REFLECTOR: Alternator

[Wayne]

There is an old Contact Magazine  series by Paul Meisner wherein  he describes the Nippodenso and the Hitachi (I think) alternators on riceburner cars. Paul designed the command and control  systems on the Hubble  Telescope (not the optics).He describes where to cut  a lead so you can insert  overvoltage protection.  That is the main shortcoming  and only significant difference between auto and aircraft alternators. There are two other differences between A/C and automotive  alternators, the locking tabs on the bolts that hold the case together and if the auto alternator has an external  fan it may turn the wrong direction. Both kinds now use silver bearing brushes. A few old style aircraft alternators have heavier mounting fixtures for the diodes. 
My 90 amp riceburner  alternator  now has a trouble free 100 plus hours.
Wayne
  ----- Original Message ----- 
  From: HYTEC45 at aol.com 
  To: reflector at tvbf.org 
  Sent: Wednesday, February 01, 2006 4:45 PM
  Subject: REFLECTOR: Alternator


  I have my engine down for some "modifications" while it is the somewhat off flying time of the year.  I have been running a auto "who knows what" zone alternator for almost 500 hours.  I had to pick what I could at a local auto parts shop when I lost my alternator while going to OSK in 97.  I think that 500 hrs is enough for a alternator that cost $55.00.

  I have the B&C linier voltage regulator, so I want to stay with a alternator without a built in regulator.

  I can afford more than $55.00 ;-)  Any ideas as to a "airworthy" auto unit.  I have the large AS sheave on the existing alternator.

  Thanks for the attention,

  TEC


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