Evt 4000e electric moped, help needed

[Dean b]

Hi there guys, I've just bought a evt 4000e electric moped, it's 36volt 200 watt, it has 1100km on clock, it is a clean bike, I bought it as spares or repair.

I've took the motor off and one of the 8 brushes had come out inside the motor and jammed the real wheel up almost to a stop, and where the owner had been giving it throttle with the wheel more or less jammed up it's burned the controller out, the motor wires got hot and touched together and burned the controller out, the motor wires touched together right at the point where the come out of the shaft to wire to the motor, I hope people get what I mean as it's hard to explain.

I've put new brush in motor and clean motor out and put the rear wheel back together, I've put the motor wires to a 12 volt battery to test it and the rear wheel spins as it should and it's not stiff no more and free rolls as it should.

My question is where can I buy a controller from and how much are they? They have some on eBay but they have wires for throttle where as mine has a throttle cable that pulls on something on and in the controller?

Can I buy a throttle that don't have throttle cable and is a wired throttle and fit that to the bike with a different controller?

My grammar is poor and I hope you can make sense of what I'm saying and asking. Thanks for reading

 

[Dauntless]

https://electricscooterparts.com/manuals/EVT-4000e-owners-manual.pdf

Brushes on the motor, you say? I was reading that it's a brushless hub, but also found mention of a 1500w 48v brushed motor. Can't be 200w if it goes 30mph. First thing is to get straight about that. Does the pic at the bottom look familiar? Comments offered said the EVR168 controller is supposed to be compatible, but that's brushless, 48v. So you need to get all that straight first.

This is apparently built by Tianma, also marketed as a Bravo. But I'm only finding that people have problems with them. They're happy with it when it works.

 

[Dean b]

It has a plate on rear where number plate should be saying 36 volt 200 watt, it has three 12 volt battery's.

It's a yellow moped looking just like the picture you have shown,I read the ever 168 has same running gear as the evt 4000e.

it's brushed motor for sure and has 8 brushes, The throttle has a cable that pulls and moves something on the controller as you pull the throttle on and off, all the the controllers on eBay for electric moped have a wired throttle with 3 wires coming from throttle handle to controller where as mine as a cable, hard to explain as I don't know the name of the components in the controller.

I just need to find a direct replacement controller for one of these but it's a nightmare finding one so was thinking is there another comtrolller on eBay that I could buy and make fit if you now what I mean haa.

Will post pics of the moped tomorrow and the controller has no sticker with info on it like the moment you have picture.

 

[Dean b]

My moped has a throttle cable that pulls on something in the controller when you put throttle on and off, what is this kind of throttle called, the controllers I see for sale on eBay don't have this kind of throttle?

My moped as a Throttle cable not 3 wires with a plug on the end of them that plugs into the controller.

Please put link up with some controllers you think will fit this etv 4000e I have here.

Hope you no what I mean, I'm going to try post some pics soon buddy.

 

[Dauntless]

My big question is if this is some frankenbike that the company wouldn't recognize. You want to establish if this is all OEM equipment or what.

 

[Dean b]

I can tell You know your stuff as it is the one with a spring, small black like return spring.

Finding it hard as hell to find ones of these controllers to just buy on line, like a direct replacement I can just buy and plug to my scooter and go.

so you understand now my throttle handle has a cable coming from it not 3 wires like other electric mopeds have.

So if I buy a controller that I could fit to my moped that don't have throttle pot but instead 3 wires for the trottle, could I then just buy a throttle handle with 3 wires coming from it and get rid of the throttle handle that pulls on a cable?

Hope you understand what I'm saying, my grammer is poor sorry.

Also what wattage amp controller does this moped take as there's no sticker on the controller? Thanks

 

[Dauntless]

Also what wattage amp controller does this moped take as there's no sticker on the controller? Thanks

Supposedly 130 amps to run 1500w at 48v. But you need to figure out why yours would be 36v. Are you sure it's not the 48v controller cutting out with just 36v feeding it? There's a real story of your scooter still to be learned.

 

[Dean b]

There's a number plate on it that says 36 volt 200 watt, it as 3 12 volt battery's and has brushed motor.

