<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
>>
Yes, there are few cases where the 35 amp alternator is adequate for VFR
panels with no pitot heat but this is rare.  I selected the 65 amp
alternator for my L-360 because it is required.

So, how do you determine what sized alternator is required?  Do a load
analysis breaking down the loads into continuous and short term.  You will
be surprised how fast the amps add up.  In my case the continuous loads
added up to 50 amps and the short term to 67 amps for a total if everything
except the starter were running of 107 amps.

To compute the minimum size alternator take the continuous load and divide
by .80.  As you can see my alternator needs to be rated at 62.5 amps
continuous.  My Nippodenso 65 amp has been running great to date with no
problems and it is light weight and small too.

See page 196 of the LNN for several examples of Load Summaries.

JIm Frantz
Jim@angle-of-attack.com