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"COX Budapest" .049 engine



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Post  Cox International Fri Jun 17, 2016 4:19 pm

This part is included with (Super) Chipmunk and Superstunter part sets containing and elevator, bellcrank and bellcrank wire. Where does the part go and what is it's purpose?

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Post  NEW222 Fri Jun 17, 2016 7:11 pm

Well, there is finally a question I can answer. Or at least this is the way mine came..

Need help identifying part Chip_t10
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Post  jsesere Fri Jun 17, 2016 7:50 pm

What is it suppose to do?
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Post  NEW222 Fri Jun 17, 2016 8:16 pm

Hold the elevator in neutral? I am not too sure, but am thinking one of two things:
1. To lock / hold the elevator in neutral during storage or transport, or....
2. To lock / hold the elevator in neutral for beginner pilots?
These are both hypothetical guesses, but am leaning more to my second guess, as when I was younger , a lot, my dad put a screw into the bellcrank of my Testors Fly Em' plane to hold the elevator in neutral after cracking it up a lot of times.
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Post  jsesere Fri Jun 17, 2016 8:40 pm

Number 2 sounds right. The first time I flew my PT was engine off swinging it around me with short lines just to get the feel of it.
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Post  1/2A Nut Fri Jun 17, 2016 8:54 pm

It was made to help set up the lines for even length to the handle. When your way out on the
other end its hard to see if the elevator is spot on neutral with the smaller planes.  With acro
planes getting a premium setup is important. If you have ever flown acro with one line to long
its a frustrating fight to keep in the compensation through out the entire flight.

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Post  batjac Sat Jun 18, 2016 5:26 am

My ME-109 Super Stunter manual says it is for beginners to limit the control throw so you don't over-control on the early flights.  It's 3 AM here, so I don't want to wake the wife digging around for my copy of the manual.  If I remember tomorrow, I'll dig the manual out and scan the page that talks about it.

But, I like 1/2A Nut's idea for setting up lines.  I have about three of those things, so I'll pull one out and put it in my tools collection to use for that purpose.

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Post  batjac Sat Jun 18, 2016 8:09 pm

Okay, so I dug out my Super Stunter instructions.  Here's Page 5 with the instructions for using the travel limiter:

Need help identifying part ME-109%20Super%20Stunter%20sheet_zpsoahbr2c3


I don't know that I'd use this as a travel limiter. The spring seems awfully tight for the flimsy plastic and the plastic control arm on the elevator. I'd be afraid something would snap if I did this. Maybe pre-bend the spring so that it had a little less stiffness to it. But, that's just me.

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Post  KariFS Sun Jun 19, 2016 2:37 am

I used a pair of binder clips to hold the elevator while making the hinges, might work for setting up the lines too?

The picture is of the second attempt, first I had unsuitable glue, hence the marks on the elevator. The clips worked well while stitching on the elevator on my other plane.

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Post  roddie Sun Jun 19, 2016 5:50 am

You could also use it (or make one..) to set elevator-neutral, for accurately measuring the pushrod length hole-to-hole from the bellcrank to the elevator horn if you're building a model.

Expanding on Kari's photo.. I use those binder-clips with "pads" (top/bottom) which would prevent denting soft balsa.

As Brad mentioned; this is a great method of easily and accurately setting your handle for neutral, before a flight. You don't need to look at the model for reference.

Need help identifying part Elev_n10

I use the small binder-clips with popsicle-sticks..

Need help identifying part Elev_n11

but you could also use rubber bands wrapped around two pencils.

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Last edited by roddie on Sun Jun 19, 2016 6:12 am; edited 1 time in total (Reason for editing : example using pencils/rubber bands)
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Post  NEW222 Sun Jun 19, 2016 11:55 am

I like your thinking roddie. You beat me to the punch. I do similar but use 2 pieces of balsa held with rubber bands at each end myself.
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Post  Cox International Mon Jun 20, 2016 10:33 am

DOH!

Could have simply read the Super Stunter instructions lol!

Thanks for all the replies Smile
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