3 brush generator specs

Do I just have a generator that's eaten it's wheaties or what? Battery does not boil much, except if running 8+ hours straight at high RPM. Just wondering for curiosity's sake.

Thanks,

Pete

And if your voltmeter is ennywharrs close to accurate, your 7.2 volts without the engine running is indicative of a semi-discharged 8 volt battery. (hint: real 6 volt batterys have ONLY 3 water caps, 8 volters have 4 water caps).

And yes, you can semi-charge an 8 volt battery with the 9N's 3rd brush 11 amp genny. But you can NEVER fully charge an 8 volt battery because the genny internal gutts was designed for about 7.2 volts MAXIMUM no matter where you adjust the 3rd brush.

And as a general rule, using an 8 volt battery in a 6 volt system for eazier starting is only "masking" tired engine problems..... ....Dell

Yea, I thought 7.2 was a bit high too, although I didn't know the 2.1 v/cell number. It is indeed a 6v battery, a New Castle group 1HD, new last year. My meter is a Fluke digital, don't know the model, but I don't have any occasion to disbelieve it. One possibility is that I measured the battery immediately after shutting down from brush hogging about 4 acres (long time running full-throttle) to be sure it was full charged. Do wet cells show a higher voltage for a short time after removing a charge, or do they immediately go right down to battery voltage?

Other ideas I had is what if someone put a 12v generator on at some point and I've just got it cranked way way down? I could fire the tractor up and remove the wire, then measure voltage at the generator output post with the circuit open, but if I understand right a 6v generator should show high voltage under a disconnect condition.

Like I said, everything is running fine but it just didn't sound right. Thanks for your expertise.

Pete

Not certain to what to make of your 7.2 volt reading. What is it after "resting" overnite? Checkitt before you startup the next time.

And NO, its NOT LIKELY that anyone has "converted" your 3rd brush genny to 12 volts. That would be a MAJOR electrical parts re-build/re-design.

I am concerned about your reported 10 amps charge, thats TOO MUCH. You will BOIL your battery dry and warp and short out your plates. Dead battery, not good. 'course you could turn your headlights on and use up some of the "excess amps" (grin).

The again, you're ammeter's calibration could be suspect, they're not "laboratory grade". They usually "loose amps" NOT gain amps. But I think 10 amps is too much. Unfortunately, I don't have anyother ideas..... .....Dell

Checked the battery after sitting shut down for about 2 days -- 6.28 V Just like it's supposed to be. I guess there must be some sort of lag time for the voltage to 'relax' to base battery voltage.

I'm now wondering about the accuracy of the dash ammeter. My Fluke 77 current setting is only capable of 10 A, so I don't think I better try using that to check; I guess I'll see how much a new post-style ammeter is at the Napa and if not too much wire it in temporarily to compare readings.

Thanks for your expertise.

Pete

I send my FLUKE,(tm) meter to the factorie, annually, for recalibration. The factorie will put a calibration label on the meter.

Sometimes, this will make the difference in doing battle with the utility companies for a customer.

So, thanks. Maybe the "New Castle" battrie is actually mfg. by DOUGLAS, Charollette, NC.

If I want my water pump to deliver approx 1.5 gph. at a rate of "blank" rpm's, what size pulley should be on a 1725rpm, 1945 vintage maytag electric motor. Oh yea, the pulley on the pump is much larger, 'bout 12 inches, maybe 16, I think.

Let's see: The formula was: driven pulley divided by rpm's X's driving pulley divided by gal. per hr. equalls: 3 inch pulley on the ole maytag Does this sound 'bout wright?

Now bout the belt length: driven pulley divided by pies of someth'n times driving pulley all over divided by , anyhow this will be close to the 4L056 class A bel t out there in the shed.

Well at depth of 32 feet should provide adequate to fill one of my 55 gal drums, solar heated to temp of 96.5 F. This water, same as the water used to water the mules that were on this property during the 1st day's battle some time ago, should be adequate to shower with in the outhouse that I plan on constructing for in the back yard. By turning in my older brother, the local twsp. GAVE me a permit for my outhouse!~Have a great day?

Any formulas that are accurate for any of the computations above, please forward.

John

Even though I was never "qualified" to enroll there, I would buy the books at their bookstore. I would Study them while operating Boeing equipment on LONG LEGS over the "Pond" on our way to places like ROTA, Spain, Thule, and other places that don't exist anymore.

Princeton was another option. Got to know the president. Almost gave this person a lot of family money, but then something broke and needed some more SEARS credit.

Anyhow, I will post some machinist info. from time to time. Maybe some of the young'ns on this forum might want the formulas to attach to thier tool-box lids. cAN Score points working on the boss's stuff!

By the way, the copyrights expired on these data sheets right after the WAR OF 1812.