Junkman
Super Member
Mike...... Do you need to hold a Master Plumbers degree to know where all those lines go and to install them properly????? /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif
Converting manual snowblower chute to hydraulic
- Thread starter PineRidge
- Start date
- Views: 15667
OP
PineRidge
Super Member
Well Junk my wife must think I'm a Master Plumber cause she keeps handing me the toilet plunger. /forums/images/graemlins/tongue.gif
JDFANATIC
Veteran Member
PineRidge,
Not taking anything away from your ingenuity, but the chute on my JD blower operates off of a hydraulically operated cylinder that actuates a cable by its action that is wrapped around the chute. It requires two couplers and since I use it on the front of my tractor, it uses the side-to-side detents on the loader joystick. If anyone is interested, I can post some pics. That said, this has got to be one of the handiest things to have while blowing snow. /forums/images/graemlins/tongue.gif
Not taking anything away from your ingenuity, but the chute on my JD blower operates off of a hydraulically operated cylinder that actuates a cable by its action that is wrapped around the chute. It requires two couplers and since I use it on the front of my tractor, it uses the side-to-side detents on the loader joystick. If anyone is interested, I can post some pics. That said, this has got to be one of the handiest things to have while blowing snow. /forums/images/graemlins/tongue.gif
OP
PineRidge
Super Member
ALL ideas are welcome. /forums/images/graemlins/grin.gif
Pks
Platinum Member
- Joined
- Apr 6, 2000
- Messages
- 773
- Location
- Saline, Michigan
- Tractor
- Kubota L3700SU, Cub Cadet 1430, Hustler Super-Z 66in, Vermeer 1250
For what it might be worth:
One thing to pay attention to is how the flow controls are configured with relation to system pressure going into the motor and the flow and pressure (or lack there of) leaving the motor.
When controlling motors with flow controls, control the flow going into the motor. This is known as upstream flow control. That way if your pump can supply 20 GPM, the flow control that is upstream of the motor will act as a limit to the oil entering the motor and reduce the flow to say 5 GPM. Thus slowing the motor's operation. The key here is that the oil entering the motor is limited.
If the flow control limits how fast (GPM) the oil leaves the motor, a pressure backup will exist at the output port and within various motor seals. This output port back pressure will damage most motors. If that pressure is not carefully monitored or if you don't know what the motor can handle, then the motor may (most likely according to some texts I've read recently) become damaged.
One thing to pay attention to is how the flow controls are configured with relation to system pressure going into the motor and the flow and pressure (or lack there of) leaving the motor.
When controlling motors with flow controls, control the flow going into the motor. This is known as upstream flow control. That way if your pump can supply 20 GPM, the flow control that is upstream of the motor will act as a limit to the oil entering the motor and reduce the flow to say 5 GPM. Thus slowing the motor's operation. The key here is that the oil entering the motor is limited.
If the flow control limits how fast (GPM) the oil leaves the motor, a pressure backup will exist at the output port and within various motor seals. This output port back pressure will damage most motors. If that pressure is not carefully monitored or if you don't know what the motor can handle, then the motor may (most likely according to some texts I've read recently) become damaged.
kennyd
Advertiser
Peter,
Your explanation makes perfect sense, however, in theory could only be applied to a motor that is only going to turn one way. Mike's setup needs the motor to turn both ways, so the pressure and return are always changing.
I can understand that if a motor was running all day like you described how damage could be done, but with the intermitent use this motor will see I can't see where there will be a problem.
Your explanation makes perfect sense, however, in theory could only be applied to a motor that is only going to turn one way. Mike's setup needs the motor to turn both ways, so the pressure and return are always changing.
I can understand that if a motor was running all day like you described how damage could be done, but with the intermitent use this motor will see I can't see where there will be a problem.
OP
PineRidge
Super Member
<font color="blue">If the flow control limits how fast (GPM) the oil leaves the motor, a pressure backup will exist at the output port and within various motor seals. This output port back pressure will damage most motors. If that pressure is not carefully monitored or if you don't know what the motor can handle, then the motor may (most likely according to some texts I've read recently) become damaged.
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Peter the reason we used the flow control valves that we chose were that each valve only limits the flow in one direction only, that is toward the motor itself. The hydraulic oil leaving the motor lifts the check in the other flow control valve so that there is no restriction on the return leg of the motor whatsoever. It's always as though there is only one flow control valve on the inlet side of the motor regardless of which way that it is needing to turn. It's a very basic hydraulic circuit.
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Peter the reason we used the flow control valves that we chose were that each valve only limits the flow in one direction only, that is toward the motor itself. The hydraulic oil leaving the motor lifts the check in the other flow control valve so that there is no restriction on the return leg of the motor whatsoever. It's always as though there is only one flow control valve on the inlet side of the motor regardless of which way that it is needing to turn. It's a very basic hydraulic circuit.