Tangowhisky
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B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 12:08 pm

The PW 2000 and RB21-535 series engines were both offered on the B757. in terms of reliability, maintenance costs, and sfc, does anyone know where each engines stands? and does one have a better resale value over the other for an older 757?
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worldtraveler
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 12:11 pm

What do LCCs have to do with 757 engine types? Perhaps you can clarify your title.
 
Tangowhisky
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 12:17 pm

Quoting WorldTraveler (Reply 1):

WorldTraveler, I mean Life-Cyle-Cost. Never striked my mind that LCC also stands for low cost carriers (who happen to care dearly about life cycle costs).
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tepidhalibut
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 4:11 pm

Quoting Tangowhisky (Thread starter):
terms of reliability, maintenance costs, and sfc, does anyone know where each engines stands?

I believe that PW2037 has a better "Brand New" SFC, but that advantage is quickly lost through deterioration.
In terms of reliability, mx costs and on-wing life, I believe that the RB211-535E4 is the hands-down winner.

As an aside, I've often wondered why the Tu204 hasn't picked up more western operators. A comparable aircraft to the B757, but at half the price.
 
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kc135topboom
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 5:36 pm

The RR RB-211 series offered on the B-757s do have a much lower maintenance cost and can stay on the wing much longer than the PW engines can. The RRs also have a higher thrust rating.

The PW 2037 and 2040 series offered on the B-757 cost less and have a lower SFC than the RRs. But they also offer less thrust and higher maintenance costs.

Now LCCs that have operated these engines on B-757 models include ATA (RR RB-211s on both the -200 and -300), Song (PW 2040 on the -200), and National (RR RB-211s on the -200). There may be others, but those are the first LCC operators of B-757 models that crossed my mind.

I might add that UPS operates B-757-200PFs with both engines. IIRC the first 20 or so B-757s they bought are equipped with PW-2042s, and the last 20-25 airplanes they bought came with RR RB-211-535E2s.
 
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PM
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 7:43 pm

1049 757s of all models were built. 617 (59%) had RR and 432 (41%) had PW. RR therefore outsold PW 3:2.

Of the 56 original customers, 4 ordered both engines, 40 chose RR and 12 chose PW.

Each engine has its advantages but it seems that the market preferred RR.
 
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kc135topboom
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 9:02 pm

Quoting PM (Reply 5):
1049 757s of all models were built. 617 (59%) had RR and 432 (41%) had PW. RR therefore outsold PW 3:2.

Higher thrust and lower maintenance costs are a big seller.
 
Tangowhisky
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 9:51 pm

Does the PW 2000 series have FADEC? I know that the RB-211-535 does not have a FADEC, but has an EEC and a hydromechanical FCU. It is amazing that even without the FADEC, the RB211-535 Mx costs are lower. Where and what are the high Mx cost items of the PW2000?
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KL808
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 9:59 pm

Why is it that we don't see a GE powered B752?

If there where plans which engine would it have been? CF6?

Drew
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Alitalia744
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 10:06 pm

Quoting KL808 (Reply 8):
Why is it that we don't see a GE powered B752?

If there where plans which engine would it have been? CF6?

Drew

GE was originally developing an Engine for the 757, I believe AA and AZ were on board at the time.
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RE: B757 Engines: LCC Differences PW And RR

Tue Jul 25, 2006 10:08 pm

Quoting Alitalia744 (Reply 9):
GE was originally developing an Engine for the 757, I believe AA and AZ were on board at the time.

It was even ordered - I believe by one of the Hawaiian airlines? But I think I read somewhere that it wasn't really optimised for the 757 and neither Boeing nor GE could see much future in it so it was dropped.