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 Post subject: Is this frame trashed?
PostPosted: Wed Jan 31, 2018 2:21 am 
Old School Hero

Joined: Mon Sep 19, 2016 8:06 pm
Posts: 182
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:

[img]
http://i.imgur.com/nOIo0DR.jpg
[/img]

[img]
http://i.imgur.com/YCQPE4Q.jpg
[/img]


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 Post subject: Re:
PostPosted: Wed Jan 31, 2018 8:04 am 
Old School Grand Master
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Joined: Sun Aug 21, 2011 11:57 pm
Posts: 4196
Location: Antwerp, Belgium
Not sure why your images don't work, so I posted them again.

Image

Image

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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PostPosted: Wed Jan 31, 2018 8:33 am 
King of the Skip Monkeys
King of the Skip Monkeys

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 28833
bin it, theres serious wear from the tyre edges ago too


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PostPosted: Wed Jan 31, 2018 8:55 am 
Retro Guru
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Joined: Tue Jun 19, 2007 3:34 pm
Posts: 2146
Location: Launceston, Australia
yeah thats dead.


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PostPosted: Wed Jan 31, 2018 9:34 am 
Retro Guru
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Joined: Tue Jun 25, 2013 10:47 am
Posts: 1122
Proof, that a too small seat tube can damage the frame. It is waaay too small.


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PostPosted: Wed Jan 31, 2018 4:25 pm 
Old School Hero

Joined: Mon Sep 19, 2016 8:06 pm
Posts: 182
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.


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 Post subject: Re:
PostPosted: Sat Feb 03, 2018 11:11 pm 
Old School Hero

Joined: Wed Jan 06, 2010 12:03 am
Posts: 234
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: .


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PostPosted: Sun Feb 04, 2018 12:53 am 
GOLD | PoTM | Rider | rBOTM
GOLD | PoTM | Rider | rBOTM
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Joined: Tue Feb 26, 2013 6:26 pm
Posts: 21784
Location: 54 Festive Road Winchcombe GLOUCS Yarp...
Well if we’re being silly. Set height. Drill through post and frame. Insert bolt. Job done.


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 Post subject: Re:
PostPosted: Sun Feb 04, 2018 3:11 pm 
Old School Hero

Joined: Mon Sep 19, 2016 8:06 pm
Posts: 182
Super glue has come to my mind too :roll:


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PostPosted: Fri Feb 23, 2018 9:55 pm 
Old School Hero

Joined: Mon Sep 19, 2016 8:06 pm
Posts: 182
The dual seatpost clamps did the trick:
Image
Image


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