Anyone flying with upgraded bellcranks in a 601xl with dual sticks? Zenith made no mention it wouldn't work.

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Upgraded bellcranks? Would you please elaborate?

Zenith issued new bellcranks some time ago to improve control harmony between elevator and ailerons, which they do with a greater mechanical advantage, but there isn't enough side to side movement in the sticks to make them work.

Thanks, Roger - I hadn't heard of that.

     Drill a new hole between existing rod end hole and the lightning hole. Helped the heavy ailerons somewhat. The new bellcrank would not have worked for me as the throw is now leg to leg. 

Quite frustrating to spend two weeks part time and 220 dollars worth parts to find out work has to be redone with original bellcranks.
Consolation I suppose would be for a builder to read this and avoid the time money and aggravation of installing upgraded bellcranks in a 601xl with dual sticks.
Thank you Jay when I get back to this job using the original cranks I will check your idea out.

The bellcrank mod was intended to help lighten up the control feel of the rather heavy ailerons. As already pointed out it does not integrate well with the dual sticks because there is not enough room between legs for the increased control throw.

A builder in Arizona added aileron spades to his dual stick XL to lighten up the ailerons and reported greatly improved control harmony. He also added a small damper/snubber to the pitch linkage to make the too light pitch control feel just a touch heavier. Between the aileron spades to lighten the roll axis and the snubber to firm up the pitch axis he ended up with very balanced flight control feel. I plan to shamelessly copy his ideas.


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