simonjlewis said:
Surprising as it might sound, I didn't come on here to make things up. They did give me that advice, they are small independent bike shops, they do sell tag-a-longs, two of the shops come highly recommended by experienced cyclists and my frame is a medium.
Anyway. So you ride a tag-a-long which goes over a rack and attaches high up on the seat post? I am genuinely interested. No sarcasm intended. You have no problems? How old is your son/daughter?
Easy, I was suggesting that the bike shop staff were talking out of their bottom brackets not you. I worked in the trade for long enough to know that BS is endemic. And are they selling actual genuine Tag-A-Longs or are they using that as a generic term?
Think about it, how sh!t would a trailer have to be to not fit to a bike with a rack?
I have no kids but have had plenty of hands-on experience of Tag-A, Burley, Adams, Avenir, Pashley and Islabikes trailers among others. They all fit regular bikes down to 'small' without interfering with the rack. Although you might have trouble combining an extra small frame, hardly any post showing, 700c wheels and a tall rack with the odd trailer but they really are designed for ordinary bikes. And ordinary bikes have racks.
Seat-post mounted trailers are perfectly fine, this idea that a trailer hitch must be directly over the rear axle is patent nonsense. Look at a caravan. All it affects is the trailer turn-in when cornering. But then the height of the hitch affects turn in too wherever it's located. Trailers rarely (I've only ever seen one) pivot
at the seat-post, they usually hinge a few cm behind. You know, kind of above the rear wheel...
And anyway, a bicycle's seat-post is the part of a bicycle which is designed to carry the most weight. Much more than any frame rack eyelets I've ever seen. I would trust a loaded pannier to some Ive seen let alone a child.
The
most important thing to look out for is a total lack of any play whatsoever in the hitch pivot. A slack pivot will have your trailer passenger wobbling uncomfortably from side to side and it'll have a wholly negative effect on your ability to steer the tractor bike.
And fit a long mudguard to the back of the tractor. Even if for no other reason than the one and only time your back wheel ever passes through a dog turd.