Posted by JDEM on May 05, 2016 at 19:55:19 from (70.194.3.23):
This seems like it should be easy, but perhaps not. I've been trying to find a push-button starter-switch for my little Oliver OC-3 crawler. Has a little Hercules IXB3 engine. This still has the original 6 volt electrical system. In the winter, I often disconnect the charging system and put in a 12 volt battery so it will start. It is too sluggish on 6 volts in cold weather and just barely adequate in warm weather.
Here is my confusion. I found out after some voltage-drop testing that most of the problem is loss in the push-button starter switch. I bought a new one and have the SAME problem. Now -after some research - seems every push-button switch I can find is only rated at 100 amps and that is ridiculous. It will work when hooked with 12 volts but not HD enough for 6 volts that needs twice the amperage. Not even close. My 6 volt Delco starter is rated for 60 amps no-load and 500 amps fully loaded. Probably should draw around 200-250 amps during normal cranking @ 4.5 to 5 volts. Yet - I cannot find a push-button switch anywhere rated more then 100 amps. Is nobody making them anymore? 100 amp rated switches sold for a 6 volt system are a rip-off, in my opinion. If that is all there is - no wonder so many convert to 8 or 12 volt systems. If anyone knows where a true HD 6 volt switch is available, please post the info. Even with electric-solenoids for 6 volt systems - so far I'm only finding ones rated for 200 amps max, but at least that's better then the mechanical push-button at 100 amps.
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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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