They do same bike in a 42 volt brushless model of the evt 4000e and this model seems to be the model that pops up on google when you type in evt 4000e electric moped/scooter and this is what and why this most is confusing you.

Thanks for trying to help tho and taking time to help, I've gone and listed the moped on eBay as spares or repairs needing a new controller as now I have a 125cc moped coming soon.

 

[Dean b]

http://www.ebay.co.uk/itm/252822134670?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

 

[Dauntless]

Well, darn, seeing the pic from the other side I'm thinking there's no chain, so it's a hub. I still wonder if it would work fine with one more battery.

 

[granolaboy]

Your scooter is 48V with a brushed motor, 120A. No way it's going to go with 36V.

In [strike]2009[/strike], EVT switched to brushless motors, and a beefier 130A controller. I have an EVT 168 with the brushless motor. I even added a booster battery. Here's my thread, not sure if it helps with your brushed 4000 though:

**correction** it was 2010 when they went brushless. I have a 2010 EVT. Sorry bout that.

https://endless-sphere.com/forums/viewtopic.php?f=12&t=58055&hilit=evt+168

These might help:

Owner's Manual:

https://electricscooterparts.com/manuals/EVT-4000e-owners-manual.pdf

Service Manual:

http://bravoelectricvehicles.com/Media/Documents/EVT-4000e_March2009.pdf

But really, 36V, 200W? Look at that motor. If that's 200W, I have a bridge to sell you.

 

[granolaboy]

Oh, and might as well mention as well that it has no pedals, and is therefore not an e-bike, but a Limited Speed Motorcycle (LSM). Essentially the same as a 50cc scooter.

You'll need to register & insure it to ride it [legally].

 

[granolaboy]

Ah, found the vifv thread where they boosted the brushed models:

http://visforvoltage.org/forum-topic/motorcycles-and-large-scooters/757-evt-60-volt-mod

 

[AussieRider]

Hi Dean.
Just found this thread. Have you sorted the problem with your EVT? The throttle cable pulls on a sliding plate in the controller which has a V shaped slot running between a photo diode and a pair of LEDs, one for power mode and the other for economy. When the throttle cable is pulled the slot varies the light falling on the diode.
A pot with a return spring could be connected to the cable and wired to the throttle input of nearly any controller.
Pity we are so far apart, I gather you're in the UK & I'm in Australia as I've got a shed full of new EVT parts including 2 48v brushed controllers.
If you were local I'd be happy to help you out.

AussieRider

 

[ProtonPozer]

Your scooter is 48V with a brushed motor, 120A. No way it's going to go with 36V.

In [strike]2009[/strike], EVT switched to brushless motors, and a beefier 130A controller. I have an EVT 168 with the brushless motor. I even added a booster battery. Here's my thread, not sure if it helps with your brushed 4000 though:

**correction** it was 2010 when they went brushless. I have a 2010 EVT. Sorry bout that.

My New 2010 EVT-168

These might help:

Owner's Manual:

https://electricscooterparts.com/manuals/EVT-4000e-owners-manual.pdf

Service Manual:

http://bravoelectricvehicles.com/Media/Documents/EVT-4000e_March2009.pdf

But really, 36V, 200W? Look at that motor. If that's 200W, I have a bridge to sell you.

Hey GranolaBoy, seems to me that you are familiar with this Bravo EVT 4000e. I have the same bike as Dean D, but mine is a 2008. The scooter looks identical to his, except mine is a 48VDC version with 4 batteries. I have the same exact controller that he posted an image of. My problem is that it stopped working after a 6 month period where the throttle response kept decreasing. Sometimes it would engage, other times, not. Batteries are fresh, and loaded tested at over 500 CCA's. Think the problem is either in the controller or the throttle module. The service manual suggests that the brake circuit nullifies the motor controller, so I temporarily disconnected the brake switches (at the handlebar compartment) with no change. What would you suggest I check next? Would greatly appreciate hearing from you.

