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Cat D7R build
ti
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Posted: Monday, November 02, 2020 - 07:45 PM UTC
Totally amazing results. you always keep amazing me with your broad knowledge and amazing scratch building skills. you are definitely the MAN!!!!!!!!!
Stickframe
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Posted: Thursday, September 24, 2020 - 09:52 AM UTC
Hi guys,

Well, I'm glad some of you were willing to indulge my strange entry with this one! This was a funny build. I almost gave up a few times, as I was getting nervous this would turn out like a big toy!

David, your house must be a lot bigger than mine! A tractor and lowboy would be lots of fun - but can you imagine how big that would be?? I already feel like I'm running a mini car incubator over here! lol -

D - I'm so glad you spotted the sag!! really! lol - I fooled around with the tracks for quite a while to find the right fit - including modifying a link on each to fit. The problem, take out one track way too loose - leave as is, tight as a guitar string...crap! So, I went about making what was more or less, a custom, half track link! what a joy! The only good, if not surprising news was that the exact same fi worked on each side! And, yes, next will be OOB. Back to F1 trying a full 1/20 scale Studio27 car. Looks nice! in fact, better than I thought...and I'm looking forward to tackling the pile of resin, metal, etch and so on -

Michael, I agree - the logos would be perfect. I found some non-scale decals from a farm toy shop that look nice - alas, laziness won the day - this needed to get out of the shop!

OK gents, stay well -

Cheers
Nick
Cosimodo
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Posted: Thursday, September 17, 2020 - 12:56 PM UTC
The people at the park, even socially distant, have had a treat today with both the CAT and the Peterbilt.
This build is also amazing and I think I am out of superlatives so a thought instead. I think it would look go with some logos, did the base kit have some? I know that the DR7 might be hard to come by but a CAT or two would work.

cheers
Michael
AussieReg
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Posted: Thursday, September 17, 2020 - 12:45 PM UTC
Wow Nick, you're on a roll mate! This looks great, another nicely weathered but well maintained work unit. The rubbed paint and rust patches came up beautifully, and the sag on the tracks looks spot on.

You must be burnt out with two big scratch-build projects, how about an OOB build now

Cheers, D
Dixon66
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Posted: Thursday, September 17, 2020 - 10:23 AM UTC
Looks great Nick!

Now you need a lowboy trailer and a semi to pull it.
Stickframe
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Posted: Thursday, September 17, 2020 - 10:14 AM UTC
Hi guys,

calling this one done!

David, looking forward to seeing your truck! I find the dirty bare metal finish is a bit tricky, but like the results!

OK, here we go:





Finally a non smoky or foggy day here! so, out for some photos!





Not so many pictures for this build - it's big and is what it is:





So, nothing like my recent string of F1 cars, but an interesting build none the less.

I'm not sure about what's next, likely another F1! lol

Cheers and stay well!

Nick
Dixon66
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Posted: Monday, September 14, 2020 - 12:02 AM UTC
Looking great Nick.

I'm hoping to try something like what you did on the dozer blade when I do the inside of the dump body on the Mack.
Stickframe
#362
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Posted: Sunday, September 13, 2020 - 02:35 PM UTC
Hi gents,

Thanks for having a look - the sky here is no longer orange, but the weather report calls the air "very unhealthy". D, we've seen the stories on the news of the big fires there. This phenomenon was not typical here, but since about 2016 it seems to be another "magical" part of the new normal and not a good one.

On one hand, between covid and bad air, no reason at all to go out - which is healthy for everyone - but, it does get old...work from home, cook at home, visit family, friends via internet and so on, from home. Walking out for a coffee has become a rogue activity!

An alternative/diversion to this mess is of course, model building. That said, this has been going on since mid March (thankfully not the fires - that's "only" been happening for the last month!) so even model building needs to be regulated as to not burn out on it too!

OK - enough whining, and a few updates. I kept the dozer strung up in the improvised rack, and went about painting it.

CAT yellow is quite distinctive - a really interesting shade that's not straight yellow, but not too deep/orang-ish either.

I mixed up my own version using vallejo Chrome Yellow, US Interior Yellow, a few shots of Ferrari red, and vallejo thinner. I think the results are pretty good.

