CG Shoestring

[David M Johnson]

Well after three years of looking at the remains of my "first big plane"  I started to rebuild, here are the photos of the results and to let you know it does fly still better than the pilot.  I still need to sort out the EVO 36 engine it seems to be drawing too much air so I'll need to use a smaller venturi.
Happy Thanksgiving guys.  Thank you for all the ideas and posts.

Ok so how do I get the pictures to post?

[wwwarbird]

Looks good! Get ready though, the Evo .36 is really way more power than necessary for your Shoestring. Actually any .35 is more than enough for one that's not overweight. In your particular case with using the Evo, it seems the main problem people have had so far with those is getting them to slow and/or settle down. From what I've seen and heard so far is that they just want to scream and run away unless you really load them down with an 11" prop, this is even with taking the venturi size way way down. Be prepared...

[Larrys4227]

I'll second the 11" prop .... I'm using an 11x4 on 60' lines and getting 5.2's laptimes on a wet 2 stroke.

Have fun!  Larry

[john e. holliday]

I would say give it more air time.  Probably not broken in all the way.  The plane looks great.

[David M Johnson]

Thanks guys
This airplane started being built in Seattle and survived a move to Phoenix.  I put a Fox 35 in it that was given to me (thanks George Brown), I covered it and brought it to a sport speed contest.  George flew it to make sure it wasn't too off and told me to give it a try. I got three or four laps into the flight and the control horn pulled halfway through the wing. this caused the elevator to go full down and at full speed it hit the asphalt.  I was standing in the center of the circle with the whole club looking on..... I wanted to die.  So I took the parts home and it was three years before I could even look at the parts without emotion. But life goes on and I learned some important lessons. Its only an airplane and nothing that a little glue and balsa can't fix.  Also this has happend to most flyer's so get over it. so thanks again for the post even though I may not have replied it is a support to read them.

As for the prop I'm using a 10x4 and it is a little fast.  The lap times I haven't looked at yet but I don't think the motor is quite broken in yet either

[John Paris]

Dave,
I had a series of erratic runs with my daughter's EVO when I used a 10 inch prop.  Things got much better with an 11 inch.  One of my Canadian brothers has reported good results with the APC 10.5 x4.5.  I tried that one as well, but prefer the 11 inch.
Good Luck,
John

EDIT:  I forgot to add the part about the small venturi and pressurized system for consistent runs. 

[Andrew Borgogna]

I have had a couple of Evo .36 engines and both of them leaked air in the remote needle assembly.  I use the smallest diameter venturi and drill it through and insert a RSM NVA assembly.  No more problems.  As said before the Evo is closer in power to a .40 than a .35.  With the reworked NVA assembly they are really good engines.
Andy