1/14 Grader Caterpillar 12F

[fuchs301]

Because I saw some graders in this forum, I want to show you the grader, which is currently on my workbench: it is a Caterpillar 12F. The original was build until 1973 and it was the last one with a mechanical controlled blade. The scale of my model is 1:14.

My model is based on a 1:50-model of this grader from Gescha and a original brochure from the cat 12F. Additional I found a lot of pictures of this grader in the internet.

I started with the blade. For movement of the blade I used a Faulhaber-motor with a planetary gearbox (dia. 10mm).

Here some pics:

http://farm8.staticflickr.com/7060/6798353716_3e66c38f5f_b.jpg (http://www.flickr.com/photos/62091573@N08/6798353716/)


http://farm8.staticflickr.com/7195/6798187906_87056295fb_b.jpg (http://www.flickr.com/photos/62091573@N08/6798187906/)


http://farm8.staticflickr.com/7182/6944468637_d79d5b883e_b.jpg (http://www.flickr.com/photos/62091573@N08/6944468637/)


http://farm8.staticflickr.com/7189/6944468825_4d8294a340_b.jpg (http://www.flickr.com/photos/62091573@N08/6944468825/)


http://farm8.staticflickr.com/7203/6798355684_08ef2dae2e_b.jpg (http://www.flickr.com/photos/62091573@N08/6798355684/)


http://farm8.staticflickr.com/7041/6798354734_a735a202b8_b.jpg (http://www.flickr.com/photos/62091573@N08/6798354734/)


http://farm8.staticflickr.com/7043/6798187662_39eae062a5_b.jpg (http://www.flickr.com/photos/62091573@N08/6798187662/)


http://farm8.staticflickr.com/7185/6798187414_4df39f33a7_b.jpg (http://www.flickr.com/photos/62091573@N08/6798187414/)


http://farm8.staticflickr.com/7183/6798354138_0750485050_b.jpg (http://www.flickr.com/photos/62091573@N08/6798354138/)


http://farm8.staticflickr.com/7200/6798186804_d8d3df17e8_b.jpg (http://www.flickr.com/photos/62091573@N08/6798186804/)

[doodlebug]

Wow!!!!!! Outstanding start for your grader!
Cheer's, Neil.

[kerst]

Beautiful work!

[9W Monighan]

I like gearboxes!! Very nice job on the moldboard assembly!!

[JensR]

Welcome Chris,

finally the graders are taking over the world! =)

Cheers
Jens

[SmallHaul]

Very nice work! Thanks for sharing.

[RCLogger]

It is crazy the models that are being built around the world. This is another build that I will be watching.

WOW

greg

[sparkycuda]

Gears, u-joints, shafts, bearings - they are beautiful things! The 12F was a cool machine just because of all the linkage and stuff. Looks great and am looking forward to see this one drag some dirt.

Ken

[rc_farmer]

Wow, welcome Chris and thanks for posting pics to another great build. Gotta go get some more popcorn :D

[Espeefan]

Oh my goodness! I think I just had to pick my jaw off the floor. When I scrolled down to look at the rest of your pictures, I could have swore the very first photo looked like a 1:1 blade assembly, sitting there, in mint condition. Wow. Grader builds are getting popular here! That's fine by me. The quality of these builds is mind boggling! Yours is no different. Incredible work and craftsmanship!

[Lil Giants]

Not only is the popularity of road graders being built is surprising, but the extremely exquisite engineering & machining is like never before seen in a functional radio controlled model!

A great introduction Chris and welcome to forum. :cool:

[D8R]

Another nice grader build. Have had 2 Cat 212, very funny to drive, guess running a model is just as fun. Those small precision motors with gearbox is very powerful. Velcome to the forum.
Dan

[Brian in PA]

Beautiful!! Man you got skills!

[td9clyde]

awsome work!!!!

