External steering rams?
03-16-2011 | 12:12 AM
#11
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Joined: Oct 2006
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From: Bradenton Florida
You are correct.....when turning. But I thought he was talking about raising and lowering the drives, not turning left and right. When you lower the drive and BOTH cylinders compress at the same time then rod side/non rod side does have play a role. right? I use hydraulics everyday am I missing something?
A quick sketch, hold your applause for my Paint CAD skills
A quick sketch, hold your applause for my Paint CAD skills
come on dude !!
........its called reservior !!!!
why do you think you should not fill it up all the way, jsut like your trimpumps ??!!!! DAAAAAHHHHH
always mount your rams in the centerline of your trim pin ( swiffel point ) on the drive,,,mount them so one is full extened and the other is all the way in at hard left !!!! then check before drilling if the same is happening at the hard right position and you have a winner !!!
Last edited by DareDevil; 03-16-2011 at 12:16 AM.
03-16-2011 | 04:30 PM
#12
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Joined: Mar 2011
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First... Thanks for all the replys ..!!!..
Today I removed the outdrive and put back the engine in first to take a break on the steering...
Still.. the rams wont sync.... they are x plumbed for the steering but when lifting the drive and both or at least one ram extends there is no ballance..!
The amount of oil coming out on the rod side(s) when the rod(s) are pulled out is way less than the amount needed on the other x ed cylinder behind the piston due to the fact that on the back of the piston there is no rod! (unbalanced cylinders)
Either way there is a vacuum when moving up.. or moving down there is over-pressure in the lines as the oil cant flow back and for through the steering pump (wouldnt be good). A pressure relieve valve would kick open at 1000 but think of the stress on the gimbalrings upper bearing (auch!!)
I also drawn some... I calculated a 1:2 unbalance factor for the cylinders. The top dia is when only one cylinder would extend and the other slaves... the below is when they both extend. ( dont know how to attach tho??)
I almost give up but then...you guys have it working so there must be a way..
Today I removed the outdrive and put back the engine in first to take a break on the steering...
Still.. the rams wont sync.... they are x plumbed for the steering but when lifting the drive and both or at least one ram extends there is no ballance..!
The amount of oil coming out on the rod side(s) when the rod(s) are pulled out is way less than the amount needed on the other x ed cylinder behind the piston due to the fact that on the back of the piston there is no rod! (unbalanced cylinders)
Either way there is a vacuum when moving up.. or moving down there is over-pressure in the lines as the oil cant flow back and for through the steering pump (wouldnt be good). A pressure relieve valve would kick open at 1000 but think of the stress on the gimbalrings upper bearing (auch!!)
I also drawn some... I calculated a 1:2 unbalance factor for the cylinders. The top dia is when only one cylinder would extend and the other slaves... the below is when they both extend. ( dont know how to attach tho??)
I almost give up but then...you guys have it working so there must be a way..
Last edited by Frankm; 03-16-2011 at 04:45 PM.
03-16-2011 | 04:37 PM
#13
Banned
Joined: Oct 2006
Posts: 5,844
Likes: 0
From: Bradenton Florida
First... Thanks for all the replys ..!!!..
Today I removed the outdrive and put back the engine in first to take a break on the steering...
Still.. the rams wont sync.... they are x plumbed for the steering but when lifting the drive and both or at least one ram extends there is no ballance..!
The amount of oil coming out on the rod side(s) when the rod(s) are pulled out is way less than the amount needed on the other x ed cylinder behind the piston due to the fact that on the back of the piston there is no rod! (unbalanced cylinders)
Either way there is a vacuum when moving up.. or moving down there is over-pressure in the lines as the oil cant flow back and for through the steering pump (wouldnt be good). A pressure relieve valve would kick open at 1000 but think of the stress on the gimbalrings upper bearing (auch!!)
I also drawn some... I calculated a 1:2 unbalance factor for the cylinders. The top dia is when only one cylinder would extend and the other slaves... the below is when they both extend. ( dont know how to attach tho??)
I almost give up but then...you guys have it working so there must be a way..
Today I removed the outdrive and put back the engine in first to take a break on the steering...
Still.. the rams wont sync.... they are x plumbed for the steering but when lifting the drive and both or at least one ram extends there is no ballance..!
The amount of oil coming out on the rod side(s) when the rod(s) are pulled out is way less than the amount needed on the other x ed cylinder behind the piston due to the fact that on the back of the piston there is no rod! (unbalanced cylinders)
Either way there is a vacuum when moving up.. or moving down there is over-pressure in the lines as the oil cant flow back and for through the steering pump (wouldnt be good). A pressure relieve valve would kick open at 1000 but think of the stress on the gimbalrings upper bearing (auch!!)
I also drawn some... I calculated a 1:2 unbalance factor for the cylinders. The top dia is when only one cylinder would extend and the other slaves... the below is when they both extend. ( dont know how to attach tho??)
I almost give up but then...you guys have it working so there must be a way..
IT WORKS..and its a balanced system at all times because in is out and out is in on the rams !!!
THIS IS FUNNY THO !
