hours

[NewToy]

It doesn't have to be sophisticated at all, a tach cable running to the hour meter which records the rpms, it would be preprogrammed to equate rpms to hours.

I guess sophisticated wasn't the best word to use. I have just never seen a digital hour meter with a tach cable running to it. I would think it would be easier to measure the RPM's electronically and factor into the time keeping. That makes me wonder about the tachometers on some of the more gadget laden tractors out there. Are the RPM's registered mechanically on them or electronically like the newer cars? I know my tractor has a tach cable but I'd guess that some of the fancier models out there have done away with a tach cable all together.
John

 

[Soundguy]

I was taliking about tractors and not heavy equipment. Can you site an example of a digital hourmeter on any brand CUT that registers anything other than straight clock hours? I would think it to be a pretty sophisticated gadget to factor RPM's in it's time keeping duties.
John

I'm guessing that you don't have a strong working knowledge of modern electronics. You are seemingly not able to seperate the concept of a 'clock' that calculates time based on a constant factor, vs a meter that calculates time based on a variable factor. in the case of a 'timer' clock, it is adding +1 for every real hour that passes. A metered clock will register +1 hour for every 'x' events that occour. These events may be timing pulses that are picked up from a gear sensor, or may be electronc pulses picked up from the alternator. ( or even calculated data based on engine rpm, and gear selection, via a very simple engine computer ) After 'x' pulses are accumulated, then +1 hour is displayed. As i said before.. i can build this circuit with a handfull of parts from radioshack.

I'll ask around to some of my friends that have tractors with digital displays. I know a few of them have chalangers.. some are kubota.

For heavy equipment.. it's available.. I have a hitachi excavator like this.. a volvo loader.. etc.

And the distinction between ag and industrial equipment isn't a hard and fast line in the sand. There are many tractors that have an industrial counterpart that have just a few options changed.. etc.

Soundguy

 

[Soundguy]

I guess sophisticated wasn't the best word to use. I have just never seen a digital hour meter with a tach cable running to it. I would think it would be easier to measure the RPM's electronically and factor into the time keeping. That makes me wonder about the tachometers on some of the more gadget laden tractors out there. Are the RPM's registered mechanically on them or electronically like the newer cars? I know my tractor has a tach cable but I'd guess that some of the fancier models out there have done away with a tach cable all together.
John

I think the confusion here is that you are assuming anything with a digital readout is a 'digital hour meter' That's an assumption kind like seeing a mug of steaming dark liquid and assuming it is coffee.. when in fact it may be strong tea. A gauge with some numbers on it via led segments can be showing 'time' or tach hours.. all depends on what the manufacturer set it up for.

It's easy to get tach pulses from a alternator that is equipped to provide them.

I've seen digital tachometers for lawnmowers that just use an inductive pickup wrapped around a spark plug wire. it is a digital display about the size of a watch.. runs on a watch battery, and is double-sided- taped to your dash.. it has 1 single pickup wire. It measures 'real' on time from whent he engine starts to stop, and it measures tach time based on rpm at a preset level, also displays rpm.. you choose the display mode. I've seen these on ebay and from northern tool in the past.

Soundguy

 

[NewToy]

Soundguy, You are correct in your assumption that I am no electronics wizard. All of your electronic knowledge is fine, I am proud of you. But, the question was; Is there a CUT with a digital hourmeter that records other than straight clock time. I don't think so and don't care how they make it work. I'm happy to stick a CD in the slot and jam to the Stones without a care in the world of how it works. By the by, I can smell the difference between coffee and "really strong tea" which I detest. I also understand how time works. What I was trying to figure out, and you have obviously missed the point, is how the various mfg's determine how to calculate an hour which is 60 minutes. Are they all the same? Do their digital HM's track exactly the same as their analog varients? If you don't know just say it and go tear apart an I-Pod to help with your frustration.
John

 

[Soundguy]

I'll have to get back to you on the CUT question... All my 'CUT's are from the 1950's or so... and my 'newer' stuff is in the UT and AG range in size.

Soundguy

 

[NewToy]

Fair enough. And I was just kidding about the I-Pod, don't tear into one on my account.
John

 

[jimmysisson]

Maybe if you sent him one he'd open it up.
Jim

 

[NewToy]

Maybe if you sent him one he'd open it up.
Jim

You reckon there is an hour meter in there?

 

[charlesw]

Is there a CUT with a digital hourmeter that records other than straight clock time. I don't think so and don't care how they make it work.

It would be very simple to make a digital hourmeter register whatever you want. So why not register theoretical ideal RPM hours?

 

[Soundguy]

I also understand how time works. What I was trying to figure out, and you have obviously missed the point, is how the various mfg's determine how to calculate an hour which is 60 minutes. Are they all the same? Do their digital HM's track exactly the same as their analog varients? If you don't know just say it and go tear apart an I-Pod to help with your frustration.
John

I have no frustration.. and Ipods, in general are very hard to work on. i've repaired a few of them.

As for your question. Time counters can be made in many different ways. Everything from a digital pulse counter to a stable oscilator.. etc. Can be straight digital. or can be an analog motor/gearing setup as on a plug in non digital clock.

How does each manufacure do it? Pick up your telephone and call EACH one o f them and ask. Most of the analong dashes are calculating hours at some 'rated' rpm.. I.E. for instance.. 1 hr at 1900 rpm on my nh is going to show as 1 hr on the clock... 2 hr at 950 rpm will show as 1 hr on the clock.. etc. I'm sure each manufacture that uses tach time has their own rating rpm.

Now.. for the answer to your earlier question. RE: Do any CUT's have a digital display but show tach time vs real time.

The answer is YES

Chalanger 200 series. this covers tractors from about 23 hp up to 46 hp. They have the option of a digital dash, and the tach/meter counts tach hours.. not real time hours.

After asking a friend with a chalanger ( which i suspected did this ). I called the local dealer in our area.. Ringpower and spoke with their service tech and a salesman. Tech told me the info in black and white, and the salesman referred his quote sheet to look at the available options for the tractors and verified what the tech had said about the 200 series.


So.. is that what you were asking: I.E. Any CUT's with a digital display dash that showed tach hours vs real time hours?

Soundguy