Class 26 Build

Discussion in 'Kits, Kit bashes & Scratch builds' started by paul_l, Jan 8, 2019.

  1. SBt

    SBt Full Member

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    The addition of the 1/2 etch lines in the cantrail will help get a better curviture and the cab interior bulkheads can be used to assist the fold. The top of the cabs need to be pulled in gentley but that's actually quite easy with carefull use of long nose pliers.
     
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  2. York Paul

    York Paul Staff Member Moderator

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    Thanks Steve, yes I'm looking forward to getting my teeth into the production builds. :thumbs:
     
  3. Toto

    Toto Staff Member Founder Administrator

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    I'll bring them down when I come down for the show Paul. Hopefully Dundee will remember the former. :facepalm::avatar: The white metal should follow reasonably soon after that once I've had my visit to Grahams two weeks later.

    Toto
     
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  4. York Paul

    York Paul Staff Member Moderator

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    Dundee has just got to add something onto to the former... some sort of clamp I gather, I was a bit tired to take it all in last night but basically the plan sounds good. I'll get the bench cleared of equipment and leave the big mag lamp so there is plenty of room and light to work.
     
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  5. paul_l

    paul_l Staff Member Administrator

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    Been busy the last few days - feels longer, modifying the bulkheads, to include the handrail recesses. York Paul found the construction of these three parts troublesome trying to keep them all aligned.

    Hand here is the result

    This is where the bulkheads fit


    The original design was flat and prone to warping - something to be wary of with resin printing as the finished print are soft until fully cured. To counter this I also added additional supports to the rear, this and adding the pockets at the side stiffened the whole printed part.




    Perfect fit anyone would think I measured up the parts :whatever:

    Paul
     
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  6. Toto

    Toto Staff Member Founder Administrator

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    Excellent
     
  7. York Paul

    York Paul Staff Member Moderator

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    That's nicely simplified the bulkhead and rear handrail pocket assembly and overcome the warping issue at the same time :tophat:
     
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  8. paul_l

    paul_l Staff Member Administrator

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    York paul advised doing the chassis frames before fitting the body ..... so here we go

    There is a upper and lower side the the chassis, the lowerside has the half etch around the edge.

    Lower side

    Upperside - no half etch around the edge

    First to be fitted is the buffer beam, these were cut off the frets and cleaned up. The chassis was also pinned down to a flat stell sheet with magnets.


    The buffer beam was gently bent to shape


    Then tag soldered in the center


    Then the two ends, finally ran the seam between the dots


    Repeat for the other end.

    Next up the bogie bearing plates

    Again with the chassis held flat additional magnets were used to help hold the side frames in place


    Then each end was tagged in place


    And again a fillet ran along the length, the second side was added




    This was repeated for the other end.



    These provide vertical surfaces to help retain the side frames

    These were gently tagged in place - holding a soldering iron too long in one place would cause the side frame to expand and bow.

    I found the best way after tagging the side frames in place, was to run the soldering iron tip along the chassis main frame, with the edge of the tip touching the side frame.



    Next up was to fit the bogie bolster tops.


    There are two locating tabs in the middle, that the top fits over.
    The top has half etch lines and slight bends were made to the plate.


    I first soldered the centers, then held the ends in place on the side frames and solderd them. The completed the solder along both sides.
    Much filing later



    And there's more .........
     

    Attached Files:

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  9. paul_l

    paul_l Staff Member Administrator

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    Next the cross beams for holding the Water and fuel tanks were soldered in place, following the diagram in the instructions

    View attachment 13032

    The note is for the Class 27 which has an additional lower height cross beam - not required on the Class 26 (the confussing bit for me was I had the wrap as part of the standeard etches, but no reduced height beam, remember I have the Class 26 and this is the proto type build.


    Next the support plates were added to the buffer beams, I didn't add the cross beam here as Yorkie found it restricted the bogie movement.

    After all this. it is still flaf,and all the holes line up with the skeleton



    and the body


    Time for a well deserved brew

    Paul
     
  10. Toto

    Toto Staff Member Founder Administrator

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    Coming along nicely. Amazing how quickly it goes together.

    Toto
     
  11. York Paul

    York Paul Staff Member Moderator

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    Great work and great progress there Dundee, we seem to have made the same conclusions on this part of the build. I do think those bodyshell curves need annealing to get on nice flowing curvature otherwise that will throw you out on the rest of the build, cabs in particular.
     
  12. SBt

    SBt Full Member

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    Good work guys - quick reminder of the 24/25 development side - few questions raised over the weekend and a couple of suggestions? Feedback on respective thread please ta! :thumbs:
     
  13. Toto

    Toto Staff Member Founder Administrator

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    These horrendous big long solder joins on the long thin brass etches are a nightmare. They are a common theme on a few loco kits and could be changed to a fold up section with half etch.

    They are on the 15, 16 and 17 as well. Possibly some of the others too. I want to design these out going forward. It will maybe mean reorganizing etches but would certainly make the build easier and possibly aid in giving a neater overall result. ........ take that as a hint of what's to come Steve ...... :avatar:there are maybe other parts that can be joined together and lend themselves to folding as opposed to soldering. If it means less efficiency with the number of etched sheets ..... So be it. lets investigate the possibilities.
     
  14. Toto

    Toto Staff Member Founder Administrator

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    Hi Steve, I'll get a look tomorrow.

    Thanks for the reminder. Could you summarise the points that you have attended to to date as you have been beavering away there.

    Cheers

    Toto
     
  15. SBt

    SBt Full Member

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    I'll have a look at those as the designs move on. Nothing's impossible.

    I'd like to get at least the Class 24/25 Bogie finished this week and into the etchers with ideally the Class 24 as well?
     
  16. Toto

    Toto Staff Member Founder Administrator

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    Myself and the Paul's will be together on Friday night and can maybe use that time to ok these for sending out to the etchers by the weekend.

    Would I be correct in saying that the 15, 16 and 17 use the same bogie arrangement ?
     
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  17. Andy_Sollis

    Andy_Sollis Full Member

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    I have access to D7672 / 25322 if any photo refs are required?
     
    Last edited: Apr 16, 2019
  18. SBt

    SBt Full Member

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    The 15 and 17 Share the Type 1 Bogie - the Class 16 is different being a development of the 10800 one.
     
  19. Toto

    Toto Staff Member Founder Administrator

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    I'll keep that in mind Andy. I'm just looking ahead a little but when these kits come into play, we'll maybe give you a shout. :thumbs:
     
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