I got a super deal on a Heinzman 24v rear hub motor and the deal included a battery that was still in transit from China. When the battery arrived, it was 36v 10ah. Am I hosed or can a resistor or governor be put in the circuit to deliver 24v. I've read that some motors can run with higher voltage. Will the motor run at 36v without burning out?
Heinzmann 24v motor w/ 36v battery?
- Thread starter wallybaby
- Start date
dnmun
1 PW
don't worry about using the 36V lead with a 24V motor since the lead will be at 28-30V all the time you are using it anyway.
using a 36V lifepo4 pack continuously will overheat these motors from what dogman says. but i would do that too.
so it will be ok to use the SLA pack. keep them charged and recharge immediately when using including hauling your charger with you and opportunity charging at every electrical outlet you see. the charger should charge them up to 44V and you should carry a long extension cord along with the charger so you can reach way behind the wall to the electric plug when you opportunity charge. charging constantly is the only way to keep them alive. try to find the two wire cords and find ones that are 25' if you can, or two 18' long can help a lot.
if you live in new mexico or arizona the motor will overheat. maybe.
using a 36V lifepo4 pack continuously will overheat these motors from what dogman says. but i would do that too.
so it will be ok to use the SLA pack. keep them charged and recharge immediately when using including hauling your charger with you and opportunity charging at every electrical outlet you see. the charger should charge them up to 44V and you should carry a long extension cord along with the charger so you can reach way behind the wall to the electric plug when you opportunity charge. charging constantly is the only way to keep them alive. try to find the two wire cords and find ones that are 25' if you can, or two 18' long can help a lot.
if you live in new mexico or arizona the motor will overheat. maybe.
>>don't worry about using the 36V lead with a 24V motor since the lead will be at 28-30V all the time you are using it anyway.
The 36v controller I've ordered has the following specs:
Rated Voltage 36 Volts
Rated For Motors Up To 500 Watts
Maximum Current 25 Amps
Rated For Chargers Up To 3 Amps
Conversion Efficiency 95%
Under Voltage Protection 31 Volts
The battery is a LifePO4 battery pack
The Heinzmann motor has the following specs:
> h: 154/min
rpm at 24V and 30A
> P: 400W
the rated power (maximum power is 24Vx30A=720W)
> U: 24V
Voltage (pretty sure you can go up to 36V, but then power, torque and rpm go up as well.)
> Betreisbsart S 2
> 18 min
S2: running at a constant 500W, it shouldn't overheat before 18min are over
> RL 26/19
No idea... could be the internal gear ratio, number of armature coils, or so
> Mmax: 35Nm
Maximum torque
> Imax: 30A
Maximum allowed current
> In: 22A
Nominal current for S2 (22Ax24V=528W)
With the motor's max current at 22A and the controller at 25A, is that going to cause a problem? Is there some way to use a resistor to get the controller amps down a bit?
>>so it will be ok to use the SLA pack. keep them charged and recharge immediately when using including hauling your charger with you and opportunity charging at every electrical outlet you see. the charger should charge them up to 44V and you should carry a long extension cord along with the charger so you can reach way behind the wall to the electric plug when you opportunity charge. charging constantly is the only way to keep them alive. try to find the two wire cords and find ones that are 25' if you can, or two 18' long can help a lot.
Now I'm confused. The battery is an liFePO pack and you are giving instructions for an SLA pack. I planned to carry the charger and an extension cord.
>>if you live in new mexico or arizona the motor will overheat. maybe.[/quote]
Can a Heinzmann hub be drilled for better cooling?
The 36v controller I've ordered has the following specs:
Rated Voltage 36 Volts
Rated For Motors Up To 500 Watts
Maximum Current 25 Amps
Rated For Chargers Up To 3 Amps
Conversion Efficiency 95%
Under Voltage Protection 31 Volts
The battery is a LifePO4 battery pack
The Heinzmann motor has the following specs:
> h: 154/min
rpm at 24V and 30A
> P: 400W
the rated power (maximum power is 24Vx30A=720W)
> U: 24V
Voltage (pretty sure you can go up to 36V, but then power, torque and rpm go up as well.)
> Betreisbsart S 2
> 18 min
S2: running at a constant 500W, it shouldn't overheat before 18min are over
> RL 26/19
No idea... could be the internal gear ratio, number of armature coils, or so
> Mmax: 35Nm
Maximum torque
> Imax: 30A
Maximum allowed current
> In: 22A
Nominal current for S2 (22Ax24V=528W)
With the motor's max current at 22A and the controller at 25A, is that going to cause a problem? Is there some way to use a resistor to get the controller amps down a bit?
>>so it will be ok to use the SLA pack. keep them charged and recharge immediately when using including hauling your charger with you and opportunity charging at every electrical outlet you see. the charger should charge them up to 44V and you should carry a long extension cord along with the charger so you can reach way behind the wall to the electric plug when you opportunity charge. charging constantly is the only way to keep them alive. try to find the two wire cords and find ones that are 25' if you can, or two 18' long can help a lot.
Now I'm confused. The battery is an liFePO pack and you are giving instructions for an SLA pack. I planned to carry the charger and an extension cord.
>>if you live in new mexico or arizona the motor will overheat. maybe.[/quote]
Can a Heinzmann hub be drilled for better cooling?
dogman dan
1 PW
If your 24v heinzmann is like the ones I had, it will have 4 wires coming from the hub. Two big wires are the power in. Two small wires go to your ignition switch wire on the controller.
The small wires have a thermal sensor, so the circuit goes like this, from your battery+ add a second small wire. This goes to one of the small wires to the hub. The other wire to the small hub goes to your small red + wire on the controller. If you like, you can add an ignition switch to that circuit too.
Then when the motor starts to overheat, it will shut itself off.
Drilling to cool motors with gears inside no good. It lets dirt into the gears.
It will be fine on 36v, if you use that temp switch in the motor. If you don't, then you need to put a thermometer into the motor, or onto the axle, so you have some idea when the motor is hot, and when it's getting hot too fast.
The small wires have a thermal sensor, so the circuit goes like this, from your battery+ add a second small wire. This goes to one of the small wires to the hub. The other wire to the small hub goes to your small red + wire on the controller. If you like, you can add an ignition switch to that circuit too.
Then when the motor starts to overheat, it will shut itself off.
Drilling to cool motors with gears inside no good. It lets dirt into the gears.
It will be fine on 36v, if you use that temp switch in the motor. If you don't, then you need to put a thermometer into the motor, or onto the axle, so you have some idea when the motor is hot, and when it's getting hot too fast.
dnmun
1 PW
the other big problem with the heinzmann is how the drive gear on the motor will start slipping and then the motor is dead until you take it apart and glue the gear back onto the shaft with bearing retainer.
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