[AT] Statistics In Tractor Manufacturing Was Bicycle Program

[Stephen Offiler]

Jim, I keep forgetting to check the hourmeter in my truck, but my car has a
direct readout of average MPH.  I record it and reset with every tank of
fuel along with MPG data.  The overall average of just under 3 years and
just over 40K miles is 35.5 MPH.  Turns out I'm remarkably average.  I wear
size Medium suits off the rack too.

Steve O.

On Mon, Sep 16, 2019 at 10:52 PM Jim Becker <mr.jebecker at gmail.com> wrote:

> Several years ago, my brother and I were comparing odometer readings on
> our trucks.  My truck was older and had a lot more miles.  Then we checked
> hours.  His had a bunch more.  His truck use was probably pretty typical,
> including a fair amount of local driving.  As I recall, he averaged close
> to the expected 35.  I rarely use mine to just drive around on short
> errands.  Most of the mileage is on longer trips.  Earlier today, it turned
> over 100,000 miles and is just over 2,000 hours.  The average is 49 mph.
> Since my highway speed is usually 70 or more, it seems it would be tough to
> get a long term average much higher.
>
> Back in the good old days, hour meters were typically grounded through an
> oil pressure switch.  If the engine wasn’t actually running and producing
> oil pressure, the hour meter wouldn’t clock time even with the switch on.
>
> Jim Becker
>
> *From:* Mike M
> *Sent:* Monday, September 16, 2019 3:08 PM
> *To:* at at lists.antique-tractor.com
> *Subject:* Re: [AT] Statistics In Tractor Manufacturing Was Bicycle
> Program
>
> I have a Scag zero turn that I bought new, I put about 350 hours on it
> over the course of several years.  When I parked it this last fall, I
> accidentally left the key on, so when I went to start it this Spring I had
> 3500 hours on it. Fortunately my daughter works at the dealer so I was able
> to buy a new one.
>
> Mike M
> *From:* Stephen Offiler
> *Sent:* Monday, September 16, 2019 7:32 AM
> *To:* Antique Tractor Email Discussion Group
> *Subject:* Re: [AT] Statistics In Tractor Manufacturing
>
> For the record, in automotive engineering, the conversion between engine
> hours and road miles is usually taken to be 35, not 60.  I've also seen 33
> used.  It's a broad approximation of course  Vehicles used extensively on
> the highway will be somewhat higher, and vehicles used extensively in heavy
> traffic/city conditions will be somewhat lower.  It would be exceptionally
> rare to find any roadgoing vehicle averaging 60mph.
>
> SO
>
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