60 Volt help

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Gumby
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60 Volt help

My first post so be kind.

My ride is a daymak Austin (XB-600)
I have seen the posting for the 60 volt mod and was hoping the following idea would work.
Under the seat of my ride is like this

bike_seat__Custom_.jpg

Would it be possible to add a 12 volt source before the breaker?

----wire----(+12volt-)--breaker---

I would have to trace the leads to figure out what lead comes from the battery and check the polarity.
If it's wired +to+ (more amp hours) would this mess things royally? m
High school electricity class was a long time ago. :) should have payed attention more.

Any help would be great.

win32forth
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Re: 60 Volt help

Ok, first, you should be able to put an extra 12 volt battery in series with the existing 48 volt string of batteries. However, you don't want to wire it plus to plus, that will just reduce the total voltage to 36 volts (48-12=36). What you want to do is connect the - side of the battery to the + side of the extra 12 volt battery, and the - side of the extra battery to the breaker. That will result in 60 volts (48+12=60). As several people on this forum have found, the standard XB-600 controller seems to be able to handle 60 volts without too much difficulty. It does get warmer than the stock configuration, but it still seems to work ok. Of course you are on your own if it blows up. You take the risk, you pay the price. I am very happy with my XB-600 with the shunt mod, and the 60 volt mod. It climbs my minor hills well, and goes almost 30 mph. I never heard of a Day Mark Austin, so I have no idea if your controller will handle 60 volts or not. Oh, yes, don't forget that you also need a 60 volt charger. That will run you another 50 to 100 dollars. Also, be sure to use the same kind of battery that is already in your scooter, the XB-600 has 20 amp batteries, so my extra battery is 20 amp. If yours is different, then you need to buy the same kind of battery as you have. Having the batteries the same rating, assures that they will charge evenly and that they will discharge evenly.

Tom

Gumby
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Re: 60 Volt help

That was what I was thinking. I wouldn't run 60V all the time. I would like to be able to add the extra volts for weekend fun and take the batteries out for charging. The range would be limited to the amp hour rating of the smallest of the batteries? The pack I have is rated at 14amp hours or so.
The daymak I ride appears to be an XB-600, it has a 500 watt motor and I think the controller is marked as such. I'm sure it the same as the ones marked 600w. Next month it's to be stored for the winter soon, so if I'm going to cook a controller now wouldn't be so bad.

The peddles are attached and I dont ride like an idiot, so I hope the "man" wont notice I'm going faster then the law allows. :)

Thanks for the reply and I'll post results this weekend.

dp
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Re: 60 Volt help

Ok, first, you should be able to put an extra 12 volt battery in series with the existing 48 volt string of batteries. However, you don't want to wire it plus to plus, that will just reduce the total voltage to 36 volts (48-12=36). What you want to do is connect the - side of the battery to the + side of the extra 12 volt battery, and the - side of the extra battery to the breaker. That will result in 60 volts (48+12=60)

Could you figure this out by just trying it both ways and seeing if the scooter went faster (60 volts) or slower (36 volts) or could you cause damage by hooking it up in the 36 volt configuration for a short time?

win32forth
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Re: 60 Volt help

Well, it probably wouldn't hurt anything to hook it up backwards as long as you don't leave it that way for more than a few minutes to test it, but it might be better to go to Radio Shack and buy a multi-meter so you can measure it, rather than guessing.

Tom

dp
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Re: 60 Volt help

I should know in 5 seconds. I will just check the spedometer while on its stand.

dp
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Re: 60 Volt help

First way would not work. I reversed the wires and bingo...the spedometer is 12 km/h faster. After that I road tested and it was great

Very easy mod...I just needed an extra 8 inch peice of wire to loop back into the circut breaker. The whole process took 10 minutes.

garygid
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Re: 60 Volt help

Is the new battery the same size as the originals?
How about a picture?

Maybe replace all batteries (if they are old) with larger capacity for greater range?

If the police get you, it could be expensive.

