Dozer Man
ArboristSite Operative
woke up and can't get back to sleep
Last weekend I had my first violent misfire. I've had very few misfires but none like this one. It was on a short 10" endcut piece of knotty cherry. My first thought was that the shorter piece had something to do with it. But after running a couple more shorts and then longs I couldn't get it to happen again. I always run the engine at around half throttle just to slow things down. It always seemed to engage better so I've kept running that way. Imho there is no reason for the ram speed to be so high. I've thought about putting a larger clutch pulley on. That would lower the "gear ratio" which would slow things down. But then I was afraid it would be like down shifting a truck. The lower the gear the lower the speed, but the higher the torque/pulling power. Now after seeing the hard misfire in person, I'm not sure if a gear ratio reduction would help or amplify the dis-engagement issue. It might not disengage as often but when it does the engine speed will be higher into its torque range and exert more force. On the other hand, as Cmccul8146 asked me...Just because you lowered the gear ratio, why would you feel the need to run the engine at higher throttle settings, that defeats the purpose of slowing things down. I explained to him how I caught a lot of grief from others over the half throttle issue earlier in this thread. We could learn a lot by picking his brain.
Sorry for rambling, I hope someone finds it pertinant to the issue. I'm not sure if just replacing the rack is a complete fix. It seems to be an engagement/dis-engagement issue also. Some of you that have split large quantities with these, have you noticed a "bow" in the rack?? Just curious.
If anyone has talked to speeco lately, I would really like to know there thoughts on all of this. I'm just getting to my "down time" at work, which is when I do most of my sawing/splitting. Metal gets brittle in the cold and I was hoping to have these issues resolved before winter.
Again, thanks to all for there posts. Keep them coming, we'll get to the bottom of this!
Unrelated Issue: It can stop raining any time now!!!
Last weekend I had my first violent misfire. I've had very few misfires but none like this one. It was on a short 10" endcut piece of knotty cherry. My first thought was that the shorter piece had something to do with it. But after running a couple more shorts and then longs I couldn't get it to happen again. I always run the engine at around half throttle just to slow things down. It always seemed to engage better so I've kept running that way. Imho there is no reason for the ram speed to be so high. I've thought about putting a larger clutch pulley on. That would lower the "gear ratio" which would slow things down. But then I was afraid it would be like down shifting a truck. The lower the gear the lower the speed, but the higher the torque/pulling power. Now after seeing the hard misfire in person, I'm not sure if a gear ratio reduction would help or amplify the dis-engagement issue. It might not disengage as often but when it does the engine speed will be higher into its torque range and exert more force. On the other hand, as Cmccul8146 asked me...Just because you lowered the gear ratio, why would you feel the need to run the engine at higher throttle settings, that defeats the purpose of slowing things down. I explained to him how I caught a lot of grief from others over the half throttle issue earlier in this thread. We could learn a lot by picking his brain.
Sorry for rambling, I hope someone finds it pertinant to the issue. I'm not sure if just replacing the rack is a complete fix. It seems to be an engagement/dis-engagement issue also. Some of you that have split large quantities with these, have you noticed a "bow" in the rack?? Just curious.
If anyone has talked to speeco lately, I would really like to know there thoughts on all of this. I'm just getting to my "down time" at work, which is when I do most of my sawing/splitting. Metal gets brittle in the cold and I was hoping to have these issues resolved before winter.
Again, thanks to all for there posts. Keep them coming, we'll get to the bottom of this!
Unrelated Issue: It can stop raining any time now!!!
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