I have a Singular Peregrine frame, which is lovely and I love. But it has this cutely pointed lug at the top of the seat tube in the front and an integrated seat clamp.
The result is that the top of what is effectively the seat clamp is not flat.
I also have a Trek Mountain Train trailer bike, the hitch for which is designed to rest on the top of the seat clamp, with a plastic shim/bearing to allow the hitch to pivot around the seat post when turning, etc.
I could grind off the point of the lug to create a level surface for the hitch, but that seems a shame. So here's my idea, which I present for evaluation of its stupidity:
I propose to take an extra plastic Trek shim and 1.) cut a recess in it for the lug; and
2.) cut it down to the height of a seat post clamp such as this one;
3.) clamp that shim to the seat post with said clamp; and finally
4.) install the Trek hitch, including a second shim of appropriate size, above that on the seat post.
In this way, the hitch will rest on the second seat post, which will act as a collar around the lug, protecting it, and the hitch itself will pivot around on its own shim as nature and Trek intended, without the lug interfering.
So, what's the verdict? Brilliant, or idiotic?
Thanks in advance...