chickendrumsticks
Senior Retro Guru
Woman desperately reaches for wheel:
"I'll take that, you won't be needing it now."
Frame failure experiences
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"I'll take that, you won't be needing it now."
LeeDevelopment
Old School Grand Master
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Hmmmm......folded two Foes LTS 16 frames, snapped a Spooky Project X (the swing arm tube that supported the shock mount area), cracked chainstays on early Intense M1.
Since the middle-to-late 90's I don't think I've had any issues with anything else.
Since the middle-to-late 90's I don't think I've had any issues with anything else.
This 2002 Cannondale CAAD5 came across my bench recently.
Fantastically light (1400g for a 58cm road frame), but no wonder it cracked:
Really poor dropout design. Stamped from 1/4" plate, sharp edges with a major x-section change and hardly any vertical thickness. That short section, only 60mm², has to take all the stress and strain when welded to those stiff, fat, round chainstays.
If only they'd stuck with the simpler dropout from the CAAD3 series and not been tempted to save around 3g of aluminium
For the repair, I made up a plug for the cutout, U-cut the crack, Welded up, filed to surface, and back on the road.
All the best,
Fantastically light (1400g for a 58cm road frame), but no wonder it cracked:
Really poor dropout design. Stamped from 1/4" plate, sharp edges with a major x-section change and hardly any vertical thickness. That short section, only 60mm², has to take all the stress and strain when welded to those stiff, fat, round chainstays.
If only they'd stuck with the simpler dropout from the CAAD3 series and not been tempted to save around 3g of aluminium
For the repair, I made up a plug for the cutout, U-cut the crack, Welded up, filed to surface, and back on the road.
All the best,
Last edited:
bikeworkshop
Old School Grand Master
This 2002 Cannondale CAAD5 came across my bench recently.
Fantastically light (1400g for a 58cm road frame), but no wonder it cracked:
View attachment 961061
Really poor dropout design. Stamped from 1/4" plate, sharp edges with a major x-section change and hardly any vertical thickness. That short section, only 60mm², has to take all the stress and strain when welded to those stiff, fat, round chainstays.
If only they'd stuck with the simpler dropout from the CAAD3 series and not been tempted to save around 3g of aluminium
View attachment 961075
For the repair, I made up a plug for the cutout, U-cut the crack, Welded up, filed to surface, and back on the road.
View attachment 961063View attachment 961062View attachment 961064View attachment 961065
All the best,
Above, the craftsman @danson67
Below, the farmer @bikeworkshop
Today i had a functional 95 steel trek 730, of reasonable emotional value come in,
hardened dropout broken, same as the dale.
I brazed the crack, then wrapped a bit of stay round the tube, heated and squashed it to shape, and brazed it up.
Not expecting prizes for beauty, but I'm not expecting it to break again in that spot.
Cheap and nasty, true.
But also economical and functional
Sm@alite
Senior Retro Guru
A Raleigh Maverick drop out , riding down steps .
A Lava Dome into the back of a Cortina Mk2 in a blizzard tt and dt behind the head tube .
A Basso into the back of a Nissan , same places as the Lava Dome but basically snapped in two where the Lava Dome just became very vague in the steering department .
The 77 BJ rusted through from the inside out about half way down the down tube . Quite sad about that one .
A Lava Dome into the back of a Cortina Mk2 in a blizzard tt and dt behind the head tube .
A Basso into the back of a Nissan , same places as the Lava Dome but basically snapped in two where the Lava Dome just became very vague in the steering department .
The 77 BJ rusted through from the inside out about half way down the down tube . Quite sad about that one .
Not mine. Found when surfing.
Litespeed road bike. Seem to remember a while back this integrated headtube design was not a good idea.
Odd failure in stereo; probably a manufacturing fault / abuse . Underside of chainstays where they are crimped for tyre clearance.
Litespeed road bike. Seem to remember a while back this integrated headtube design was not a good idea.
Odd failure in stereo; probably a manufacturing fault / abuse . Underside of chainstays where they are crimped for tyre clearance.
bikeworkshop
Old School Grand Master
highlandsflyer
Retro Wizard
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