Sturmey Archer Dual Drive
Posted: 10 Aug 2019, 8:05am
This is probably a question for Brucey (again!).
I have an SRAM 3x7 dual drive on my BikeE which works beautifully and I'd like to build a similar system as a little bike project.
I have an old Hercules 3-speed hub with a screw-on sprocket. The screw thread accepts a 5/6/7 speed block but this is of little use because the axle is then too short to mount the wheel.
Are long SA axles obtainable and or would they be so long as to be vulnerable to bending? Or could I take an angle grinder to a 5/6/7 speed block and make a 3x2 or 3x3 system to reduce the required axle length?
I suspect someone (probably Brucey) has tried this; can anyone advise if this winter retirement project is doomed to failure?
Cheers
Stradageek
I have an SRAM 3x7 dual drive on my BikeE which works beautifully and I'd like to build a similar system as a little bike project.
I have an old Hercules 3-speed hub with a screw-on sprocket. The screw thread accepts a 5/6/7 speed block but this is of little use because the axle is then too short to mount the wheel.
Are long SA axles obtainable and or would they be so long as to be vulnerable to bending? Or could I take an angle grinder to a 5/6/7 speed block and make a 3x2 or 3x3 system to reduce the required axle length?
I suspect someone (probably Brucey) has tried this; can anyone advise if this winter retirement project is doomed to failure?
Cheers
Stradageek