The greater peril came with the airbrush. I used old paint that has been sitting here for quite a while - the US Yellow Interior yellow has been here for a few years (really smart keeping it around eh???) and was pretty chunky. Blend and reblend, there was at least one little air brush clogging nugget with each filling of the airbrush, and a slow painting session.

So, spray a while, fool around with air brush, make it shoot, fool around more, empty the cup, clean airbrush, and do over and over - Per above, stuck at home anyway, what else could I do? The blade and dozer took 8 or 9 cups of paint.

Anyway, I like the results:









Happily, while this took a while to get finished, when all was said and done, there was no need to add another coat and no streaks or drips etc. You can also see, the driver area dry fit - and about done.

Next up the blade - I want this to look used but still relatively new. Interestingly, even with lots and lots more use, these units seem to stay relatively clean - blades, tracks and rails get scraped up, not the rest, and there's rarely any big dirt buildup. Thinking about building the fenders on the Peterbilt, I reminded myself to look at reference pictures for this, and to not rely on what I thought it "should" look like.

The blade started with yellow, then brush on layer of anthracite grey, then gunmetal, then my blend for rust:









This and the rest of the dozer will get a wash of Lifecolor Dust 1 before it's called done. The tracks received the same. So far so good.

I'm still working on the dozer.

Also - Tamiya rattle can black on the cabin and grill:





WOw! this needs the dust wash!! It is very strong, dark black!

The windows are cut out, and I sprayed a layer of grey on the edges to represent trim, just haven't installed them yet.

OK, stay well gents -

Cheers

Nick

AussieReg
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Posted: Saturday, September 12, 2020 - 11:08 PM UTC
Loving the progress on this build Nick, it's looking amazing! Great way to support such an unwieldy beast for painting as well, improvisation and use of resources!


Quoted Text

Though photos remind me of Australia when they have the big fires there. Damian would know for sure but when I lived in Sydney they had some amazing skys during the bushfire season.
cheers
Michael



Yeah, we had that for weeks on end earlier this year, didn't see the sun for days on end when the wind died down. Very eerie and a lot of health issues for those with lung problems or other breathing difficulties like asthma.

Stay safe there mate.

Cheers, D
KoSprueOne
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Posted: Saturday, September 12, 2020 - 05:05 AM UTC
Yeah, the California skies are looking eerily weird this week.

However, the progress on the CAT looks good. I like that part of the build when you get the first base coat of primer to see if it's all coming together.




Cosimodo
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Posted: Friday, September 11, 2020 - 04:19 PM UTC
Nick, hope you enjoyed the contents - I am not sure my photos would look that good after a few bottles of Californian wine - and nice improvisation on the paint stand. Though photos remind me of Australia when they have the big fires there. Damian would know for sure but when I lived in Sydney they had some amazing skys during the bushfire season.

cheers
Michael
Stickframe
#362
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Posted: Friday, September 11, 2020 - 12:16 PM UTC
Hello gents,

D and Michael, well, funny story about the "on-line" ripper....it finally arrived - longer story about how Paypal (didn't) handle it (I can't be too annoyed about this, trying to keep in perspective) but for now - the parts. Michael, you were right - my scratch work is better, as the quality is just ok, even a bit sloppy, and some of the resin parts are wet with some sort of mould release agent! Almost ready to send these long awaited parts to the junk box!

Hi Charles, thanks, I appreciate it. Knowing, your work, I hope some bits or ideas from this make it into one of your builds some day!

OK, on to the update - before talking models, check these out:



This is looking south on Columbus Avenue in San Francisco - at 10 AM!!! taken by a friend on Wednesday morning - how's that for a weird image?? and below:



Above, from my brother's house, about 8:30 AM, about an hour north of San Francisco! I live about 10 miles due east of SF and experienced the same - it stayed like this all day. In brief, there was the typical fog layer, staying low, and above it, a layer of dense smoke above, very effectively blocking most sunlight all day. This could be a dust storm in the ME, smoke in the Philippines, or dense smog in China - quite an uncommon sight for here.

