Attacking that power problem CT225

[sparkyaber]

spyder, that is a good idea, made me think, well does this tractor go 13.1 mph? specs says it should, and if you or anybody you know has a gps, that will give you speed to the tenth of an mph. Should also be a sign if things are not correct.

 

[bbse]

In High i can't get past 2500 rpm so I will have to check the specs to see if the 13.1 MPH listed is for 2500 or 3000 rpm. In mid range it is a very fast walk I would say, not a run, maybe 4-5 mph wide open with the pedal down. I do stall out on the hills but if you don't go but a little to half way you can keep the RPM's up. On the tire spinning, low range and I now have loaded tires but it wouldn't do it before I loaded them either so I'm not cutting them any slack on that.

 

[dex3361]

In High i can't get past 2500 rpm so I will have to check the specs to see if the 13.1 MPH listed is for 2500 or 3000 rpm. In mid range it is a very fast walk I would say, not a run, maybe 4-5 mph wide open with the pedal down. I do stall out on the hills but if you don't go but a little to half way you can keep the RPM's up. On the tire spinning, low range and I now have loaded tires but it wouldn't do it before I loaded them either so I'm not cutting them any slack on that.

It may be a good idea to get a cheap photo sensor tach and check if the tractor tach is correct. This may help in dealing with the power issue.
Something like this.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?function=Search

 

[bbse]

I am not going to spend a dime on this. I have already been put out enough. I was finally contacted by a salesman after I called the third time today, he is supposed to bring another tractor out Monday and we can compare.

 

[SPYDERLK]

I may be, how steep a hill should I be able to climb in mid range with the loader and scraper attached? The thing that bugs me is that if I stop(or come to a stop is more like it) on a hill in mid range, I can apply light pedal pressure and keep the RPM's up but I cannot get the tractor to move. I can push down on the hydro pedal and start to stall it, by feathering I can get down on the pedal pretty good and keep my RPM's up to but I cannot get moving. Likewise, on solid grass covered ground in low range, 3000 rpm, barely pushing the pedal with the loader into a pile, I cannot break the tires loose. I can push the pedal on down and stall it but I cannot get my engine power to the tires. My Kioti will dig to the axles at a lot lower rpm.

This says the relief is set to low or something is mechanically wrong with the HST. If the latter it should show it by running HOT

Just to make it clearer, I took my angle gauge today and a 2x4, went to my hill side and laid the board down on the steepest part of the hill I have tried in mid range it is just shy of 20 degrees. That is with 0 being level and 90 being vertical. Some parts were 15-18 degrees. Is this too steep to expect the CT225 to climb in mid range? My LK3054 will go up it in 6th gear(out of 8) with a loader, 5ft KK brush cutter, loaded tires and all. In 5th I can accelerate going up it. As I stated with the CT225 if I stop in the middle, around 18 degrees, I can't take back off again with the loader, a 6ft lightweight box blade and loaded tires. Seems real puny to me.

I call 18-20 fairly steep, but in a walking speed gear you should be able to stop start and climb at partial pedal. Again - RV set too low or a real trans problem.

In High i can't get past 2500 rpm so I will have to check the specs to see if the 13.1 MPH listed is for 2500 or 3000 rpm. In mid range it is a very fast walk I would say, not a run, maybe 4-5 mph wide open with the pedal down. I do stall out on the hills but if you don't go but a little to half way you can keep the RPM's up. On the tire spinning, low range and I now have loaded tires but it wouldn't do it before I loaded them either so I'm not cutting them any slack on that.

I think its the RV set about 500psi too low. Wont help your top speed but will allow you to get more push than youre getting now in every gear by using partial pedal. Your engine should also get a little stonger as it breaks in. Cant wait to hear how the comparison to another 225 works out.
larry

 

[captin_insano]

If it stalls as it is now, I dont think turning the pressure up is going to solve anything. But I could be wrong, only way to know for sure is to do it.

 

[Sprocket]

I checked my driveway slope with a 100" board level it is 15-16" off the ground on the downhill side. (16% grade) My CT225 Loader and Box blade empty tires can climb it in mid range at 2000 rpm. The rpms drop some as I take off and I adjust them up with the throttle lever, then I can run the entire 800ft long driveway without lifting off the forward pedal. when I stop the rpms are closer to 2400 but I can stop and start again on the hill.

Hope this helps.

 

[SPYDERLK]

If it stalls as it is now, I dont think turning the pressure up is going to solve anything. But I could be wrong, only way to know for sure is to do it.

Yeah, I know it seems that way, but if you think of the pedal as like a continuous seamless gearshift it makes sense. When you just push down a little you ask for a very small flow. That flow bulids pressure on the hyd motor to turn the wheels. Even if the resistance is great, and pressure goes high trying to move, the HP required from the engine is small because you are asking for a small amt of flow. Say you dont move - perhaps the natural internal leakage of the pump and motor at the high pressure is leaking the small flow youre asking. Or maybe the relief has cracked. You have no way of knowing - you just know youre still and the engine isnt bogging. You push the pedal further...same - further.. its bogging down. At this point you can be sure you are bypassing thru the relief. Because output torque is not increasing its safe to deduce that pressure is not increasing even tho youve increased flow so much that the engine labors. In a tight hst the only thing that can bypass this much flow without sky hi pressure is the relief valve. -- You push the pedal to the floor. Maybe you move a few inches as the engine stalls. The pressure has gone up a little to force the extra flow thru the relief. Now suppose that unknown pressure [lets call it 3000] that just made you move was guaranteed to be reached before relief started. [The relief is reset to ~3100]. Now, when you push the pedal a little the pressure rises to 3K and you start to creep...alittle more a faster creep.. and so on until you reach a point where the flow and pressure [3000] become too much for the engine to sustain. It starts to bog and you back off the pedal a little and keep going.

If the system can sustain that pressure by design youre good to go for a long time. If not a more powerful system is needed.

From what others have said about the same tractor I think his relief is set on the low side of the spec or below.
larry

 

[SPYDERLK]

I checked my driveway slope with a 100" board level it is 15-16" off the ground on the downhill side. (16% grade) My CT225 Loader and Box blade empty tires can climb it in mid range at 2000 rpm. The rpms drop some as I take off and I adjust them up with the throttle lever, then I can run the entire 800ft long driveway without lifting off the forward pedal. when I stop the rpms are closer to 2400 but I can stop and start again on the hill.

Hope this helps.

Good info. Thats only about 9 degrees. Are you easing the pedal all the way to the metal and still pulling the hill or are you going up at partial pedal?

My impression is that yours and the OPs tractors react similarly in midrange.
larry

 

[bbse]

I checked my driveway slope with a 100" board level it is 15-16" off the ground on the downhill side. (16% grade) My CT225 Loader and Box blade empty tires can climb it in mid range at 2000 rpm. The rpms drop some as I take off and I adjust them up with the throttle lever, then I can run the entire 800ft long driveway without lifting off the forward pedal. when I stop the rpms are closer to 2400 but I can stop and start again on the hill.

Hope this helps.

One thing I would like you to try if you would, crank her up wide open to 2800-3000 and try it. It won't hurt anything. I am not trying anything at 2400 rpm, I have been trying this at full throttle.