[tc1cat]

Outstanding work!! CNC machining- I presume- at its best. Taking the added time to sand or bead blast the parts adds to the professional look of the build.:D:D

[fuchs301]

Thank you for your friendly comments and your compliments.

Yes, most of the parts are done by my self-made CNC-routing machine. But additional I needed a 3D-CAD-system. Without CAD I could't do this quality.

Actually my grader is in a much more advanced status like shown this pics. In the next days I will update you step by step up to the current status.

[Stefan]

WOW!!!!!

I´m speechless. The finish of your work is really incredible. It just oozes quality.

Stefan

[Hemi1966]

I must agree with everybody, it looks great:). Nice to see older mechanical operated grader too.

[fuchs301]

Here are the next pics: the front axle.

The wheel camber is only adjustable by hand, not by R/C. In this case, for me a scale appearance was more important…and anyway, there is no space within the frame to add any additional movement equipment.

The black oil hoses are only dummies.

http://farm8.staticflickr.com/7044/6949954941_02d7a04761_b.jpg (http://www.flickr.com/photos/62091573@N08/6949954941/)

http://farm8.staticflickr.com/7200/6803844602_ce56cfd3c9_b.jpg (http://www.flickr.com/photos/62091573@N08/6803844602/)

http://farm8.staticflickr.com/7057/6803845770_13f29cf9dd_b.jpg (http://www.flickr.com/photos/62091573@N08/6803845770/)

http://farm8.staticflickr.com/7197/6803846044_9024835439_b.jpg (http://www.flickr.com/photos/62091573@N08/6803846044/)

http://farm8.staticflickr.com/7199/6949956485_6cfddf749d_b.jpg (http://www.flickr.com/photos/62091573@N08/6949956485/)

http://farm8.staticflickr.com/7183/6949956259_bc4790bb77_b.jpg (http://www.flickr.com/photos/62091573@N08/6949956259/)

[modelman]

Outstanding machine work!! Looking forward to more pictures.

[fuchs301]

here comes the next pics: the frame, some gearboxes and a video from the first test moving the blade:

http://farm8.staticflickr.com/7198/6806500692_aa31b9dd61_b.jpg (http://www.flickr.com/photos/62091573@N08/6806500692/)

http://farm8.staticflickr.com/7069/6952612125_1a6ff88911_b.jpg (http://www.flickr.com/photos/62091573@N08/6952612125/)

http://farm8.staticflickr.com/7188/6806505020_cc2d00a785_b.jpg (http://www.flickr.com/photos/62091573@N08/6806505020/)

http://farm8.staticflickr.com/7196/6806504510_5ac0bcda91_b.jpg (http://www.flickr.com/photos/62091573@N08/6806504510/)

http://farm8.staticflickr.com/7185/6806506024_1d01583dc6_b.jpg (http://www.flickr.com/photos/62091573@N08/6806506024/)

http://farm8.staticflickr.com/7194/6952619373_e003ab0a52_b.jpg (http://www.flickr.com/photos/62091573@N08/6952619373/)

http://farm8.staticflickr.com/7069/6952619879_88c1baa636_b.jpg (http://www.flickr.com/photos/62091573@N08/6952619879/)

http://farm8.staticflickr.com/7044/6806471738_d02a9cfcdf_b.jpg (http://www.flickr.com/photos/62091573@N08/6806471738/)

http://farm8.staticflickr.com/7203/6806475040_e0aeb4edd0_b.jpg (http://www.flickr.com/photos/62091573@N08/6806475040/)

http://farm8.staticflickr.com/7036/6806534222_bdc4cafb58_b.jpg (http://www.flickr.com/photos/62091573@N08/6806534222/)



...and here is the youtube-links to the video :

http://www.youtube.com/watch?v=uoA8lS4G920

[td9clyde]

nice work works really good very impressive for the size too keep it up this is going to be a cool build

[ihbuilder]

:eek: Chris , that is sweet :eek: I like all your little gear boxes ;)

[Jared]

That's really cool! Where's the motor for the circle turn mounted? Inside the frame?