 

[E-HP]

Hey GranolaBoy, seems to me that you are familiar with this Bravo EVT 4000e. I have the same bike as Dean D, but mine is a 2008. The scooter looks identical to his, except mine is a 48VDC version with 4 batteries. I have the same exact controller that he posted an image of. My problem is that it stopped working after a 6 month period where the throttle response kept decreasing. Sometimes it would engage, other times, not. Batteries are fresh, and loaded tested at over 500 CCA's. Think the problem is either in the controller or the throttle module. The service manual suggests that the brake circuit nullifies the motor controller, so I temporarily disconnected the brake switches (at the handlebar compartment) with no change. What would you suggest I check next? Would greatly appreciate hearing from you.

What are the individual voltages of each of the 4 batteries?

 

[AussieRider]

Hey ProtonPozer.
Two obscure, possible causes, easily checked;
1/ How's the free play on the throttle? Too much slack in the cable cuts down response. The adjuster is near the twist grip.
2/ Take out the tail light globe & see if the scooter works. If it does, you've got a bad "earth" ( not really earth coz it's not grounded to chassis ). What happens then is that tail light voltage feeds back through the brake light filament into the controller brake cutout. Clean the light socket out.

 

[pictorul]

Your scooter is 48V with a brushed motor, 120A. No way it's going to go with 36V.

In [strike]2009[/strike], EVT switched to brushless motors, and a beefier 130A controller. I have an EVT 168 with the brushless motor. I even added a booster battery. Here's my thread, not sure if it helps with your brushed 4000 though:

**correction** it was 2010 when they went brushless. I have a 2010 EVT. Sorry bout that.

My New 2010 EVT-168

These might help:

Owner's Manual:

https://electricscooterparts.com/manuals/EVT-4000e-owners-manual.pdf

Service Manual:

http://bravoelectricvehicles.com/Media/Documents/EVT-4000e_March2009.pdf

But really, 36V, 200W? Look at that motor. If that's 200W, I have a bridge to sell you.

hi granolaboy , i want to convert evt 4000e from lipo to lead acid battery , so , inteligent controller have 2 signal wires yellow and blue , what signal or voltage caming on this since the lead battery are conected 4 in series for 48 v. I have first red light and no reaction on throtle... Battery are fully charged

 

[ProtonPozer]

What are the individual voltages of each of the 4 batteries?

Battery VDC CCA
TF (Top Front) 12.84 500
TR (Top Rear) 12.80 525
BF (Bottom Front) 12.78 530
BR (Bottom Rear) 12.81 540

 

[ProtonPozer]

Hey ProtonPozer.
Two obscure, possible causes, easily checked;
1/ How's the free play on the throttle? Too much slack in the cable cuts down response. The adjuster is near the twist grip.
2/ Take out the tail light globe & see if the scooter works. If it does, you've got a bad "earth" ( not really earth coz it's not grounded to chassis ). What happens then is that tail light voltage feeds back through the brake light filament into the controller brake cutout. Clean the light socket out.

AussieRider,
Thanks for giving it some thought... I checked the throttle and there is very little slack in the cable. I also removed the tail light bulb as you suggested. No change with it being removed; the socket is "clean as a whistle." (And the brake light works fine with the actuation of both handlebar levers.

 

[ProtonPozer]

I can tell You know your stuff as it is the one with a spring, small black like return spring.

Finding it hard as hell to find ones of these controllers to just buy on line, like a direct replacement I can just buy and plug to my scooter and go.

so you understand now my throttle handle has a cable coming from it not 3 wires like other electric mopeds have.

So if I buy a controller that I could fit to my moped that don't have throttle pot but instead 3 wires for the trottle, could I then just buy a throttle handle with 3 wires coming from it and get rid of the throttle handle that pulls on a cable?

Hope you understand what I'm saying, my grammer is poor sorry.

Also what wattage amp controller does this moped take as there's no sticker on the controller? Thanks

Dean B: If you have a scooter like the one Dauntless posted, it is like mine. The cable from the throttle goes down to a rheostat-looking device in the compartment above the front wheel. The Rheostat (which I assume it is - rather than a Hall Effects Sensor) that converts that cable's rotary actuation into an electric signal through three wires. (Black/Grey/Orange). Mine doesn't seem to work with a new (after-market, nameless) controller, so I'm going to try to replace the throttle assembly with one that using a Hall Sensor (also with 3-wires). I'll post what I discover.