mono subframes ? made of cheese

Wave · 13-Aug-2006, 16:18

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 ?

Loz · 13-Aug-2006, 16:22

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!

Carbon749 · 13-Aug-2006, 17:23

Quote:

Originally Posted by Wave

anyone know where i can pick up another Mono subframe ?

Cheaper to have it braced and repaired.

Wave · 13-Aug-2006, 17:56

could you point me in the right direction ?
i could take some pictures of the damage if that would help

Carbon749 · 13-Aug-2006, 18:06

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.

Wave · 13-Aug-2006, 18:25

Bromley, south London

andyb · 13-Aug-2006, 19:15

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!

iang · 13-Aug-2006, 19:26

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.

Wave · 13-Aug-2006, 19:49

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.

Wave · 13-Aug-2006, 20:01

heres a pic
its the same the other side too

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13-Aug-2006, 16:22	#2
Loz Registered Forum User Big Twin Posts: 1,973 Join Date: Apr 2004 Location: West Sussex Mood: Train comes and I know its destination 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! Reply

13-Aug-2006, 17:56	#4
Wave Registered Forum User Mille Posts: 146 Join Date: Apr 2006 Location: Bromley UK could you point me in the right direction ? i could take some pictures of the damage if that would help Reply

13-Aug-2006, 18:25	#6
Wave Registered Forum User Mille Posts: 146 Join Date: Apr 2006 Location: Bromley UK Bromley, south London Reply

13-Aug-2006, 19:26	#8
iang Registered Forum User Big Twin Posts: 1,170 Join Date: Jan 2003 Location: northumberland 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. Reply

13-Aug-2006, 19:49	#9
Wave Registered Forum User Mille Posts: 146 Join Date: Apr 2006 Location: Bromley UK 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. Reply

13-Aug-2006, 20:01	#10
Wave Registered Forum User Mille Posts: 146 Join Date: Apr 2006 Location: Bromley UK heres a pic its the same the other side too Reply