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      gebbw


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      Post #51071, posted on 12-10-2013 GMT-5 hours    
      I've got an half built RAF Hasegawa Tristar that I'm gonna convert to the 'proper' size for the RAF tankers, this model is one I started building about 10 years ago then discovered it was not the right type for the RAF aircraft, so it sat on the shelf gathering dust.

      So what to do? These are the changes I will be doing:

      1) Shorten by 6 windows in the front
      2) shorten fuselage by 2 windows in the back
      3) Blunt down the wing-to-body fairings in the front
      4) Blunt down the wing-to-body fairings in the back
      5) make a intake fairing thingy for the number two engine
      6) lengthen the main wings a bit.

      anything else?

      Oh, BTW it will be ZD951 as

      1, that aircraft was here in NZ in 1987 (the first time I ever saw it)
      2, that aircraft was at RIAT2013 (most probably the last time I will ever see it).

      George

      George
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      scotty100368


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      Post #51072, posted on 12-10-2013 GMT-5 hours    
      George,

      5) It was called a Frisbee Fairing and used to reduce noise. It prevents the boundary airflow from suddenly seperating around the earlier pylon shape, which created a lot of noise about the rear cabin.

      Also, remove any hint of a tailskid and housing. http://www.tristar500.net/specifications.htm

      Scott.

      Scott Garard
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      NX28388


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      Post #51075, posted on 12-10-2013 GMT-5 hours    
      You'll also need to revise the hot sections of all three engines. The Hasegawa parts represent an earlier, longer tailpipe, but all -500s I've ever seen carried the shorter exhaust seen on just about every L-1011 after the late '70s/early '80s. Not a difficult modification, but definitely noticeable.

      Jodie Peeler

      "In any dispute the intensity of feeling is inversely proportional to the value of the issues at stake." - Sayre's Law

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      Jennings


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      Post #51078, posted on 12-10-2013 GMT-5 hours    
      You make that sound so easy George. Sort of like doing brain surgery. It's easy once you learn how!

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      gebbw


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      Post #51080, posted on 12-10-2013 GMT-5 hours    
      Thanks Scott, and ah yes thanks Jodie, forgot about the engines. Yup J, sounds easy, but it's more a case I'm the mad professor and the product will end up a Frankenstein. So far I already made one cut in the wrong place... doh!

      will chuck up a few pics soon to show y'all.

      George

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      Caravellarella


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      Post #51084, posted on 12-10-2013 GMT-5 hours    
      You would also have to increase the angle-of-attack/incidence of the wing-mounted engine nacelles......

      Terry (Caravellarella)

      Because LíOR…AL keeps telling me Iím worth it..........

      Or maybe itís MAYBELLINE...............

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      gebbw


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      Post #51093, posted on 12-11-2013 GMT-5 hours    
      Thanks Terry, didn't know they were like that but have found a few pics showing quite clearly.

      George

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      Bill-ay


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      Post #51094, posted on 12-11-2013 GMT-5 hours    
      This may help George: http://airlinercafe.com/forums.php?m=posts&p=49704#49704

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      gebbw


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      Post #51107, posted on 12-12-2013 GMT-5 hours    
      Cool thanks Billy. Below are some progress pics.

      I chopped out the front and back sections:


      At the back I made the the cut thinking I could work around the fairing but realised that was a bad idea. So I stitched up the cut and re-cut just under the intake. I think it is a better place to cut because I need to re-shape the aft fairings anyway. Quite a bit of shaping and filling to do...



      I've started on re-shaping the the fairing at the front. Luckily the plastic on this kit is fairly thick, so I am trying to avoid cutting through if I can, saves on filling.



      Have glued the sections back together and made some wing extensions. Already it looks much better than it did before.


      Next up, I will make the "Frisbee fairing" (Thanks Scott!) and fix up the engines.

      George

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      Post #51111, posted on 12-12-2013 GMT-5 hours    
      Quote
      gebbw :
      Thanks Terry, didn't know they were like that but have found a few pics showing quite clearly.

      George



      Excellent work George; don't forget that the RB-211-524 engine intakes had a sharper lip radius too (but I do not know if this applied to the centre-engine intake too)......

