09-22-2013, 02:40 PM
Hi Jack;
"Any ideas as to what may be the cause of the problem?" - strictly speaking, lack of operator knowledge.
Running the small front ring and smallest cogs at the back is strictly NOT RECOMMENDED, and is called cross-chaining. On a ten speed with double chain rings, avoid using the two smallest cogs with the small front ring, and the two largest cogs with the big front ring, and everything will work well.
The "20 speed" and similar advertising is not exactly true, in reality about 20% of the possible combinations do not work well.
"Any ideas as to what may be the cause of the problem?" - strictly speaking, lack of operator knowledge.
Running the small front ring and smallest cogs at the back is strictly NOT RECOMMENDED, and is called cross-chaining. On a ten speed with double chain rings, avoid using the two smallest cogs with the small front ring, and the two largest cogs with the big front ring, and everything will work well.
The "20 speed" and similar advertising is not exactly true, in reality about 20% of the possible combinations do not work well.
Nigel
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