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Here are some facts and figures for the Golden Motor hub motors: Smart Pie 4 Max phase current: 50A Continuous current: 18A Open Voltage: 20V - 60V Rated Power: 200-400W Magic Pie 4 Max phase current: 80A Continuous current: 30A Open voltage: 20V-60V Rated power: 500-1000W

Thank you for the advice. I am willing to risk it and make it the best kit on the market. Golden Motor is a big company with massive resources. The kit sells well world wide and they can't all be wrong. Still I appreciate your comments.

It is not common to find a BMS in RC packs simply to save weight and allow the controller to use as much of the available current. Voltage is related to the speed of the motor and the current is the torque element if I understood the fundamentals of a motor. Increasing the voltage to 36V will...

I have yet to hold a motor that is light. Direct drive brushless motors are my choice. The Smart Pie 4 Vector controller can withstand 18A continuous current and safely upto 63V can be applied. The motor can be programmed for 24, 36 or 48V operation through USB with rated power of 250-400W and...

I almost bought one of those but changed my mind as I wanted a more professional machine due to change of plans. Also saw some negative comments about the 788+. I do have a LabFacility L60+, 60J thermocouple welder and use it regularly so the transition to spot welding with the new welder...

I don't disbelieve you and I am aware of all the points you raise. You make valid points and I respect that. But in this industry nothing is for certain for too long and I am putting my faith in to NMC given all its imperfections. We will see what Tesla will decide on as I understand it, there...

Hi to all, I will be taking delivery of a Cadex C7400ER battery analyzer (also C7400) and a 250J Dual Pulse capacitive discharge spot welder and pure nickel tape for battery tab welding. I would welcome anyone with any experience of the above to give some guidance and welcome members to send...

Here is a news clip from a news site: "To make ion batteries a little safer, manufacturers have replaced the lithium cobalt oxide with either lithium iron phosphate, lithium manganese oxide (one oxygen atom as opposed to dioxide’s two atoms), or lithium nickel manganese cobalt oxide. This...

I will soon have 24, 36, 48V 10Ah Li-NMC batteries and believe the 36V will be around £250 with 2 year warranty. OptimumNano 36V 10Ah LiFePO4 will be less than £290 with 2 year warranty and a top quality 5A charger too. Or 18650 29E Samsung cells to replace your existing battery pack.

I chose Golden Motor as they are a big manufacturer with lots of experience with brushless motors upto 20KW power output. The ebike hub motors have the controller built into the hub which makes the motor very quiet. Built-in cooling with a fan. Programmable motor power and battery voltage and...

From what I have seen in various reports, almost all ev cars are having NMC battery packs. Since NMC has high energy density and low weight it makes sense and seems the safety is acceptable too. Time will show which battery chemistry will rule. As far as I see it, NMC is the one presently. I...

Hi Everyone, I am new to the ebike scene and would like to know if anyone has experience of the Smart Pie 4 or even the Magic Pie 4. They are cheapish Chinese ebike conversion kits. I understand they have sine wave controllers, regenerative braking and the quitest direct drive brushless hub...

Hi everyone, I am new to the forum and ebikes but keen to get going asap. I looked at all available battery choices and NMC is really attractive. Best power to weight ratio of any battery. Hence I contacted a NMC pouch cell manufacturer and ordered a 24V 20Ah battery pack with BMS and a charger...