AH64Bennett

I have not done an annual battery capacity check but you’re right. I fly a lot of IFR, usually 10 - 15,000. The backup system is part of a larger plan for a solo circumnavigation. The wiring and the panel has been done. I had the long range tanks installed in July. I really want redundancy for crossing the Atlantic but even more so for the Pacific crossing. I like the idea of the B&C alternator, thank you @KSMooniac. I’m going to see about obtaining a 337 approval to add one in place of the vacuum pump.

I have removed the vacuum system, so a vacuum pump replacement alternator would be nice. I have the battery backup for G5 but not G3. I’m pulling around 9 amps full power. The ALT light in precipitation flashed with incandescent landing light, torpedo “burn your hand” interior lights, led nav lights and panel running.

I’ve got a 1965 M20E with full Garmin glass, G3X, G5, GTN650xi, GFC500, GTX345 remote, GNC 215. I’ve have the the PlanePower alternator system installed. This last weekend over 4 hours of IMC in precipitation I saw the ALT light flash twice. Currently having the belt tension adjusted but that got me thinking about a second electrical system. Has anyone installed a second battery, second alternator… etc. I love the systems and am wondering the possibilities for redundant electrical.

I posted about the upgrade and avionics available in the pre-J model forum but this is what the new panel looks like from Monarch Aviation in Defuniak Springs, FL. I’ve had Carl work on my 1965 M20E for 15 years and I recommend him with the highest regard. The installation was superb and you cannot find better customer service! Steven

I’ll also say that the worst part of the upgrade is seeing how well the GX3, GTN 650xi and GFC 500 can fly compared to hand flying. I’ve completed about 10 hours cross country so far. It is absolutely better than anything you can imagine. I didn’t get the yaw damper but it flies great just needs a little right rudder on climb or it’s about 1/4 ball out of trim. I don’t mind holding it in as I still get to participate in the flying…. A little. It’s truly amazing system!

Greetings everyone, this is my first post but I’ve been on the site for about 15 years. I’ve owned 1965 M20E, N5605Q for 15 years and just did a complete full Garmin Glass cockpit upgrade and removed all the steam guages and Accutrack autopilot system. I have an operational Mooney engine cluster along with a Brittain auto pilot system that was fully functioning. The control unit was refurbed by brittain in 2015. Additionally I have a KX155 and indicator and KX175B that are now just setting in a box. I replaced the vacuum retract for the step with the electric conversion. I have a complete operational set of bellows for the step and controls. Monarch aviation in Defuniak springs, Fl did the upgrade and Carl told me that Brittain offered to sell everything to him so parts are going to get hard to find. If anyone needs or wants, let me know. You can PM here or call or text me at 770-362-7621. I’m hoping to re home these parts to someone that needs them. Steven