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@CelesteGreen
Ok I have been a little confused as to what this GI is all about so i looked it up.
Found this:
gi = gear inchesdwd = drive wheel diameter (for a 700 wheel its calculated to be 27')fct = number of front chainring teethrct = number of rear sprocket teethRaymond you were pulling a GI of 79.19 I think a 16t on the back should be good for you! This would get you down to a 74.25 which should be good over those hills!
You had 44t front and 15t back right!?!
Ed, an 18t would get him don to 66, he would spin out.
I have 48/17 so 76.24, I thind it a good gear, works well all round and not too tricky to stop, especially not with the help of the odd herge or a bit of off roading ;)