QUESTION 48v to 60v upgrade

[new2thiss]

Okay Im new here, Ive been reading obsessively on this site so I have a pretty good understanding of the game so far.. couple newb-ish questions however and sorry in advanced if they're already answered or just plain dumb.

I currently have an e scooter, not a small scooter, like a motorcycle scooter thingy.. Its currently got lead acid batteries connected in series (4 x 12 /20ah) and some random crappy chinese controller and a 500 W motor.

Pretty sure Im already running the motor over what it should be because its giving out about 800W in its current setup but anyways. I am upgrading to a 60v lifepo4 20 /ah lithium battery monday.

I also intend on getting a kelly controller, this one specifically:
http://kellycontroller.com/kbs72051x25a24-72v-mini-brushless-dc-controller-p-505.html

And a motor from kelly as well :
http://kellycontroller.com/hub-motor-60v-15kwdisc-brake-p-157.html

First question..
My lightbulbs are 48v.. will this setup cause them to blow? Usually bulbs are 12v or 48v And I know a 12v usually runs on its own line so I guess I assume a 48v runs same as the battery?

second question
My current rear wheel reads 16 by 3.0.. so How many inches does my hub need to be? Kelly site shows 10 inch, and 13 inch

Third question
I've had issues in the past with switching the rear motor with tire attached with the axle coming out being too short to screw the bolts on properly.. how can I make sure its going to be long enough?

The reason for this upgrade is to have a removable battery and overall battery performance (lead acid is torture and ancient) and a moderate speed enhancement.

thank you for your help I just want to make sure its right and it'd suck for my order to arrive and be incorrect parts ! Lol.

 

[Kevin1963]

Hi
In answer to your questions

1. On your bike at the moment with it being 48 v it will have a voltage reducer ie reducing 48 v down to 12 v for your lights indicators etc , when you up grade to 60 v you would need to replace the voltage reducer with a 60 v down to 12 v , not a big issue and not too expensive, it's usually a small silver box 75 x 100 x 40 thick hidden away somewhere just look around the bike and when you find it the label will say 48 v 12 v.

2. Regarding your rear wheel the only thing for certain is that the back wheel must be the same size as the front wheel minimum by law , but it can be bigger than the front wheel so just measure the front wheel and go from there.

3. Your back swing axle if un suitable for your new motor is held in by one long bolt , removing this bolt will release your back swing axle but be careful as other items maybe attached like your suspension spring , so if your swing axle needs modifying to suit your new wheel / motor it is possible to make a new one .

Hope all the above has helped you

Kevin

 

[new2thiss]

Hey thanks for your response. I my have confused my bulb voltage. My bike requires 56v bulbs. There is no converter. Also the wheel thing I'm talking about is basically the arms that come out on left and right to screw the wheel to the framw. Youre saying I could remove the one from my old wheel and use it on the new wheel if the new wheel is too short?

Thanks for your help kevin

 

[Kevin1963]

What's the make of your bike it may help me to help you more.
You say your bulb is 56 v are you sure it's not 56 watts ?
And are you sure it's not got a voltage reducer because as far as I know bulbs are rated in volts and watts and I'm sure your lights will run off 12 v which will have being reduced down from your 48 v battery pack via a voltage reducer to 12 v , this 12 v feed is fed to your indicators headlamp / brake lights and speedo lighting , if you have a multi meter check the voltage at the socket where you bulb plugs in.
The swing axle is indeed the two bars that your wheel connects too, but I thought that the new wheel you where thinking of fitting would not fit the new existing frame and would need modifications to it but rather than mod the swing axle it would be best to make a new one unless the alterations are minor.

Thanks kevin