Cheers, Gary
XM-5000Li, wired for cell voltage measuring and logging.

dp
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Re: 60 Volt help

I put in another batery of the same size. The existing ones are still quite good. The bike isn't a Daymark, it just has that similar breaker configuration. The bike came with a push button governor, which should keep it under the legal limit. I drive in downtown traffic so you would be amazed at how often I am going under 20 mph in a traffic jam. I mostly wanted some extra power for those occasions when a car seems trying to push me off the road because I am not as fast as they are. They won't slow down and won't give me enough room. Sometimes it can be a bit scary.

zerogas
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Re: 60 Volt help

Nice! Do the shunt mod and acceleration is improved too!

Keep the rubber side down and the shiny side up.

Cruisin
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Re: 60 Volt help

For not too much money, you would be better off replacing the controller with a 72v version that can provide up to 48amp. The current controller running 60v and with a shunt mod is a disaster waiting for you to be in the wrong place at the right time. They are NOT designed for providing the extra amperage at 60v and its only a matter of time. Most will want to go to a 1500w motor, then you will have to change it for sure. I have customers tell me horror stories all the time. Additionaly, the adding of a 72v DC-DC to 12v converter will prevent the 48v original from blowing up and taking out your batteries if the breaker doesnt trip. I have seen this happen at least 2 times. And as I mentioned, it will always happen in the wrong place at the right time. If you need any help of info on this, feel free to email me at cruisin [at] live.com. I have over 10 years designing electric vehicles and enjoy helping others with this hobby.

reikiman
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Re: 60 Volt help

For not too much money, you would be better off replacing the controller with a 72v version that can provide up to 48amp. The current controller running 60v and with a shunt mod is a disaster waiting for you to be in the wrong place at the right time. They are NOT designed for providing the extra amperage at 60v and its only a matter of time. Most will want to go to a 1500w motor, then you will have to change it for sure. I have customers tell me horror stories all the time. Additionaly, the adding of a 72v DC-DC to 12v converter will prevent the 48v original from blowing up and taking out your batteries if the breaker doesnt trip. I have seen this happen at least 2 times. And as I mentioned, it will always happen in the wrong place at the right time. If you need any help of info on this, feel free to email me at cruisin [at] live.com. I have over 10 years designing electric vehicles and enjoy helping others with this hobby.

Well, we've had many people on this site use the shunt mod and it seems they've been happy with the results.

But what you say is a form of "more is a slippery slope".

The desire for "more" never ends, does it? Pretty soon you'll "more" yourself into a hummer maybe. On the other hand why buy one of these scooter bikes when you can spend just a few more bucks and have a faster bike to begin with.

- David Herron, The Long Tail Pipe, davidherron.com, 7gen.com, What is Reiki
- Electrified Electra To

sixpax2k9
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Re: 60 Volt help

For not too much money, you would be better off replacing the controller with a 72v version that can provide up to 48amp. The current controller running 60v and with a shunt mod is a disaster waiting for you to be in the wrong place at the right time. They are NOT designed for providing the extra amperage at 60v and its only a matter of time. Most will want to go to a 1500w motor, then you will have to change it for sure. I have customers tell me horror stories all the time. Additionaly, the adding of a 72v DC-DC to 12v converter will prevent the 48v original from blowing up and taking out your batteries if the breaker doesnt trip. I have seen this happen at least 2 times. And as I mentioned, it will always happen in the wrong place at the right time. If you need any help of info on this, feel free to email me at cruisin [at] live.com. I have over 10 years designing electric vehicles and enjoy helping others with this hobby.

What you consider not too much money and what others consider it to be is probably a lot different.
I dont think most of the people here are looking to buy and install a completely new controller and converter, not to mention installing a new hub motor. Am I very far off thinking the 1500W motor is at least $300, controller $150, converter $75...???

you can prevent damage to the dc-dc converter with just a $10 relay, and unless you use a VERY conductive and SHORT metal for the shunt mod, these controllers and motors have shown to be very capable of handling the extra current. If I am not mistaken, there are a couple people here who have went to 72V and shunt mod with the whole xb-600 completely stock equipment otherwise.

Dave ; Tennessee
XB-600.

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