Wow - between being stuck at home because of COVID, and this, very odd!! The air quality today is very poor, even though the air either no longer smells like smoke, or, I can no longer smell it!! We've had poor quality air for the last 28 days, which is not typical. In addition to smoke smell and effects, the humidity has stayed high, though now, it dropped to 60%, so I decided to do some painting.

OK, enough about local climate, and on to model building.

A guy had to take a minute away from the CAT, and think about finishing the Peterbilt - and today, back to the CAT. First up, it's big and needs paint, so, take a look:





As you can see, the dozer is BIG! So, a guy cut up a wine box, and strung it up on wires for painting, above pre-prime, and below, with primer:



No idea why the photo's look fuzzy - maybe the weird ambient light - as noted above, or a smudge on the lens? who knows - anyway, progress.

For paint, the base coat will be a Tamiya, "ornagy" yellow, which looks a lot like CASE yellow, and not like CAT yellow, but it's what I've got. Next will dust it with Vallejo chrome yellow via airbrush and hope to knock it back to what it's supposed to look like.

Ok, that's it - take care, and stay well -

Cheers
Nick

ti
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Dalarnas, Sweden
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Posted: Sunday, August 30, 2020 - 09:18 PM UTC
You always surprise me with your scratch building abilities. You are a great inspiration.
Cosimodo
#335
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Posted: Thursday, August 20, 2020 - 12:40 PM UTC
I wonder, and doubt, that they would have been as good the ones you have built. Great detail in the blades and hydraulics!

cheers
Michael
AussieReg
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Posted: Thursday, August 20, 2020 - 11:02 AM UTC

Quoted Text

The next email (post opening complaint with Paypal) I received from the guy encouraged me not to worry, it's no big deal and, it's only xyz$.



It might be only xyz$$, but it's better in the hands of another seller if that's his attitude!

The outstanding construction continues here Nick, just amazing work with basically stock sheet and shapes. I love it!

Cheers, D
Stickframe
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Posted: Thursday, August 20, 2020 - 09:11 AM UTC
Hello gents,

thanks for the positive words - certainly an interesting, and big build!

Michael, funny you'd mention the ripper. I found a guy online who sells a set of printed rippers for a normal D8. I figured I could buy them and adapt to this. Long story short, I ordered the parts on June 3 - by mid July was told they'd be sent out the week of July 20 - and here we are - no ripper from him. I called Paypal and cancelled the payment. The next email (post opening complaint with Paypal) I received from the guy encouraged me not to worry, it's no big deal and, it's only xyz$. If that's his attitude, he doesn't deserve my money. He's right, it's not about the money, it's about following up on his word.

So, now having spent only a few bucks for evergreen, some aluminum tube, solder wire, and a couple of days on and off, here we have it:







That could have easily been built to be movable - getting the geometry more or less right, allowed it to go together pretty smoothly. You can see I kept a few of the original kit parts. The mounting arms were cut down about 1/2" and two of the hydraulic cylinders cut about 1/4". Below, you can see the model and the working diagram. I chose to model this in the lifted position - just for convenience when it's done:



For a scale reference, next to the Ford PU. The Cat is just big, in all directions, but the scale looks about right:



I need to cut out some windows and then will be ready for paint. Unhappily, we are in what seems to be another "new normal" here, hot weather and wildfires, so the air outside is dense with ash/smoke, so I'll hold off painting until this blows through.

In the meantime, will get back on the Peterbilt.

Stay well and happy model building gents -

Cheers
Nick
Cosimodo
#335
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Posted: Sunday, July 12, 2020 - 09:08 PM UTC
The hydraulics look amazing. They really stand out for me as a great piece of scratch building. I'd like to see you build the rippers off the back.

cheers
Michael
AussieReg
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Posted: Sunday, July 12, 2020 - 10:44 AM UTC
Looking great Nick, outstanding scratch building as always!

Cheers, D
jimb
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Posted: Sunday, July 12, 2020 - 08:57 AM UTC
Fantastic work on your dozer, Nick. It's really coming along.

Jim
Stickframe
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Posted: Sunday, July 12, 2020 - 07:14 AM UTC
Hi guys,

Despite the quarantine in place, I've had some things to do, so work on the D7 has been slow, but not stopped.

