Some people shouldn't be allowed to lay their ham fisted hands on bikes.
If it were mine, I'd remove the other half of the broken seat clamp very sympathetically, then see what was left in relation to the seat tube
I'd then look at filing the top of the seat post as flat as possible without going any further than necessary. This should leave you enough meat to fit a standard seat post collar, and the added bonus of covering the holes created by the incredible bodge.
You could go a step further and have the holes plugged by weld, silver solder, JB weld or even some rubber plugs (if they'd fit under the collar) to prevent any further frane damage/stress.
I love the rifling on the tubes. I'm sure you know this isn't a merlin of ti fame, but the northern UK brand. I had an alloy frame (malt 1 iirc) which was really good to be fair, obviously yours is tange steel with the rifling detail. I think other brands like ballistic may have produced similar, or may even be the same just branded differently.
Forks are cool, maybe salvageable with a strip down, clean and reassembly. I've not worked on that type of fork so can't say what's inside.
Good luck, a nice frame imo. Worth trying to save.
If it were mine, I'd remove the other half of the broken seat clamp very sympathetically, then see what was left in relation to the seat tube
I'd then look at filing the top of the seat post as flat as possible without going any further than necessary. This should leave you enough meat to fit a standard seat post collar, and the added bonus of covering the holes created by the incredible bodge.
You could go a step further and have the holes plugged by weld, silver solder, JB weld or even some rubber plugs (if they'd fit under the collar) to prevent any further frane damage/stress.
I love the rifling on the tubes. I'm sure you know this isn't a merlin of ti fame, but the northern UK brand. I had an alloy frame (malt 1 iirc) which was really good to be fair, obviously yours is tange steel with the rifling detail. I think other brands like ballistic may have produced similar, or may even be the same just branded differently.
Forks are cool, maybe salvageable with a strip down, clean and reassembly. I've not worked on that type of fork so can't say what's inside.
Good luck, a nice frame imo. Worth trying to save.