 | | Motorized pneumatics —Nathan Bell
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| | | I haven't posted in this forum since 2008 and haven't built much, but upon looking at the new 8043 Excavator set at Toy's R'Us, it became apparent that although the new linear actuators dramatically simplify the process, they are not the only (...) (14 years ago, 10-Aug-10, to lugnet.technic)
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| | | | | Re: Motorized pneumatics —Jetro de Chateau
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| | | | | (...) Hi Nathan, I really like your solution. I've seen a number of automated vales, but almost all had the drawback that they could generate considerable stall load on the motor. This solution appears to be much more efficient. Jetro (14 years ago, 11-Aug-10, to lugnet.technic)
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| | | | | | | Re: Motorized pneumatics —Manfred Moolhuysen
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| | | | | | Hello Nathan, Is there a technical reason you use a chain link between the motor and the differential grear? Would it be unsave to engage the gears directly in this case? With friendly greetings, M. Moolhuysen. (14 years ago, 11-Aug-10, to lugnet.technic)
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| | | | | | | | Re: Motorized pneumatics —Nathan Bell
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| | | | | | | The chain is not necessary. It was just a quick way of hooking the motor to the differential. There is sometimes a delay in the system because the pump is such a small load even when the valve is closed. One way around this is to give the output (...) (14 years ago, 11-Aug-10, to lugnet.technic)
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| | | | | | | | Re: Motorized pneumatics —Nathan Bell
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| | | | | | The chain is not necessary. It was a quick way to hook the motor to the differential. There is sometimes a delay in the system because the pump is such a small load (even when the valve is completely closed). To avoid this delay, add mechanical (...) (14 years ago, 11-Aug-10, to lugnet.technic)
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| | | | | Re: Motorized pneumatics —Kevin L. Clague
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| | | | (...) Hi Nathan, Don't you love differentials? Smart gearboxes..... I invented the same pneumatic switch/compressor solution years ago, and its great! As you pointed out, how fast the switch flips all depends on how hard it is to pump the pump. (...) (14 years ago, 14-Aug-10, to lugnet.technic)
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| | | | | | Re: Motorized pneumatics —Nathan Bell
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| | | | (...) I guess great minds think alike! Yeah it works well so far. Right now I'm building my own version of the new excavator with that same system. The thing to remember is to make sure the axles going to the switch can turn freely. I'll post some (...) (14 years ago, 14-Aug-10, to lugnet.technic)
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