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Permalink Reply by Douglas Binder on October 11, 2022 at 9:02am

It seems to me that the crowbar is a safety device to prevent an over voltage condition if the VR fails.  I have a suspicion that your crowbar is toast and I think you may be better off with it completely disconnected.

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Permalink Reply by Joe Donohue on October 11, 2022 at 11:36am

Luckly It wasn’t toasted. The wire going to ground was. I tried running it without the crowbar, no tach or alternator. I replaced the wires from crowbar to ground and the master switch. It works, I flew it home a little over 6 hours but I will replace it. After I landed at home there was oil all over the bottom of the plane, broken thru bolt #5 cyl. Most expensive trip I’ve ever had

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Permalink Reply by Bob Johnson on October 14, 2022 at 10:11pm

The crowbar should be opening a fuse or circuit breaker, not smoking a ground wire. I'd check the wiring of that circuit.

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Permalink Reply by Joe Donohue on October 15, 2022 at 9:48am

Bob your absolutely correct

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Permalink Reply by Tim Jones on March 1, 2023 at 12:19pm

I'm late to the party, but I stumbled across the AVC1 while looking over various B&C offerings.   I note it is not listed as compatible with the Jab alternator.  The Technical Manual states  "Alternator Stator winding overheats when pushed too hard (incompatible with shunt-type regulator)."

I inquired further and B and C indicated at some point they would like to make a Jab compatible variant, but there are other higher priority projects that they are focusing on at the moment.

One of the reasons my progress is so slow is I spend too much time reading about all the amazing aviation goodies out there ...

Focusing on avionics installation now ...

Tim

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