ORIGINAL: Silversurfer
Manual Choke Linkage--3mm-53
Here's what I came up with for a manual choke using around the shop materials:
One servo arm, any type will do, even round. A couple of threaded rods, one small ball link to avoid binding, two flat washers, one brass servo eyelet to fit the center of the servo arm after opening up the hole for the servo screw a little, a couple of 4-40 clevises, a 4-40 screw, and a 4-40 nylock nut. All you're doing is making a bellcrank to change the direction of the linkage 90 degrees. Works great.
and then he said
Mine came out needing about 1-1/2 oz in the nose to hit mid-back of the tube.
So if you had used a choke servo, you'd have a backup kill device, the servo weight would have displaced the ballast so there is no weight penalty, and you would not ever need to get down on the ground to work the choke. I'd bet that everyone has an old servo laying around that's not any good for any other use, so the cost is zero as well.
I'm just doing this to tweak Pat a little, but for all you others a servo on the choke makes a lot of sense and is no harder to install than a manual linkage. This is why the TOC-53 comes with a nice arm on the choke.
TF