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Razor Ecosmart Metro increase range and uphill ability

I have a Razor Ecosmart Metro. I am using the scooter in training my dog for sleding (dog pulls scooter along flats, downhill and up hills with motor assist). My course includes flats and hills. The problem is that the dog has more stamina than does the scooter. I don’t need high speed, but I need more range and more up-hill ability. The training course has several steep hills that are too steep for the scooter in its stock configuration. The scooter will power uphill if I walk along side, but I can’t ride it up some of the hills.

After searching the web and your site, I plan on making the following modifications:
Add a 12 volt battery in series to go to 48v
Change motor to your 48v-1000w MOTOR part# mot-481000
Change controller to one of your 48V 1000W controllers (which one do you recommend?)
Change to your 48v THROTTLE THR-75

(Will your 48 volt charger part# CHR-48V1.6AXLR plug directly into the existing charger port and charge the batteries configured for 48 volts?)

Also, I will be adding front brakes and I think I will need your front brake lever LEV-30R.

As far as the up-hill situation goes, I plan on making the battery-motor change and then decide if I need to change the gearing.

OK, given all of that am I thinking in the right direction for this project? Everything I have read on the web leads me to believe that you folks are THE AUTHORITIES in this area, so please give me your thoughts.

For a 48 Volt controller, our SPD-481000B 48 Volt 1000 Watt controller is the one that we recommend.

Our 48 Volt charger item # CHR-48V1.6AXLR will plug directly into the  EcoSmart's charger port and charge the batteries configured for 48 Volts.

The MOT-481000 and MOT-481000B motors are designed to rotate in the clockwise direction so they should be mounted in the opposite direction (180 degrees rotation) as the EcoSmart's original motor, which would require mounting them above or in front of the wheel instead of on the side of it. Due to this, you may want to consider using our MOT-SD361000 36 Volt 1000 Watt motor which rotates counterclockwise. 

Our MOT-481000 and MOT-481000B 48 Volt 1000 Watt motors have 11 tooth sprockets for 8mm chain, and the Razor EcoSmart has #25 chain, so either a sprocket for #25 chain would need to be installed on the 1000 Watt motor, or a sprocket for 8mm chain would need to be installed on the rear wheel.

As an alternative to a clockwise motor, we carry a 36 Volt 1000 Watt motor item # MOT-SD361000 that is designed to rotate in the counterclockwise rotation so it could be mounted in the same location as the EcoSmart's original motor. For the MOT-SD361000 motor, we recommend the SPD-SD1000 controller and THR-500 throttle

MOT-SD361000 has an 11 tooth sprocket for #25 chain so it is compatible with the EcoSmart's original wheel sprocket and chain. 

The MOT-SD361000 motor is considerably smaller than the MOT-481000 and MOT-481000B motors because it has neodymium magnets and the MOT-481000 motors have ceramic magnets. 

When switching from a 500 Watt to a 1000 Watt motor and using the scooter to go up hills the amount of power that the motor consumes will be significantly increased so the range will decrease until larger batteries are installed. 

Please let us know if you have any questions.

Thanks for the speedy reply.

OK, your suggestions take me in a different direction than I had been headed.  Let me chew on them and get back to you.



What is the best battery configuration. 4 12v 10ah lithium ion wired together? Please advise

A 48 Volt controller with 30 Amp current limit is typically used with a 48 Volt 1000 Watt motor and most 48 Volt 10Ah lithium battery packs are rated for a maximum continuous discharge current of 20 Amps, so a lithium battery pack with a higher than 10Ah rating would most likely be needed. 

Another thing to consider with a lithium battery pack is the low-Voltage cut off level of the controller. Most 48 Volt controllers for brushed motors are designed for lead-acid battery packs and have a low-Voltage cut off level of 42 Volts. 48 Volt lithium battery packs can be discharged down to 37 Volts, so with a 42 Volt cut off level the full capacity of the battery pack could not be used. The solution to this is to use our 48 Volt 1600 Watt brushless motor and controller because this controller has a low-Voltage cut off level of 37 Volts so it will work well with a lithium battery pack. 

You have given me much to consider.

I think that with some small modifications to the deck mount  could fit 3 of your #BAT-12v12a batteries in my Razor Ecosmart Metro battery case.  That's a lot of amps, but I'm asking the scooter to do a lot of work going up hill.

If I go in that direction along with the 36 Volt 1000 Watt motor item # MOT-SD361000 that you recommended, what controller / charger / throttle combination would you recommend?

Thanks for your assistance


Unfortunately, we do not have a Razor EcoSmart scooter here to check and see, however, we can give you the dimensions of the batteries so you can check. Both 12V 12Ah and 12V 15Ah batteries are 6" long x 3-7/8" wide x 3-3/4" high (151mm x 99mm  x 96mm).

For the MOT-SD361000 motor, we recommend the SPD-SD1000 controller and THR-1000 throttle. For a battery pack consisting of three 12V 12Ah or 15Ah batteries, we recommend the CHR-36V1.6AXLR battery charger

Please let us know if you have any questions.

OK, thanks for your reply.

I don't really understand the difference between all of the chargers that you offer.  It seems like you have several that would plug into my system, so why do you recommend the 1.6 amp charger instead of one of the higher out put units if I am going to higher rated (12 or 15 amp) batteries.  Does it have to do with lower rated chargers charging more effectively?



The lower the Amp rating of the battery charger that a battery pack is recharged with longer the lifespan of the battery pack will be. For this reason, we usually recommend a battery charger that will recharge the pack in around 6-8 hours. However, battery chargers with higher Amp ratings can be used for faster battery pack recharge times whenever a faster recharge time is needed. 

We have a battery pack recharge time calculator that can be used to determine how long it will take a battery charger to recharge a deeply discharged battery pack. 

Please let us know if you have any questions.

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