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Old 13-Aug-2006, 04:18 PM
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mono subframes ? made of cheese

ok i know these are made of ally, and are not meant for the weight of a pillion.
as you might have read i went touring in scotland, i got a pillion seat unit and just bodged it onto the mono subframe just to carry soft panniers.
i had about 10-15kgs in the panniers and got a bit of airbourne action in scotland.
cleaning the bike today the subframe has completly snapped both sides towards the rear :| and looking at the thickness of the metal it looks like its not meant to carry any weight at all.

anyone know where i can pick up another Mono subframe ?
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Old 13-Aug-2006, 04:22 PM
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I remember when Bike magazine first road-tested the 999 monoposto. They snapped the frame too, without the luggage. If I needed any further persuasion to get a Bip, there it was!
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Old 13-Aug-2006, 05:23 PM
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Quote:
Originally Posted by Wave

anyone know where i can pick up another Mono subframe ?

Cheaper to have it braced and repaired.
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Old 13-Aug-2006, 05:56 PM
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could you point me in the right direction ?
i could take some pictures of the damage if that would help
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Old 13-Aug-2006, 06:06 PM
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Quote:
Originally Posted by Wave
could you point me in the right direction ?
i could take some pictures of the damage if that would help

Where in the world are you ? KNow a few good places in the Derby area, Spondon Engineering are good guys for ally work.
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Old 13-Aug-2006, 06:25 PM
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Bromley, south London
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Old 13-Aug-2006, 07:15 PM
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I think it was colin chapman who spoke about car parts saying if they didnt last a race, they were too weak, and if they lasted longer they were too heavy/strong.

its a mono seat frame, designed as such.........extra weight over the rear of the frame (inc the leverage effect from the mounting points) it wasnt designed for!
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Old 13-Aug-2006, 07:26 PM
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Surely the subframe should still take the weight of a pannier bag, I mean I am less than 11st but I know others that are up to 16st so this is a vast difference in weight.
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Old 13-Aug-2006, 07:49 PM
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i thought that, but looking at the thickness of the metal, i wouldnt even trust it to hold its own weight. let alone the exhaust and 10kg panniers, granted getting the bike airbourne isnt a good idea, but please its less than a mm thick.
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Old 13-Aug-2006, 08:01 PM
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heres a pic
its the same the other side too

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