Paul_L's Connoisseur 4F build

Discussion in 'Kits, Kit bashes & Scratch builds' started by paul_l, May 27, 2020.

  1. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    Looking good, it wouldn't have been difficult to remove the footplate beading and put it back. It just needs a bit of confidence. The beauty of solder over glue is that you can take it off cleaning it up and try again if you don't get it right first time.

    Don't get too carried away with the Ultrasonic cleaner, especially once you have the whitemetal castings on. I have read/seen inline reports where the ultrasonic waves have eaten into solder and WM castings leaving them a bit of a mess.

    I have just picked up my MOK 8F too. I started with making replacements for the tender brake cylinder and water scoop dome. Photos when I get chance.
     
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  2. gormo

    gormo Staff Member Administrator

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    G`day Paul,
    Well you must not rush these projects.....:avatar:....:thumbs:
    :tophat:Gormo
     
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  3. gormo

    gormo Staff Member Administrator

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    G`day Paul,
    I like the way this loco sits on the chassis.....I think it will turn out a nice looking loco full of character ......:thumbs::thumbs::thumbs::thumbs::thumbs:
     
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  4. paul_l

    paul_l Staff Member Administrator

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    10 months ago I said I would post up picks of the footplate mods to gain a bit of extra clearance.


    The two sides were opened up inside firebox by a couplr of mm. you can see the rough cut at the top.

    Bit more work done on the front end

    Side frame extensions. front cover plate with handles and the chest cover.




    Not sure if any more progress will be made for the next couple of days tho'.

    Paul
     
  5. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Coming on nicely Paul.

    Mine is in a very sorry state after being left languishing in the shed for too long. It all looks very neat ...... keep it coming ... you are almost there.

    Toto
     
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  6. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    Don't despair, it's recoverable. I have just picked up my my 8F which I started in 2010 and last touched in 2018. It will be finished before Easter.
     
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  7. paul_l

    paul_l Staff Member Administrator

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    Toto,

    I seem to remember your 4F was further advanced than mine, however next time your up bring it along and we'll form a plan of action. I know the tender is good to go, and you will need a new driving wheel axle, but it should be easily fixable, just may be dependant on the amount of elbow grease and cleaner involved.

    Paul
     
  8. paul_l

    paul_l Staff Member Administrator

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    Now, over the last week or so I have been playing with my new bested friend - my LRM Resistance soldering iron.
    I've had this for some time, but never got brave enough to use it on something other than test brass, which was always on the thick side, so never really showed its true potential.

    But boy am I impressed ........

    I use it in two ways, first grounded on a steel plate which is great for laminating parts together.

    Then secondly attached to the loco body - and this has been a game changer for me.

    Using the chassis retaining screw, I cut a scrap of brass with a hole in it to act as a clamp.


    My first victim was the boiler band adjacent to the fire box. As per normal I tinned the rear of the band with 145 solder using the normal iron. Then tagged one end to the under side of the boiler, which was fairly easy as the probe is used to hold the end in position before, during and after soldering. Ensuring the band was in the correct position, and maintaining tension on the band further tags were added. Once the final end was tagged, the tip was run over the length of the band to complete the soldering. The result required almost zero clean up. Previous boiler bands were troublesome, and required a lot of cleanup afterwards, not difficult but time consuming.

    Same for the lamp irons, on the tender I almost gave up on them using a standard iron.



    These were a doddle - bent and tinned with the standard iron.

    The located in position with the probe, hit the pedal as soon as you hear the sizzle, release the pedal - simples. The two pics above are without any cleanup.

    Final tasks were the steps and handrail for the front steps (which are actually in the center of the loco).



    Well according to the instructions that brass and nickel silver work completed. Time to start working on the detail parts.

    Paul
     
  9. paul_l

    paul_l Staff Member Administrator

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    Wow this boys bravery is moving to another level :whatever:

    White metal soldering, and whitemetal to brass / nickel silver and plated copper wire.

    Now the instructions say to use 70C whitemetal solder, I have some but not a great lover of it, so .....

    I used some 100C solder to secure the ventilater to the cab roof, then removed the pip and cleaned the whole lot up. (forgot the piccies :facepalm:)

    Again I used 100C to secure the cab roof to the cab front and sides.




    Now to hide / fill the joint soft wire (plated copper wire) is soldered into place, with plenty of extra solder to fill the gaps, this time I did use the 70C solder.



    Trimmed to length

    And cleaned up with fibre brushes and scalpels




    Starting to take shape.


    Paul
     
  10. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    I didn't realise that the cab roof was a casting on Jim's 4F, you learn something new every day.

