1/25 scale radiator braces for a Mack R600: Adding the pieces AMT didn't provide!

Radiator braces are a visible part of the engine bay on a Mack R model, but are one of the detail pieces AMT didn't provide on their "Mack R685ST" kit.
0:05 Underhood views of trucks with similar engine to the kit (ENDT 675, aka "237") shows the X shaped radiator braces that attach to radiator tank and cab firewall.
0:45 Truck with "tip turbine" Mack engine ("285" or "315") has one leg of X omitted, presumable for clearance around the additional air intake piping, but is otherwise similar.
1:02 AMT's instructions show brace for intake pipe but not radiator...
1:13...while MPC's DM800 and DM600 Macks do provide X-shaped radiator brace parts. Interestingly, the MPC kits were on the market a few years before AMT's offering.
1:25 Brackets to go on radiator tank start with Evergreen 5/32" H column which gets a 1/16" hole drilled in web, close to one of the flanges.
1:48 Cut a piece .270" long with hole in middle...
1:58...then cut one flange (the one farthest from drilled hole) off to make a T shape.
2:15 Filing round notch in one flange...
2:24...rounding other corners...
2:32...filing away outer portions on opposite flange to leave a square centre section...
2:42...then rounding off that square projection's outer corners creates basic shape of cast bracket which bolts to radiator tank.
2:53 Fastener detail can be added with styrene rivet heads or nut/bolt/washer castings.
3:10 Glue brackets to radiator tank near outer corners.
3:29 Brackets on cab firewall begin with K&S Metals 1/32" x 3/32" brass strip. Drill .032" diameter hole at one end...
3:43...then cut off 1/4" long piece and clamp in vice with 1/8" projecting. File material from both sides...
3:55...to create a projection approx. 1/32" wide x 1/8" long. This projection does not have to be perfect...
4:06...as it will be glued into a slightly oversize (1/16" diameter) drilled hole in cab firewall. Use gap filling CA ("superglue") to attach.
4:38 O scale model railroad turnbuckles are used to make the clevis ends that attach to radiator.
4:51 One turnbuckle = two clevis ends that are glued to .030" diameter styrene rod.
5:13 Fitting for other end of brace begins with 1/16" diameter K&S Metals aluminum tube. Flatten one end approximately 1/8" long...
5:27...file this back to 3/32" long and drill .032" diameter hole in centre of flattened portion. Round off outside corners...
5:38...and cut off .150" long.
5:49 Four aluminum tube fittings, four clevis ends and four pieces of .030" diameter styrene rod are needed.
6:02 Glue .032" diameter brass rod into one of the aluminum fittings with .020" projecting to represent bolt head.
6:13 Slide this subassembly up from bottom side of one cab bracket, angling fitting toward opposite corner of radiator.
6:24 Trim styrene rod to length, insert into aluminum fitting and glue clevis to radiator bracket.
6:35 Second aluminum fitting goes on top of cab bracket, and similar procedure is used to trim rod and glue clevis to radiator bracket. A drop of thin CA glue is used at each connection (styrene rod to aluminum fitting and brass rod to aluminum fittings and cab bracket) to secure everything at this end.
6:58 If brass rod is a loose fit in cab bracket, hold bottom fitting in place with self closing tweezers for this initial assembly step.
7:12 Radiator brace installed with only things left to do being addition of round plate at centre of X and trimming off excess .032" wire.
7:30 Round plate is .010" styrene disk punched with 4.5 mm diameter punch (largest one in the Micro-mark set) and decal rivets added for fastener detail. Wire pins cut off with track cutting pliers to get smooth, square cut, leaving .020" projection to represent bolt head.
7:59 Touch up painting with fine brush completes addition of this detail item.
#scalemodeltrucks
#scalemodelling
#modeltrucks

Пікірлер: 19

  • @THROTTLEPOWER
    @THROTTLEPOWER5 ай бұрын

    Very nice🤜🤛 Hope you have a great New Years!!!! 🎊🎉

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    5 ай бұрын

    Thank you - happy New Year and "happy modelling" in 2024.

  • @THROTTLEPOWER

    @THROTTLEPOWER

    5 ай бұрын

    @@brsnorthernhorsejourney3579 🙂👍

  • @iancameron198

    @iancameron198

    4 ай бұрын

    ​@@brsnorthernhorsejourney3579 Do you know anyone that makes truck decals. I used to work for Saunders leasing and worked on the IH 4070 transtars. I,d like to get some decals like the trucks I worked on

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    4 ай бұрын

    Modeltruckin.com is where I have purchased some decal sets over the years, he may be worth reaching out to. If Saunders decals are not in the selection it may be possible to have something made if a suitable image is available. Looking at Saunders Leasing I found photos of red and green lettering on white background, as another option those could be printed on white decal paper with inkjet printer using a basic CAD program or similar graphics software if you wanted to tackle making your own.@@iancameron198

  • @benbowles1014
    @benbowles10145 ай бұрын

    Very neat touch, mate!

