Is there such a thing?

M

my80chevette

New Member
I would like to find a tachometer for my golf cart so I can keep an eye on my stock motor's RPM's. I am planning to add extra batteries to my pack and don't want to push the motor too hard. Is there such a thing out there? I have searched the net but just find industrial applications. Help!!
 
HotRodCarts

HotRodCarts

Cartaholic
DC Power Systems made a controller you could plug a 4 cylinder tach into. They're out of business now though and I haven't seen any other controller with that feature. It would be nice...
 
JRay

JRay

Cartaholic
Why would that make anyone mad
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If they have one for sale i would take a serious look at it.
 
M

my80chevette

New Member
I was kinda hoping that someone on here would know where to find one of these. Geesh.... I can't believe that no place offers a tach for electric motors. I guess the idea of someone over reving a electric motor hasn't occured to anyone in the industry. Maybe we should get ahold of somebody and see how hard it would be to get some made?
 
A

ACEGOLFCARTGUY

Cartaholic
All my ventures to different ev websites and I don't remember having come across a tach for electric motors. Over revving an electric motor is a concern especially when running higher voltage.
 
JRay

JRay

Cartaholic
I have never ran across one either. But i would certainly buy 2 for ny carts. if anyone out there knows of a source we would like the info.
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GarageBuilt

GarageBuilt

Well-Known Member
It's just a matter of time before the speedometer & tach is available for DC systems. Curtis makes the controllers for the AC systems. A single gage can tell you rpm- mph- volts- run time-& more.
 
gornoman

gornoman

Well-Known Member
I looked at that one Ace, and I don't see a way to implement it on a golf cart. There is no exposed motor shaft to attach the magnets to on these carts. Our carts have the electric motors coupled directly to the differential. It might work in an EV application however.

Unless the sending unit can detect the spinning armature inside the motor casing???.......
 
HotRodCarts

HotRodCarts

Cartaholic
You could drill the motor housing and mount the magnets to the coupler on the inside of the case. Then mount the sensor in the hole you drill in the case. I'm not sure how the motor dust would effect it though.

Nice find Ace, thanks for posting the link...
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F

fabbinman

New Member
you can get tachs that sensor off of an add on magnet and sensor. This is what was done on many early diesels<no distributer or plug wires>. either way it will take some addapting unless you find one specificly for your machine.
happy hunting
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R

rmhj

New Member
Just use a simple amp meter (not an idiot light) to protect your electric motor. I don't believe the motor would be the weakest link. It has a thermal switch. The controller on the other hand defiantly won't take a jolt for any length of time in over current, therefore probably also has current limit or over current built in.
 
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