Hal, I graduated from Ordnance OCS at Aberdeen Proving Ground in Sept 1967. At that time, once a week IIRC, a 16" shell was shot to high altitude to insure all ballistic data were being correctly updated. We could occasionally hear mini-guns being tested at different rates of fire out of helicopters behind the "fence". At that time, they had some very interesting shot up armored vehicles on display, maybe between gates 1&2? I was recently told that this display had been moved to Ft Meade. Then I was assigned to Ft. Sill, OK; testing and when due, changing gun tubes on 8" M110 and M107 175mm SP's. We would park an SP, lock out the suspension, depress the gun tube to 0 degrees elevation, back two 5T wreckers up to the gun tube (lifting points were marked)and hook to the lifting chains, unscrew the nut on the recoil rod, hand signal the wrecker operators to lift their end of the gun tube until I had .005" vertical clearance, and then signal the SP driver to carefully and slowly drive forward out from under the gun tube. With careful SP drivers and wrecker operators, we never bent a 5T wrecker boom on my watch. IIRC, the 175's were pretty hard on gun tubes. The ones I dealt with were toys compared to those big 16's.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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