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JT3D Engine Question  
User currently offlineLH526 From Germany, joined Aug 2000, 2439 posts, RR: 13
Posted (6 years 9 months 2 days 19 hours ago) and read 5645 times:


can anyonegive me some details on the JT3D engine used in the B707? I'm looking for the exact 1st fan stage diameter and technical drawings of that engine.

Thanks a milion!


Trittst im Morgenrot daher, seh ich dich im Strahlenmeer ...
3 replies: All unread, jump to last
User currently offlineTdscanuck From Canada, joined Jan 2006, 12710 posts, RR: 78
Reply 1, posted (6 years 9 months 2 days 13 hours ago) and read 5557 times:

Quoting LH526 (Thread starter):
can anyonegive me some details on the JT3D engine used in the B707? I'm looking for the exact 1st fan stage diameter and technical drawings of that engine.

eBay has a JT3D manual for sale:

I suspect that would have a lot of what you're looking for.


User currently offlineEx52tech From United States of America, joined Dec 2006, 559 posts, RR: 1
Reply 2, posted (6 years 8 months 3 weeks 6 days 13 hours ago) and read 5299 times:

Quoting Tdscanuck (Reply 1):

He wants $250.00 minimum for that, while being a nice historic document, that price could really hinder someone.

Wish I could remember all that stuff, but it has been 20+ years since I overhauled and worked on one of those.

"Saddest thing I ever witnessed....an airplane being scrapped"
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2620 posts, RR: 25
Reply 3, posted (6 years 8 months 3 weeks 4 days 11 hours ago) and read 5068 times:

There's some good information here, but no drawings:


JT3D fan diameter is given as 53.1 inches.

The glass isn't half empty, or half full, it's twice as big as it needs to be.
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