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PostPosted: Fri Jan 07, 2011 4:53 pm 
rider | rBoTM Winner
rider | rBoTM Winner
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Joined: Fri Jan 25, 2008 1:42 pm
Posts: 5133
Location: Wakefield, Yorkshire
Hawker wrote:
I had always heard that the Vitus frames with the Grub screw were the later frames and the ones with the standard type of seatpost clamp were the earlier models? So which is it?


They should have a date 'stamp' somewhere with the build year. Mine says '86' with the clamp not grub screw (which I also thought was later).


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PostPosted: Fri Jan 07, 2011 5:04 pm 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
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Location: Moomin Valley
Oh, I was told by the original owner that these were later with the grub being earlier - I would have thought the engineering problems exposed by the grub screw was an original design with the more conventional seat clamp a solution to threaded/ seized/ sheered grubs screws


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PostPosted: Fri Jan 07, 2011 11:13 pm 
Old School Hero
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Joined: Mon Feb 22, 2010 11:25 pm
Posts: 232
Location: North London
There was a problem with the earlier vitus 997 with the conventional seat bolt,in order to stop the seat post from sliding down you had to do the bolt up very tight which inevitably caused the bolt to shear.Vitus answer to this was the grub screw,which at the time was considered really clean and aero,however 20 years plus latter ,seized and rounded out socket heads,not so clever :cry: .I suppose they should have just fitted a separate seat post clamp,like all alloy frames have now,ah well call it Gallic charm :D


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