Hi Darrell, well, I started with straight OOB too, and gradually began adding this and that, and eventually tried to go beyond. It's always hit or miss, and requires some head scratching along the way

As for updates, I've got a minute, as the gallery seems to be busy, which is frustrating, but I understand the Kitmaker staff is aware of, and is trying to address it.

So, while I wait, some notes on progress. You'll see the front end and blade is well underway. I built some hydraulics. This wasn't specifically hard to do, but getting the alignments on mark was a challenge - you'll see it's just temporarily held together and I need to add more hydraulic lines and some bolts etc -

Next will be the rear end. I'm considering adding some rippers, or a winch - I haven't decided just yet. I ordered some parts for the ripper, that would be 3d printed - but this has been really slow - I might just build something myself -











OK- a speed post - the gallery was up!

So, a guy has some decisions to make, and still a while to go before buttoning this one up -

Stay well and keep building

Cheers
Nick
2002hummer
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Posted: Wednesday, June 24, 2020 - 05:12 PM UTC
Great build Nick. just found your build but will follow it. I wish I could build have as good as you. I am still in the OOB stage with a few mods.
Stickframe
#362
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Posted: Wednesday, June 24, 2020 - 02:45 PM UTC
Hi Michael - thanks. The D9 dio was a big project, opening up all sorts of challenges, including taking a shot at weathering that Cat!

I've been around a lot of equipment and have spent time in that part of the world, and paid attention to what real "weathering" looks like on heavy equipment - on one hand, making it engulfed in dust is essential, and obvious, broad scrapes (both surface and to the metal) in some areas, and really very clean in others.

And as it's depicting something in use, more raw metal than rust where the scrapes can be seen. I really enjoyed building that. I think this will get some weather too - no reason for a guy to have a "showroom Cat"! that iron is meant to be used - lol

Hi Richard, speaking of the Meng kit, I found this in the instructions:



It's hard to tell if the seat is off-axis or not in this image? But the foot rests on the deck, are asymmetrical! maybe the seat is too? oh well....maybe next time!

Cheers
Nick
Cosimodo
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Posted: Wednesday, June 24, 2020 - 12:22 PM UTC
Amazing watch this CAT develop. Great explanations of how you approach the various requirements and seeing the outcomes realized in styrene is pretty cool.
The military version you done is looks incredible - photo realistic I would say - as is its setting.

cheers
Michael
Stickframe
#362
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Posted: Tuesday, June 23, 2020 - 05:52 PM UTC
Hi David, yes, this project is eating up lots of evergreen - it's a
great material source. It's fairly remarkable how much you can squeeze out of basic raw material with enough head scratching lol

Hi Richard, thanks for checking it out. You raise a really interesting question about the driver's seat - I don't know if it's set off axis, but it would sure make sense if it were. I've been using several photos for reference, like this:



After reading your comment, I went back and looked at my resource images and can't tell if it's off axis or not? I tried to "fake in" something that looks close, but, if it were off axis, that would have been a nice detail to try!

Based on this and other photos, I can tell the seat is adjustable up and down, maybe even an air ride of some type? I don't know - if you look back at the images you can see I added some half round material to look like the rubber base and some small channel for the adjusting tracks - hmmm. I guess it's too late now to carve the seat out to set it off-axis. All things considered, it was a relatively tight fit - and you can see, I salvaged the kit seat -

Shoot! you know what? I've built the Meng D9R (a great kit btw) - I could look on line for the instructions and see what they did? I can't see into the cabin on my build - it's weathered and has an RPG cage - thinking about that, here it is built - I used it as part of a Ca 2004 US Army version used for select battles in Sadr City:









Something worth noting on the D9 is the more accurate portrayal of the grousers - they "look" right - I need to figure out how to fix the grousers on this kit - paint and weathering might help, but I'm not convinced that will do the trick.

Take care -

Nick
rdt1953
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Posted: Monday, June 22, 2020 - 07:37 PM UTC
Hi Nick -
Iíve been watching this with great interest. Very nice work indeed .
I donít know about the D7 but the in the D6 I got to play with the operatorís seat is not square across the machine but is at an angle to reduce neck fatigue as bulldozer operators are looking to the rear nearly as often as looking forward .
Keep at it ! - Richard