Is This A First Good eBike Kit, Will It Do 30MPH?

[EX360G]

Hi.

I am wanting to get an electric motor and battery to go on my new bike. (when I get one) I know a little bit about the battery's and motors as a member of my family got the 500W DD Motor from EM3EV and a 36V Battery from Ping. I want to have a maximum speed of around 30MPH and would like to be able to cruise at around 22-25. I'd like to have a range of 10 miles with some fairly light pedaling. There aren't a lot of hills where I usually ride, it's mostly flat and I'd ride 90% of the time on roads. (private of course )

I've been reading quite a lot and I think the upgraded Mac Motor from EM3EV with a 48V 15AH V2.5 LiFePO4 Battery Pack from Ping. I'll put the links to the battery and motor below along with the options I think would be best below.

Any advice or recommendations are appreciated. I'm not sure if there are any changes which would benefit me.

The options for the motor:

- Controller Type 9 fet 30A (36-52V, IRFB3077)
- Motor Speed 320rpm loaded @36V 8T Upgrade
- Front/Rear Motor Rear
- Wheel Type 26" Alex DH19 Disc
- Throttle Type Full Twist
- Ebrakes No

Battery
http://www.pingbattery.com/servlet/the-12/48V-15AH-V2.5-LiFePO4/Detail

Motor
http://em3ev.com/store/index.php?route=product/product&product_id=138

Thanks.

 

[teslanv]

Hard to go wrong with EM3EV & Ping. They are both highly respected on this forum.

 

[Gypsy]

Check out http://Electricrider.com, they supply me and have great service. The Phoenix kits will achieve the results you want. I use a 48V20aH battery and a 4840 controller. Their batteries are high quality but pricey...if you can build a li-poly then go with a Lyen controller and some hobbyking lipo like these http://www.hobbyking.com/hobbyking/store/__15521__Turnigy_5000mAh_4S1P_14_8v_20C_hardcase_pack.html.

If you want a turn-key system from the US then electricrider is a smart buy.

 

[dogman dan]

The typical 7 turn dd motor like EM3ev sells will go about 27 mph on a 48v ping. A 15 ah size runs the 20 to 25 amps controllers perfect, an at full gallop you will have about 18 miles of range. At 20-25 mph, about 22 miles of range.

It's a good setup, one I rode for 8000 miles with a lot of convenience and reliability.

 

[EX360G]

Thanks for the replies.

So are you saying the 500W DD kit would be better than the Mac Motor, Dogman?

Also, I have another question. If I were to get the high rate BMS on the 48v 15Ah from Ping would I be able to upgrade to the 12fet 40A controller with the Mac Motor?

 

[teslanv]

Thanks for the replies.

So are you saying the 500W DD kit would be better than the Mac Motor, Dogman?

Also, I have another question. If I were to get the high rate BMS on the 48v 15Ah from Ping would I be able to upgrade to the 12fet 40A controller with the Mac Motor?

The Ping Batteries are rated for a 1C Discharge. A 15Ah battery running 40A would be pushing 2.67C. Your battery would not last long in that environment.

If you want to go with a 40A controller, you are better off with HK LiPo, IMO.

 

[EX360G]

I really want the Ping battery. So would I have to stick with the 9fet 30A controller?

 

[teslanv]

The bigger the battery, the more amps you can push. If you have the space and budget for the 30Ah Ping you could get 30A out of its rated "C" (1C)

A 15Ah Ping running on a 9FET 30A Controller would still be double the rated "C" of the battery.

Not saying the smaller battery won't work, High-amp controllers just pushes it much harder and it will die sooner.

That being said, if you generally ride with a gentle assist on flat ground, you will rarely need all 30 or 40 Amps. - More likely you will only need 5-10 amps of continuous power, unless going up hill or at WOT.

 

[dogman dan]

First I just gave the example of the dd, because I am most familiar with them. The mac, in the right winding will do 30 mph.

But here's the rub. in 15 ah size, if you use 30 amps continuous for long, the cells will wear out faster. The problem is not the bms size. So you will need a 20 ah ping to run hard with a 30 amps controller.

And, to make it perfect, 48v 20 ah ping is a bitch to carry. It will not fit the triangle, and hauling ass with a poor handling off balance bike is a great way to go to the ER.

The pings a great choice for a commuter, 20 amps controller, ride 20-25 mph. But the amps spikes of a 30 amps controller will unbalance the pack and give it short range.

But the batteries that EM3ev sells will take the 30 amps controller. So there is your solution.

 

[wesnewell]

Welcome to ES****Do this before your first post or now (it's retroactive)*****
Please go to the User Control Panel, select Profile, and then enter your city, state/province, and country into the Location field (country minimum) and save it. Once done, your location will appear in every post so you won't have people asking where you are ever again. This will help people help you. Example: Wylie, TX, USA. or just USA, but country as a minimum, and country is the most important. There are many cities with the same name all over the world. Without knowing what country you are in it's hard to make any recommendations. Thank you.

 

[Drunkskunk]

Ping makes a good battery and stands behind his product. He's earned a good reputation with us on the forum, and used to be an active member.

But for the power you want to run, a ping battery isn't the right solution. they do have a lower C rate, and aren't up to the performance of running at 30mph for long periods of time.

Paul's batteries at EM3ev are more expensive, but also more capable of handling that kind of power.

But here's the interesting bit. Shipping cost. Its damn expensive for either compnay to most of the western world. However, if you get the battery from EM3ev at the same time as you get the motor, the shipping cost will be much less, pulling the price of the EM3ev battery down closer to the Ping with it's shipping.

 

[999zip999]

What bike what size ? What is your size ? I use a large frame for my 20ah ping. Make a card board of a 48v20ah ping to see if it will fit. If not you need to look at em3ev for the speed you want.
Just cut up two shoe boxes.

 

[Supertux1]

Take a look at the bike in my signature.

It's built around an EM3ev 10T Mac / 12 Fet Infineon / Samsung 18.5Ah 22P triangle battery kit and will cruise easily at 22-25 mph, and sometimes gets close to 30 on a full charge. I have added some stuff to it over the winter and will be updating the post shortly.

 

[dogman dan]

Lotta people really like the Mac in the 10 t winding. I favor the dd motors because my climate is crazy hot in summer.