EVT 168 - Is it possible to de-restrict?

Hi
I am not sure myself apart from hearing about a 60volt conversion,if they do I wouldnt mind trying it!!.
I have a EVT 168 myself and even though the speedo shows 32mph on the flat its actually doing 27-28 mph on my gps.
The speed is not good but the range isnt bad for me for work commute at 17 miles round trip and it only just gets to shout to flicker once on to the yellow LED for a split second on a hill near me near the end of my journey.
I wouldnt mind sacrificing some range for a few extra mph to be honest tho :)

The EVT 4000 and the 168 are both 48v/1500watt motors. I don't think they can go any faster. Check with Nova Scooters. They have an upgrade to 60V/3500watt.

NOVA Scooters Commuter 3500 Motor Controller Kit

look at this discusstion
http://visforvoltage.org/forum-topic/motorcycles-and-large-scooters/757-evt-60-volt-mod
scroll down until you see
60v mod for EVT 168
about 2/3 of the way through

Also look at:
http://visforvoltage.org/forum-topic/motorcycles-and-large-scooters/514-evt-asian-controller

And at:
http://visforvoltage.org/forum-topic/control-systems/840-new-custom-evt-4000-controller

The EVT 4000 and the 168 are both 48v/1500watt motors.

Those motors have been successfully run at 72 volts and higher, despite being rated at 48v. The links smace posted will be including details.

Thanks for the info,very helpfull.
Is it me or are half the pictures not showing on that 60volt link in the forums?
Also I just found out electric motorsport dont do that conversion anymore as it kept shortening the life of the motors
If anyone has done this do they have any detailed piccies so that I can see what I can do a bit better,being a bit of a novice I dont want to bugger it up :p
Thanks

Can anyone see the pictures please?

Hi Wilfy

I can see the pictures on my PC ok. The ones from Craig's posts are missing, but I think they were removed on purpose. There's some pictures of the 60v conversion on a 168 near the bottom of that thread.

I've had no problems with overheating so far at 60v...
(The bike has done around 4000kms, although only a few hundred of those have been at 60v, but so far so good.)
The extra speed makes the bike much better for my commute on a busy road. Didn't notice much difference in the range, but the batteries are past their best anyway.

Hi Dermutt
Thanks for your reply.
You have an EVT168,so did you fit it yourself then?
I cannot see what exactly I need to get mine converted apart from obviously cables and a battery,but where do I need to connect it to and how do I know its the right wire ?
The pictures I can see are a little out of focus but I am not sure if and how its fused,how it is controlled(i.e is it 60volts all the time even on power/economy mode ) etc etc.
Appreciate your reply
Kind Rgds

Wilfy - yes, I did the conversion on my bike, so you can be sure its not too difficult!

Having read about Crusher's success with this mod, I got hold of the wiring harness from Patrick at Electric Motorsport. Well made and not expensive. You could try contacting him via this site to see if he'd be willing to make you one up. Remember to mention that its for a 168, as depending on where you decide to put the extra battery you'll probably need longer wires than for a 4000e conversion.

The wiring harness connects the 5th battery in series with the original four. There are no extra fuses. 60v is fed direct to the power circuits of the controller. A single smaller wire taps off 48v for everything else - lights, battery meter and so on. The motor runs at 60v in both power and economy modes. The difference is that economy mode is now faster than power mode was at 48v :)

Crusher's detailed posts in the 60v thread show exactly how the conversion is done and how it works. There's no difference between the 168 and 4000e in terms of the motor and controller.

The only real difficulty is where to put the extra battery on a 168. I put it between the frame tubes with the top sticking up through the footboard, which works fine. Smaller batteries might fit in the original battery space, but at the expense of range. I just keep imaging how much better it would go with lithiums instead of 80kg of lead...

Patrick mentioned keeping an eye on the motor temperature, especially on hills. No problems so far with my bike, but that might just be luck. Having said that, I think Crusher said his bike was still performing well too, some months after converting it. Something to be aware of and keep an eye on, though.

If you decide to go for it, I'm sure you'll be pleased with the performance increase!

