Are these rims toast? Hit a rock.
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Are these rims toast? Hit a rock.
Postby N00blet » Sat Jan 20, 2024 4:18 pm
I pinch flatted both my tubeless tyres (pinch cut through the side wall against the rim) and the front tyre came off the rim.
Obviously both the tyres are toast. I can see a very small buckle in the front rim wall and an even smaller buckle on the spoke side - is it dead too?
I've remounted new tubeless tyres and they are holding air at maximum pressure (100 PSI)
If this front wheel is toast, would you still use the back wheel if it doesn't have any weird buckles like this? It took a smaller hit given it was the trailing wheel.
#bad day
- OnTrackZeD
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Re: Are these rims toast? Hit a rock.
Postby OnTrackZeD » Sat Jan 20, 2024 5:53 pm
If it was my bike I would ride them and check them after every singe ride, if they showed any sign of worsting I would bin them.N00blet wrote: ↑Sat Jan 20, 2024 4:18 pmI was absent mindedly cruising at moderate speed (>30km/hr) and didn't see a rock.
I pinch flatted both my tubeless tyres (pinch cut through the side wall against the rim) and the front tyre came off the rim.
Obviously both the tyres are toast. I can see a very small buckle in the front rim wall and an even smaller buckle on the spoke side - is it dead too?
I've remounted new tubeless tyres and they are holding air at maximum pressure (100 PSI)
If this front wheel is toast, would you still use the back wheel if it doesn't have any weird buckles like this? It took a smaller hit given it was the trailing wheel.
#bad day
Now my advice to you is bin them and not risk it.
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Re: Are these rims toast? Hit a rock.
Postby P!N20 » Sat Jan 20, 2024 5:59 pm
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Re: Are these rims toast? Hit a rock.
Postby N00blet » Sat Jan 20, 2024 7:32 pm
I totally understand that any advice to a stranger on the internet about CF must be "bin them"
I am just gathering opinions about whether people would personally ride them to try to gauge moderate risk vs extreme risk
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Re: Are these rims toast? Hit a rock.
Postby warthog1 » Sat Jan 20, 2024 10:03 pm
Fair chance it has delaminated and cracked inside the wheel.
The consequences of a sudden failure at speed, particularly with traffic around aint worth it imo.
I am no CF expert but your life is worth more than a $1000- wheel.
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Re: Are these rims toast? Hit a rock.
Postby blizzard » Sat Jan 20, 2024 10:19 pm
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Re: Are these rims toast? Hit a rock.
Postby lone rider » Sun Jan 21, 2024 12:24 am
There is no need to run tubeless tyres at max pressure, it's actually more dangerous than low pressure.
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Re: Are these rims toast? Hit a rock.
Postby foo on patrol » Sun Jan 21, 2024 8:03 am
Foo
Goal 6000km
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Re: Are these rims toast? Hit a rock.
Postby N00blet » Sun Jan 21, 2024 10:13 am
Didn't really inspect rims regularly until this happened so I am not surelone rider wrote: ↑Sun Jan 21, 2024 12:24 amDid you notice the buckle before you fixed the tyre and inflated it?
There is no need to run tubeless tyres at max pressure, it's actually more dangerous than low pressure.
I inflated at maximum pressure so to "stress test" it to see if it would explode.
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Re: Are these rims toast? Hit a rock.
Postby familyguy » Sun Jan 21, 2024 6:03 pm
CF = toast.
It will likely have a delamination internally that will let go without warning and you'll end up on the road. Painful to think what they cost and maybe they haven't been used much, but it's the best alternative.
Don't take our word for it. Contact Raoul Luescher. He'll tell you for a price.
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Re: Are these rims toast? Hit a rock.
Postby Duck! » Sun Jan 21, 2024 6:42 pm
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Re: Are these rims toast? Hit a rock.
Postby caneye » Mon Jan 22, 2024 11:37 am
If so, shouldn't you be limiting it to 70 psi?
If not .. ignore this.
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Re: Are these rims toast? Hit a rock.
Postby N00blet » Mon Jan 22, 2024 2:04 pm
The Schwalbe pro 1 tle is one of those tyres.
In their own testing they inflate to 150% of maximum tyres pressure.
https://www.giant-bicycles.com/au/tire-test-protocol
I inflate to 100psi to just seat the beads. I ride at about 65-75 psi for 28mm front tyre. Maybe if I had more pressure I wouldn’t have pinch flatted.
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Re: Are these rims toast? Hit a rock.
Postby CmdrBiggles » Wed Mar 20, 2024 9:01 am
These rims can take up to 120psi as the upper limit, but sensibly 80-90psi for normal riding; it's 90 for me much of the time.
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Re: Are these rims toast? Hit a rock.
Postby Mububban » Wed Mar 20, 2024 11:02 am
Very glad you are okay and the front tyre didn't wrap around the wheel and catapult you over the bars
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Re: Are these rims toast? Hit a rock.
Postby deano2024 » Sat Mar 23, 2024 5:42 pm
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