Is this frame trashed?

npn

Retro Guru
this is a Diamondback frame and while it's about 15 years old I don't think it's vintage or retro but I was wondering what my options are.

The clamp must be tighten very hard in order to almost keep the seatpost from spinning left or right:

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Re:

Not sure why your images don't work, so I posted them again.

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I'd consider that trashed. You may find someone who can weld in a new patch of alu or replace the seat tube completely (which is the better option), but the big question is if it's worth the cost and effort.

There are dual seatpost clamps, where one part clamps the frame and another part clamps the seatpost itself.
Example : Ebay link
That might help with the spinning, but I wouldn't hold my breath and even if it works I still wouldn't trust it for any serious riding anymore.
 
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Thanks guys, it's not the answer I wanted but...

The seatpost is not the original - I got the frame without it but i'm thinking that's what happened - someone tried ram a smaller one it.

I may take the route with the double clamp tho not likely.
 
Re:

You could insert a correctly sized steel seatpost to the correct height. Leave in a damp place & water regularly with salt water for a few weeks. It will probably never move again. Sanding any protective finish off the seatpost which sits in the frame & cleaning any grease or oil from inside the seat tube will accelerate the bimetallic corrosion. If you tidy up the broken edges first then the seat clamp will cover the damage.

Scores 8.7 in the Bodge it & scarper world cup but will keep it rolling :facepalm: .
 
Well if we’re being silly. Set height. Drill through post and frame. Insert bolt. Job done.
 
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