Necessity is the mother of invention, trite but no less true. I live on a small island in the straight of Georgia on the West Coast of Canada.. The road surface is very poor, there is no two meters of the pavements that are alike, The narrow roads are very twisty, up and down with average grades of 12% and with only 5 or 6 of short level stretches in a 50km road network. E bikes work very hard here.
I am a senior, I have an active rural lifestyle which demands a significant hauling capacity and I did not find anything electric on the market that allowed me to get around Cortes Island , with buckets of seaweed, or a few 8 foot 2”x4”, or a 60lbs propane tank or my spinning wheel with a chair and tub of roving.
I spent months on the internet looking at hundreds of set ups and designs, this is what I imagined, designed and fabricated over 2 years to meet my needs.
The front wheel motor is an eZee 48V 25A geared motor, the rear motor is a Grin tech Gmac10 48V 25 A clutchless geared motor capable of regen.
The battery is a 48V 57.5Ah with BMS that I built using Vruzend caps, in my view the best way to assemble a battery. The complete battery weights 50lbs
the frame is made of 6061T6 marine grade aluminum alloy 2x2x1/8. I used aluminum because of the weight factor and because I could easily fabricate aluminum. The entire rig weights about 180bls.
I wanted to keep it as simple as possible, there is no suspension
My range on Cortes with no pedaling and from 53V to 46V is 60k at an easy 30k between hills. On flat ground my range would be closer 90k. My range when I use the battery between 80% and 30% is half that range.
I have carried 60 lbs up a 15% grade without pedaling and I can carry a large loads. On the flat I could carry 100lbs+
I have ridden over a 150km so far, the rig rides beautifully and easily it corners well and is extremely maneuverable. It requires some adaptation because it does not ride like a bicycle, but that happens very quickly.
I believe it is a very practical and flexible design
I am a senior, I have an active rural lifestyle which demands a significant hauling capacity and I did not find anything electric on the market that allowed me to get around Cortes Island , with buckets of seaweed, or a few 8 foot 2”x4”, or a 60lbs propane tank or my spinning wheel with a chair and tub of roving.
I spent months on the internet looking at hundreds of set ups and designs, this is what I imagined, designed and fabricated over 2 years to meet my needs.
The front wheel motor is an eZee 48V 25A geared motor, the rear motor is a Grin tech Gmac10 48V 25 A clutchless geared motor capable of regen.
The battery is a 48V 57.5Ah with BMS that I built using Vruzend caps, in my view the best way to assemble a battery. The complete battery weights 50lbs
the frame is made of 6061T6 marine grade aluminum alloy 2x2x1/8. I used aluminum because of the weight factor and because I could easily fabricate aluminum. The entire rig weights about 180bls.
I wanted to keep it as simple as possible, there is no suspension
My range on Cortes with no pedaling and from 53V to 46V is 60k at an easy 30k between hills. On flat ground my range would be closer 90k. My range when I use the battery between 80% and 30% is half that range.
I have carried 60 lbs up a 15% grade without pedaling and I can carry a large loads. On the flat I could carry 100lbs+
I have ridden over a 150km so far, the rig rides beautifully and easily it corners well and is extremely maneuverable. It requires some adaptation because it does not ride like a bicycle, but that happens very quickly.
I believe it is a very practical and flexible design