Now I see what Spider needs.
A hill. 
I donāt think the switches are under engineered, just over priced.
Have there been many failures?
Someone in the past may have flipped the switch under load.
Also some switches that look like breakers have a fusable link inside as a redundant safety feature.
The dash disconnect is nice. More readily accessible.
Remember the one youāre replacing has a 10,000 amp ic @ 80 volts.
About 280 at 60 volts. About 22 HP or at 80% 18 HP at the wheels.
This is with me alone in the cart on flat ground.
In my opinion these puppyās should be standard issue on modified carts. More so for you guys in the hills.
[quote=OLD HOUSEBOATER;29767]About 280 at 60 volts. About 22 HP or at 80% 18 HP at the wheels.
This is with me alone in the cart on flat ground.
In my opinion these puppyās should be standard issue on modified carts. More so for you guys in the hills.[/quote]
Those numbers make me question even more the capacity of the disconnect switch when you are pulling almost three times its rating. I do not consider the switch smoking hot to be a āsafetyā feature. The switch Iām going to use is rated at 300 continuous, 500 intermittent and 900 peak. I am of the opinion the fuse is supposed to be what goes when things are out of control but having appropriately rated equipment in the circuit will only improve safety and efficiency.
[quote=OLD HOUSEBOATER;29767]About 280 at 60 volts. About 22 HP or at 80% 18 HP at the wheels.
This is with me alone in the cart on flat ground.
In my opinion these puppyās should be standard issue on modified carts. More so for you guys in the hills.[/quote]
Could we get by with 294 amp maximum reading?
Higher is off scale.
[quote=Inwo;29800]Could we get by with 294 amp maximum reading?
Higher is off scale.[/quote]
Is that the max reading for the model you got? I would think that would be fine for 99% of the time? I mean the fuse is going to pop at 300 anyways?
Thatās without modification.
200 amp model.
The only issue then would be keeping the shunt cool. Not insurmountable.
The other easy option is make it read 1/2. That is good enough for me. Not too pretty, but until someone finds a higher amp model? The wireless part is very attractive to me.
[quote=Inwo;29802]Thatās without modification.
200 amp model.
The only issue then would be keeping the shunt cool. Not insurmountable.
The other easy option is make it read 1/2. That is good enough for me. Not too pretty, but until someone finds a higher amp model? The wireless part is very attractive to me.[/quote]
you know what if we took the output and ran it through like an RPi2/3 to do the calculations and display it out correctly? I was thinking about this the other night with an embedded controller doing corrections would not be all that hard to do.
Take away from KISS.
Put shunt in circuit and connect 1 wire to +72.
Thatās it.
The other wires are my data logger.
It wonāt be long before someone upgrades it.
Out for a ride to see how hot the shunt gets.
Scratch that, why donāt we just build our own dam wireless shunt??? Stay tuned I might have this solution already sitting on my deskā¦
[quote=Inwo;29808]Take away from KISS.
Put shunt in circuit and connect 1 wire to +72.
Thatās it.
The other wires are my data logger.
It wonāt be long before someone upgrades it.
Out for a ride to see how hot the shunt gets.[/quote]
would not be hard to add a heat sync to it if this works out, but you and I should talk about my other idea, might take all of these gadgets and turn it into one boxā¦
Shunt heat is a non issue. Its a chunk of metal and has insignificant resistance. You guys are looking for a pimple on an ants ass. Common get serious.
Perfect as-is.
Unless your a hot rodder.
Went up my hill 20mph and didnāt go over 200 amps.
Shunt is cold to the touch.
How many times will you need to know if itās 300 amps or 320?
Monitoring from in the house now. 20ā away. :D:clap2:
No set-up needed. Connect 1 wire and a 9v battery to display.
Dave ,
quit playing with this and get your lithium hooked up ! iām dying to know the results .
Iām easily sidetracked.
Hi Inwo
are that 3w on standby ?
DC/DC draws 50 mA it near 3w
Yes, seems right.
To some degree (no punn intended) I agree but if he was getting it really hot it puts heat stress on the battery terminal which can lead to problems with the battery itself as you have the weight hanging off the terminal; I have seen this in UPS systems and it takes a $$$ battery and makes it a core chargeā¦
Heās right in this case. In electronics we have to deal with ant pimples all the time.
Yet 15-25 watts of heat is something. 75mv @200-350 amps.
I should have stock in this company.
If it continues to perform, there is no reason for anyone not to use one.
Very very easy install.
Think Iāll order a dozen before the price goes up.
[quote=Inwo;29819]I should have stock in this company.
If it continues to perform, there is no reason for anyone not to use one.
Very very easy install.
Think Iāll order a dozen before the price goes up.[/quote]
where are you getting these from? or are you going to be a dealer for them?