[fuchs301]

@Jared,

yes, the motor (Faulhaber-motor with planetary gearbox, dia. 12mm) is inside the front frame. Here is a bottom view of the front frame. The movement goes about 3 little gearboxes:

http://farm8.staticflickr.com/7045/6806507420_ff58ce75d9_b.jpg (http://www.flickr.com/photos/62091573@N08/6806507420/)

[Espeefan]

That is very cool! Love the gearboxes. On the plus side, you'll have no hydraulics to worry about, which will be nice.

[fuchs301]

On the plus side, you'll have no hydraulics to worry about, which will be nice.

Hi Nathan, that's why I love the mechanical solutions of such oldtimer...

[fuchs301]

Here is the last part of the update: the powertrain.

The hole powertrain unit is fixed with 4 screws at the bottom of the rear frame. I decided to use no differential.

At present I am at the unloved job of lathing the rims.

http://farm8.staticflickr.com/7051/6962218771_c8a767592a_b.jpg (http://www.flickr.com/photos/62091573@N08/6962218771/)


http://farm8.staticflickr.com/7189/6816101064_536a760435_b.jpg (http://www.flickr.com/photos/62091573@N08/6816101064/)


http://farm8.staticflickr.com/7055/6962220053_c201690807_b.jpg (http://www.flickr.com/photos/62091573@N08/6962220053/)


http://farm8.staticflickr.com/7036/6962220493_d3d3ea4960_b.jpg (http://www.flickr.com/photos/62091573@N08/6962220493/)



an here a bottom view from the powertrain. Later I will close the gearbox with a cover plate.


http://farm8.staticflickr.com/7042/6816102874_f1cfab6c8e_b.jpg (http://www.flickr.com/photos/62091573@N08/6816102874/)

http://farm8.staticflickr.com/7183/6962219715_e8f4c110ae_b.jpg (http://www.flickr.com/photos/62091573@N08/6962219715/)


http://farm8.staticflickr.com/7047/6816101536_1d6b9daecf_b.jpg (http://www.flickr.com/photos/62091573@N08/6816101536/)


http://farm8.staticflickr.com/7057/6962221573_b4e25e43f6_b.jpg (http://www.flickr.com/photos/62091573@N08/6962221573/)

[9W Monighan]

Outstanding gearing! Looking better with every posting of your progress!

[Hofabooz]

Hi Looking Great

Very high standard of craftmanship going into this cannot wait to see it unfold.

Regards

Mark

[pumptech]

Wow,what a build,awesome skills you have,looking forward to seeing this grade some dirt:D:D

[dirtpusher9]

I broke out on an F model many moons ago. This thing brings back memory's.

Wow, what an excellent job on this so far, can't wait for more. My hats off to you.

[fuchs301]

Thank you for your friendly comments. Now the grader is standing on his own 6 wheels:

http://farm8.staticflickr.com/7057/6982632345_896c534d22_b.jpg (http://www.flickr.com/photos/62091573@N08/6982632345/)


http://farm8.staticflickr.com/7068/6836506388_df49512eab_b.jpg (http://www.flickr.com/photos/62091573@N08/6836506388/)


http://farm8.staticflickr.com/7181/6982631647_789d1172d6_b.jpg (http://www.flickr.com/photos/62091573@N08/6982631647/)


http://farm8.staticflickr.com/7177/6982631937_7468c8d5c7_b.jpg (http://www.flickr.com/photos/62091573@N08/6982631937/)


http://farm8.staticflickr.com/7201/6836505164_eac0c25664_b.jpg (http://www.flickr.com/photos/62091573@N08/6836505164/)


here are the piece parts of the rear bumper:

http://farm8.staticflickr.com/7188/6836504866_8e4caec41e_b.jpg (http://www.flickr.com/photos/62091573@N08/6836504866/)


http://farm8.staticflickr.com/7209/6836506804_a265de1823_b.jpg (http://www.flickr.com/photos/62091573@N08/6836506804/)

[modelman]

This is a great project and you do very good machine work!! Keep the pictures coming.

