Originally Posted by redneck eating humble pie
Trent 700 Dry weight: 4,785 kg (10,549 lbs)
Trent 1000 Dry weight: 5,765 kg (12,710 lb)
Trent XWB Maximum dry engine weight: 7277 kg (not including fluids, nacelle and aircraft interface parts)
So basically, you are WRONG unless the 7000 ends up sinificantly lighter than the 1000 (XWB got heavier). Add to that, the strengthening required in the wing to have a larger engine, and the airplane gains weight. That's it and that's all.
The numbers below (and previously stated) are from the EASA certification document for each engine, not Wikipedia.
Whoever wrote the Wikipedia entries like you does not know the difference between a basic engine and a dry engine. The Wikipedia entries would be close to the basic engine weight for each. For the Trent 700 that would be the dry engine minus the nacelle, intake, cowl doors, CNA and thrust reverser. The Trent 1000 includes the nacelle as part of the basic engine weight (the Trent 700 does not), that is what gives the appearance of being heavier when in fact the whole pod (dry engine) is lighter.
See page 5 EASA Trent 700 TCDS
http://www.easa.europa.eu/system/fil...2-29112013.pdf
5. Dry Weight: Dry engine weight (kg) 6160
(Not including fluids and Nacelle EBU)
See page 7 EASA Trent 1000 TCDS
http://www.easa.europa.eu/system/fil...4-10092013.pdf
5. Dry Weight:
Engine Models
Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, Trent 1000-H
Maximum dry engine weight (kg) Without SB 72-G319 5936
With SB 72-G319 6033
Including nacelle EBU items certified as part of the engine but not including fluids.
Engine Models
Trent 1000-A2, Trent 1000-C2, Trent 1000 D-2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, Trent 1000-L2
Maximum dry engine weight (kg) 6096