gmihestean
100 mW
- Joined
- Dec 12, 2015
- Messages
- 38
My current setup: A kit i bought off ebay. http://www.ebay.com/itm/291334105432?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Current Setup:
Battery: 36v 15ah (3 12v 15ah Sla in series )
controller: 36v 500w is printed on the controller. Amps are not listed, china ebay sellers don't knowing anything about their products. Volts X Amps = Watts, so 500w/36v=14amp controller?
motor: 36v 500w
Total bike weight: 80-95 lbs
Rider weight: 135 lbs
max continuous speed: a SLOW 16.0mph
The bike's top speed is much slower then expected. I was thinking i would get at least 20mph. I want to upgrade the battery and controller but still keep the original motor.
Intended use: I would like my upgraded bike to have a 30mph top speed. I would like to use it for 26mile trips. If i cruise at 20-25 mph i believe 20ah should be enough. I am thinking about this configuration:
Battery: 48v 20ah lithium
controller: 48v 1000w 20a or 30a or 40a? or 1440w
motor: 36v 500w
First problem. I can't find a 48v 20a 1000w controller which would give me a true 1000w. They all seem to be 48v 30a or 40a 1000w which doesn't make any sense, or they don't list what the amps are. A 48v 30a controller should be 1440w not 1000w right? 48v X 30A = 1440w. So that controller is only 20a, not 30a, or its actually 1440w, not 1000w. Now i am really confused. Are the kits sold on amazon and ebay actually 1440w but just listed as 1000w kits because the motor is rated to run at 1000w? That means my kit can actually already be 720w or 1000w, its just the seller listed the motor's 500w in the listing. The kits don't list the controllers amps and i haven't gotten a message back from the sellers. I want to upgrade to 48v 1000w based on the 1000w kits reviewed on amazon, because they claim a 30mph top seed. So that means i would need a 48v 30a 1440w controller to achieve a 30mph top speed if the watts are listed incorrectly or if the watts they are referring to are that of what the motor is rated to use without overheating. I am so confused. What 48v controller do i need to achieve a top speed of 30mph but will still give me the option of crusing at lower speeds at less amps to maintain a long range? My motor is rated at 500w, can i run 1440w on it if i am careful or is too easy to burn it out?
Second problem. If the battery i buy has a maximum continuous discharge current of 30A is a 30 amp controller ok? Would the 30 or 40 amp controller damage the battery?
Current Setup:
Battery: 36v 15ah (3 12v 15ah Sla in series )
controller: 36v 500w is printed on the controller. Amps are not listed, china ebay sellers don't knowing anything about their products. Volts X Amps = Watts, so 500w/36v=14amp controller?
motor: 36v 500w
Total bike weight: 80-95 lbs
Rider weight: 135 lbs
max continuous speed: a SLOW 16.0mph
The bike's top speed is much slower then expected. I was thinking i would get at least 20mph. I want to upgrade the battery and controller but still keep the original motor.
Intended use: I would like my upgraded bike to have a 30mph top speed. I would like to use it for 26mile trips. If i cruise at 20-25 mph i believe 20ah should be enough. I am thinking about this configuration:
Battery: 48v 20ah lithium
controller: 48v 1000w 20a or 30a or 40a? or 1440w
motor: 36v 500w
First problem. I can't find a 48v 20a 1000w controller which would give me a true 1000w. They all seem to be 48v 30a or 40a 1000w which doesn't make any sense, or they don't list what the amps are. A 48v 30a controller should be 1440w not 1000w right? 48v X 30A = 1440w. So that controller is only 20a, not 30a, or its actually 1440w, not 1000w. Now i am really confused. Are the kits sold on amazon and ebay actually 1440w but just listed as 1000w kits because the motor is rated to run at 1000w? That means my kit can actually already be 720w or 1000w, its just the seller listed the motor's 500w in the listing. The kits don't list the controllers amps and i haven't gotten a message back from the sellers. I want to upgrade to 48v 1000w based on the 1000w kits reviewed on amazon, because they claim a 30mph top seed. So that means i would need a 48v 30a 1440w controller to achieve a 30mph top speed if the watts are listed incorrectly or if the watts they are referring to are that of what the motor is rated to use without overheating. I am so confused. What 48v controller do i need to achieve a top speed of 30mph but will still give me the option of crusing at lower speeds at less amps to maintain a long range? My motor is rated at 500w, can i run 1440w on it if i am careful or is too easy to burn it out?
Second problem. If the battery i buy has a maximum continuous discharge current of 30A is a 30 amp controller ok? Would the 30 or 40 amp controller damage the battery?