[Smokin Joe]

Beautiful work! Looks like Swiss watch. More pics. please.

[Espeefan]

Wow. Everytime I look at the photos of the grader, even in a half assembled state, my mind keeps saying it's a full-sized 1:1 machine because everything looks so exact and beautifully made to scale, yet I know better, if only because the gear head motor for the drivetrain is visible. If it wasn't for that, I'd think for sure this was a 1:1 Cat 12F, going through a restoration, in someone's shop!

I really like the way the gear is keyed to the shaft, on the flat. I would have never come up with something like that. That is far superior to a set screw (grub screw) threaded through the gear hub. Much more robust with the key. I'm always learning something new.

The one thing I am a little surprised about is you decided to include some plastic gears in the drivetrain. Were you thinking of doing that for sacrificial purposes, to prevent any damage to other components? The weak link, being the 'fuse'?

Is this grader going to have cab, or will it be an open station model?

[D8R]

This is a very interesting build, very well built with some new technics (like said above about the key inside gear). By studing builds here in this forum you get a lot of new knowledge, atleast myselves.
Building a mechanical grader is a challange, looking forward to more pics showing the progress.
Dan

[fuchs301]

thank you for your comments,


The one thing I am a little surprised about is you decided to include some plastic gears in the drivetrain. Were you thinking of doing that for sacrificial purposes, to prevent any damage to other components? The weak link, being the 'fuse'?

Is this grader going to have cab, or will it be an open station model?

@Nathan,
when you look at the tables for strength of such plastic gears (POM), you will find, that the values are not much lower than for normal steel, like C45 (sometimes even higher). I use the plastic gears because they are running quieter.

I buy my gears at Mädler in germany:
http://www.maedler.de/Product/1643/1618/1034/1050/1053.aspx

I will make an open station model, because I like this kind.

[Fired up]

great work love to have the tools and skill that a lot off you have keep it up

[fuchs301]

I made a new gearbox for the grader: it is for the transverse movement of the entire blade.

The movable gear segment consists of two halves which are screwed together. This gear segment is driven by a worm gear. After assembly I have mounted the drive motor temporarily to test the function (so you can see my hand in the video).

http://farm8.staticflickr.com/7111/6881174172_f89f776157_b.jpg (http://www.flickr.com/photos/62091573@N08/6881174172/)

http://farm8.staticflickr.com/7137/6881174528_a864f02684_b.jpg (http://www.flickr.com/photos/62091573@N08/6881174528/)

http://farm8.staticflickr.com/7122/6881174828_e8912427b1_b.jpg (http://www.flickr.com/photos/62091573@N08/6881174828/)

http://farm8.staticflickr.com/7231/7027274529_6efd2fb24d_b.jpg (http://www.flickr.com/photos/62091573@N08/7027274529/)

http://farm8.staticflickr.com/7108/7027274919_63b2595aa0_b.jpg (http://www.flickr.com/photos/62091573@N08/7027274919/)


In this video you can see how it works:

http://youtu.be/1GGAO1b0fa0

[Madda]

Looking your build makes me want to have a CNC too.... Did you make your's yourself?

I really like it, very nice engineering, where do you work or what is your degree?

One thing, what scratches eye is that some of the rod ends are plastic but I hope you will change that in the future?

From where do you get these small screws?

[sparkycuda]

Wow! Unglaublich! (I hope the translation is correct for "unbelievable"). I absolutely enjoy gears and shafts - grew up with them before hydraulics became commonplace. You have been able to create the grader in miniature, not just a close model. Looking forward to more videos.

Ken

[fuchs301]

@Madda,

yes you are right: it is a self made CNC-machine.

I am working as an mechanical engineer and 30 year ago I made an education as a precision mechanic, but today its only a hobby.

