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-   -   36-12: How to adjust stick angle? (http://www.vansairforce.com/community/showthread.php?t=151805)

Stockmanreef 07-28-2017 05:00 PM

36-12: How to adjust stick angle?
 
I had no idea what to search, so I am asking:

I am on 36-12 and I have no idea how to file down the tab to adjust the downward travel of the stick to 13.6 degrees.

I finally got filed for upward travel to the desired target of 23.1 degrees--I think. When I measure the right the side I get 24.15 degrees, while on the left side I get 22.55. So on average I have about 23.1. The right side down is 11.45, while the left side down is 12.85.

I assume that what you really want is the total angle to be 36.7 to 42.6. The total angles about both about 35.5, so I have at least 1.2 degrees more of travel that I need to file on the down side. I would prefer to file that on eat up side, but I assume that that could cause problems with the stick hitting the seat when pulling fully back.

Filing the up was a PITA and so far as taken 3 sessions of filing.

How the heck do you file the downward angle?

Any tips or tricks would be really really appreciated.

thanks
ken

Stockmanreef 07-28-2017 07:46 PM

well I figured out the root cause of the issue. The plans were revised


Control Column forward travel angle 13.6 +3.0 / -0.0 was 11.4 +2-0.
Control Column aft travel angle 23.1 +3.0 / -0.0 was 20.5 +2-0.

The bearing bracket assembly was made for the original angles and not the new angles.

Maybe Vans was supposed to replace the old bearing bracket assembly with new one that more closely match the correct angle.

Because filing forward angle from 11.4 to 13.6 is **** near impossible.

Stockmanreef 08-05-2017 01:25 PM

so no one else has run into this issue.

I think that I am up to about 8 hours trying to meet the angles suggested in the plans.

Any suggestions?

other than to buy a Quick build fuselage, which is too late for me.

thanks
ken

control 08-05-2017 01:32 PM

Not there yet, but paying attention... Hope someone who has it figured out let us know :)

MED 08-05-2017 02:10 PM

I just completed these steps. As you said, filing the upper bracket was fairly easy. However, filing the lower stop was indeed a PITA. The only way I was able to do it, and get the two stops to hit together, was to use thin strips of 100 grit sand paper (~1/4"), threading them around the tube that the bracket hits with the rough side on the stop side. By holding some slight control force against the stop, it was possible to then pull the sandpaper out. This caused the sandpaper to remove a tiny bit of the stop ( I'm guessing about 2 atoms ;)). Repeat for a long time until the stops hit together. Fortunately, when I got the two stops hitting together, it was within spec. for travel. There is probably an easier way . . .

Stockmanreef 08-05-2017 03:00 PM

how is it possible that vans does not provide the correct part here? Or is this just to off set the need to not have to match drill the skins. I think that I would have preferred to match drill all the holes. After they changed the plans, a new part should have been designed and sent to everyone who already had a kit.

I am not bothering with the bottom stop. I am only going to file the top stop util I hit the called for angle between the aft and forward which is 36.7 degrees.

If I have issue with the stick aft of about 26 degrees, then I will just some how change the angle of the sticks (have it rebent).

I am thinking of using a dremel tool, if I can fit it in the area. My concern is that I will then grind too much off with the dremel and really screw things up.

I am super frustrated at this point.

Stockmanreef 08-05-2017 03:06 PM

BTW, if you complete section 35 before doing this then you might actually be throwing stuff around the shop. Access is hard enough, but if you put on the panel frame assembly or the F-01468 (panel frame brackets), then it will be a nightmare and you might want to break some thing. Or at least stop and drink a whole bunch of beer.

MED 08-05-2017 03:29 PM

By-the-way, I have a QB fuselage - setting the stops is still required. :o

Stockmanreef 08-05-2017 04:30 PM

maybe you will have gotten luck and there is a new part which has the correct angles. Or at least close.

Stockmanreef 08-05-2017 08:36 PM

mine were spot on for the original angles of 20.4 and 11.4. Hopefully I am measuring correctly. I am using a digital level and zeroing it out on the top flange.


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