Toplink Hydraulic side link is too sensitive

Rowski · Mar 14, 2003

Danny

When I talked to V&M about adding a hydraulic multiplier to my rear remote they asked me about adding flow restrictors. After talking to them about it they told me if I knew my flow of my hydraulics (at a particular engine spped) and how fast I wanted to move the cylinder (how long to stoke the cylinder) they could match a flow restictor to what I needed. I haven't done my top & tilt yet but when I do I want them to move pretty slow at near full engine speed.

Mosey · Mar 17, 2003

I checked with Royal Brass in Illinois and they said they have them for $3 each. But, the guy I talked to (Derek) said they only carry one size orifice and he doesn't know the actual size. He said all he knows is that it comes in a small, medium, and large and they only carry the large. They also only come in pipe thread, either 1/2" or 3/8", which means I'd have to get my hoses refitted in order to put the restrictor on the cylinder side. My hoses have 1/2" pipe thread going into the ISO male tip on the tractor side and "nominal 6" (9/16"-16) boss O-ring fittings going into the cylinder.

So, I could get 2 of the 1/2" pipe thread restrictors of unknown orifice size (but probably OK because others have used them and they were satisfied) for $3 each plus shipping, or a total of about $12, and put one in each hose at the tractor side. If it's too slow, I can drill them out until I get the speed I want. If it's still too fast, I've wasted the $12.

Or, I can get 1 of the "nominal 6-6" boss O-ring restrictors with a 30 thousandths orifice here at Columbus Hose and Fittings and put it on the cylinder side of one of the hoses for $15. I doubt 30 thousandths will be too slow, so I can drill it out until I get the speed I want.

This whole Top and Tilt thing has really been a learning experience, and an expensive one at that! The jury is still out on whether it's all worth it.

Mosey · Mar 24, 2003

I ordered 2 of the 1/2" pipe thread restrictors from Royal Brass in Illinois and they came in last week. I looked at the size of the hole it's pretty small, so I thought sure I'd be drilling it out. I called the headquarters in Knoxville, TN and they said it is a 1/32" hole. I installed them yesterday and they are just right! I can easily move the side link just a little. So, I solved the problem for a total of $11.

JimMc - Thanks for clueing me in on this one!

Thanks to everyone else also for ideas and information.

PS: The part number is 8MP-8FPXR and it's called a "Restricted pipe SWVL". It doesn't swivel though, once it's tighteded down it's rigid.

Bird · Mar 24, 2003

That's great. That information should help several people.

JimMc · Mar 24, 2003

It just amazes me how much fluid can go through that small hole when it's under pressure. Just imagine how small a hole it takes to make that annoying drip or even better the seepage on some fittings!

Mosey · Mar 24, 2003

</font><font color="blue" class="small">( that annoying drip or even better the seepage on some fittings!)</font>

I came up with a method to help that. I bought a package of balloons (pick any color, I use black) and cut the last 1/2" or so off the end, so it has a hole at both ends. Then, before I put hook the hydraulic line to the tractor, I put the balloon over it and fold it back out of the way. Then I hook up the line and stretch the balloon back over the fitting. It does a great job of keeping dirt and moisture out of the fitting, and catches any seepage. I'll try to post a picture to make it clear in case this description is not making sense.