4200xl Hydraulics slow?
 

Well guys my 4200XL turned up. I have filled it with oil with all the hydraulic cylinders at minimum reach but the hydraulics are very slow to me? I checked the motor speed on the transmitter and its running a 23% which is what seems to be the norm but i cant get the hydraulics to move faster. Anyone know how to adjust them?
Cheers Chris

Re: 4200xl Hydraulics slow?
 

I don't have a 4200xl, but 23% seems a bit low to me, that's only 1/4 pump speed, try turning it up and see what happens.
Stu

Re: 4200xl Hydraulics slow?
 

Tried that Stuart but it does not effect the Hydraulic ram speed at all. And i have been told by 2 owners that say theirs is set to 23% so that is the standard.

Re: 4200xl Hydraulics slow?
 

hmm, not sure then, if turning the pump speed up makes no difference then the oil is not getting to the rams for some reason, doesn't the 4200 have a 4th valve which acts as a bypass?
maybe someone will chime in who owns one.

Re: 4200xl Hydraulics slow?
 

Have you got all the air out of the system?

Re: 4200xl Hydraulics slow?
 

dont mess with pump speed... or u will get too much pressure.
the 4th valve is a bypass valve yes... it should be mixed so it closes when other valves open.
did u check servo travel, maybe they dont open all the way?

Re: 4200xl Hydraulics slow?
 

Also go into radio settings and look at the display screen and see if your sticks are moving the valves to 100 percent open.

Re: 4200xl Hydraulics slow?
 

Yeah i put the pump speed straight back matey. I had a play with the travel too and it does not seem to help? Its been like it since i received it at the beginning of the week.

Re: 4200xl Hydraulics slow?
 

and if i wanted to do 3 actions at once.. Bucket , dipper and main boom i have no chance.

Re: 4200xl Hydraulics slow?
 

weird... there must be some obstruction of oil flow somewhere.

Re: 4200xl Hydraulics slow?
 

if u look through this post there are some good pictures of the hydraulic setup, i used it for reference a few times.... maybe something is connected wrong

http://www.rctruckandconstruction.co...ght=great+dane


this one got some good info on tx setup...

http://www.rctruckandconstruction.co...ghlight=4200xl

Re: 4200xl Hydraulics slow?
 

As Andy mentioned in his thread, he found a switch on the transmitter not knowing what it was for that slowed down his hyds... Mixing Channels switch. Is yours on or off?

You can trace the plumbing to figure out which is the bypass valve (4th valve) & make sure it's turning when you activate 1 or all 3 hyd functions. The pump doesn't need to be on when you're doing this & without the noise of the pump you can hear what servos are working.

Increasing motor speed does not increase pressure, it increases flow. This motor/pump combo is way too big already for this system & increasing motor speed would just make the motor work harder drawing higher amperage from the esc & burn out the esc! Being china electronics, it could even catch fire! no joke.

Re: 4200xl Hydraulics slow?
 

Yeah there is a switch on the transmitter that when i switch it off the hydraulics hardly move at all.

Re: 4200xl Hydraulics slow?
 

is it the 3 way mix swich?

Re: 4200xl Hydraulics slow?
 

Cheers. I will go through all the TX settings when i get home from work..
And something else i would like to add is that the motor does drop in rpm quiet a bit when im operating the hydraulics?

Re: 4200xl Hydraulics slow?
 

Aux/ Mix / F mode switch

Re: 4200xl Hydraulics slow?
 

sounds to me like it could be the bypass valve... maybe it dont close when u open the other valves. it should be the valve closest to the tank

Re: 4200xl Hydraulics slow?
 

Cheers thats something else i can look at.. Anything else it could be? It does seem to get a little faster when it gets warmer... Could it be something to do with the pressure relief valve? How should that be set? Or could it be something to do with the tank vent valve?

Re: 4200xl Hydraulics slow?
 

all i can think of is maybe check if the servos and valves were sentered when they was mounted..
especially the bypass valve in this case. if not then check the mixing setup for it.
or maybe reversing the servo...
if bypass valve dont close when u open another valve it would give u half the speed right?

warm oil just gets abit thinner, dont it? then a little faster..

Re: 4200xl Hydraulics slow?
 

Also check the radio. There is a little switch on the right. It will shut off 4th valve and give you very slow movements. It is a 3 position switch make sure it is all the way foward.

Re: 4200xl Hydraulics slow?
 

Yeah that's the mix switch and I have that set to N... gone through all the transmitter settings and they are all fine by the looks of it..

Re: 4200xl Hydraulics slow?
 

