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Old 04-25-2012, 10:09 AM
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Default Question for the hydraulic folks

I have a question concerning putting 2 small hydraulic cylinders on my weed wiper and using the hydraulics on the RTV 900 WS model to raise and lower the wiper. I would be putting one of these small 11" retracted , 14" extended, cylinders on each side of the wiper. Then I would plumb them together and run a T to the rear of the RTV and hook them into the quick disconnect there. That is where the hyd dump cylinder is connected and I would just disconnect it and quick connect the wiper cylinders there. Do ya'll see a problem with this? My Dad was a hyd specialist but I never paid much attention unfortunately. Right now, the wiper has to be adjusted manually every time the grass height changes. I must turn a bolt on each threaded shaft . It is then held in place by gravity. I need those cylinders- found at surplus center, for less than 90 a piece. Thank you for any suggestions., bordercollie
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Old 04-25-2012, 02:21 PM
clueless clueless is offline
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shouldnt have any issues,the initial install of the double acting cylinders with the amount of fluid you will need to add,after that should tn have any issues. i dont think!!
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Old 04-25-2012, 07:56 PM
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Thank you Clueless. I was hoping that would be the case. I am going to post some pictures of what I am dealing with. It's not a heavy wiper but really frustrating to constantly have to manually adjust the height when crossing over good grass to get to the smut grass . I was also told that the connectors for the quick disconnect were Kubota only fittings. bordercollie
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Old 04-25-2012, 08:12 PM
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The hydraulic fittings are Kubota only.

I hung a front blade off of a JD compact utility tractor (4000 series, i think) on my 1100 and haven't had a problem other than needing air shocks to keep the front end geometry level. I actually put to extra hydraulic spools on the rtv.

You probably can get a set of male fittings for a $25 bill & a pair of female ends is double.

Part #'s: 7J612-66323 (female); 7J612-66222 (male).
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Old 04-25-2012, 09:29 PM
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Quote:
Originally Posted by nelly View Post
The hydraulic fittings are Kubota only.

I hung a front blade off of a JD compact utility tractor (4000 series, i think) on my 1100 and haven't had a problem other than needing air shocks to keep the front end geometry level. I actually put to extra hydraulic spools on the rtv.

You probably can get a set of male fittings for a $25 bill & a pair of female ends is double.

Part #'s: 7J612-66323 (female); 7J612-66222 (male).
Thank you Nelly. That is good to know. I plan on getting this all together asap. I need to wipe that smut grass before the dry weather starts. bordercollie
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Old 04-26-2012, 02:36 PM
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not to get off the subject but i like to learn about all kindsa stuff and i would like to know what does that wiper thing do? does it cut the tall grass and leave the short one ?or does it pull out a certain type of grass?
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Old 04-26-2012, 03:40 PM
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BC,

Just to toss out an option.

Have you considered an electrical actuator? You then run a wire to the RTV instead of hoses.
http://www.northerntool.com/shop/too...3243_200333243

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Old 04-26-2012, 06:44 PM
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i think the electrical one would be the way to go depending on how much you have to operate it .if you run that hydraulics alot it will just heat up that much faster.
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Old 04-26-2012, 07:10 PM
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Thank ya'll for the suggestions. I sure like the electric one but will need to see if I can find it to adjust to the length I need and it must be stable in between lengths when the pastures are rough. I need 10 1/2" closed and a max of 14 1/2 " open with varying heights in between.
Peanut, The wiper had a 12 1/2 gallon tank which you put round up in . I mix 2 1/2 gallons round up to 10 gallons water. Then the 12 v pump on the tank is activated with a thumb switch when needed, it dampens the astro turf covered roller through jets up and down the roller . They are under the shield and visible only when the shield is removed. Then, a rubber strip laps on the roller ,front and back, and helps form a lather with the soap or foam that is added to the tank when you begin moving. It has a belt between the tires and roller. I go over the bad grass and leave a deposit of round up on it. The high % of round up kills most what ever it gets on ,so you want to avoid getting it on the good grass. I can see paths in the fields where I missed rolling weeds last year- The smut grass is hard to kill otherwise and will take over a field. Valpar can be sprayed , but it takes about 30 gallons of water per acre and the valpar will kill trees even when sprayed well away because it will travel underground by rain. I wont use it. Wiping is my only hope. It is only a matter of time before the smut grass will seem tame compared to the also imported very evil cogon grass. It is in a lot of the south already. bordercollie
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Old 04-27-2012, 01:43 AM
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Bordercollie, One problem you might have with the electric actuators is bending them. I have a factory one on my Grasshopper 725 with a front mount mower to raise and lower the deck. When the mower is in operation you "lock" the actuator rod to the "cylinder" with slide in mechanical shims at the height that you want the deck to ride (it's easier and better than it sounds). Grasshopper warns that the actuator rod can get bent if you run the deck into something without "shimming" it. I also have an actuator for the dump feature on my electric BadBoy MTV(built by the mower company, not the buggy company) . Both actuators are precise and work fine for their intended purposes with the flip of a switch.

Having been in the same industry as your dad I can tell you that nothing is a tough as a well designed hydraulic system. Sometime it takes a bit of tweaking to get them right.

