Just found exactly what I was looking for while searching for twist grips - electric thumb throttles. Thanks Richard and Matt. On Tue, Oct 29, 2013 at 5:22 PM, Richard Prosser wrote= : > Twist Grips are available as spare parts for electric scooters. They > commonly work using magnets and hall effect devices. > > RP > > > On 29 October 2013 18:53, K S wrote: > > > Thanks. > > > > Pitch bend wheel looks ideal but seems very hard to buy except as part = of > > something bigger. > > > > > > On Tue, Oct 29, 2013 at 3:19 PM, Matt Callow wrote= : > > > > > How about a single axis joystick, or a pitch bend wheel? > > > Matt > > > > > > > > > On 29 October 2013 14:00, K S wrote: > > > > > > > Hi piclist. > > > > > > > > I'd like to electrically propel a hand driven cart and need some wa= y > > for > > > > the operator to set the speed. I'm hoping for some type of thumb > > > activated > > > > lever that could be mounted to a cross bar. (I'm thinking like the > gear > > > > levers on some pushbikes, but need not be.) It could either be a > > > multi-step > > > > switch (for, say, slow, medium and fast) or preferably a 1/4 turn p= ot > > or > > > > similar which gives full control across the range. When let go it > > should > > > > spring return back to zero. > > > > > > > > Maybe someone knows the name of what I'm looking for? I'm hoping fo= r > > > > something off-the-shelf. > > > > > > > > TIA. > > > > Kris. > > > > -- > > > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > > > View/change your membership options at > > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > > -- > > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > > View/change your membership options at > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .