HelicopterJohn Key Veteran Location: Seffner, Florida (Just East of Tampa, Florida)
| Tapered ball linksz11355
I am sure you can measure the links in that manner if all the ball links are of the same manufacturer and type.
What I have found is that the TT ball links have a tapered end and you have to be really careful to get an accurate measurement. Also, without the vario tool you have to make sure the caliper tips are aligned properly or you will get an inaccurate measurement. Furthermore, you have to hold the rod while making sure the dial caliper doesn't move while taking the measurement. With the vario tool all you have to do is put the links on the rods to get an accurate measurement. I believe the vario tool is only about $10 bucks and well worth the money.
I believe that1 turn on the links can mean about 1 degree of pitch in the rotor system. It would seem that the "inner hole where the balls ride in the ball link" of measurement system would be more consistent and accurate.

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