I love my staton-inc. I highly recommened the subaru with the 1" roller. You will have to help it up steep hills but its no big deal. Great unit! They are $399.00 with shipping on ebay.
My 43cc Dimension Edge 43cc had no problem with hills. Poor mounting and wooden drive wheel was bug hassle though. And note that friction bikes go nowhere if the road is even slighty wet.Can a friction motor cope with a steep hill?
If you wanted a friction motor for short distance steepish hills, which one would you recommend?