I am a dumptruck driver. Most trucks have an electric motor that rolls/unrolls the tarp,like a convertable top on a car. I found a 12V gearmotor to retrofit my truck from a hand crank. What i need to know is 2 things, what is an easy / inexpensive way to make the motor forward and reverse, and how do i tell the motor to stop at the end of it's stroke and turn off? I'll be happy to provide more details if needed
Thanks,
Shaun
Thanks KarTuneMan..
For a Tarp on a Big Dump Truck, you need a Big motor.
Usually something like a Wench Motor.
I deal with Electric Hose Reels that have a Wench Type Motor with a Chain drive.
These are expensive Motors.
With a hose reel they pull the hose out manually and just push a button and hold it in until the hose is all rolled up then you release the button.
This involves a push switch and a relay. You could simplify this with a push switch for starting a car. These are Heavy duty enough to operate the motor without a relay.
I will see if I can find pictures for you when I have more time.
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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
Thanks, 1 of our other trucks has a motorized tarp rack. if you flip the switch 1 way the tarp unrolls, flip the switch the other way, it rolls up. but without tearing the whole thing apart... i can't figure out how it works
You could buy it already made.
https://www.harpstarps.com/electricwindupsystems.php
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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
we can offer the 12 VDC worm gear motor for truck's electric tarping systems. The gear ratios are avaialble in 60: 1 and 90:1.
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