trijetfan1
Posts: 1098
Joined: Sun Feb 01, 2004 5:29 am

Why Do Manufactors Skip Series?

Wed Feb 04, 2004 8:45 am

Why do manufactors skip series? For example why isnt there any 757-100 767-100, 777-100, and A-340-400.
Earned PPL June 26, 2007
 
bobrayner
Posts: 2038
Joined: Sun Apr 27, 2003 8:03 am

RE: Why Do Manufactors Skip Series?

Wed Feb 04, 2004 9:04 am

Why do manufactors skip series? For example why isnt there any 757-100 767-100, 777-100, and A-340-400.

It's just a number. It doesn't mean anything. The manufacturer might choose a particular sequence of numbers to symbolise something or other, or to emphasise some discontinuity in products, or just because it looked nice.
Cunning linguist
 
FedExDC-10
Posts: 183
Joined: Tue Aug 29, 2000 7:53 am

RE: Why Do Manufactors Skip Series?

Wed Feb 04, 2004 9:07 am

LOL. Ya ever heard the old adage, "Never fly on the A-model of anything"?
Actually, I believe that in some cases it's so they can introduce shorter versions if they'd like.

Cheers
FedExDC-10
 
HaveBlue
Posts: 2108
Joined: Fri Jan 30, 2004 3:01 pm

RE: Why Do Manufactors Skip Series?

Wed Feb 04, 2004 9:07 am

The 757 was originally planned in Model 757-100 short-fuselage and the 757-200 long-fuselage variants. The launch customers all opted for the RB211 engines, and the short variant was then dropped.

The 767-100 was originally planned as a 180-passenger shortened model, but it too was cancelled.

Not sure about the Airbus, but possibly the same reason?

[Edited 2004-02-04 01:08:26]

[Edited 2004-02-04 01:09:27]
Here Here for Severe Clear!
 
trijetfan1
Posts: 1098
Joined: Sun Feb 01, 2004 5:29 am

RE: Why Do Manufactors Skip Series?

Wed Feb 04, 2004 10:00 am

I am not so sure for the shorter version thoery. The 736 is smaller than any other 737 series. And the 734 is larger than the 735 and 736 series. Good point however. Maybe Boeing did not think of that when they made the first 737 and just went in order when they wanted to make the smaller version.
Earned PPL June 26, 2007
 
FlagshipAZ
Posts: 3192
Joined: Sun Jan 28, 2001 12:40 am

RE: Why Do Manufactors Skip Series?

Wed Feb 04, 2004 10:15 am

How can the 762 be any shorter than it is now? The existing wing would be too big on a shorten fuselage. I can see a shorten 752 tho...maybe 10-20 feet off the fuselage. The 772 could probably be shorten by 10 feet as well. But I'm not an design/structural engineer so I'll leave it to the experts at Boeing.  Wink/being sarcastic As for the A340-400...it did exist, but was quickly dubbed the A340-8000. Named for the 8000 mile range it has. Supposely only a few were built for the rich oil folks in the Middle East. Regards.
"Beer is living proof that God loves us and wants us to be happy." --Ben Franklin
 
User avatar
yyz717
Posts: 15689
Joined: Mon Sep 10, 2001 12:26 pm

RE: Why Do Manufactors Skip Series?

Wed Feb 04, 2004 10:33 am

In the mid-70's the 721, 731 & 741 all become very unfashionable with airlines.....orders stopped and the -200's became the base model. Hence, Boeing decided to name the initial versions of the 757/767 as -200's to increase their marketing/selling appeal.

I dumped at the gybe mark in strong winds when I looked up at a Porter Q400 on finals. Can't stop spotting.