Hi,
I am new to this great forum and wonder whether there are members in Europe. I
ordered a www.grubberassist.com, I guess based on the knowledge of John TETZ;
rather expensive (2000 euros), but 100watt real assist, the whole system weight
is 1.9 kilo, needing a bycicle wth a special frame-tube diameter;
want to share experiences with other Gruber drivers. Any idea how to test this
at the simpliest?
kind regards,
Paul WINDEY
Begium