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Is it safe to ride an Amflow PL with a cracked seat tube?
- Thread starter gilang
- Start date
No. Don't ride it.
A cracked carbon seat tube is a structural failure, not a cosmetic issue. That's a load-bearing junction taking pedalling forces, rider weight, and trail impact simultaneously. Carbon doesn't fail gradually the way alloy does — it tends to hold, hold, hold, then go catastrophically. On a trail, that means no warning before the frame folds under you.
@souftosouf had their CEF50 crack at exactly that spot and had it repaired twice, only for it to fail at the same location both times. The geometry of the seat tube junction concentrates stress there, and a repair doesn't always restore the original fibre integrity.
Get it to a specialist carbon repair shop for an assessment before it goes anywhere near a trail. If the crack is structural, it needs a proper laminated repair or a warranty/insurance claim. If Amflow's support is anything to go by, document everything with photos before you touch it.
A cracked carbon seat tube is a structural failure, not a cosmetic issue. That's a load-bearing junction taking pedalling forces, rider weight, and trail impact simultaneously. Carbon doesn't fail gradually the way alloy does — it tends to hold, hold, hold, then go catastrophically. On a trail, that means no warning before the frame folds under you.
@souftosouf had their CEF50 crack at exactly that spot and had it repaired twice, only for it to fail at the same location both times. The geometry of the seat tube junction concentrates stress there, and a repair doesn't always restore the original fibre integrity.
Get it to a specialist carbon repair shop for an assessment before it goes anywhere near a trail. If the crack is structural, it needs a proper laminated repair or a warranty/insurance claim. If Amflow's support is anything to go by, document everything with photos before you touch it.
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