"Ignoramus3221" wrote in message
...

On 2013-04-10, wrote:
On Apr 9, 10:58?pm, Ignoramus26995 ignoramus26...@NOSPAM.
26995.invalid wrote:

2. I figured out how to deal with errors caused by friction. It is
very simple. I just need to take two readings, one after creeping the
load up, and the other after creeping the load down. The average
cancels friction out. Problem solved.


i

So how much difference is there between creeping up and down?
Inquiring minds want to know.

Friction depends on a lot of factors, such as load, how far the load
is on the forks, weather (hot or cold) etc.

With a small weight of 2800 lbs, it was about 200 PSI difference.

When I lifted a forklift that weighed 12,000 lbs, it was more like 400
PSI.

i

You probably already thought of this but you will need to subtract out for
the pressure to lift the forks empty, maybe paint a weight on containers you
might re-use for a scrap bin.

RogerN