http://groups.yahoo.com/group/FLY-UL/ Ultralight And Sport Pilot Aviation Sat, 21 Nov 2009 16:06:24 GMT Mike Smith http://groups.yahoo.com/group/FLY-UL/message/84107 http://groups.yahoo.com/group/FLY-UL/message/84107 Thanks Roger and Mark. Correct, the actual RPM does drop on both mag checks, but the gauge jumps up 400 RPM when one is grounded and drops about 50 when the Fri, 20 Nov 2009 20:28:44 GMT mark47620 http://groups.yahoo.com/group/FLY-UL/message/84106 http://groups.yahoo.com/group/FLY-UL/message/84106 ... Use your ears to decide if the engine drops the same for both mags. Often, the Tach will drop or even increase when one CDI is shorted out. mark Fri, 20 Nov 2009 14:37:41 GMT ROGER MILLS http://groups.yahoo.com/group/FLY-UL/message/84105 http://groups.yahoo.com/group/FLY-UL/message/84105 Mike, You identified TWO symptoms. The RPM gauge is not supposed to go up unless the engine does. The way you said it implies that the engine RPM did not Fri, 20 Nov 2009 14:23:14 GMT Mike Smith http://groups.yahoo.com/group/FLY-UL/message/84104 http://groups.yahoo.com/group/FLY-UL/message/84104 Thanks for all the suggestions, gave me a couple more things to check before ordering the regulator. One thing not mentioned though is the interaction with Fri, 20 Nov 2009 12:34:09 GMT Jay D http://groups.yahoo.com/group/FLY-UL/message/84103 http://groups.yahoo.com/group/FLY-UL/message/84103 You can use a digital thermometer to find loose connections in a fusebox. Any hot spots found with a digital thermometer can be tightened and drop the temp and Fri, 20 Nov 2009 09:08:58 GMT Roger Poyner http://groups.yahoo.com/group/FLY-UL/message/84102 http://groups.yahoo.com/group/FLY-UL/message/84102 Poor connections can cause fuses to blow.  It causes the rectifier/regulator to overcharge.  If the fuse is between the regulator and the bad connection it Fri, 20 Nov 2009 05:31:01 GMT flybellaire2004 http://groups.yahoo.com/group/FLY-UL/message/84101 http://groups.yahoo.com/group/FLY-UL/message/84101 Ah.. on second thought! LOL My post about battery terminals IS valid for measuring the connections and finding potential corrosion.. however.. it would not Fri, 20 Nov 2009 05:20:36 GMT flybellaire2004 http://groups.yahoo.com/group/FLY-UL/message/84100 http://groups.yahoo.com/group/FLY-UL/message/84100 Some good answers already.. but depending on where you measure the voltage makes a difference.. when things are not "as they should be". The fully charged Thu, 19 Nov 2009 23:49:12 GMT Richard Williams http://groups.yahoo.com/group/FLY-UL/message/84099 http://groups.yahoo.com/group/FLY-UL/message/84099 Mike S, If the battery is not dead or near to it, then the voltage should not go beyond 14.x volts when charging the battery. When the voltage goes way up, I Thu, 19 Nov 2009 23:10:42 GMT Roger Poyner http://groups.yahoo.com/group/FLY-UL/message/84098 http://groups.yahoo.com/group/FLY-UL/message/84098 Sounds like the regulator but check and make sure you have a good ground to the engine before you replace it. ________________________________ From: Mike Smith Thu, 19 Nov 2009 19:56:40 GMT Mike Smith http://groups.yahoo.com/group/FLY-UL/message/84097 http://groups.yahoo.com/group/FLY-UL/message/84097 Hi All, I seem to remember a similar discussion in the past but can't find it in the message archive. I recently noticed that my battery wasn't getting Wed, 18 Nov 2009 14:51:25 GMT flybellaire2004 http://groups.yahoo.com/group/FLY-UL/message/84096 http://groups.yahoo.com/group/FLY-UL/message/84096 Hi Group, I'm on a lot of groups, and have yet to be able to find ANY useful information when I have tried to use the MESSAGE SEARCH FUNCTION, or the ADVANCED Tue, 17 Nov 2009 02:38:19 GMT John Jones http://groups.yahoo.com/group/FLY-UL/message/84095 http://groups.yahoo.com/group/FLY-UL/message/84095 These are nice people to work with if needing any metal .. Will cut to length needed and ship almost same day.. Web site list lots of info on Aluminum and Mon, 16 Nov 2009 19:26:20 GMT GeoB http://groups.yahoo.com/group/FLY-UL/message/84094 http://groups.yahoo.com/group/FLY-UL/message/84094 jerry! Thanks for the great reply! ... It is all recreation for me. ... Yeap. I don't want the earth to rise up and smite me. ... Yeap. I am not sure if there Mon, 16 Nov 2009 13:30:43 GMT mark47620 http://groups.yahoo.com/group/FLY-UL/message/84093 http://groups.yahoo.com/group/FLY-UL/message/84093 ... I've given rides where the pas never knows when we leave the ground,,,,,,very smooth and can't feel the touchdown either. If it's turbulent, then the