Ok I have found it seems to get quicker after one battery So it looks like when the oil is getting warmer? The oil I was supplied is a 32 grade so I'm thinking it's to thick?

Re: 4200xl Hydraulics slow?
 

i use 32 grade oil in mine, but its the version 1 without the bypass valve and i have a diffrent motor and esc installed. however im pretty sure the ver. 1,5 also use 32 oil.

is it by any chance really cold where u are using it?
i dont think they are suposed to be used in really cold temperatures...
i have used mine in the snow a couple of times and with the
motor and esc i use it doesnt heat up, so it really start to struggle after a while.

Re: 4200xl Hydraulics slow?
 

No not cold at all really?

Re: 4200xl Hydraulics slow?
 

Hi Chris,

I found you can set it up a few ways;
The way I did it was turn the screw on the pressure relief valve all the way in. Then use the dial on the radio to adjust the constant pressure, which will be only about half way. Mix off on radio with this way. (the toggle switch on right move to lower position) I like this set up as I can tweak the function speed/power on the fly.

Second was is to open the pressure dial up..screw it out then mix is "on" (toggle flip up)and turn dial all the way up on the radio (it controls the 4th servo/valve on hydraulic block)

For even more tips on mixing radio functions and just about everything else you will find the guys on this forum really know their stuff and you will get the right answers to almost any question :)

Hope that helps!


Tom

Re: 4200xl Hydraulics slow?
 

You probably checked this but (I didn't :) make sure it has "enough" hydraulic oil in the tank!

Re: 4200xl Hydraulics slow?
 

What dial on the radio are you talking about Buddy?

Re: 4200xl Hydraulics slow?
 

I filled the tank with all the hydraulics retracted. Is this correct?

Re: 4200xl Hydraulics slow?
 

When all is empty.. add oil until the functions are all working fine.. at this point the tank should be about half full.

The dial is the one on the left/ front of the radio. Controls 4th valve and is channel 8 slot on my receiver.

cheers,

Tom

Re: 4200xl Hydraulics slow?
 

lololol... I never even played with that one.

Re: 4200xl Hydraulics slow?
 

Bet if you play with those few things it will work!
I like mix off and adjusting pressure from radio but lots of ways
to set it up!

Re: 4200xl Hydraulics slow?
 

Ok that dial has no effect what so ever on my transmitter?

Re: 4200xl Hydraulics slow?
 

I would make sure all electrical connections are plugged in. 4th valve servo is channel 8 on my receiver. When radio and machine is turned on and the pump is off see if that dial moves the servo on the block (or rather listen if you hear it move) On mine the pressure valve is screwed all the way in and this dial then adjusts the pressure with the mix toggle on the right in the down position.

Beyond that it could be the servo or a bunch of other things to track down and trouble shoot? Martin "DiggingwithMartin" on you tube does a lot of repair work for guys who own these and is super nice!

Also lots of guys on this forum who have super in depth knowledge about radios and everything else.. and who are also super helpful!

Re: 4200xl Hydraulics slow?
 

how much speed would u say its lacking?
and how much faster does it get when it warms up?
on tx... if u go in to settings then prog.mix and look at mixes that are active,
are uprate set to 100 and dnrate to -100 ?

Re: 4200xl Hydraulics slow?
 

Well when I went to use it this morning and it was a little cool in the room it barely moved at all? All the mixes are either 100 or -100

Re: 4200xl Hydraulics slow?
 

im running out of ideas on this one...

tx settings are all good
servos are centered with the valves
4th valve will close as the others open
it should air itself out...

could it need more oil? i use the texaco rando hdz 32 hydraulic oil..
does it leak much?

some gunk clogging hoses or valveblock?
motor/esc problem?
pump?

maybe you could post some pictures of hydraulic block and the setup.. or video also of operation.

Re: 4200xl Hydraulics slow?
 

From what I've read, you filled the oil tank once when you started & that's it... is that correct?

The cyls are double acting - oil on both sides of cyl piston, one tank fill is not enough oil for the system to function.

Re: 4200xl Hydraulics slow?
 

Was the air bled out of the lines??????????????????????????

Re: 4200xl Hydraulics slow?
 

Well I have kept a eye on the oil level and kept topping it up. I have no leaks.. and how do I bleed the lines?

Re: 4200xl Hydraulics slow?
 

You only need about half a tank full when operating. I would make sure
that 4th valve is moving via the radio. You should able to hear it move
with pump off via that black dial. Even if you use the mix later, if you screw that Allen nut on the black pressure relief valve and 4th servo is working, the dial on radio should speed up and slow down functions. (Mix off/ down position on right toggle switch for this scenario)