Date: 17 May 97 15:15:50 From: firstname.lastname@example.org (Louis A. Ramsay) Organization: Netcom References: 1 2
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In <airliners.1997.1109@ohare.Chicago.COM> "Carl Peters, M.D." <email@example.com> writes: > >How were large radial pistons (eg. on a Connie, DC-4,6) started? The >starter would be electrical, but what was the source - the onboard >batteries vs. an external generator cart? On the L1649, we would use external power as long as it was available. One of our stations (McGrath) didn't have ground power available and they would leave No. 3 and No. 4 running while the passengers were deplaned on the left (normal) and the baggage and freight was removed from the belly. Only bad part was the propblast on the guy doing the baggage work - if the temperature was 40 below, the combination of the temperature and the propblast would drop the equivalent temperature down lower than 60 below. Summer was marginal as the batteries would give you a good start for one engine and then wouldn't have enough juice left to start another if the first one failed to strt. This was particularly bad if the temperatures were high enough to promote hard starting. Again, they would prefer to leave at least one engine running to take advantage of the generator rather than depleting the batteries. Wasn't so much the depletion of the batteries that was the major concern - it was the rather fast re-charging that could warp the plates and ruin the battery. Lou.