HOUR METER

[frank_f15]

after reading some posts , i decided to actually pay attention to my hour meter. last week i started tracto and let it up warm up, 12 min @1200 rpm and the meter changed 2/10 of an hour(ok this is good) today i let it warm up about 8 min and it did not change at all. started using tractor at about 1800 to 2000 rpm and after EXACTLY 1 HR TOTAL RUN TIME it only register .8 of an hour. what gives? are these things not accurate? this is a 1998 b2400. if that makes any diff.

 

[ronjhall]

Frank
My old <font color=red>Farmal</font color=red> 340's hour meter read correct time at PTO speed. At any speed less than that it takes longer to read 1 hour. Checked the parts list for my 2910. Tach is cable driven. Wouldn't be surprised if the <font color=orange>Kubota </font color=orange>tach works the same as old <font color=red>Farmal</font color=red>.

 

[patrickg]

I would be surprised if it did work like an old Farmall, well just like. There are two basic styles. One is a rev counter (totalizer fed from tach drive) mechanical (as old Farmall) or electronic like many modern pieces of equipment. The count is normalized for a specific RPM (PTO speed is a logical choice) and calibrated to read out in hours (and tenths, probably) at that speed. Other style is just an electric clock keeping a total count of actual hours unit is on where typically on is defined by an oil pressure switch that turns power onto the clock within a few seconds of startup and off when you shut down (or suffer a major loss of oil pressure event, in which case the equipment will stop soon, as it seizes).

Some equipment (especially rental equipment) has both installed. The last flying club I was in had over 50 lease-back aircraft and they ALL had both. The checkout/in form asked for both Hobbs time and tach time. Hobbs is a well recognized maker of these electric timers and has become generic like Klenex for facial tissue.

Patrick

 

[Bird]

Frank, Patrick gave a good description of the hour meters. The only question is which you have. My '95 B7100 had the clock. It wasn't wired through the oil pressure switch, though, it simply ran whenever the key was turned on and quit when the key was off. Now my '99 B2710 has the type that registers one hour in one hour at PTO speed and less at lower rpm. I would expect your B2400 to have the same thing as my B27100, so .8 in an hour of use would sound right. But of course that means I don't understand it registering .2 in 12 minutes of warm up.

Bird

 

[glennmac]

This is a good question.

Bird, what tells you that is how the 2710 meter works? I assume my 2910 is the same but I dont recall seeing that in the owners manual.

 

[woodstock]

I noticed mine seems to under state actual running time. I though I was just loosing track of time while having all that fun.
I am now going to pay more attention and see what gives with these hour meters.

Winnipeg, Manitoba

2001 BX2200 All Kubota FEL, Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market B7000 w/Tiller (120 hrs)
1984 JD 316 after 687 hrs.

 

[Bird]

<font color=blue>what tells you that is how the 2710 meter works?</font color=blue>

Just observation and experience. The "clock" on the B7100 clicked; took me awhile to figure out what that clicking sound was if the key was turned on, but the engine not running. Of course, the glow plugs took a little longer on the '95 B7100 than on the '99 B2710, and I soon learned to turn the key on, listen for 4 clicks, and start the engine./w3tcompact/icons/laugh.gif

Bird

 

[skent]

Pretty sure the BX uses an electronic clock. One hour at any engine speed is one hour on the meter, unless you approach the speed of light. Then the clock accuracy is going to be the least of your concerns.

Steve

 

[Gomez]

But will the lights still work?

 

[PapaRoakes]

Sorry if I'm just stating the obvious, but with the hour meter being a quartz clock tied to the key switch (not oil pressure). It is possible to run the tractor w/o accrued time by turning the key to the "off" position (the desiel will keep running because it requires no spark) but the battery won't get charged and the lights won't work, etc.

On the flip side you might be surprised to find 20 extra hours on the clock of "shed time" when you inadvertently left the key in the "on" position with the tractor parked. Of course, NONE of us would make a silly mistake like that! Nor would most of us newbies be away from our new baby for a full 20 hours. /w3tcompact/icons/tongue.gif


PapaRoakes