Ulysses wrote:
"jethro" wrote in message
...
costco is selling this weekend a honda gx390 13hp powered
briggs&stratton rig for under 1k

the unit is listed as 7000 watts running power with surge power at
12000 watts

is there something in the powerhead design that allows such a wide
margin that could potentially shorten the life of the unit since
normally commercial units are 6000/8000w or 6500w/8000w but this one
a whopping 7000/12000w ?

the costco unit is equipped also with electric start, battery and
runtime meter



I suggest you take another look at the specs--12,000 watts is not
possible with 13 HP unless some other source of power is
contributing. I would have some doubts about the 7000 watts
continuous as being slightly optimistic.

1 HP = 746 watts, so 13 HP = 9,700 watts.

Therefore it is THEORETICALLY possible for a 13 HP motor to put out that
7000 running watts (but not 12,000 start watts). The run-time conversion
would require no more than 25% loss due to heat, friction, etc.

Maybe...