Canadian_JOY
Well Known Member
A local EAA chapter member has installed a B&C permanent magnet alternator in his aircraft. This unit is similar to the SD-8 model popular on many all-electric RV's, however it is a 30-amp rated unit for installation on a Continental engine (gear drive, mounted on rear of engine case). The alternator works as advertised, except that it seems to cause his compass to literally spin at certain engine RPM settings. Since I've never had a chance to work with B&C permanent magnet alternators I thought I'd throw the question out to the more experienced users here.
Has anybody had similar problems with SD-8 or other PM alternators? If so, what's the cure?
These questions were put to Bill at B&C but we were surprised to find he had no response short of suggesting surrounding the alternator with a tin can or mu metal.
Thanks in advance for your considerate replies.
Has anybody had similar problems with SD-8 or other PM alternators? If so, what's the cure?
These questions were put to Bill at B&C but we were surprised to find he had no response short of suggesting surrounding the alternator with a tin can or mu metal.
Thanks in advance for your considerate replies.