Ok I figured it out after a while and decided to take the gamble on the dreaded smoke or not.
So far so good,no smoke,I only used a 17.2AH battery as a test and didnt load it up with me on it,just a full throttle excercise sitting on its stand.
I now just need a battery of the same size and AH (anyone in the UK know where I can get one from?) and a charger.

Next question is charging.

How do I charge the 5 batteries up,I presume I scrap teh original charger and go for a 60v setup?
Or do I seperately charge the extra battery?

Also need some help as to where I can source in the UK and what is the best cost/performance charger(I dont want to spend an arm and a leg on the charger unless it makes the tea for me too :D )
Thanks in advance

Nice one Wilfy!
Have you tried it on the road yet - how does it perform?

Regarding batteries, there are suppliers in the UK who will sell you an equivalent 12v 50Ah sealed battery. Its worth shopping around, but there don't seem to be many bargains at the moment.

As for chargers, there's been a lot on here about the benefits of using individual chargers for each battery - a better option than using a 60v charger. (If you do go the 60v route, you really need to get some kind of battery balancing system, like the BattEQ or Powercheqs.)

But if you are happy with your present charger set up, the easiest and cheapest thing to do is to keep your existing charger and buy an extra 12v charger for the new battery. 12v SLA chargers are pretty easy to find and cheap. However, make sure that the charger's output is not earthed, else you'll get a short circuit if you use both chargers at the same time without disconnecting the new battery from the bike first.

I havent tried it out yet on the road as it was merely a test on the 17 Ah battery but I think it should be fine !!
I am just trying to source a battery so I can make it permanent on the bike but was worried about the charging aspect of it all.
The only thing I had done different was that I didnt cut the red wire that feeds the 48 volt to 12 volt dropper but I did remove it from the connector and tape up the feed wire,then I plugged the dropper directly into the 48v tap so I am happy with that :)

What speeds have you encountered on yours as mine on GPS is showing 23 and 28 mph as standard :(

New to the forum with what is probably an exceedingly simple question (to you, not to me)...
My EVT 168 caught fire while charging, (short, bad connection). Both plug ends were a nasty melted lump so I could not see how the charger was wired into the 5-prong plug,

The Chroma charger that comes with the scooter has six wires (2 white labeled "24V", 2 black labeled "12V" and two green labeled "gnd"). There are five wires on the scooter's battery array (red, yellow, blue, black, each connected to the + of each battery, and green connected to the - of the last (rearmost) battery in the series. How are the two sets of wires (scooter end and charger end) connected?

I get that green=ground and the charger's two gnd wires are twisted into one for a total of five wires. I can't figure the four 12V/24V black/white thing.

I have replaced the scooter's charging port with a marine-grade five prong male end, and I am looking for info for how to wire the charger to the female end.

EVT Canada and the local dealer just shrugged when I asked.

Would greatly appreciate any help.
Claudia Lorenz
Vancouver Island, BC Canada

New to the forum with what is probably an exceedingly simple question (to you, not to me)...
My EVT 168 caught fire while charging, (short, bad connection). Both plug ends were a nasty melted lump so I could not see how the charger was wired into the 5-prong plug,

The Chroma charger that comes with the scooter has six wires (2 white labeled "24V", 2 black labeled "12V" and two green labeled "gnd"). There are five wires on the scooter's battery array (red, yellow, blue, black, each connected to the + of each battery, and green connected to the - of the last (rearmost) battery in the series. How are the two sets of wires (scooter end and charger end) connected?

I get that green=ground and the charger's two gnd wires are twisted into one for a total of five wires. I can't figure the four 12V/24V black/white thing.

I have replaced the scooter's charging port with a marine-grade five prong male end, and I am looking for info for how to wire the charger to the female end.

EVT Canada and the local dealer just shrugged when I asked.

Would greatly appreciate any help.
Claudia Lorenz
Vancouver Island, BC Canada

-------Scooter--------|-----Charger-------------
Gnd......Black......Pin5......0v.....Green
Batt1+...Blue..........4.....12v.....Black
Batt2+...Yellow........3.....24v.....White Green
Batt3+...Green.........2.....36v...........Black
Batt4+...Red...........1.....48v...........White

Hope that makes sense.

Amanda