I am also not happy with the rod ends in plastic, but yet I did not found such in metal which fits…

All the screws I buy in germany at:

http://www.knupfer-grossbahn.de/


@Ken, yes the translation is correct, thank you…

[Madda]

Could you put some pictures of that CNC? I'm really interested in CNC's and always want to see how somebody has built their's.

[gipicarto]

@Madda,

I am also not happy with the rod ends in plastic, but yet I did not found such in metal which fits…



... maybe this ???

http://www.rcrockcrawling.com/product_info.php?products_id=263


Compliments,

the best build never seen !!!!!

:eek::eek::eek::eek:

[Espeefan]

Amazing videos! It is an engineering masterpiece. To see this model function like the real thing is incredible. You are talented beyond human nature!

[Vanisle]

Wow, that's some amazing work. I admire anyone that can do such work with their own workshop machinery.

[fuchs301]

thank you again for your warm comments,

@gipicarto,
thank you for the link. I have looked in many german internet-shops and couldn't find a proper part. Perhaps I have to buy in US.

@Madda,
here some pics from my machine. It is not a big machine, because I wanted it more robust and only for the partsize I need. The workspace is X400 Y340 Z100. The milling-machine is a KRESS and it is very loud, therefore I am thinking about a HF-milling-machine.

http://farm8.staticflickr.com/7258/7032689119_b378201e27_b.jpg (http://www.flickr.com/photos/62091573@N08/7032689119/)

http://farm8.staticflickr.com/7094/7032689357_54621228be_b.jpg (http://www.flickr.com/photos/62091573@N08/7032689357/)

http://farm8.staticflickr.com/7072/7032687663_bd2d249cea_b.jpg (http://www.flickr.com/photos/62091573@N08/7032687663/)

[Madda]

Thanks for the pics, I wonder, how precise is that machine?

[fuchs301]

@Madda,
it is hard to give you an exact value for the precision, only one example: for the ball bearings I had to mill a hole with a diameter of 16mm. I used a two flute milling cutter with a diameter of 3mm and the result was a hole with dia 16mm +0,01 / -0,01 mm and it was perfect to press the ball bearing in it.

[Espeefan]

That is a neat looking mill! All home made too. Wow. So you have what looks like a large Dremel moto-tool for your head and spindle. I've seen similiar set-ups like this used for engraving. Never really thought about using something like this for a little heavier work. That's neat. I would have guessed you had a little larger mill for the parts you made.

[K-Man]

Such an impressive and simple design with the mechanical linkages. I only wish I would have a store where I could walk up and look the gears and the motors up before buying, (and can run to whenever I need a parts). Buying over the internet is a little confusing (and the waiting just kills me) because even though you can see the parts and their dimensions, it is never like looking at it and taking what you like and need.
Great job sir, keep it up. This one is worth built of the year, or at least of the month.

[fuchs301]

Hello,

the next step is done: I fixed the 2 servos to control the blade. In the control boxes there are 3 belt drives. I think, after watching the video you will understand how it works...

http://farm9.staticflickr.com/8011/7415829224_1f75ab6f6e_b.jpg (http://www.flickr.com/photos/62091573@N08/7415829224/)

http://farm6.staticflickr.com/5441/7415830276_77ee81a4dd_b.jpg (http://www.flickr.com/photos/62091573@N08/7415830276/)

http://farm9.staticflickr.com/8018/7415831132_3ef029c044_b.jpg (http://www.flickr.com/photos/62091573@N08/7415831132/)

http://farm9.staticflickr.com/8148/7415828552_a9832c3a64_b.jpg (http://www.flickr.com/photos/62091573@N08/7415828552/)


http://www.youtube.com/watch?v=RIQGDqelDJg&feature=plcp

[RCP57]

That is really cool, thanks for posting the pictures and the video!

Reg

[egronvold]

I really like the mechanical setup. Nice work!

[SmallHaul]

Very nice work.

That would be a blast to operate.

