vas
Well-Known Member
title says it all really (except the specifics of the query)
yanmar motor is ready, fired up, works now on first or second turn of the starter motor.
as discussed in another thread I want to alter the way it operates so it doesnt fire up at 3K rpm straight away and doesn't stop from that rpm either.
Further more the fuel stop solenoid that was a b1tch to bleed the fuel pump is playing up not letting all the time the right amount of fuel through, so it is removed and discarded. Means I need to find a way to stop the thing and I aint gonna use a wire to pull and stop it for sure.
So a new classic mode stop solenoid is around 60-80euro and I'm still left with the rpm up and down to solve.
Now, if I remove the governor stop (or anyway undo it all the way) the engine will stop anyway, so thought of getting a decent linear actuator and kill two birds with one stone, bear with me:
Fully extended governor at 0 point lets say, engine off
Slightly retracted from 0 point governor at around idle or thereabouts, engine starts
After a minute or two, actuator pulls governor to 3K rpm, a relay closes the electrics (ARE mentioned something I have to check when testing regarding where I cut the circuit in the first place) and 220V power is established
On switching off, relay opens, no 220V output, actuator extends to idle position and after a couple of mins extends further turning the thing off.
All easily accomplished with an arduino board and a few bits I already have.
Now what I'm missing is the linear actuator.
Used a fish weight measuring thing my late father had somewhere in the garage (must be 40+ yo...) to establish the power of the governor spring, it's around 6kg so say 60N, and since I don't like things working on their limits, I'd like a 200-250N linear actuator
Travel with be around 30mm maybe 35, so say 50mm or 2inch travel.
These two properties are reasonably easy to find and fairly cheap for a 12V setup, china 30-50quid
HOWEVER what these dont have is a feedback sensor aka a potentiometer giving a Ohm output which the PLC or arduino would read to know where exactly the thing is.
I'd really really like to avoid getting yet another rudder sensor and stick it in (btw the rudder sensor working to tell me when gbox is engaged in FWD or REV is working fine...) so I'm after:
A linear actuator with:
50mm (2inch) travel (could accept more, just will be cumbersome to fit on the side of the yanmar, and pointless)
200-250N (could do more but rather pointless...)
12V
slowish speed (say under 30mm/s-preferably less)
and feedback potentiometer (aka not a 2wire actuator but probably a 5 wire one)
any pointers welcomed!
BTW, LINAK don't do such small things (or I'm missing completely the plot and happy to be corrected)
yanmar motor is ready, fired up, works now on first or second turn of the starter motor.
as discussed in another thread I want to alter the way it operates so it doesnt fire up at 3K rpm straight away and doesn't stop from that rpm either.
Further more the fuel stop solenoid that was a b1tch to bleed the fuel pump is playing up not letting all the time the right amount of fuel through, so it is removed and discarded. Means I need to find a way to stop the thing and I aint gonna use a wire to pull and stop it for sure.
So a new classic mode stop solenoid is around 60-80euro and I'm still left with the rpm up and down to solve.
Now, if I remove the governor stop (or anyway undo it all the way) the engine will stop anyway, so thought of getting a decent linear actuator and kill two birds with one stone, bear with me:
Fully extended governor at 0 point lets say, engine off
Slightly retracted from 0 point governor at around idle or thereabouts, engine starts
After a minute or two, actuator pulls governor to 3K rpm, a relay closes the electrics (ARE mentioned something I have to check when testing regarding where I cut the circuit in the first place) and 220V power is established
On switching off, relay opens, no 220V output, actuator extends to idle position and after a couple of mins extends further turning the thing off.
All easily accomplished with an arduino board and a few bits I already have.
Now what I'm missing is the linear actuator.
Used a fish weight measuring thing my late father had somewhere in the garage (must be 40+ yo...) to establish the power of the governor spring, it's around 6kg so say 60N, and since I don't like things working on their limits, I'd like a 200-250N linear actuator
Travel with be around 30mm maybe 35, so say 50mm or 2inch travel.
These two properties are reasonably easy to find and fairly cheap for a 12V setup, china 30-50quid
HOWEVER what these dont have is a feedback sensor aka a potentiometer giving a Ohm output which the PLC or arduino would read to know where exactly the thing is.
I'd really really like to avoid getting yet another rudder sensor and stick it in (btw the rudder sensor working to tell me when gbox is engaged in FWD or REV is working fine...) so I'm after:
A linear actuator with:
50mm (2inch) travel (could accept more, just will be cumbersome to fit on the side of the yanmar, and pointless)
200-250N (could do more but rather pointless...)
12V
slowish speed (say under 30mm/s-preferably less)
and feedback potentiometer (aka not a 2wire actuator but probably a 5 wire one)
any pointers welcomed!
BTW, LINAK don't do such small things (or I'm missing completely the plot and happy to be corrected)
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