Author Topic: New backup power  (Read 3215 times)

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Offline bj

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Re: New backup power
« Reply #15 on: November 30, 2015, 08:56:50 AM »
   Put 25 liters of fuel through the engine,  dropped the pan, checked the rod bearings, and
all looks as new, no scuffs or high spots.
   Built my own back plate, engine mounts, and cradle for floor mount.
   In progress----exhaust header  and generator is on it's way.
   I will be building the flywheel/adapter housing, as nothing is available because of
the flywheel I want to use.  I can get one custom built, but too many $.
   Can't start that until I have the generator for exact measurements.
   
"Even a blind squirrel will find an acorn once in a while"
bj

Offline MadScientist267

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Re: New backup power
« Reply #16 on: November 30, 2015, 01:30:40 PM »
Looking real good Bj ;)

Interesting alternator there as well... can't say I've seen something quite like it for use in that position on an engine before... is that PMA in some form or another?

Steve
Wanted: Schrödinger's cat, dead and alive.

Offline bj

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Re: New backup power
« Reply #17 on: November 30, 2015, 07:33:51 PM »
   Thanks Steve, coming slowly, as only have one properly functioning arm at the moment.
   They use those alternators on stuff with low electrical draw.   Odd design---PMA, with two
sets of windings.  One, lots of turns, the other less turns bigger wire.  All feeds into a little
black box that seems to be more than just a recifier.  I will just be using one winding, (more turns)
as this engine will only see idle for warmup, and 1800 rpm.
    BTW  they really cog.  Thought about using one on a four foot set of blades, but it would take a
stiff breeze to get it going.
"Even a blind squirrel will find an acorn once in a while"
bj

Offline Wolvenar

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Re: New backup power
« Reply #18 on: November 30, 2015, 11:45:18 PM »
looks great!
Trying to make power from alternative energy any which way I can.
Just to abuse what I make. (and run this site)

Offline bj

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Re: New backup power
« Reply #19 on: December 08, 2015, 05:03:26 PM »
   I was not happy with the cast iron exhaust manifold, as it was designed for a turbo,
which I did not put on, and it was kind of restrictive.
   So, I built a tuned header,  (2000 rpm) and tried it out.  (just to keep in practice)
   With no other changes, identical conditions, it went from 1799 to 1801 rpm with the stocker
to 2001 to 2003 rpm with the header.
   That of course is unloaded conditions for both, but more load should increase the effect.  Time
will tell.
    All in all worth the work.
   
"Even a blind squirrel will find an acorn once in a while"
bj

Offline DaveW

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Re: New backup power
« Reply #20 on: December 08, 2015, 09:36:25 PM »
Looks great.

Offline hiker1

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Re: New backup power
« Reply #21 on: December 08, 2015, 11:28:58 PM »
Nice...not sure about Diesel engine....headers on a gas engine will make it run a little lean...and the rpms  do incress with less back pressure...but runs hot  under load...unless of course you make it run a little richer...?
just do it

Offline bj

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Re: New backup power
« Reply #22 on: December 09, 2015, 06:14:22 AM »
    Thanks Dave
    Hiker--I had a bit of trouble getting my head around it, so much so I put the stock manifold
back on last night, and repeated the test, then header on and did it again.  Same results.
I think the key is how a diesel governor works.  The set point becomes the minimum amount of
fuel.  It can give more if it slows down (load), but never less fuel than that.
     Two other things I noticed--the exhaust is noticeably cleaner, and it is a lot louder.  The noise
part will be a challenge, as I don't really want to hear it from the house. 
     But when it's -40 and the power goes off I probably won't care all that much.  ;)
"Even a blind squirrel will find an acorn once in a while"
bj

Offline bj

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Re: New backup power
« Reply #23 on: December 21, 2015, 11:37:45 AM »
  Gradually acquiring parts.  This rad was an awesome deal, high volume
racing rad for, of all things, a mini-cooper.  $110 Can, at my door.
  Of course it could be too small, won't know until I can test it with
full load.  Kittens like to photo-bomb.
"Even a blind squirrel will find an acorn once in a while"
bj

Offline hiker1

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Re: New backup power
« Reply #24 on: December 22, 2015, 01:26:03 PM »
Shroud on the rad might help out......took a second to find the secound kit
just do it

Offline bj

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Re: New backup power
« Reply #25 on: December 23, 2015, 05:48:07 AM »
  Agreed Hiker, shroud for sure.  Actually, already beating out some aluminum for it.
  I will probably wall mount the rad to isolate it from vibrations.
"Even a blind squirrel will find an acorn once in a while"
bj

Offline bj

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Re: New backup power
« Reply #26 on: April 09, 2016, 02:39:39 PM »
Things were on hold for a bit.  Anyway, generator sitting on chassis, (not mounted yet).

Had to take a bit off the flywheel bolts, as clearance is tight.

Managed to get the drive disk mounted on the flywheel, and with much fussing about, it is
less than a thou out of concentric.
"Even a blind squirrel will find an acorn once in a while"
bj

Offline bj

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Re: New backup power
« Reply #27 on: April 15, 2016, 05:02:11 PM »
   Coupled, leveled, etc.  Now I have accurate measurements for the flywheel
housing.
    Also can build the permanent Gen mount, with the rubber mounts.
"Even a blind squirrel will find an acorn once in a while"
bj

Offline Wolvenar

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Re: New backup power
« Reply #28 on: April 19, 2016, 12:33:48 AM »
Looking nice.
Whats planned for the radiator mounts?
Trying to make power from alternative energy any which way I can.
Just to abuse what I make. (and run this site)

Offline bj

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Re: New backup power
« Reply #29 on: April 19, 2016, 07:54:32 AM »
   It's going to be wall mounted, with a shroud.  What you see there for plumbing
was just a quick and dirty hook-up so I could run, test, tune etc.
"Even a blind squirrel will find an acorn once in a while"
bj