      Terry (Caravellarella)

      Because LíOR…AL keeps telling me Iím worth it..........

      Or maybe itís MAYBELLINE...............

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      gebbw


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      Post #76092, posted on 06-29-2020 GMT-5 hours    
      Bump...reviving this old buidl thread I started...back in 2013!

      7 years later and I rescued this model from the shelf of doom (for the second time). I never liked the blocked no. 2 engine intake, so off with the tail and some re-work.



      Used a bit of aluminium tubing for the intake, and joined it with a cut-down sharpie case. Yes I know it's not "curved" but its good enough for what I want. Plus it looks way better than it did before.





      Got this little guy to help put it back together...


      It needs a tidy up around the intake entry but overall I was quite please it turned out OK.



      Next I had to make a Frisbee Fairing, so I used a bit or styrene to made a wedge. When the glue had set I cut it down to fit it.


      The next step was to sculpt the fairing, this was a little tricky but I persevered until the shaped looked ok to the eye.


      Once the putty has set, just was a matter of filing and sanding.


      I have given it a spray with some guze paint I had lying around, I thought it was matt, but no. But overall, this model which was originally destined for the dustbin, is starting to come back to life.


      Next steps are to get the work done on the engines to shorten the hot sections. I'll try not to let another 7 years pass...

      George
      Auckland
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      gebbw


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      Post #76093, posted on 06-29-2020 GMT-5 hours    
      Update:

      I found my Frisbee fairing was slightly off-center, and it was annoying me, so off with its head!



      I will get to work on another. Hopefully will be able to get the repair done tonight.

      George
      Auckland
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      RB211-524


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      Post #76095, posted on 06-29-2020 GMT-5 hours    
      Hello,

      Impressive conversion, I like the way you did the frisbee fairing, even if you are redoing it. I am surprised the plastic is thick to the point you could sand off the wing-body fairing, that is a good point. Todays kits fuselages are much thinner (economics?) and such work would imply backing with plastic sheet.

      I never had a Hasegawa TriStar kit, is it as accurate as their 747 and DC-10 kits ?

      I always loved the shorty TriStar, odd-looking in a good way, IMHO just like the 747SP.

      Cheers, Stephane

      Frankensteined :
      Zvezda 767-400ER, 787-10, Tu-204-300, Heller A321-200
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      FLYHY


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      Post #76096, posted on 06-29-2020 GMT-5 hours    
      The #1+3 engine fairing also had a modification on the front where it met the leading edge of the wing.

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      rhusberg


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      Post #76098, posted on 06-29-2020 GMT-5 hours    
      Nice work on the conversion!!

      I'm glad I have one of the Platz conversion kits in my stash

      Happy modelling,

      Ruben
      www.lndecals.com

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      aro757


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      Post #76099, posted on 06-29-2020 GMT-5 hours    
      That's going to look really nice. What scheme? White or all-gray?

      Regards,

      ahmed

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      gebbw


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      Post #76106, posted on 06-30-2020 GMT-5 hours    
      Thank you all for the comments.


      @RB211-524: I believe the Hasegawa kit is accurate, though it comes with the early long type RR exhaust nozzles


      @FLYHY
      : I looked at a few pictures on the net, to see what you meant about the fairing, but I couldn't quite see in various photos. Can you provide a link to a photo? But I may not bother doing it, I'm guessing in 1/200 scale it won't be prominent.


      @Ahmed: Its going to be the white scheme with the refueling probe above the cockpit.

      After re-making the Frisbee fairing, I have to wait until the putty has cured, so I started on the engines:


      George
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      Tango-Bravo


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      Post #76107, posted on 06-30-2020 GMT-5 hours    
      Quote
      Jennings :
      You make that sound so easy George. Sort of like doing brain surgery. It's easy once you learn how!



      Don't know where you 'learned how' George... The pictures make the complex conversion you are doing look easy in spite of admitting you made a cut in the wrong place... which reminded me of another Jennings quote, pertaining to shortening/lengthening a fuselage: "measure twice and cut once." (from at least one of his Liveries Unlimited decals having options to do different variants of a basic type, ala 737NGs)

      Todd
      BJI