1337Delta764 From United States of America, joined Oct 2005, 6697 posts, RR: 2 Posted (3 years 2 weeks 3 days 10 hours ago) and read 3136 times:
Through the 737's history, Boeing used an IDG on the original 737, then went to a VSCF in the 737 Classic, but then went back to an IDG on the 737NG due to reliability problems with the VSCF at the time.
However, with recent advancements in VSCF technlogy (as it is used on the A380, 787, and will be used on the A350), is it possible that Boeing could return to a VSCF with the 737 MAX? A VSCF could offer some weight savings, which is why Boeing is using it on the 787 and Airbus on the A380 and A350.
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It's possible...it's an all new engine anyway so it's a descent opportunity to change the generators but the 737NG's IDG's have pretty impressive reliability now and, since they're not changing the fuselage/systems much, they probably don't need more power. It seems like risk for not a huge amount of gain.
Quoting 1337Delta764 (Reply 3): Okay, I guess I must be mistaken then. I read somewhere that the 737 Classic used a VSCF; that source must have been wrong.