Micro CoGen.

Alternators and Generators => Induction and Brushless generators => Topic started by: Cavalry on April 02, 2011, 06:35:39 PM

Title: Need some generator head info
Post by: Cavalry on April 02, 2011, 06:35:39 PM
I am looking at this generator head but am a little confused.  The tag states 6KW but the math on the tag works out to 5.5KW?

Is the tag KW rating the peak or running rating?
Title: I built one with a regular horizantal 6hp 3/4" shaft engine!
Post by: seabattery on March 17, 2012, 09:29:21 AM
I got a 2.5kw generator head from ebay for $100 (including shipping)
Then I got a 6hp engine from Harbor Freight (also $100 on sale)

I clamped down the engine to a big trailer so it couldn't vibrate much while it ran.
I marked 3/4" from the end of the shaft with a sharpie. Then I marked 1/8" circle
from the 5/16" tapped hole in the end of the shaft.
I started the engine at low idle then I used an angle grinder with sandpaper
flap disk to shave the shaft conical at the end grinding down to the lines.
I bolted the genhead on to the motor and started it up. It ran perfectly. It has now been running daily for 3 months.
Email me at seabattery at gmail.com for pics/info if you want.
Title: Re: Need some generator head info
Post by: LowGear on March 17, 2012, 12:54:55 PM
Wow seabattery,

And no JB Weld?  Amazing!

Casey
Title: Re: Need some generator head info
Post by: seabattery on March 17, 2012, 08:01:29 PM
Yes actually I used JB on the gasifier fan to patch a hole and some on the VW muffler to get it just right.

Take pride in the tools you were given.
Take joy in the tools you earned.
Stay curious KID.
Title: Re: Need some generator head info
Post by: squarebob on March 17, 2012, 08:49:35 PM
WE need pictures. We thrive on the visual...................

Bob
Title: Re: Need some generator head info
Post by: TimSR2 on March 17, 2012, 09:58:07 PM
Don't laugh guys.

When I was in high school the hands down fastest car in the school belonged to this hillbilly kid whose father was a retired mechanic.  For the record it was a 71 nova with a 400 small block. (but I digress)  We used to build our hotrods out of castoffs and leftovers and wrecking yard parts as there wasn't much money around.  The owner had found a nice set of 11 1/2 to one flat tops for  a good price, but they were .060 over, and he had a block that was bored .030.  So he hand milled them on an industrial belt sander until they had the right cylinder to wall clearance!  I was just completely offended, and told him it would never work.  It worked just fine, much to my chagrin.   

It was a legendary drag car, had 2 holley 600s on a tunnel ram and revved to 6500 all the time, every day.  4:10's in the rear and a 4 speed. Wild ride.   

The same car had the legendary "Langley Locker"  12 bolt rear end  ( 4 or 5 big sticks of 7018  at 150 amps, poured  into the spider gears in the rear end) .  But that's a complete other subject.     

Title: Re: I built one with a regular horizantal 6hp 3/4" shaft engine!
Post by: vdubnut62 on August 11, 2012, 09:51:20 PM
Quote from: seabattery on March 17, 2012, 09:29:21 AM
I got a 2.5kw generator head from ebay for $100 (including shipping)
Then I got a 6hp engine from Harbor Freight (also $100 on sale)

I clamped down the engine to a big trailer so it couldn't vibrate much while it ran.
I marked 3/4" from the end of the shaft with a sharpie. Then I marked 1/8" circle
from the 5/16" tapped hole in the end of the shaft.
I started the engine at low idle then I used an angle grinder with sandpaper
flap disk to shave the shaft conical at the end grinding down to the lines.
I bolted the genhead on to the motor and started it up. It ran perfectly. It has now been running daily for 3 months.
Email me at seabattery at gmail.com for pics/info if you want.



Hey this will work and very well too. I have a small air compressor that has been running for years using the  "run it and grind & drill till it fits" method of machining.
The motor shaft broke off even with the bearing. It's now running with an old 5/8 bolt finished in the way described above.
Ron