Hi SuperPadIn terms of performance or general "feel", how have you found the sprocket combination of 19T rear with standard 9T motor? Or what's the "before" and "after" like? I'm considering my options...
I like the 19T rear sprocket and the higher gearing it achieves. This means when cycling on flat/downhill it means I can still be putting effort into the pedals at 20+mph without too high a cadence (when Mrs 'O' not with me of course!!!). The motor assistance also keeps going to a higher speed than 15mph. We only tend to use the motor for hills/headwinds/ and at the end of longish (35 mile) rides. Thus we tend to get between 150-200 miles from a battery charge. I've got detailed battery performance since buying the bikes and it will be interesting to see the change on distance/charge and distance/indicator light - watch this space...
On Mrs 'O' ProConnect I've now fitted a 22T rear sprocket (not a great change) since she's not much into 'lycra' or speed!!! If I go too fast she's always asking if we can slow down to enjoy the scenery! However, I have fitted an 11T motor sprocket to hers. Assistance is quite noticeably greater, and again to a higher top speed (not measured accurately yet but I reckon on 17+mph - others on here will know the theoretical change).
One other effect has been on the throttle assist speed. We fitted throttle assists to allow the bike's to 'pull' us up really steep hills when we get off to push them (nice to use a different set of muscles). As they come with the standard gearing we only got 2.5mph which just about carries the bike up a steep hill but that's all. With the changes to my rear sprocket and her motor sprocket the 'walking' speed is now higher (Mrs 'O' at 4+ mph) which gives a sense of actually pulling you up the hill - like taking a lively dog for a walk.
Overall, I like both changes in gearing that I've made, wished I'd changed to a 19T on mine a long while back. I'm not sure that a 19T and an 11T motor is necessary unless you really want to motor along.
Of course I wouldn't have got involved with all this sprocket changing etc. if the chains on both bikes hadn't worn out (at 4000 and 3600 miles respectively) along with the motor/rear sprockets. I'm now considering ways to extend chain like and/or running more than one chain (as c-elder does).
The useful thing in both having Pro Connects is the ability to compare them. Interestingly they pretty much behave just the same, when my motor bolts are loose, hers are as well, when my chain is worn, hers is as well....etc etc...etc..
Regards.
Mike
