As Kits go dax offers more hardware options, but Staton's FD,(I believe),
is more precisely machined. I've spent the last 4 years trying to create a drive
roller the worked well in wet conditions. I've made several that worked pretty
well , but the best so far was a simple fix. I burned some #36 grit emery paper,
and panned off the ash 'til all that was left was black corundum sand. This stuff
is next in hardness after diamond. After roughing & cleaning my Staton roller,
I mixed the grit into JB weld,& painted it onto the roller to a uniform round surface.
This grips like crazy, but if you open throttle too quickly it will eat your tire like
a chainsaw in balsa. Always pedal off to 7 or 8 mph & open the throttle gently.
This is always a good idea anyway as it will prolong the life of your clutch.
If done right with a proper tire it should last nearly as long as it would just
pedaling.
What I like most about friction drive is having the option to simply lift off the roller
& pedal or coast when I feel like just ambling slowly along taking in the sights &
sounds.
For me the best bike for this kit an old school steel Mtn bike. Front suspensions okay,
full suspension sucks. The Mtn bike gives one the low range needed should one
have to pedal. A steel,(chromo), frame will hold up better than alu, and a lugged
frame is better still.
The picture is of my chromo Giant Mtn bike with a Tanaka PF4210
with both FD & optional belt drive. both can be used off the Staton kit.
It's my 'bugout' bike. 25 mph, 40 with he belt.