Our train bell has been working well and has been a hit around the community. I drove by it one morning and all looked fine. I drove by again that afternoon, and the rope was down. Thinking it had just come undone, I swung in to take a look. Not so.
To my surprise, the vertical arm that rocked the bell had broken off. Shocked, I looked closer to discover that the 1 1/4" rod that it pivoted on was broke. I'm still not sure what to think, but I knew it had to be fixed.
Cast iron is vulnerable and hard to work with. That could have been some of the problem. Regular steal I don't think would have broken even if someone was pulling aggressively hard. The hard part was, how to reattach it in a way that didn't cause it to falter again.
With a game plan in mind, we drilled a 1/2" hole through the rocker arm.
Then James punched a 19/64" hole into the other side of the broken shaft on the bell.
Then we tapped it 1/2" NC threads.
Dad and I were pretty unsure how cast iron would tap. Only one way to find out. Seemed to thread in good.
Our concern is that there is not much meat to keep the arm from pivoting on the pin it was originally attached to, especially when middle school kids really get to ringing it. So we opted to put some Locktite on the threads to make sure the bolt stays tight.
Let's ranch.
It tightened up pretty good.
And we set it with a good 80 ft-lbs of torque.
Then let little-man give her a tug. Seems to hold good and strong.
Back in Black.






































