Alternative Power sources - diesel generator

Author

diesel generator

twostik

2005-11-20, 2:21 am

I recently bought a used light plant it is trailer mounted .The engine is a
yanmar and it runs great .
only problem is the generator is shot .

I have a 10k generator i got from
habour freight.It says that it puts out full power at 3 thousand rpm's .the
yanmar i believe isnt desined to run at that speed for long periods .
I have thought about a gear reduction but i dont have any idea were i can
get one and not sure what to get.I would also like to power the engine with
spent cooking oil instead of diesel if possiabile .Any help or suggestions
would be most appreciated. Oh i forgot the generator is designed to be
either belt or chain driven.

SQLit

2005-11-20, 5:21 pm

"twostik" <mwood@joplin.com> wrote in message
news:1132465288.980065@news001.transaeris.com...
> I recently bought a used light plant it is trailer mounted .The engine is
a
> yanmar and it runs great .
> only problem is the generator is shot .

I have a 10k generator i got
from
> habour freight.It says that it puts out full power at 3 thousand rpm's
..the
> yanmar i believe isnt desined to run at that speed for long periods .
> I have thought about a gear reduction but i dont have any idea were i can
> get one and not sure what to get.I would also like to power the engine
with
> spent cooking oil instead of diesel if possiabile .Any help or suggestions
> would be most appreciated. Oh i forgot the generator is designed to be
> either belt or chain driven.

All of the light plants I have seen have pretty small engines. Are you sure
that your engine has enough power for a 10 kw generator?
You could think about a pulley system to get the rpms up to the generator.
Most small diesels I work around are 1800 rpm. So gearing up to get the rpms
and horse power you may be on the wrong end of the battle.

Gear drive setups are nice but way pricey for my pocket book.

Bruce in Alaska

2005-11-20, 7:21 pm

In article <1132465288.980065@news001.transaeris.com>,
"twostik" <mwood@joplin.com> wrote:

> I recently bought a used light plant it is trailer mounted .The engine is a
> yanmar and it runs great .
> only problem is the generator is shot .

I have a 10k generator i got from
> habour freight.It says that it puts out full power at 3 thousand rpm's .the
> yanmar i believe isnt desined to run at that speed for long periods .
> I have thought about a gear reduction but i dont have any idea were i can
> get one and not sure what to get.I would also like to power the engine with
> spent cooking oil instead of diesel if possiabile .Any help or suggestions
> would be most appreciated. Oh i forgot the generator is designed to be
> either belt or chain driven.
>
>

You really don't give enough information in your post concerning the
actually type of generator that you are trying to replace. Is it AC or
DC? If AC, then is it 60Hz? If so, it is going to be 3600 Rpm, 1800Rpm,
1200Rpm, or maybe even 900Rpm, but one of those anyway, but certainly
not 3000Rpm. unless it is a 50Hz genserator, which isn't compatable
with US or Canadian Power systems. Best to figure about 2HP/Kw to be
on the safe side for generating power. Belts and sheives will give
you an easy way to design a ratio system to get you engine rpm down to
the Rpm the Genend needs. Grainger, or McMaster-Karr has complete
sheive and belts listings. Pay attention to the HP/belt design
criteria, otherwise you will be burning up a lot of belts.

Bruce in alaska
--
add a <2> before @

Jaggy Taggy

2005-11-25, 1:21 pm

On 11/20/05 5:19 PM, in article
bruceg-E17DB7.13192120112005@netnews.worldnet.att.net, "Bruce in Alaska"
<bruceg@btpost.net> wrote:

> In article <1132465288.980065@news001.transaeris.com>,
> "twostik" <mwood@joplin.com> wrote:
>
>
> You really don't give enough information in your post concerning the
> actually type of generator that you are trying to replace. Is it AC or
> DC? If AC, then is it 60Hz? If so, it is going to be 3600 Rpm, 1800Rpm,
> 1200Rpm, or maybe even 900Rpm, but one of those anyway, but certainly
> not 3000Rpm. unless it is a 50Hz genserator, which isn't compatable
> with US or Canadian Power systems. Best to figure about 2HP/Kw to be
> on the safe side for generating power. Belts and sheives will give
> you an easy way to design a ratio system to get you engine rpm down to
> the Rpm the Genend needs. Grainger, or McMaster-Karr has complete
> sheive and belts listings. Pay attention to the HP/belt design
> criteria, otherwise you will be burning up a lot of belts.
>
> Bruce in alaska

Interesting discussion. I looked on HF website and the generator runs at
3600 rpm. And it is surprisingly cheap, under $300.

Which brought me to think as well about building my own emergency generator.

I would use an old yard truck, its perfect, it has all the power one needs,
has already a muffler and a cooling system, electric start, the works, but
it does not have a governor to regulate the engine speed under load.

Is that something one can get and where???

Uwe in Maine

Steve Spence

2005-11-30, 10:21 am

Jaggy Taggy wrote:
> On 11/20/05 5:19 PM, in article
> bruceg-E17DB7.13192120112005@netnews.worldnet.att.net, "Bruce in Alaska"
> <bruceg@btpost.net> wrote:
>
>
>
>
> Interesting discussion. I looked on HF website and the generator runs at
> 3600 rpm. And it is surprisingly cheap, under $300.
>
> Which brought me to think as well about building my own emergency generator.
>
> I would use an old yard truck, its perfect, it has all the power one needs,
> has already a muffler and a cooling system, electric start, the works, but
> it does not have a governor to regulate the engine speed under load.
>
> Is that something one can get and where???
>
> Uwe in Maine
>

An automobile engine, good for 200k miles or so, only holds up for 4000
hours or so, if that.

see http://www.utterpower.com/governors.htm about governors.

stay away from 3600 rpm gensets, they wear out too quick.

--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html

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