I have a 2009 Koga Signature high-end touring bicycle (internal hub gear, hub generator, half-open chainguard, ...). I'm cycling around 100 km/week (8½ km one-way commute) plus trips, so I've probably done over 10.000 km (bicycle+odometer is currently at the local workshop, so I can't check the exact number right now). I live in a sub-Arctic climate with 5–6 months per year of temperatures below 0°C, typical mid-winter temperatures of -20°C with extremes down to -40°C, and snow lasting from October to May. I cycle year-round and have so far surrendered to bad weather only once (on my previous bicycle, in 2008). I live in Kiruna, Sápmi, Sweden.
Since yesterday, I have noticed that the crankset moves sideways and the bottom bracket is almost entirely loose. The problem may have existed before, but it should have been significantly less severe or I would have noticed earlier. Although cycling is still possible, I didn't do so out of fear of damaging the bottom bracket shell. This morning, I brought my bicycle to the local service place, and the handyman at the workshop immediately said that it needs replacing, and ordering from The Netherlands (where I indeed bought the bicycle; as a footnote, I am positively surprised that this was the immediate reaction, as responses when I asked advice earlier were along the lines of "I have never seen such a thing before" in response to some part of my bicycle — not many people around here go regularly by bicycle, and I really do hope the people working at the local workshop know what they're doing). Ordering the part will take time, at least a week, probably longer. A long time to be bikeless :(.
- Does the bottom bracket moving sideways indeed mean it needs replacing?
- Is it normal that this happens already after 2½ years, under the aforementioned conditions, on a Koga (not the cheapest kind of bicycle)? If not, might I still have guarantee? Unfortunately, it is not practical to return to the store where I bought the bicycle, as this is approximately 2665 km away.
- Is it indeed potentially detrimental to continue riding, or is this fine? If it is fine, I could do so until the new bottom bracket arrives.
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