r97
Measure twice cut once
if you have choice between a golf cart motor, and a scooter motor, golf cart hands down.
Electric Barstool Racer
- Thread starter j.concepcion54321
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j.concepcion54321
Rebuilding KTM, Need Kart
this has to be a low cost build so new motors and controllers are out of the question. could i try to get a shaft machined that fits into the motor and weld a sprocket onto that?? also how could i hook up drill batteries to run the motor on. harbor freight sells these 18volt dril batteries that are like 15 bucks each and 20 bucks with the chargers. i was planning on just picking up 2 of those and wire them up to put 36 volts to the motor. anyone have any ideas on how i can do this??
j.concepcion54321
Rebuilding KTM, Need Kart
this is a link to the bateries i was mentioning http://www.harborfreight.com/18-vol...-782A-E011-B31E-001B2163195C&mr:referralID=NA
I thought you said you alraedy have a 24v motor and 4 12v batteries already?
those 18v batteries from HF are 1.3AH....they will last 2-3mins max
the 12v scooter batteries are usually 7-12AH so you can see how thats a big difference.
do you not have the controller from the scooter you took apart?
j.concepcion54321
Rebuilding KTM, Need Kart
i have the motor controller which is covered in rust and im not sure if works, i have the 24volt scooter motor, the 4 12 volt batteries. which i also do not know if work because i dont have a charger for them and they have been sitting outside, and i have the powerchair motor. would it be a good idea to make the frame out of pvc pipe? or could i just use some 1 inch pipe with some 90degree elbows and such to hold it together. ( No welder)
devino246
Official DIYGK Chem Nerd
That wont work at all. PVC is way too flexible. Using threaded pipe & fittings wont work either, they'll just loosen.
j.concepcion54321
Rebuilding KTM, Need Kart
would wood work?
j.concepcion54321
Rebuilding KTM, Need Kart
ok so ive decided that im gonna go with wood.
j.concepcion54321
Rebuilding KTM, Need Kart
abandoning this project for now because i want to get some work done on my kart.
scooterman675
New member
has any one mention to you, you could use car batteries. they woudl last a long time, but take while to charge but the long run time makes up for that
j.concepcion54321
Rebuilding KTM, Need Kart
are car batteries heavy? arent they like 50.00 also?? could i get some used ones for like 20.00 maybe??
j.concepcion54321
Rebuilding KTM, Need Kart
well im concerned about weight bcause im not sure if the little scooter motor can handle it
j.concepcion54321
Rebuilding KTM, Need Kart
so i shouldnt go with car batteries??
Doc Sprocket
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Car batteries are quite heavy, but can be had cheaply. I would suggest two safety tips. One, enclose the batteries in a box that will spare you from acid injury in the event of an accident. Two, open the battery boxes and charge batteries in a well-ventilated are. Lead-acid car batteries release hydrogen gas while charging.
scooterman675
New member
dude just because there 'sealed" doesnt mean that they wont bust open in a crash. and even if they were "sealed" i would still want to put a nice strong steal box around them, just incase. and are you that lazy to "cover/open" box each time. what 2 small clips it that hard?
Doc Sprocket
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Bingo. "Sealed" means "maintenance free", being that there are no removeable caps to add electrolyte. There are still vents in the case. The acid is still very liquid, the enclosure is still equally susceptible to damage. If you insist on using a liquid lead-acid battery, Fabricate a battery box that will hold the battery firmly in position and contain the acid in a crash. Put a very small vent hole in it near the bottom. Open the box when charging, as lead acid batteries produce hydrogen gas while charging.
Edit- I'd have to find the pics, but FWIW, I used a gel cell, enclosed in a military surplus ammunition can. Bombproof, and as safe as it gets.
scooterman675
New member
ya i know you don't want the batterie bouncing around
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