[Espeefan]

Wow. That's amazing! And it runs so smooth too. Are the servos that lift the blade standard 90 degree rotation servos? I'm curious how much down pressure they can produce, to keep the blade planted in the dirt. Your video is really something to watch! The mechanism that runs the blade function is so awesome.

[Hofabooz]

Hi

Thats so smoth looks amazing, very precise work, cannot wait to see progress being made on this project.

Thanks for posting.

Regards

Mark

[Tamiya Cowboy]

That is truly flawless working.. Thanks for posting the video..

[dabears]

Wow that video was awesome! Great work on it so far! Can't wait to see more

[fuchs301]

Thank you for your friendly comments…

Hi Nathan,

the servo has standard-size with a torque of 88Ncm. Perhaps you can see it on the upper pics that the servo has no rigidly connection to the blade. The whole blade-equipment has a weight of 700gramms and it is "hanging on the servos". Therefore there is no down force of the blade with the servos. The idea is to save to servos when there are obstacles on the way…

…if it works on my mind, I will see later...

[crusher]

Absolutely great precision work, you are a talented man. I really like your cnc build also, did you build it from a plan, if so I would love to know where I can get a copy.
Thanks
Terry

[fuchs301]

Hi Terry,

unfortunately there is no plan I can give to you. I build the cnc by myself and I created the single parts fitting to my machines. The main parts (like Recirculating ball bearing guide and spindle) I bought in the internet. I think, in the internet you can find a lot of informations, how to build a cnc-router by yourself.

[crusher]

Thank you for the reply.
Terry

[fuchs301]

now I added some paint:

http://farm9.staticflickr.com/8149/7663925420_a7f69c5a5e_b.jpg (http://www.flickr.com/photos/62091573@N08/7663925420/)

http://farm9.staticflickr.com/8026/7663927698_e7e5889e5d_b.jpg (http://www.flickr.com/photos/62091573@N08/7663927698/)

http://farm8.staticflickr.com/7250/7663926564_c8f009000c_b.jpg (http://www.flickr.com/photos/62091573@N08/7663926564/)

http://farm9.staticflickr.com/8008/7663924580_9806826980_b.jpg (http://www.flickr.com/photos/62091573@N08/7663924580/)

the next parts are engine cover and the control stand…

[dabears]

WOW that looks better then any dicast replica or even a real one! That is a top notch build for sure!

[YoungGunz]

Work of art right there. Very impressive.

J.D.

[rockNmayhem]

Wow such a beautiful piece of art there and looks extremely good with paint on it now.

Tyler

[rc_farmer]

Wow, that is an awsome job!

[B-Train Hauler]

Absolutly superb! A true masterpiece, Can't wait to see it finished!
Congrats and thanks to share :)

[Hofabooz]

Hi

That just looks real.
Great work.
Thanks for Sharing.

Regards

Mark

[D8R]

very nice model, looks real!
likes the way to hide all motors and servos
a 5 star model!
Dan

[Grainfarmer]

First class! ;)

[gipicarto]

http://img705.imageshack.us/img705/5117/yoghia.jpg

[tc1cat]

Outstanding build:D:D Can't wait to see it finished!

[9W Monighan]

I just had to page through all of you posts today at lunch and remind myself what a great project you have accomplished. Keep up the excellent work!

[RCP57]

This is definately one of my favorite builds. I really like the fact that it's all mechanical and still looks very scale. You can tell that a lot of thought went into making things work without using bulky parts that would take away from the final look of it.

Thanks for posting this build!

Reg

[Diesel Demond]

FFFFFFing amazeing! Just setting up your machine is a master piece and to build a show stopper piece of construction equipment is just outstanding!

