Maybe I should be more specific. Not easy to point out what exactly caused the problems, because there were too many variables / different circumstances compared with earlier experiences.
Fact was that all 3 of us had massive grip problems and we all used older tyres.
I can only speak for myself. I rode with Vittoria Corsa CX, Vittoria Cronometro CS, Clement Criterium Seta. Some tyres had better tread, other were pretty worn. The newer tyres with best tread had the best grip, although not great, not possible to stay on the track at 30 kmph.
As already pointed out, used white vinegar to clean the tyres.
Never experiences such problems at my home track in Apeldoorn. But here the banks are les steep and the temperature is always pretty (too) high.
Sunday in Büttgen, the track was a lot older, maybe ore slippery surface, but (maybe important to point out) no heating. Temperature was around 3 - 5 °C.
Still a lot of riders on the track without any grip problems, riding around with moderate speed, chatting with the hands on the drops, etc.
Somehow I think that the combination of the old tubs with the low temperatures were the cause of our problems.
Maybe I should be more specific. Not easy to point out what exactly caused the problems, because there were too many variables / different circumstances compared with earlier experiences.
Fact was that all 3 of us had massive grip problems and we all used older tyres.
I can only speak for myself. I rode with Vittoria Corsa CX, Vittoria Cronometro CS, Clement Criterium Seta. Some tyres had better tread, other were pretty worn. The newer tyres with best tread had the best grip, although not great, not possible to stay on the track at 30 kmph.
As already pointed out, used white vinegar to clean the tyres.
Never experiences such problems at my home track in Apeldoorn. But here the banks are les steep and the temperature is always pretty (too) high.
Sunday in Büttgen, the track was a lot older, maybe ore slippery surface, but (maybe important to point out) no heating. Temperature was around 3 - 5 °C.
Still a lot of riders on the track without any grip problems, riding around with moderate speed, chatting with the hands on the drops, etc.
Somehow I think that the combination of the old tubs with the low temperatures were the cause of our problems.