Mike Stirewalt wrote: > Anybody know if the flywheel alternators that are in the Great Plains > engines wear out with time? It seems my voltmeter needle is riding > around 11 volts instead of 12 with the engine at full RPM. It might be > my imagination.
See http://www.twinslan.net/~n0nas/manuals/onan/940-0751%20Onan%20NH%20(RV%20spec%20J-P)%20NHC,%20NHCV%20(spec%20E)%20Engine%20Service%20Manual%20(04-1987).pdf Pages 31 (starting at "30A synchro system) and 32 (testing) are all you need to test regulator and generator. I have this dumb-as-dirt single-phase system also, and it is surprisingly smooth voltage with zero EMI noise on the radio, or the rest of the system, best I can tell. Given that these use permanent magnets, it is certainly conceivable that they could lose their magnetism over time, but I wouldn't expect it to happen quickly. Regulator would be my first guess. Mark Langford ML at N56ML.com http://www.n56ml.com On 6/13/2016 3:02 PM, Mike Stirewalt via KRnet wrote: > Anybody know if the flywheel alternators that are in the Great Plains > engines wear out with time? It seems my voltmeter needle is riding > around 11 volts instead of 12 with the engine at full RPM. It might be > my imagination. > > If they DO wear out with time, what needs to be replaced? What wears? > > I just aborted a trip to La Paz because the voltmeter needle seemed to be > riding a little lower than it usually does. I didn't want to be coming > back across the border without a working transponder so I landed in San > Felipe and just came back home. Better safe than sorry. This alternator > situation worries me but it might be just fine and my imagination the > problem, not the alternator. It's got a lot of hours on it - the > flywheel alternator I mean - and am wondering if I've got a problem > developing. > > Thanks, > > Mike > KSEE > > > ____________________________________________________________ > Affordable Wireless Plans > Set up is easy. Get online in minutes. > Starting at only $9.95 per month! > www.netzero.net?refcd=nzmem0216 > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > >
