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[quote user="doctorwayne"] Like some cracked gears, a cracked universal may be repairable. This Proto USRA 0-8-0 developed a cracked gear quite some time ago... <img style="width:704px;height:auto;display:inline;" src="https://i23.photobucket.com/albums/b399/doctorwayne/locos%20switching%20industries/TrainBrain135-1.jpg" alt=" " border="0" /> ...but upon disassembling it, I was pleasantly surprised to find that it had a fairly substantial hub on one side of the gear. I selected a piece of brass tubing with an outside diameter larger than that of the hub.  The inside diameter, however, was smaller than the hub.  After measuring the hub's diameter, I used various drills (fractional, numbered, and letter-types) in a pin vise to gradually enlarge the inside of the tubing.  When it was very close to the size needed, I manually compressed the gear to close the crack, then pressed the re-sized tubing onto the hub, using a small vise.  The re-assembled loco runs as it did before the crack developed, and has been troublefree since then. In a similar manner, it may be possible to rescue that cracked universal. Wayne <div style="clear:both;"> </div> [/quote] Thanks Wayne, I kept the parts, will attempt this repair when the time comes. Andrew
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