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    5 ай бұрын

    Thank you, rad braces were an easy to add detail item to AMT's kit, even the MPC ones could be replaced with scratch built if you wanted to as they are a bit simplified.

  • @ruanecrummett9261
    @ruanecrummett92615 ай бұрын

    Great video thanks

  • @grahamc7283
    @grahamc72835 ай бұрын

    A great video to end the year. Lots of good food for thought for detailing any model. Season's best Wishes. Cheers, Graham

  • @erichb4021
    @erichb40214 ай бұрын

    Great video👍🏼 I like your channel very good tutorial for model truck builder,s just getting in to the hobby.✌🏼

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    4 ай бұрын

    Great to see you getting into the hobby, new interest in model building is the future of the hobby. A small disclaimer is in order: Warning! Model truck building can be habit forming! It can even draw you back into the hobby many years later...😀 As a youngster my favourite model building areas were trucks, model railroading and armour. Admittedly it was more "glue bombing" than real real model building back then however putting model trucks, trains and tanks together provided many hours of enjoyment. It was usually one kit at a time, I remember reading the line "One evening, while reviewing my shelf full of kits.." in Phil Jensen's book "Building Model trucks" and being envious of his having so many kits on hand. Following high school I followed what seems to be a common path, drifting away from scale modelling for many years. Model railroading was "rediscovered" in the early 2000's, and my model truck interest started up again around 2010 when I saw reissues by Round 2 of kits I had built back in the 70's and 80's - and some I had never built but knew of, because even by the early 80's some truck kits had been discontinued. Something of a kit buying frenzy ensued for a couple years - now I do have a "shelf full of kits" to work with!

  • @markshobbybench
    @markshobbybench5 ай бұрын

    I love your detailing for the various parts on trucks. Have you given any thought about doing a multi-part build of a single truck, including your detail tips?

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    5 ай бұрын

    I would like to produce something of that nature, biggest challenge for me is being such a slow builder (along with "modeller's A.D.D." of course!) Another 1/25 scale Mack R600 project comes to mind as a topic for a more in-depth video, I drove the 1:1 scale version for a few months back in early 1994. It would involve frame stretch, combining parts from several kits (AMT Mack "R685ST" as the starting point, tip turbine engine from the Cruise Liner kit, and sleeper from either GMC General or Transtar 4300.

  • @crushingvanessa3277
    @crushingvanessa32775 ай бұрын

    I have to watch your stuff more. You see trucks a lot more than I do. Are those Revell tires you used on this Mack correct to real ones? I just ask because of the nibs around the outside edge of them. I used these before but took a nail clipper to all the nibs.

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    5 ай бұрын

    I think the front tires are fairly accurate to a Michelin steer tire, I went with these on the front for the rib tread. Italeri tires were used on drive wheels, although they do say 12.00 R20 on sidewall the 1/24 to 1/25 scale difference gives them same outside diameter as the Revell tires. Good tip with removal of the nibs around outside edge, will give that a try next time I use the Revell tires up front.

  • @crushingvanessa3277

    @crushingvanessa3277

    5 ай бұрын

    @@brsnorthernhorsejourney3579I never saw those nibs before, that's why I took them off. They did look better to me, just preference I guess. I think they would be called nibs.

  • @crushingvanessa3277
    @crushingvanessa32775 ай бұрын

    One other question, where Macks available with driptroits from factory? I guess from the first R models on?

  • @brsnorthernhorsejourney3579

    @brsnorthernhorsejourney3579

    5 ай бұрын

    I think that is correct regarding Detroits being available in Mack R's, not very common but they were built. Seems like they needed the longer 700 series hood to fit Detroit power. Here is an early (flat back cab, steel dash) example kzread.info/dash/bejne/aYd_z9Bmj6vclpM.html 1977 with Silver 92 kzread.info/dash/bejne/fZZ9u8-nYLOuoaw.html And another early (flat back cab, steel dash) one pulling a wheelstand with load of logs! kzread.info/dash/bejne/p5h5kpOfe8W9c84.html

  • @crushingvanessa3277

    @crushingvanessa3277

    5 ай бұрын

    @@brsnorthernhorsejourney3579I just saw on some forums that it was mentioned they came with them. I like the last one with the logs, looks like it had sage burner pipes underneath since it was kicking up so much dirt from the exhaust.

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