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Generators / Re: Stamford generator head
« on: March 02, 2017, 02:04:09 AM »Firstly, HR parts will not even come close to fitting your SR... so that stamping must be erroneous.
Secondly, Do not try to alter your output voltage by changing generator speed. Your unit should be adjusted for either 1500rpm 50Hz, or 1800rpm and 60Hz at the engine governor. Once that setting is achieved, then you would go to the finer adjustments on the AVR control to get your output voltage adjusted within your desired range.
dieselgman
OK thanks Diesegman,
It does talk (in the manual) about adjusting the transformer air gap..but I don't know where that would be...I know where the transformer is...but can't see any gap to adjust. Unless it's the gap , between the top of the transformer and the top laminate steel plates...other then that..I don't know...And the only reason that I thought..maybe slowing down the engine would work is..I don't really know if the motor is actually , doing 1800 rpm..don't have a tack.
But when I tested both legs they where at 131 volts.
Would it hurt anything running at this voltage. It's used for my shop, so skill saw, air compressor (5hp running) ,welder (older)....
I know..I don't know a lot about gen heads, but it's something I need to learn about..and quickly! My ST10 Kw went down last night, so I put the Honda 5000 on charge duty..well that did work so well. Too small, but it worked , sort of. Got the ST10 , up and running today...bad brush..replace and good to go. But if the AVR goes south I don't know how to test..or bypass, if I could, and the rectifier well I guess you can see what I'm going though.
I know the basics ...how a generator works winding, field , but when it come to the AVR...I thought they where best used on a gas gensets to let the engine know that the load has increase..so up the engine rpm to compensate for rpm lost. And on , and on...need to find some more good info,on how to work on and test a generator.
I'm new (only 5 years off grid) so lots to learn. If I could weld it, make a fiberglass mold and part, rebuild an old 350 small block...take a transmission apart and rebuild it, I'm guessing that I could..hopefully..learn a little more electrical how to. I hope..
And the SR and HR head thing...I knew I should have taken a pic...before I put new valve gaskets down....I just knew it LOL, what first brought it to my attention, was the heads where different, the one is just a little longer than the other, and the injectors where different, one was as, all the rest I have on my SR motors and the other was not like the other 5 spares I have.
If the weather stay good I'll take it back apart and get some pics and the injector too. I've never tried to post pic on here, but I can link some if required.
Thanks for all the help
Cheers
Brian