    My RSU has a Croc clip on the earth lead. I have a steel plate but I have never used it. I prefer to clip the Croc onto the parts being soldered.
     
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  11. Mossy

    Mossy A classic grump Yorkshire man Full Member

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    RSU's have always looked like really useful bits of kit, but I don't do enough brass work to justify the cost. It looks like I will just have to soldier on with a gas torch. :thumbs:
     
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  12. paul_l

    paul_l Staff Member Administrator

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    I'd always fancied an RSU for over 30 years, but could never justify it. But with pending redundancy / early retirement with permission from SWMBO, I clubbed all my christmas money together to get it in preparation for all this free time I'm supposed to have :whatever:. Uptil now I hadn't really used it seriously :facepalm:

    Now a wee competition - nae prizes - lived in Scotland too long and passed through Yorkshire getting here :avatar:

    [​IMG]

    Above (as stated at the start of this thread) is my victim.

    Now, I have two domes and chimneys's to pick from

    The original Midland Pattern


    Photograph has the Chimney backwards so that the capuchin is less noticable.

    And later Stanier types


    Which ones look nearest to the prototype ?

    I will need to drill the firebox to later mud plugs and clamps.

    This starting to get serious :twitch: :eek: :whatever:

    Paul
     
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  13. chigley

    chigley Full Member

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    hello Rob, i hope you protect the piece your joining, those teeth can do a lot damage. Rob Bishop said if you want to use croc clips file them down:thumbup:

    Ken
     
  14. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    Hi Ken,

    No teeth on mine, it was like that when I got it. - I was lucky enough to have been given it.
     
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  15. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    I would say that they look to me like the later Stanier type.

    The dome has a flatter top than the Midland pattern one and I am not convinced that the chimney has a Capuchon unless you have a better photo that shows it?
    I question it because if it was fitted backwards it would stop it from doing what it was designed for - preventing down draughts when in motion. Unless it spent most of it's life running tender first...
     
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  16. paul_l

    paul_l Staff Member Administrator

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    Cheers Rob

    That was my guess, especially with the later mud plugs and clamps. I placed the Midland Chimney with the Capuchon towards the rear as the prototype photo didn't look like it had a Capuchon.

    Time to start polishing up the Stanier whitemetal castings.

    Gives me time to fit the handrails - or in this case really should be called hand pipes..

    Paul
     
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  17. Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    Although its a different loco, I just checked 44422's photos and it does not have a Capuchon either.
     
  18. Rob Pulham

    Rob Pulham Happily making models Staff Member Administrator Feature Contributor

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    Sorry, I thought you were referring to the prototype photo having its chimney on backwards.
     
  19. paul_l

    paul_l Staff Member Administrator

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    Well it does have a rear cab on the tender so you never know, or maybe the Caley and Highland engineers thought the 4F was a backwards move from thier preferred loco types :avatar:

    Paul
     
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  20. paul_l

    paul_l Staff Member Administrator

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    A bit more progress

    Started on the handrails as they were next in the instructions - Hey Toto, seemingly you're supposed to follow the instructions in numerical order, now that's a novell approach :avatar:

    Jim of Connissuer, is a proponent of copper split cotter pins. I've not really used them in O gauge before - in 4mm they always seemed oversize hence my prefference for handrail knobs. However these have tuned of quite nice, and for my future reference certainly cheaper in price than hand rail knobs.

    Firebox and Smokebox holes were drilled 0.8mm clearance for the split pins.

    The handrails are made from brass tube and 0.7mm wire. The split pins are too small for the tube, and too large for the 0.7mm wire.
    On the wire the split pin is placed on the wire then nipped tighter with a pair of pliers.
    For the tube, the split pins were enlarged by inserting one leg of the taper nosed pliers. Once large enough to thread on to the tube, they were nipped to size as per the wire.

    The right hand side is the simpler, the tube was cut to length, then a length of 0.7mm wire was soldered into each en of the tube.
    Split pins added then the fun part of getting them all into the holes. A secured with solder - then the enevitable clean up.


    The left hand side has an injector casting as part of the assembly, but essentially the same process, but this time 100C and 70C solders were used to secure the castings.
    100C solder to tin the brass / nickel-silver, 70C solder to attach the whitemetal castings.


    While doing this a couple of time I managed to bend the steps, each time at the middle step on the half etch portion. Now this was probably my general clumsy nature, but this had potential disaster written all over it, so I decided to brace the rear with a piece nickel silver from the etch sprues.


    I dont bend now ......

    Paul
     

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