Chalo thanks for your experienced info, I'd give this coaster brake set up a try if it weren't for the narrow axle. I don't think there are too many other products to choose from.
crea2k said:
This is one of my bikes, it goes up the hills like a steam train and comes down equally as fast, iv also got another bike with a bbs2 mid drive kit in it, and although it looks more stealthy it isnt as quiet as the cro, its virtually silent.
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If that's a stock cro it will not do on the mountains I ride. My main riding buddy has one and sure it does fly up steep mountains with it's huge leeway of copper mass but will overheat eventually. Usually it will do one slow long steep mountain climb but then be at its limit for the next.
The only hub I have seen do it over and over again is a custom rewound 4065 vented in a 24". The rewinding looks much too complex for me and I am not sure it would handle what I ride now either because when I rode with that guy he had to stop and wait for me in the past, which would have been cooling his motor too.
Now I run two motors and if he rode at my speed there is no way I would overheat first.
My typical ride now is 90 minutes non stop often with about 5 base to top mountains in a row with lots of shorter very steep climbs.
https://www.youtube.com/watch?v=QpkSdSWF7Jg&feature=youtu.be&list=PLzqojlpNeKR3t_VglNJXlBRmy_6rz9GuX
In the above video you see the dual motor approach. What I don't like is the weight of the bike. the 4065 vented 20" would pull up mountains with no overheating if kept at about 50kmh until the battery runs out, unfortunately the reality of off road riding is that you need to go about 20kmh and that is where the overheating occurrs.
I am tired of trying to totally new things and trusting people's advice because 99% of them don't do the same terrain. That's why ideally I would run my vented 4065 and the same 20" wheel and then give it a reduction to drop it down to my average ride speed of 20kmh.
I don't care that I would give up my top speed of 60kmh, I rarely do it and fear for my life doing it, fear for my families future too.
You've got a nice bike there though mate.