Posted by MarkB_MI on July 08, 2018 at 12:16:43 from (174.230.6.120):
In Reply to: Re: Electric DC Motors posted by vicinalvictor on July 08, 2018 at 09:33:21:
> Perhaps if I change the driven gear to a much larger one than what I am using now, would slow everything down more, thus reducing the current flow (amps) needed at start-up.
Yes, if the motor is turning faster for a given ground speed it will draw less current, because it has to produce less torque. (The torque is gained by the gearing.) As for start-up current, the initial current draw will be about the same regardless of the gearing, but the current drops with rpm, so the quicker acceleration offered by the lower gearing means the current will drop sooner. (The faster a DC motor turns, the less current it draws, and at "no-load" rpm the current draw is almost zero.)
As for "slow-blow" fuses, consider using the "MAXI" series automotive blade fuses. They can handle a 100 percent overload for about ten seconds. However, they are only rated for 32 volts. I'm wondering if you really need fuses in the circuit; fuses normally serve to protect the wiring; if the wiring is heavy enough, fuses really aren't required. For example, automotive starter cables are never fused.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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