Supratad
Well-known member
Is there any inherent drag caused by magnets within a specially designed rear hub for an e-mtb?
I just had this idea while pootling along today, gently coasting down a slight slope.
Unlike the very old bike light dynamos that dragged on tyres to spin a dynamo, a specific design hub could have rotating magnets or wire coils, whichever works best round an axle housing, to generate a charge for extending a ride.
If there is no real drag created by a generator than it would seem a missed opportunity not to have this as an integral part of an emtb rear wheel.
Extra weight would be minimal , especially on an emtb, and close to centre of rotation which is ideal.
Any thoughts, good people? Have I missed a vital element?
I just had this idea while pootling along today, gently coasting down a slight slope.
Unlike the very old bike light dynamos that dragged on tyres to spin a dynamo, a specific design hub could have rotating magnets or wire coils, whichever works best round an axle housing, to generate a charge for extending a ride.
If there is no real drag created by a generator than it would seem a missed opportunity not to have this as an integral part of an emtb rear wheel.
Extra weight would be minimal , especially on an emtb, and close to centre of rotation which is ideal.
Any thoughts, good people? Have I missed a vital element?