Trying to get my Razor Ecosmart Metro running

[Duke Silver]

Hello everyone,
I am new here and was hoping to get some help getting the Razor Metro scooter I bought as a roller up and running. Aside from the wires for the charging port and power switch the scooter has nothing. I need a throttle, controller and a battery or batteries. I was planning on going with one 36v 10ah Li-ion instead of the 3 battery setup. I was looking at either one of these 2 batteries, https://www.amazon.com/gp/product/B0DW8XCVC7/ https://www.amazon.com/Battery-Electric-Connector-250-1000W-Bicycles/dp/B0DPSBJ1XC?gQT=1&th=1

As for the controller and throttle I was looking at this set from ebay, Razor MX 500 MX650 48V Overvolt Kit EcoSmart Metro Throttle & Controller

I've attached a pic of the wiring that is left under the deck, 2 wires were cut that I'm sure are going to have to be spliced into something.
As for the Li-ion battery setup, I have seen a video on youtube of someone cutting the end off of the original and new charging cord and putting to original cord on the new charger. I'm wondering if that is a good option or if someone has another method that would work better.

Somewhere down the line I would like to swap out the original motor with a 36 Volt 1000 Watt motor from electric scooter parts, another idea I got from someone on youtube doing that to their Metro scooter.

Any help I could get here to get this up and running I'd appreciate. Thanks

 

[Chalo]

The two heavy wires (red and black) are main battery power to the controller. The skinnier red wire is most likely a controller enable circuit that in many conditions would be connected to a switch to turn the motherless bastard on and off. You haven't provided enough data to tell what's going on with the wires in the picture.

 

[Duke Silver]

The two heavy wires (red and black) are main battery power to the controller. The skinnier red wire is most likely a controller enable circuit that in many conditions would be connected to a switch to turn the motherless bastard on and off. You haven't provided enough data to tell what's going on with the wires in the picture.

I'm not even sure what's going on with the box lol sorry. That's why I took a picture of it hoping somebody could explain to me exactly What wires were cut and for that matter what the reason was I thought everything was plug and play.

 

[Duke Silver]

So by the looks of it it seems to just be for the power switch. The battery and the charging port are still intact.

 

[amberwolf]

Somewhere down the line I would like to swap out the original motor with a 36 Volt 1000 Watt motor from electric scooter parts, another idea I got from someone on youtube doing that to their Metro scooter.

If you're going to do that, I'd recommend starting out doing this, because to make that work you might (depending on the existing motor, and whatever battery and controller / etc you buy now), have to change everything else out, too, and have wasted all the money you're spending to get it working.

Depending on what you need the scoooter to do for you, and what riding conditions / terrain / wind / weight / etc you have, a bigger motor/etc may just be a waste of money. If you use online simulators or calculators like those at ebikes.ca you can guesstimate the actual power needed to do the job under your specific conditions, and then you can see if what you already have for a motor, and the controller/battery you're going to get, would do that job.

 

[Duke Silver]

If you're going to do that, I'd recommend starting out doing this, because to make that work you might (depending on the existing motor, and whatever battery and controller / etc you buy now), have to change everything else out, too, and have wasted all the money you're spending to get it working.

Depending on what you need the scoooter to do for you, and what riding conditions / terrain / wind / weight / etc you have, a bigger motor/etc may just be a waste of money. If you use online simulators or calculators like those at ebikes.ca you can guesstimate the actual power needed to do the job under your specific conditions, and then you can see if what you already have for a motor, and the controller/battery you're going to get, would do that job.

Gotcha. I'll have to look into that website you mentioned. For the most part it'll be my kids driving it around the neighborhood, I might jump on it myself to maybe run over to a store real fast, and I weigh 170lbs. That would probably be the most weight that would be on there.

Just for reference everything that I said I was basing off of these two videos that I found on YouTube regarding modifications of this scooter.

No I'm not doing everything the same as them. Just kind of picking and choosing based off of what they've done. Right now I really just want to get it up and running for my kids. So that's why I'm trying to figure out if the information I gave regarding the lithium ion battery and that controller throttle setup will be good enough. Then just trying to get some help wiring it up. I did find a wiring diagram through this forum that I've attached so it seems pretty simple to follow along and do what I need to do. But based off of that throttle that I would be ordering off of eBay it seems like the key would be the new power switch so I'd have to reroute anything to that plug instead of the switch under the deck. And then there is the charging of the new battery. I'm assuming I could go either route, do what the guy in that one video did that was changing the battery to the lithium ion and cut the cords and put the old fitting on the new lithium-ion charger cord or I could just make a new hole in the side of the plastic housing and find a way to secure it to there. I have a 3D printer I'm sure I could come up with something if it isn't stable enough to just be able to put through there and lock it in with a nut.

 

[gromike]

What's your planned top speed?

 

[Duke Silver]

What's your planned top speed?

I'd like to get it up to at least 25mph. If I'm not mistaken stock varies between 12 to 18 from what I've read

 

[gromike]

In my opinion you're pushing the envelope at 25mph with that scooter, though some around here would build it even faster.
Does it have regen braking? I don't see a front brake and the rear drum brake looks kind of wimpy. At least you'll be losing the weight of the lead.

 

[Duke Silver]

In my opinion you're pushing the envelope at 25mph with that scooter, though some around here would build it even faster.
Does it have regen braking? I don't see a front brake and the rear drum brake looks kind of wimpy. At least you'll be losing the weight of the lead.

I've never heard of Regen braking, and yes, it's only the drum brake. I know a lot of you guys are into really modifying these when I look through the forum. As I mentioned I just really want to get this up and running for my kid. I'm basing everything off of what those two people did in the video to this style scooter and what they're telling me they're getting with these few modifications. I'm not trying to drop 500 to $600 into the scooter. Between the throttle, controller, and battery I'm hitting about $200 just by putting that into it to get it up and running. Now if I want to later down the line do some modifications and drop some money, sure no problem. I'm just talking about what I would like to do regarding upgrading the motor, not going to do it right now and at that point I might even look into upgrading to 48 volt instead of 36. My biggest thing is just to get it up and running. So I'm going to order the throttle and controller from eBay, I touched base with the seller for that and he said it will work with my scooter. Then I'm going to put an order in for a 36V 10AH lithium ion battery as well. I'm hoping based off of that diagram it's pretty straightforward with setting everything up. As I mentioned it seems like I'm going to have to disregard the on/off switch and wire it up based off of the key for the new throttle I'm getting Since that will serve as the new on/off switch. Same thing with the charging port I can either go the route that the guy and the one video did and swap out the cord ends and then wire it up to the existing charge report on the scooter or I can just fit a new port on there with the existing one on the new battery. It didn't come with a charging cord either so that's one more expense I would have to put out if I was going to swap out the cord end.