"Stephen" wrote in message
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On Fri, 26 Jun 2009 22:09:51 +0100, "gazz" wrote:

they are all the same internaly,

So all makes are more or less equal?

yup, only differance seems to be if you get one with a 12 volt charging
outlet or not, that's rated at about 8 amps, and is only for charging, as
without a battery on it the voltage will be anything upto 18 volts, some
people hoped to run a 12 volt light directly off the charging output, and
found it blew the bulb.

at the end of the day it's a cheaply made disposable generator, you will be
hard pushed to get spares for them, and if you can it's just not worth it,
when you can get a whole new un for 50 quid,

the 650 watt output is for a resistive load

So when the other poster mentioned 350W it's all to do with power
factor? So it might not be as useful as the figures first suggest?

yup that's it, the box and adverts rave about the outputs, but like most
things it's marketing stretching the truth, only when you read the chinglish
destructions inside the box does it mention the different acceptable outputs
for different kinds of loads,

Depends what you hoped to run off it really, i have used my sds drill on
mine, not sure of the wattage, prolly around 500 or so, i just plugged it in
and ran with it, worst thatll happen is i'd stall the engine or trip the
overload breaker.

Apparantly the 4 stroke versions of this genny are noisier, and use the
same
ammount of fuel as they have an engine twice the size, but about the same
output,

Why do the bigger engines have the same output? Are they less
efficient?

2 stroke and 4 stroke differances, a 2 stroke firing every revolution can
output more power than a 4 stroke that fires every 2nd rev of the same size,
very common with model airplanes, they'll say 'this model can be used with a
..40 2 stroke or a .60 4 stroke engine.

the only thing the little 2 stroke gennies dont like is being lightly
loaded, they 4 stroke.

Why should running with little load cause them to misfire?

it's due to the simple carb that dosent have enough different speed circuits
in it, so it's set up to be the right mixture at high load, as running lean
then will destroy the engine pretty fast,
hence at low loads it's running rich, and a 2 stroke running rich will miss
every 2nd rev.. hence the term 4 stroking, as theres too much fuel to
ignite,

if you are sure you'll not run a high load, you can turn the mixture screw
on the carb right in, and it'll run sweetly at low loads, but you must
remember to wind the mixture screw back out 2 turns when you use a high
load,

my genny lives in a locker in my motorhome now, it only runs the charger, a
load of about 200 watts, so i have adjusted the mixture to make the engine
run sweet at that load, it will just handle the laptoprs psu and the vinyl
cutter, but anything else and it'll complain, but as everything else runs
off 12 volts, or needs more than 1000 watts mains, the genny never powers
them.