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@sjc
@bengreen well done chap. find a really big hill and you'll hit 40plus no worries.
not sure on the accuracy of mapmyride but when i was running a silly gear on my track bike the highest it went up to was 48mph.
pretty hard on the knees stopping 49 15 though.
Sure the hill into sudbury on the dynamo sees some silly speeds at 2am, good excuse to do the dynamo ;)