By the way, Tom, what's the latest on your new motor?
I am doing a lot less cycling in winter (as only cycling week-ends, for leisure), and the motor was replaced at the end of last year.
I have done about 550 miles with the new one, and I haven't had issues. I guess it will be more interesting to assess once I have done 1,500 or 2,000 miles with the new one, but this will probably be well after the summer.
The bike now has about 1,600 miles, and is performing very well. No mechanical issues, and the chain is still the original one (and does not seem to be at more than 0.5% wear yet, which is surprising).
Another surprising fact is that the Marathon tires never seem to deflate either.
I can achieve probably 90 - 100 miles with the 17Ah battery (cycling 95% of the time with the lowest assistance and good pedaling). I did 35 miles on my last trip, and only one third of the battery was used.
It's good to see that Derby Cycle/50 Cycles are now acknowledging there is indeed an issue with the Impulse 2 motor, they have a pro-active solution/fix for it, and they will deal with damaged motors, even post-warranty (will have no other choices now anyway). I guess the aim of this post has been well achieved.