I have a tag-along for my son that wants to join me on some rides. It's a great way for father-son bonding. He's 7yo. I've attached the collar of the tag-along to my seat post, and tightened the four bolts. However, without instructions (2nd hand tag-along), I only tightened them hard enough so I cannot move the pinion by hand that's attached to the seat post.
When I connected the tag-along itself, I had to align the holes with the pinion so that I can slide in the quick-release pressure lever and hold everything in place.
However, when we went riding and I started to turn left or right, the whole tag-along "bent" downwards throwing my son off it!
The pinion attached to my seat post was simply not tight enough, and it would turn left or right in the direction we were going, but this caused the other moving parts of the tag-along to follow it, resulting in the tag-along turning on it's side and throwing my son off!
Obviously I've made it tighter, but it may loosen over time.
Any recommendations or tips on how to properly secure a tag-along to the bike itself? I am tempted to drill a 10mm hole through my seat post and the pinion to tighten the lot, with a proper bolt.