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#21
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I flew today and got more info - good and bad. First, I took a good volt meter out and found that the I get 12.6 or so with main turned on (light load) and 13.25 with engine running. Seems the plugin cig lighter volt meter is also part thermometer :-). The 13.25 is reasonably constant when I vary the load. eg I turned on the landing lights( about 20 amps) and still 13.25v. So I look for the regulator to see if there is an adjustment and I CAN'T FIND THE REGULATOR. I was looking for a rectangular two inch by three inch by two inch metal box. Nothing. Sure thought it would be on the engine side of the firewall. Do you suppose that it is built in to the alternator? You can't get to the alternator very easily on my Archer so I didn't check it very well. Chuck Archer 2185B By the way, the flying today was GREAT. Smooth and clear. Flew over central Ohio where there was flooding a week or two ago and there is still water (and ice) all over. Hmmm, My solid state regulator has an adjustment under a screw that is removed. I believe it even has arrows to show increase/decrease direction. PaulaJay1 wrote: I have a voltmeter plugin in the cig lighter socket. It reads about 11.5 when I trun on the master. Reads about 12.8 after engine start and after an hour flight has worked up to maybe 13.7 or so. I plan on taking a known accurate meter out Sat to check these reading. My A&P says maybe the alternator needs rebuilt (at about $250). He says that the voltage reg is solid state and either works or not - ie no adjustment. I've had a couple of times when the bat needed a boost, so something is wrong. Any comments before I start throwing money at the problem. Chuck Archer 2185B |
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#23
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It has saved me a couple of times. Fully approved by two AIs.
Tyler wrote: Matt Whiting wrote: BTIZ wrote: well.. your original post did say "strapped up against the engine".. is part of the preflight to make sure the zip ties have not broken or gotten brittle? BT Yes, I'd be worried about carrying it in the engine compartment. Why not just carry it in baggage compartment? Matt Because from the baggage compartment you have to stretch it over the propeller to get it on (not likely!) - or remove the propeller :-) whereas if it's already between the engine and the propeller you just put it over the engine pulley, loosen the alternator, and put it over the alternator pulley. Tyler |
#24
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Those voltages you are measuring are normal, the output voltage of the alternator (13v-14v) is slightly higher than the battery voltage (12v±) so that it charges. BTW, what airport do you fly out of, Chuck? I flew today and got more info - good and bad. First, I took a good volt meter out and found that the I get 12.6 or so with main turned on (light load) and 13.25 with engine running. Seems the plugin cig lighter volt meter is also part thermometer :-). The 13.25 is reasonably constant when I vary the load. eg I turned on the landing lights( about 20 amps) and still 13.25v. So I look for the regulator to see if there is an adjustment and I CAN'T FIND THE REGULATOR. I was looking for a rectangular two inch by three inch by two inch metal box. Nothing. Sure thought it would be on the engine side of the firewall. Do you suppose that it is built in to the alternator? You can't get to the alternator very easily on my Archer so I didn't check it very well. Chuck Archer 2185B By the way, the flying today was GREAT. Smooth and clear. Flew over central Ohio where there was flooding a week or two ago and there is still water (and ice) all over. |
#25
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In article , "Mike W."
writes: BTW, what airport do you fly out of, Chuck? I64 |
#26
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Good background page on batteries: http://www.windsun.com/Batteries/Battery_FAQ.htm -- A host is a host from coast to & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 |
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