davmor
Member
i was thinkin of havin my trailer made into a break away tongue for extra space in garage not so sure now good warnin though.
When I first read your post the first thought I had was that I know a bunch of people with loose tongues!:gasp But you made your point to quick for me to get too deep picking those folks out.:big grin. I do think the holes are probably wallowed out because the bolts could have been just a few thou small. The vibrations from the ball to tongue can set up action or movement where the bolt touches the tongue wall during changes in speed or direction. That movement in vibration analysis talk is measured in radial movement and the g-forces are pretty drastic given a boat/trailers weight. I've seen this on a couple of my own boat trailers.:winkJim's tongue has a lot of play. You can grab the coupler and move it up and down. My $.02 worth....i think the holes are wallowed out and allow that up and down movement. That probably puts more shock load on the bolts instead of steady clamping pressure.
I've seen this on a couple of my own boat trailers.:wink