, or, the recommended distance the prop driver needs to be from the Former. Is it a case of mounting a glass reinforced type engine mount onto F1 in such a position to place the prop driver on the vertical and horizontal centre line of F1, the engine then mounted to give clearance and at a distance that “looks” O.K.

2. There is no recommended movement for the control surfaces.

3. The plan shows the centre of gravity (CG) but the instructions state that the CG can vary dependant on the finished weight of the model. Surely the CG on the plan is the datum.

4. Has anyone got a suggestion on the engine to fit to the Das Ugly Stik and what material to cover the airframe with. I would prefer to fit a 4 stroke engine.

Thanks.

1. Yes

2. I set mine to move as far as they would go.

3. Start with on the spar or a little forward of that. Adjust to your tastes. The model seems to come out generally nose heavy, so you might consider mounting the servos in the tail. I had to place the battery fairly far aft and it's still a tad nose heavy.

4. a. Cover it however you like. Monokote/Ultracote is fairly standard response, but the originals probably used silk and dope.

4. b. Virtually any engine will work - from a .40 to a .90 four stroke. Depends on how you like to fly. For a Sunday flyer though, a .46 AX powers mine just fine.

There are a few good build threads in this forum. Here's mine:
http://www.rcuniverse.com/forum/m_8424891/tm.htm

5. Also, think about the dihedral you build it with. A flat wing is good for sport aerobatic flying. Even a little dihedral will make it very resistant to a knife edge though.

[link]http://www.hobbypeople.net/gallery/210868.asp[/link]

This may help


Johnkpap