I was interested to find out that the RTV900 dump quick connect fitttings are Kubota only. I just bought a hydraulic hand held pole limb lopper and I was planning on using the dump outlets since the lopper has a relatively tiny cylinder and the use will be basically part time sporadic.
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Old 04-27-2012, 02:28 AM
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wouldnt worry about overheating oil,there should be enough time to cool it down,plus length of hose will add to the cooling of the oil..

if you wish, put a cooler inline to the tank off the valve,..
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Old 04-27-2012, 09:45 AM
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Thank you Doggman and Clueless . I was concerned about the force that would be on the electric ones and it would be an unforgiving,jarring one at that. There are a lot of sink holes and ruts in the pastures. The xtr does have the added hyd cooler under the seat. It is positioned in front of the engine fan but has no protection since it is built like a shroudless radiator At least it is there and I think I will benefit from it now . Doggman, among other hyd stuff, my Dad built hyd steering systems for push boats down in the inland waterways of La and off shore. That goes to show ,I should have learned more from him and watched him more. I believe I will order the cylinders later today and get going on my newest project. These cylinders are 1500 psi and DA . http://www.surpluscenter.com/item.as...item=9-1649-04 I am also lookig at a 3000 psi but I can't seem to locate the pressure of the hyd on the RTV.I may go with the 3000psi and be safe.
I posted a couple of pictures of the smut grass and goat weed. In one picture , you can just make out the smut grass I missed on the first wiping weeks before -it is just in front of my bumper. The other picture is of the path I made through goat weed a few weeks before to see what it would do. Thanks to everyone for their input. bordercollie
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Last edited by bordercollie; 04-27-2012 at 10:00 AM.
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Old 04-27-2012, 11:47 AM
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Just found this older comment when I came in stating that the RTv is 2000 psi. http://www.nettractortalk.com/forums...ad.php?t=13445
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Old 04-27-2012, 02:51 PM
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thanks for explaining that now i know what it does. after reading a few of the reviews on that electrical lift it seems it's not to good in the rain nor is it to good if not used for a period of time so it might not be a good choice for your use . does the rtv have any type of hydraulic oil tempature gauge? if not it might be a good idea to try to mount one it to keep an eye on you oil and how hot it gets .like every oil if it is heated up to a certain temp to much it will go bad and won't do it's job and end up wearing out pumps and rams.
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Old 04-27-2012, 08:52 PM
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Thank you for the concern Peanut. No, it doesn't have a temperature gauge on the hydraulics. That is a good idea to have one on it, and I need to check on that bordercollie
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Old 04-28-2012, 04:20 AM
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if you change the oil per service interval,you shouldnt have any issues.if you even just change the oil every 200 hrs,you shouldnt have any issues.for how much weight the cylinders should have to push, there shouldnt be much heat buildup.
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Old 04-28-2012, 10:01 AM
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I ordered the 3000 psi cylinders last night. I change the hyd oil at the suggested intervals and the second time around will be today on the new XTR model .It is still light amber colored when I have changed it in the past and ya'll know I use that thing. Including filters, it cost right at a $100 for the hyd change as a diy. I will keep everyone informed when I get it going as far as the weed wiper and cylinders. Thanks, bordercollie
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Old 02-03-2013, 09:40 AM
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I need to clarify that I added a cooler to the hydraulic part of the RTV xt. I realized that the extra cooler under the seat is for the transmission. I did another thread on that last year and forgot to post an update here. --old age setting in I guess...

edit: http://www.nettractortalk.com/forums...c+cooler+added
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Old 02-03-2013, 04:25 PM
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bordercollie, I too have that very weed wiper you have and use it in rough pasture ground as you do and this calls for variable height control. I have limestone croppings too clear in the knob pastures. My main thought is that the cyl will not maintain the same height side to side unless running in full up/down position. I have seen ag implements such as old a.c. planters that have the cyl connected in series side to side. These arrangements require special sizing of cyl/rod ratios to give same lift each side with oil going from left to right and vice-vs. Good luck, let's know. ROGER
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Old 02-03-2013, 10:01 PM
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Quote:
Originally Posted by rogerw View Post
bordercollie, I too have that very weed wiper you have and use it in rough pasture ground as you do and this calls for variable height control. I have limestone croppings too clear in the knob pastures. My main thought is that the cyl will not maintain the same height side to side unless running in full up/down position. I have seen ag implements such as old a.c. planters that have the cyl connected in series side to side. These arrangements require special sizing of cyl/rod ratios to give same lift each side with oil going from left to right and vice-vs. Good luck, let's know. ROGER
Hi Roger. I have had good luck... The cylinders I put on are two stroke and have worked fine. I ran hoses from each cylinder port to meet a "T" in the center of the wiper. One T for the top ports and one T for the bottom ports. At the" T" bottom where the 2 sides came together, I ran a single hose to each control at the aux for the dump bed cylinder. After I got the air out of the lines and ran it up and down a few times all things are equal. It works like the cylinders on a front end loader. I did have to get the air out though . I was praying heavy though as I wasn't so sure for a while. I was grateful it all worked out. I have gotten the hoses all neat since this picture was taken but can't find the better pictures right now. I added a piece of angle to mount the hoses to and my SMV emblem also... much better now.
Using it for smut grass is really hard and discouraging because the Round up has to be very strong and the good grass short to where you can wipe the crown.. It does a good job on goat weed and things that allow good coverage and a decent amount of surface to absorb the chemical. I think johnson grass would be an easy kill because of the broad blade. I went by the chemical store last August and got a 30 gallon barrel of Round up - its like getting 5 gallons free instead of buying by the case at the same price.. bordercollie
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