Gentlemen
Last year I constructed an electric outboard leg based on a Turnigy 80100 motor with a 3:1 reduction belt drive which I operate at around 300w, with the option of 750W when necessary. Having recently constructed two PV panels which output 170w in good sunlight and in excess of 100w under light cloud, I fancy building a smaller boat, probably based on a Canadian canoe, such that the panels will provide most if not all the required power for cruising. After extensive reading of the work done by Human Powered Boat enthusiasts I believe the power to be quite practicable if losses are kept to a minimum.
Looking around for an appropriate motor and transmission I feel there is merit in driving a suitable propeller by a spring steel shaft directly from a 250w ebike hub motor which would remove the need for a geared or belt reduction.
The only problem to be solved is the typical hub motor runs at around 200rpm and for my proposed installation I would like to run at nearer 5-600rpm.
My question, how does one persuade a hub motor to run at higher speeds?
GeoffV
Last year I constructed an electric outboard leg based on a Turnigy 80100 motor with a 3:1 reduction belt drive which I operate at around 300w, with the option of 750W when necessary. Having recently constructed two PV panels which output 170w in good sunlight and in excess of 100w under light cloud, I fancy building a smaller boat, probably based on a Canadian canoe, such that the panels will provide most if not all the required power for cruising. After extensive reading of the work done by Human Powered Boat enthusiasts I believe the power to be quite practicable if losses are kept to a minimum.
Looking around for an appropriate motor and transmission I feel there is merit in driving a suitable propeller by a spring steel shaft directly from a 250w ebike hub motor which would remove the need for a geared or belt reduction.
The only problem to be solved is the typical hub motor runs at around 200rpm and for my proposed installation I would like to run at nearer 5-600rpm.
My question, how does one persuade a hub motor to run at higher speeds?
GeoffV