[Bruceb]

Sorry should say BROKEN


Just a heads up for you all. We were running our practice bot Friday with some super shifters that had about 2 seasons on them when we lost all push on one side of the bot. It was stuck in neutral. The pneumatic shift cylinder what going in and out but it did not change gears.
So, obviously the dog gear was stuck in the middle and the shift rod was no longer "attached" to it. Had to be that LITTLE screw that connects the dog gear to the shift rod.
After about a half hour of work we managed to pull the box off the bot and got it apart and sure enough the little screw was not where it was supposed to be. Found it stuck in the grease. Luckily not in a gear. Tried to screw it back in when we realized it was not long enough. Pulled the dog gear and sure enough there was a piece still stuck in the dog gear and another little piece in some grease under one of the gears. Now, off to Ace to find a new screw. NOT It is a 2.4MM screw that nobody had. So, we improvised. DIdn't have time to wait for AM to send one(I don't even know if they sell them). Only thing we could find close was a 4-40. A little big but only slightly. Drilled out the dog gear and the shift rod then retapped the other side of the dog gear and we were back in action.

Have any of you had this issue while pneumatically shifting these transmisions? Seems like a mighty small screw to take all that force. Do you run a lower pressure to the shifting cylinders?

Thanks