Hello Everyone,
I've been on these threads for quite a while trying to soak it all in. I'm thinking about designing my first ebike. I'm currently riding an iZip e3 Dash. It's not a bad bike, but I have a few complaints (range, top speed, torque, etc.).
This is my idea for a first build. Please let me know what issues I'm likely to face. Or if anything looks way off.
Greyborg Warp Frame Set with Sclumpf Drive
BMC v4 Cruiser or Speed kit (with CA, controller, wires, etc.)
26" wheels, Schwalbe Marathon Plus tires
Single speed freewheel in the rear
Two em3ev 50v 22ah NCA batteries in parallel (total of 2210ah but with a low C rate allowing only 35a continuous discharge for each battery)
Low to middle grade front and rear suspension (open to ideas)
Hydraulic brakes in the front and rear
Design goals:
(1) 100mile + range with light to moderate pedaling at 20mph, (2) when desired, comfortable throttle only cruising in the low 30's mph, (3) ability to hit 40mph for short bursts, (5) reasonable weight (maybe 80lbs?), (6) decent torque, (7) ability to pedal assist without cogging for increased range or if battery dies/fails.
Specific questions
(1) The two NCA high energy batteries weigh only 25 lbs total and provide over 2kwh in energy. Too good to be true? Even if run them at 40amps for 2000w of power, I'd still be at less than 1c for the 44ah total battery. Am I doing the math right? Does this make sense if I don't need more than 2000w and want range in a lighter package?
(2) With 26" wheels, what kind of top speed can I expect with this build? The ebikes.ca simulator doesn't have the v4 BMC.
(3) If this bike is designed for mostly road and light off-road use, do I really need an expensive double crown suspension? Can I pick apart a $500-750 bikesdirect.com mountain bike for parts?
(4) How difficult will this be to wire? Will I likely have to cut my own hole in the Greyborg frame for a charger?
(5) Any other ideas from the group?
Thanks so much in advance!
I've been on these threads for quite a while trying to soak it all in. I'm thinking about designing my first ebike. I'm currently riding an iZip e3 Dash. It's not a bad bike, but I have a few complaints (range, top speed, torque, etc.).
This is my idea for a first build. Please let me know what issues I'm likely to face. Or if anything looks way off.
Greyborg Warp Frame Set with Sclumpf Drive
BMC v4 Cruiser or Speed kit (with CA, controller, wires, etc.)
26" wheels, Schwalbe Marathon Plus tires
Single speed freewheel in the rear
Two em3ev 50v 22ah NCA batteries in parallel (total of 2210ah but with a low C rate allowing only 35a continuous discharge for each battery)
Low to middle grade front and rear suspension (open to ideas)
Hydraulic brakes in the front and rear
Design goals:
(1) 100mile + range with light to moderate pedaling at 20mph, (2) when desired, comfortable throttle only cruising in the low 30's mph, (3) ability to hit 40mph for short bursts, (5) reasonable weight (maybe 80lbs?), (6) decent torque, (7) ability to pedal assist without cogging for increased range or if battery dies/fails.
Specific questions
(1) The two NCA high energy batteries weigh only 25 lbs total and provide over 2kwh in energy. Too good to be true? Even if run them at 40amps for 2000w of power, I'd still be at less than 1c for the 44ah total battery. Am I doing the math right? Does this make sense if I don't need more than 2000w and want range in a lighter package?
(2) With 26" wheels, what kind of top speed can I expect with this build? The ebikes.ca simulator doesn't have the v4 BMC.
(3) If this bike is designed for mostly road and light off-road use, do I really need an expensive double crown suspension? Can I pick apart a $500-750 bikesdirect.com mountain bike for parts?
(4) How difficult will this be to wire? Will I likely have to cut my own hole in the Greyborg frame for a charger?
(5) Any other ideas from the group?
Thanks so much in advance!