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cduluk
Topic Author
Posts: 12
Joined: Thu Mar 17, 2011 10:12 pm

JT8D variants for MD80/Super727 - need opinions!!

Tue Jan 10, 2017 5:00 pm

Hi all:

I need your input and specs for the JT8D engines on the MD80 and Super 727.

I collect 1:400 aircraft models, and am in the process of converting a regular 1:400 B727 to a Super 727. To do this, I need to swap the #1 and #3 JT8D-100 engines with JT8D-200 engines from the MD80. I need a 1:400 MD80 to serve as a donor model.

The problem is that only two "model manufacturers" make the MD80 in 1:400, but the engines aren't the same size. Either one of the model manufacturers messed up, or they both did. I need your help picking the correct one.

I'm posting this in the tech/ops section because I'm looking for actual real-life dimensions of both the JT8D-100 engines (for the 727) as well as dimensions for the JT8D-200 engines of the MD80. I was able to google "fan diameter" but not the actual cowling diameter. I also can't find length dimensions from cowling-reverser bucket. Can you guys help me with that info?

Here are some pictures comparing the two model manufacturers' renditions of the DC9-51, and MD-80, compared to images of the real thing. The DC9-51 engines are of the correct scaled size and it's used for reference.

Which manufacturer (GeminiJets, or JET-X) do you think has the correct JT8D-200 engine size? I feel like the GeminiJets model is WAY too wide, while the Jet-X is too short.

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What do you think? Can you guys help me find actual engine dimensions so I can simply divide by 400 and measure it? ANY and all input is appreciated!!
 
VSMUT
Posts: 5068
Joined: Mon Aug 08, 2016 11:40 am

Re: JT8D variants for MD80/Super727 - need opinions!!

Tue Jan 10, 2017 5:34 pm

Just curious, could you make a comparison shot with a 727 and an MD-80 placed end-to-end too?
 
cduluk
Topic Author
Posts: 12
Joined: Thu Mar 17, 2011 10:12 pm

Re: JT8D variants for MD80/Super727 - need opinions!!

Tue Jan 10, 2017 9:24 pm

Here are more pictures comparing the two MD80s to a 727.

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cduluk
Topic Author
Posts: 12
Joined: Thu Mar 17, 2011 10:12 pm

Re: JT8D variants for MD80/Super727 - need opinions!!

Tue Jan 10, 2017 9:58 pm

I pulled the GeminiJets engines off of the MD80 and put them on a 727 to give me an idea of what it would look like. Is it just me, or are they WAY too big?

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User avatar
tb727
Posts: 2261
Joined: Thu Jun 30, 2005 1:40 pm

Re: JT8D variants for MD80/Super727 - need opinions!!

Wed Jan 11, 2017 2:21 am

Too big.
Too lazy to work, too scared to steal!
 
Dalmd88
Posts: 3164
Joined: Fri Jul 28, 2000 3:19 am

Re: JT8D variants for MD80/Super727 - need opinions!!

Wed Jan 11, 2017 4:23 am

The JetX looks about right. I think the Gemini are way to big.
 
User avatar
richcam427
Posts: 141
Joined: Tue Feb 28, 2012 1:55 pm

Re: JT8D variants for MD80/Super727 - need opinions!!

Wed Jan 11, 2017 5:39 am

Jet-X for sure. What you've got going there with the other one is almost like a 727 with MD-90 engines (*cough* wouldn't it be awesome *cough*)
 
LH707330
Posts: 2416
Joined: Fri Jun 15, 2012 11:27 pm

Re: JT8D variants for MD80/Super727 - need opinions!!

Sat Jan 14, 2017 1:31 am

I'd advice cross-posting this on airlinercafe.com, I'm sure a few of the posters there can help you with the answer.
 
bhill
Posts: 1883
Joined: Thu Sep 13, 2001 8:28 am

Re: JT8D variants for MD80/Super727 - need opinions!!

Thu Jan 19, 2017 9:54 pm

...bit it WOULD haul ass!!
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