[fuchs301]

Hi,

just a small update: the control-stand is nearly ready and I added a little weathering (I don't like really new machines :) ):


http://farm9.staticflickr.com/8034/8032880238_0f06753184.jpg (http://www.flickr.com/photos/62091573@N08/8032880238/)


http://farm9.staticflickr.com/8182/8032879880_2e8929eb9d.jpg (http://www.flickr.com/photos/62091573@N08/8032879880/)


http://farm9.staticflickr.com/8037/8032881095_32e2499f08.jpg (http://www.flickr.com/photos/62091573@N08/8032881095/)


http://farm9.staticflickr.com/8312/8032879120_134077a16e.jpg (http://www.flickr.com/photos/62091573@N08/8032879120/)

[FlyingBeagle]

You are truley an artist. This machine is amazing. So often you see people attempt weathering, but it is easy to tell it is fake. Yours looks perfect. I would love to see some photos of this model outside working. With the proper camera perspective you would not be able to tell this is a scale model. As always, videos are always appreciated.

[grumpygrady]

nice job weathering ,but were is the oil from that one leaking joint that just seems to leak once in a blue moon and the grease spots around each grease fitting lol

never mind just kidding lololol

this is one of the best weathering jobs i have seen
grader looks worked but not abused

[ihbuilder]

Holy crap !! that 1st pic I thought it was the real 1 :eek: great job :cool::cool::cool:

[Espeefan]

Wow, this has become a truly beautiful model! It looks perfect. Some good old classic Caterpillar iron. I really enjoyed watching this one take shape. Not much more to go now, is there?

[Stefan]

(I don't like really new machines )


I do :D Still, I think your model is an absolutely amazing piece of work, one of the very best builds I´ve ever seen.

Stefan

[Lil Giants]

That almost seems criminal to add weathering to a rc construction model. :confused: :p

A skillfully unique creative ingenuous fine working model you have created Chris.. now let's see it work! :D

[Pedrocrisostomo]

I think you should start your own business making models for people like us to buy. This could be a competitor to the wedico and permacon or Scaleart. Keep up the good work

[fuchs301]

Hi,

thank you for your friendly comments…

@grumpygrady,
… good ideas, I will try to add it…:):)

@Nathan,
… now I am working at the engine hood and the electrical equipment…

@Lil Giants,
… the functions you have seen already in the youtube-vids, and after I have finished the model, I will try to make some vids outside…

@Pedrocrisostoma,
… for me it is only a hobby and so I have no interest of making a business of it…

Chris

[jtroyer06]

Chris

Wow this model looks great and great work on the weathering! TOP-NOTCH!

Jordan

[catmack]

Chris,

This an outstanding machine. Great job! Colin

[fuchs301]

meanwhile the grader is ready and in the german RC-model-magazine there is a report and a video on youtube:

http://youtu.be/pYKFc0RlGNo

Chris

[Seilbagger]

Hello Chris,

when i saw the new Rad&Kette first time with the cover of the grader, i thought it will be a real and there was a mistake by printing. This is so amazing.

[Rvjimd]

Happy to see this bump back to the top. Wow, very nice!

Jim

[egronvold]

An amazing build! The paintjob is spot on for the grader.

[9W Monighan]

Hats off to you on your completion! I like the weathering. Looks very nice where there is some rust were the factory missed covering the metal with a even layer of paint like the 1:1.
As a owner of several antique Caterpillar tractors and road graders, This really gets my attention.

I don't know if you know this or not, but the Cat #12 grader just had it's 75th birthday. And is the longest running non tractor in the Caterpillar lineup.

[JAMMER]

Chris you have done a spectacular job on the grader so good it looks real. Ed

[RCLogger]

WOW The bar has been raise to a new level....

greg

[doodlebug]

Congratulation's on the magazine spread!
Cheer's, Neil.

[just getting started]

man I just love the old cat emblem can't stand the new one very awesome build:jaw:

[BigCATRod]

This is an amazing model. I am amazed by what I have seen since joining this forum. I used to run an old 12F. This operates just like the real thing. If those controls were worn and wouldn't knuckle in properly they would break your arm if you held on. Great model!

[ederson]

moito real gostei muito

[ederson]

:jaw: legal