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Forum: Construction Equipment 06-20-2013, 02:23 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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
Forum: Construction Equipment 10-01-2012, 04:15 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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…
Forum: Construction Equipment 09-28-2012, 10:56 AM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 07-28-2012, 04:18 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

now I added some paint:

http://farm9.staticflickr.com/8149/7663925420_a7f69c5a5e_b.jpg (http://www.flickr.com/photos/62091573@N08/7663925420/)
...
Forum: Construction Equipment 07-09-2012, 03:00 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 07-05-2012, 03:49 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 06-22-2012, 02:03 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
...
Forum: Construction Equipment 04-01-2012, 11:13 AM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

@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...
Forum: Construction Equipment 03-31-2012, 11:09 AM
Replies: 394
Views: 382,016
Posted By fuchs301
Re: CAT 14M Motor Grader

wow, what a great work.

-Do you want to add a rear ripper? I am not sure about the right english word, or is it a scarifier?

-how did you paint the grader, with a sprayer?
Forum: Construction Equipment 03-31-2012, 10:44 AM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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,...
Forum: Construction Equipment 03-29-2012, 10:58 AM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

@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...
Forum: Construction Equipment 03-29-2012, 09:49 AM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 03-15-2012, 03:36 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

thank you for your comments,



@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...
Forum: Construction Equipment 03-14-2012, 03:01 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 03-07-2012, 10:25 AM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: General Discussion 03-06-2012, 11:25 AM
Replies: 37
Views: 7,691
Posted By fuchs301
Re: WHAT"S WRONG WITH THE BOARD?

its the same from germany: very very slow and some dropouts...
Forum: Construction Equipment 03-06-2012, 10:41 AM
Replies: 394
Views: 382,016
Posted By fuchs301
Re: CAT 14M Motor Grader

it is a very amazing model and I really admire the details.
- How did you make or get the decals / sticker ?
- what kid of CNC-machines you have available ?
Forum: Construction Equipment 03-04-2012, 03:31 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

Hi Nathan, that's why I love the mechanical solutions of such oldtimer...
Forum: Construction Equipment 03-04-2012, 01:33 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

@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:
...
Forum: Construction Equipment 03-04-2012, 12:16 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 03-03-2012, 03:47 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 03-02-2012, 01:59 PM
Replies: 100
Views: 52,343
Posted By fuchs301
Re: 1/14 Grader Caterpillar 12F

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...
Forum: Construction Equipment 03-01-2012, 03:30 PM
Replies: 100
Views: 52,343
Posted By fuchs301
1/14 Grader Caterpillar 12F

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...
Forum: Welcome New Members 02-29-2012, 12:44 PM
Replies: 3
Views: 1,943
Posted By fuchs301
Hello from germany

Hello,

my name is Christian, I am from the north of germany and I am new in this forum.
In the past I built some truckmodels in scale 1:8. The last one was a german "Unimog 406".
...
Showing results 1 to 24 of 24

 
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