What could i do with this?

[arKzeRo]

Hi everybody

I have just been given a little 2 stroke generator to play with. Its this model - Sumo SML34GEN 650W Generator. It engine is not running and i was wondering what i should do with it?

Do you think it would be any good for a wind turbine? Conversion to some other form or just Scrap and harvest?
I am only just learning so i have not a clue on what to do with it

i have the following info from the body of the machine
1.8hp 2 stroke
650 watt
780watt - peak
Single Phase
Power Factor cos 0=7 < whatever that means.
AC Output 230v - 50Hz

anyway any advice would be much appreciated

My neighbor gave it to me after seeing me working on my Bedini build and asking what i was building. He says i can do what i wish with it and that he has two other bigger Gens with dodgy engines that i can take at my leisure!

What a nice man!

Best Regards
Jay

[HairBear]

Fix it? What exactly is wrong with it?

[arKzeRo]

Hi hairbear Thanks for replying I am not too sure as i know nothing about engines! I really wouldn't want to use it driven with a noisy petrol engine at home as i am in a built up area so, i was wondering if it could be put to some other use! something that won't make my neighbors go mad

i have found that it is a very very cheap camping generator produced in China by the bucketload

best regards
jay

[HairBear]

Well, I would use it as a learning tool and take it apart and see how it works. You have the perfect opportunity to educate yourself with it. Take it all apart and try to put it back together. If you are able to build a Bedini, this petrol powered generator will be easy for you. The only idea that comes to mind is using a GEET system with it, although, that does not address the issue of the noise. You wanna really impress your neighbor? Show him the generator working and with a GEET attached and running on something like ketchup or a soft drink and a little petrol. like the videos below...

YouTube - TheGeetGuys .com presents a GEET demo

YouTube - GEET GENERATOR RUNS ON BEER AND COFFEE

[arKzeRo]

Ooh cheers HairBear! both ideas sound great I will look into this GEET thing as i have never heard of it before and then once i have tried that then i will do the strip down and learn some stuff

i see some of them can be converted to natural gas and lpg also

Thanks for taking the time to reply HairBear

Best Regards
Jay

[EthelAether]

Hi Jay,

If it were my deal to do, I'd work on getting the engine running!

You're in tough shape if you want to drive the alternator section with a set of blades. That gen-set is designed to operate at a fixed RPM which is far greater than you'd ever get from a (proper) wind charger.

In other words, you're in a much better position to learn about 2-stroke engines, than green energy.

Fuel, Air, Compression, Spark - find out which one you're missing..

[Joit]

Hi Jay,

If it were my deal to do, I'd work on getting the engine running!

You're in tough shape if you want to drive the alternator section with a set of blades. That gen-set is designed to operate at a fixed RPM which is far greater than you'd ever get from a (proper) wind charger.

In other words, you're in a much better position to learn about 2-stroke engines, than green energy.

Fuel, Air, Compression, Spark - find out which one you're missing..

There are Gear for RPM's, for the one, who dont have Imagination.
In my Neighbourhood is a Company with a Windmill, what charges a Bank of Batteries,
and that is quite enough, that he runs half from the Power, what he has to use.
But maybe a selfmade Generator is better for this because of this worse Efficiency,
what our Technicians reach at her tinkered Generators

[cody]

Take a look and see if the generator has permanent magnets on the rotor. If it doesn't then its probably not a good choice to turn into a windmill or anything else for that matter. If thats the case, i would just fix the engine and have yourself a working generator around for whatever.

[WeThePeople]

First, here is the manual:

https://www.screwfix.com/sfd/i/cat/pdfs/70/p4760270.pdf

It seems to get good reviews:

http://www.screwfix.com/prods/89480/Power-Tools/Generators/Sumo-SML34GEN-650W-Generator#BVRRWidgetID

(6 reviews at the bottom...)

And it sure is inexpensive enough,
not a lot to loose by playing with it.



I get lost in about six companies
as I follow it overseas to China.

Like these folk:

http://www.wygenerator.com/kp-sumo-generator-parts-8961.html

Company Name: Zhejiang Taizhou Wangye Power Co., Ltd.
Contact Person: Helen Xu MSN Online Status Indicator
Tel: 0086-576-84065771, 84065773, 84065775
Fax: 0086-576-84065770
Email: [email protected]
Address: Ma'anshan, North Huangyan District, Taizhou City, Zhejiang, China.
Zip: 318020



The closest I've come are these people:

http://www.generator-china.com

Company Name: Fujian Haiweineng Electrical Machinery Co., Ltd.
Contact Person: Shi hua
Tel: 86-593-6581466
Fax: 86-593-6580466
Mobile Phone: 86-13859652525
Email: [email protected]
Address: No.203 Wangjiling Industry Zone,Fuan city, Fujian, China
Zip: 355000



Do you know what parts you might need
to get it running again ?

