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      Andrew


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      Post #69210, posted on 01-29-2018 GMT-5 hours    
      As the title says just wondering....787 engines

      Is the engine casing he same for both engines. How about dimensions?
      For some reason I thought I'd seen drawings from Jennings comparing both. Maybe it was the 777

      Reason I'm asking is I'm tackling an Air Canada 787-900 and it has GE engines. I know the fan blades look different as compared to the RR. How about the rest.

      Thanks for any info guys.

      now where are those AA 787s lol

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      Andrew
      CYYZ

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      BruinPrideBand


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      Post #69211, posted on 01-29-2018 GMT-5 hours    
      The Pylons are different for sure.

      https://limitlesslimits.files.wordpress.com/2015/01/engines.jpg

      Chris

      "Sorry Goose... But it's time to buzz the Tower."

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      Andrew


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      Post #69212, posted on 01-29-2018 GMT-5 hours    
      Great photo reference

      Thanks Chris

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      Andrew
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      LH707


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      Post #69213, posted on 01-29-2018 GMT-5 hours    
      The fans are different, the reverser tracks at the bottom are bigger on the GE, and the shape is subtly different in other ways. Which kit are you planning to start with?

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      Post #69215, posted on 01-30-2018 GMT-5 hours    
      Well I have the Zvezda 787-900 and was planning to use the Braz GE engines with the photoetch fan.

      I have run into some major issues with the casting / shape of the Braz engines.
      I'm still trying to figure something out and will post photos later today.

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      Andrew
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      Andrew


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      Post #69226, posted on 01-31-2018 GMT-5 hours    
      Sorry for the large photos.

      The Braz 787 GE engine set is generally very well done but one issue.......

      Engine cowlings are not round like intake cowling piece.

      In order to use fan blades (resin or Photetch) you have to use intake lip provided.

      I checked the RR intake cowling from the Zvezda kit and it fits the warped Braz cowlings almost perfectly. It is a smaller diameter than the Braz (GE) intake cowling so won't fit fanblades.

      I may have to grind down the Braz Cowling and it may be very difficult to maintain a nice shape. With the calipers it measures a difference of 2+mm. between cowling and intake piece all on one side

      I did up checking another set I have and it was a little better but cowlings are still oversized


      Thoughts ,comments ideas please




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      Andrew
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      Post #69246, posted on 02-01-2018 GMT-5 hours    
      Andrew, have you tried un-warping the resin intake lip by dropping it in hot water and bending it back? I use ~80* C water, drop it in for 10 seconds, then bend it.

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      Andrew


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      Post #69248, posted on 02-01-2018 GMT-5 hours    
      After further work and examination it looks like the outside shape is realtively correct. Problem is it doesnt match front intake lip piece. Hence the 2+mm difference.

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      Andrew
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      LH707


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      Post #69256, posted on 02-02-2018 GMT-5 hours    
      That's a bummer....

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      Andrew


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      Post #69272, posted on 02-03-2018 GMT-5 hours    
      On our way almost fixed.

      Second Braz set is workable with minimum grinding of cowlings required.

      Now I've taken RR pieces from the kit and dropped the GE photoetch blades into them. Next.....






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      Andrew
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      Post #69273, posted on 02-03-2018 GMT-5 hours    
      Just for fun here are the Kit RR engines I finished a long while ago. They turn out rather well in the fit etc.




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      Andrew
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      LH707


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      Post #69288, posted on 02-04-2018 GMT-5 hours    
      Those look really nice! I was about to comment that the RR and GE should spin in opposite directions, but then I looked it up and the 787 engines both spin clockwise when looking into the fan. On earlier generations, they spun in opposite directions. I learned something today....