The Big Wheel

I originally wanted to get an amped kit, but they are like $460 for 500w motor. I found the 1000 watt kit from thelashop for $260. https://www.thelashop.com/catalog/48v...n-K-p-723.html

Which kit should I go with? Is the amp kit better quality? How much faster would a 1000 watt kit be over a 500 watt kit? Anyone here running the kit from thelashop?

nwmtnbkr

Check your state motor vehicle code--at 1000W, your bicycle may be classified as a moped and require licensing and insurance. Also, the faster you go, the greater the stress on your bike's frame (and other components). Good brakes are critical. On some forums, I've read posts by owners with 1000W motors and 48V or 72V batteries and controllers who claim they've achieved close to 30 MPH or more. That's faster than I'd want to go on a bicycle that's not been designed for such speeds. Good luck.

The Big Wheel

bump for more opinions, which kit should I go with?

wernmax

https://www.goldenmotor.com/magicpie/..._magicpie.html

Little-Acorn

BigWheel, it's hard for anyone to tell you what kit to go with, since they don't know your conditions, planned usage, budget, etc. You miht be better off asking questions like, "Has anyone tried the LaShop 26" 48V 1000W hubmotor, what batteries did you use, how did it behave on hills/flatland, anything you particularly liked or disliked about it, etc.?" ....and then make up your own mind.

I am in the middle of the same search. Would like to get a 36V or 48V, 700 to 1000W hubmotor, haven't decided between internally-geared and non-geared. My bike is a Trek 7500 hybrid, so I'd like to get a 700c wheel. Unfortunately, none of the shops (maybe they are all one shop) in South El Monte has a 700c wheel, though a number of the Chinese ones (in Hong Kong, Guangzhue, etc. do offer 700c). I want to commute from home to work and back, 12 miles each way, 3/4 falt, a few hills. Will probably be running sealed lead-acid (SLA) batteries, which do not perform as well as LiFePO4 but weigh a LOT more. Have to do it due to budget constraints, I'll probably have 50 pounds of batteries on that poor bike plus my own 250# posterior. One reason I ride Treks is beause they are STRONG. Will probably use a front hubmotor, probably with disc brake for a load like that.

Look at https://endless-sphere.com/forums/ for some great advice on electric bikes, kits, manufacturers, motors, etc., the forum is a gold mine.

JerseyEbiker

IMO the best motors for the money are conhismotor.com items. They come disk ready. They are the highest quality and most expensive motors coming out of china as well. There are a good few ebay stores. You are looking at 300-360$ usd. What you get with these kits:

-smooth start controler(saves loads of power on startup and doesnt boar out your frame)
-pedelic sensor
-controler, brake levers, thumb or twist throttle
-motor mounted on the rim with a tire
-SLI charger

Its everything you need. The kits that are showing up with Disc brakes I can vouch for. There is only one vender doing it. Its a very beefy brake. The mounting bracket for the brake can double as a torqe arm with a simple addition of a peice of flat stock drilled out and a studded pipe clamp that can be found in any hardware store.

These kits on a 700c wheel and my 230 pound self do around 34-38 MPH. On a 26 inch wheel I can hit around 32-34 topped out. They cruise effortlessly at 25-28. Clime almost any hill with no stress. All you have to do is throttle back. Certain hills like certain speeds. Once you get the hang of it you never labor the motor.

Some people dont like the smooth start controlers. They want that break-neck take off power. Thing is that break neck off the line power wastes more then half of your battery on the average stop and go around town ride. It also puts alot of wear on the motor. If something is going to let loose its going to be off the line most of the time.

JinbaIttai

That motor resembles the Goldenmotor 1000W motor.

FWIW my 500W Ampedbike kit hits a 1300 watt peak on a daily basis and I often hold it at 1100 watts for a couple of minutes during hill climbs. This is in a hot environment. Back when I was using a 36V lithium battery it would peak at 850 watts.

The wattage rating isn't a good way to go about buying a kit.
Watts = Volts X Amps.

Volts is what your battery is (typical lithium 48 volts systems are 59 volts fresh off the charger and around 51 volts later)
Amps depends on whatever value your controller is limited to (My Ampedbikes controller has a 22 amp limit).
51 X 22 = approx 1100 watts.


Motors with larger wattage ratings tend to be heavier and noisier. If I were to use that 1000W motor with my current controller, it would still draw no more than 1300 and 1100 watts because the controller would be maxed out.

If I were to use a different controller that had a much higher amperage rating, say 50 amps, I would eventually overheat my 500W motor and damage it. The 1000W motor would probably not overheat under the same conditions. That's its only benefit--having a factory rating of being able to sustain 1000 watts at some particular voltage under some particular conditions with becoming damaged. It's a very vague rating though.

Whatever motor and kit you choose, hope this helps, good luck.

EDIT: I just reread the controller specs on the controller I think I have and it's a 22amp w/35 amp peak. That means I'm peaking at more like 1800 watts on the 500w motor the kit came with. Not bad for traveling 700 miles up 55,000 feet and back down again. I'm not promoting ampedbikes in particular; I'm suggesting 500W hub motors in general are enough unless you're a torque freak.

cerewa

In terms of power, the controller is often the limiting factor. You don't want to exceed the rated amps or rated volts of the controller.