Originally Posted by
FarHorizon
I've Googled this extensively and found conflicting information. The two bikes of my specific concern are an Electra cruiser (7-speed solid axle rear and solid front axle) and an Electra Townie (Modern [Shimano?] rear threaded COASTER BRAKE axle).
Most sites are in agreement that the font axles will all be 5/16" x 26 TPI, although I've seen some that said 9mm (without specifying a thread pitch).
Sites differ significantly about the rear axle threading.
Some say ⅜" x 26 TPI, others say ⅜" x 24 TPI, and some say 10mm metric (without specifying a thread pitch).
Since I don't have a thread gauge, does anyone know what this threading will be? Note that there are TWO rear axles of interest - the 7-speed and the coaster brake.
I understand that the Sturmy-Archer coaster brakes may (or may not) have a different axle than the Oriental ones. The SA models are of only academic interest to me at this time.
Thanks kindly - FH
The only hubs I've encountered with 3/8 x 24 threading are single speed coaster brake hubs. Can't remember what brand at the moment.
I have not seen 5/16" axles on any bikes built in recent times. Back in the days of 27" wheels, 5/16" fronts were common. Solid fronts will either be 3/8 x 26 or M9x1 in my experience.
According to this, Sturmey Archer has made the switch to metric for their new line of single speed coaster brake hubs.
http://www.sturmey-archer.com/files/...ER%20BRAKE.pdf
It shows axle diameter as M10. In the past, all hollow axle Sturmey gearhubs had 13/32" axles. The rotary 3 speeds were 3/8 x 26.