Sure would make a fun HHO test bed,
shouldn't take to big a cell to feed it.
.

[Michelinho]

Windmill if permanent magnets used in the rotor construction.

Hi arKzeRo,

If the rotor has permanent magnet, you can use it for a windmill. Those generators run at a fixed rate of speed, let say 1,200 rpm to produce 110 VAC and as a windmill, it will only have to turn to produce around 14 VDC so the rpm would be just right for a big flapper in front.

Take care,

Michel

[WeThePeople]

Hi arKzeRo,

If the rotor has permanent magnet, you can use it for a windmill.
Those generators run at a fixed rate of speed, let say 1,200 rpm
to produce 110 VAC and as a windmill, it will only have to turn
to produce around 14 VDC so the rpm would be just right
for a big flapper in front.

Take care,

Michel

Except for good ones that turn at 1800-RPM,
generators turn at 3600-RPM for 60-CPS out.

There are no parmanent magnets,
because the rotors field is regulated.

They are self energizinzing rotors
(From residual magnetism usually)
with field windings that have the
voltage regulated to maintain the
stators output at 110/120-VAC.

Smaller ones might have a small
magnet on the engine flywheel
for a magneto style ignition still,
and might use a second coil to
spike the rotor into action only.

Now for use as a windmill gen,
just like a car alternator needs,
magnets on the rotor instead of
coils of wire might be warranted.

But, as is, an induction gearset,
and a rectifier for the stator's out
are It's only future as a windmill gen.

And the rectifier for the stator out
is because It's only usable function
would be to charge batteries with
recified current to a charge regulator.

The frequency of the output (60-CPS)
is purely a function of the shaft speed.



As for the developed neighborhood and noise.

Get some perforated drain pipe, the large 4" stuff,
factor one 8' piece per 3-4 horsepower of engine.

I've used 16' (8' X2) for a two cylinder Onan generator
that made 10-HP @ 1800-RPM without back pressure.

It would be 24' (8' X3) if it was a 3600-RPM genset.

dig a ditch and put a couple inches of pea stone in it.
place the pipe with the two rows of holes aligned
top and bottom so water cannot accumulte in it.

load the sides fully, and over the top with several inches
of peastone, and finish with several inches of dirt.

Now you have a farmers muffler, they work awsome !



Reduce it to standard 1" thickwall black pipe,
wrap the pipe with fiberglass insulation tape.

The better 2" fiberglass mat, with foil backing.

You won't hear exaust through that either.



Lead that to a cinder block doghouse,
that is lined inside with "Sound-Down".

it is 2" of closed cell foam,
with a sheet of 1/8" lead,
them 2" more foam on the
other side side too.

get it at any marine shop,
it is used to silence engines
and generators on boats.

There is no way you'll hear your genny,
and more importantly, nor will your neighbors.



Get two lengths of 2" PCV for in and out air,
duct them to the engine's in and out vents
to handle heat ventalation needs of the unit.

The air usually goes in the genny end,
then out the motors flywheel fan edge.

Use 4" for a larger unit's ventalation needs.



Don't get me wrong, this lil' pipsqueak
is not worth all this work/money.

But others following and reading this might.

and you did say your neighbor had
others you could have that are bigger.

They might be worth doing this for.

[pattester]

Compressed Air 2 Stroke

Hi arKzeRo, you may be intrested in this Youtube video
YouTube - 2 Stroke Compressed Air Engine.


have fun

[arKzeRo]

Wow! some excellent suggestions here guys!

Thank you to every one you!

Well, i spoke to my old dad last night about it and asked him to have a look at the engine for me and he came over to my place and walked me through servicing it it had a dirty spark-plug, gunked up carb and he thinks that the Flywheel Magneto has some oil leakage into it.he said that he will bring
a tool for pulling the hub off so we can clean it and it should run fine! Great!

So i am going to use this hopefully in such a way that i can use all the parts to try out some of the various methods of conversion then i would like to put it back together and familiarize myself with how the generator end works!

I don't fully understand how it creates the charge since it has no magnets just windings as stated above, i understand the coil - magnet way!

I have lots to learn i think.

@Pattester My dad mentioned running the engine on compressed air too, he has a compressor and will help do it! Natural Gas and propane works also he says!

could the compressor be quickly switched over to run from the generator? or is that just stupid? I will enjoy finding out!

I asked a silly question like that many years ago at school and got ridiculed by my tutor! I think i asked "why can't a motor drive a generator which produces enough electricity to run the motor and tap of the excess for usage else where?" he yelled "Friction" as he gave me a clip round the ear

@WeThePeople that was a great and informative reply my friend! I did not understand all of it but, it helped me with lots of things i wondered about.Thanks!

This is side tracking me from my bedini build

Oh yeh the other generators are a Honda E1500 1973 and a larger welding gen.Guy says that the welding one is a four stroke - alternator gen.

best regards