I was making an IFR departure out of Gatlinburg-Pidgeon Forge last month, ran into a little rain and noticed my battery was discharging at about -10 amps. I was able to cancel IFR and make it to Jackson TN on the big 35amp-hour battery in my 6A.
I pulled the cowl and got an A&P to look at it. Of course, it charged fine on the ground. The A&P thought it must have been the connector at the back of the Plane Power alternator and that we fixed it when checking for a loose connection.
I pulled the battery, charged it fully and headed back to Baton Rouge. Once again, the battery started discharging in the air. I turned off all the non-essential stuff and was able to make it home with enough juice in the battery to power the transponder and radio for my arrival into Class C BTR.
The problem seems to be that my 2 and a half year old fanbelt is worn and bottoming out on the flywheel pully. I've never heard any squealing and tightening the belt only works until shortly after takeoff.
I'm sure the "old hands" would have known what to do right away, but I was fooled briefly. Looks like 2 years is about all you get on those belts.
John
I pulled the cowl and got an A&P to look at it. Of course, it charged fine on the ground. The A&P thought it must have been the connector at the back of the Plane Power alternator and that we fixed it when checking for a loose connection.
I pulled the battery, charged it fully and headed back to Baton Rouge. Once again, the battery started discharging in the air. I turned off all the non-essential stuff and was able to make it home with enough juice in the battery to power the transponder and radio for my arrival into Class C BTR.
The problem seems to be that my 2 and a half year old fanbelt is worn and bottoming out on the flywheel pully. I've never heard any squealing and tightening the belt only works until shortly after takeoff.
I'm sure the "old hands" would have known what to do right away, but I was fooled briefly. Looks like 2 years is about all you get on those belts.
John