Engine hours vs mile's

[Bornfree]

What do you think the conversion is in the UK. I thought about 30 but looking online it's anywhere from 24 to 50.

I serviced a tractor this week that had just hit 20,000 hour's and wondered what it was in miles.

 

[Barking Mat]

I'd say for a car 60mph, for a car, but obviously not a tractor.

 

[qwakers]

my vans speed average for the last 7000 miles is 28mph. i suspect a tractor will be nearer 10.

 

[chrismac]

What do you think the conversion is in the UK. I thought about 30 but looking online it's anywhere from 24 to 50.

I serviced a tractor this week that had just hit 20,000 hour's and wondered what it was in miles.

I get what your meaning I think, a tractor sitting at 2000 rpm 10 hours a day for 5 days, lets say a car does 60 mph at 2000 rpm for easy counting, does that reflect to engine wear the same as a car doing 600 miles a day, does that equate to the same as 3000 miles in engine wear.

The reason I wondered this is I have some Godiva fire pumps with ford CVH engines 1.6l and some had less than 100 hours run time.

 

[AVI_8]

I get what your meaning I think, a tractor sitting at 2000 rpm 10 hours a day for 5 days, lets say a car does 60 mph at 2000 rpm for easy counting, does that reflect to engine wear the same as a car doing 600 miles a day, does that equate to the same as 3000 miles in engine wear.

The reason I wondered this is I have some Godiva fire pumps with ford CVH engines 1.6l and some had less than 100 hours run time.

I’d say that’s about 3-4 thousand miles equivalent it was a car engine at 100 hours

 

[brightspark]

thats why you dont buy top end cars of the old bill. they sit in laybys for hours on end engine running without clocking the miles up so look a good buy for the lower milage

 

[dave h 2]

thats why you dont buy top end cars of the old bill. they sit in laybys for hours on end engine running without clocking the miles up so look a good buy for the lower milage

Same on the school run, they sit for an hour every school day outside mine keeping warm or cool depending on the weather reading a book.

 

[More Amps]

thats why you dont buy top end cars of the old bill. they sit in laybys for hours on end engine running without clocking the miles up so look a good buy for the lower milage

I remember seeing half a dozen ex-plod X5s up for auction - average mileage 65-70k. They'd all had replacement engines at around 40k, so not long before they'd be needing another one...

 

[Bornfree]

my vans speed average for the last 7000 miles is 28mph. i suspect a tractor will be nearer 10.

So that makes a 20k hour tractor 560,000 miles.

 

[8ob]

I don’t think there is an easy way to convert tractor engine hours into miles, our last forestry tractor was all done after an extremely hard going 15000 hours, the same hours with the same tractor towing a mower about would be nothing for it.

Bob

 

[AVI_8]

I don’t think there is an easy way to convert tractor engine hours into miles, our last forestry tractor was all done after an extremely hard going 15000 hours, the same hours with the same tractor towing a mower about would be nothing for it.

Bob

You’d be knocking on the door of a quarter of a million miles equivalent on a road going vehicle with that amount of hours.

 

[Agroshield]

How do engine hours relate to rpm?

If the machine sits idling for an hour, is that one hour on the meter? If it sits driving a grain dryer with the PTO at PTO rpm for an hour, how much does that add to the meter? There are other applications for a tractor where the engine is running at high speed, but the ground speed is low.

The above is lots of hours added with few miles travelled.

In the life of some tractors, things like driving on a road towing a trailer, would be lots of miles added with few hours added (because you are in a higher gear and thus lower revs).

From a different industry, think about mobile concrete pumps - drive to site, spend 8 hours pumping, drive home. Lots of hours, but not all of them adding miles.

 

[8ob]

You’d be knocking on the door of a quarter of a million miles equivalent on a road going vehicle with that amount of hours.

The same engine in a well maintained truck would make it to 1m miles before it needed an overhaul, tractor hours can be harsh.

Bob

 

[Bornfree]

How do engine hours relate to rpm?

Older tractors had a mechanically driven tachometer and hour clock so higher rpm meant more hours. But modern one's are just timers.

 

[plewlandsbob]

These are from a customer's tractor. It is 2 and a half years old. It' only job is to fill a slurry tanker, with Distillery waste. Sitting at ldle, driving a vacuum pump. Drive on road, to a farm, usually within a 25 mile radius. Then empty tanker, in field, at walking pace.
If you do the math, it works out at, an average of,
10.3 miles , per engine hour.
But this doesn't take account of loading time, travel distance, unloading time, or sitting idling, with heater or aircon running, during breaks or driver talking , with anyone he meets( probably more time than anything else)

 

[Bravheart]

Older tractors had a mechanically driven tachometer and hour clock so higher rpm meant more hours. But modern one's are just timers.

This^^^^^
Some older tractors could clock up an hour in less than an hour if working really hard cultivating seedbeds etc. But take 1.5-2 hours to clock an hour on light jobs. Gave a more accurate view of the work it had actually done.

Used to count roughly that 1000 hours on a tractor was equivalent to 10,000 miles in a car.
But thinking about it my 18 y o car has over 150k miles on it and tells me the average speed over it's lifetime is 30mph so someone has sat in the seat for 5000 hours. Which is just run in on a tractor or for the same age 277 hours a year.

 

[Matchless]

My 2016 Iveco Daily 35S11 (Ex Tesco) has 235,000 miles and 10,500 hours recorded.............. 8 speed auto with power mode disabled and 50mph limiter (now removed) so usually max 2000 rpm.

 

[chrismac]

This^^^^^
Some older tractors could clock up an hour in less than an hour if working really hard cultivating seedbeds etc. But take 1.5-2 hours to clock an hour on light jobs. Gave a more accurate view of the work it had actually done.

Used to count roughly that 1000 hours on a tractor was equivalent to 10,000 miles in a car.
But thinking about it my 18 y o car has over 150k miles on it and tells me the average speed over it's lifetime is 30mph so someone has sat in the seat for 5000 hours. Which is just run in on a tractor or for the same age 277 hours a year.

I cant remember if it was the ford 10 or 40 series, maybe both had an egg timer symbol on the rev counter at approx 1500 rpm from memory, this was hours to timed hours, I timed it one night with the needle on that symbol just to see.

 

[chrismac]

What do you think the conversion is in the UK. I thought about 30 but looking online it's anywhere from 24 to 50.

I serviced a tractor this week that had just hit 20,000 hour's and wondered what it was in miles.

Are you wondering about running gear wear miles or engine wear in miles,

 

[Erie Fred]

I cant remember if it was the ford 10 or 40 series, maybe both had an egg timer symbol on the rev counter at approx 1500 rpm from memory, this was hours to timed hours, I timed it one night with the needle on that symbol just to see.

IIRC seeing somewhere that on the mechanical ones (like my Ford 7610) that "true hours" was at PTO speed.
YMMV