Jump to content

Pawel

Bulldog
  • Posts

    377
  • Joined

  • Last visited

Posts posted by Pawel

  1. Hey Vlad!

    Thanks a lot for your comment! While metalics seem to cover allright, I noticed they are a little tricky - the colour gets a little deeper with each coat, so then it's easy to get in trouble with mismatched shades on parts that were painted separatey but then join together - like the cab, the hood and in my case - the roof that was painted separately. For my model, I chose the colours because I liked them. I heard about the trick with white - I have yet to try it out - sounds interesting.

    As for the winter - it's harsh but not unusual in western Poland - the temperature drops below -15 degrees at night and about -10 at daytime. I was forced to buy a new battery for my car though, and started using diesel fuel additive to keep it running smooth. In eastern Poland they said at times it dropped below -30 degrees - now that starts to get bad. Lots of people already froze to death this winter.

    Olivetroad - you know we're talking degrees Celsius here, right? -30 deg C are -22 Fahrenheit, -20 deg C are -4 Fahrenheit and -10 deg C are 14 Fahrenheit. Still very cold, can't wait for the spring.

    Thanks for reading, have a nice day

    Paweł

  2. Olivetroad, umodelnut, DodgeMan - thanks a lot for your kind words. Not much left for me to post in this one, the stripes now need some clear coat and very careful sanding between the coats. Once that's done, I'll post some more photos. The rest of my build can be seen in another thread here, and I intend to continue to update that one. Glad you like it - thanks again for your comments and have a nice day

    Pawel

  3. Mark - thanks a lot. I have yet to get this Pactra tape to try it out. I know Tamiya tape though - a little hard to get in the shops around here, but a very good material.

    I write, to show you, what I managed to do about the cab and the hood to match the sleeper. I don't have the photo of the stage, when the cab and hood were white and masked, but since I applied the base colour, my work wnet like this:

    cab27.jpg

    Masking "reversed":

    cab28.jpg

    Two layers of gloss black and one layer of prismatic paint later:

    cab29.jpg

    And after the masking was completely removed - a few problems are there, but working on the sleeper I found out most of them can be taken care of using the tip of a surgical blade:

    cab30.jpg

    cab31.jpg

    cab32.jpg

    cab33.jpg

    cab34.jpg

    Thanks for reading, have a nice day

    Paweł

  4. Rob - thanks a lot for your comment, glad you like my colours. Yeah, the tape is crepe paper, I took it because it came cut to 1mm width, that seemed to save a lot of time cutting. I have yet to find a good vinyl masking tape, it would be good to compare them.

    slpwlkr - thanks!

    Mark - Thanks a lot. That's yes and no, the red paint came in a can, the black base and the prismatic paint were applied by airbrush. You're right, airbrush gives much lighter coats, just for bigger surfaces I'd need a larger nozzle for it, otherwise I wouldn't get a nice shiny surface on bigger objects. I haven't seen "Pactra" tape yet, I don't know if you can buy it in Europe. I'll take a look

    And now on to the cab and the hood! Let's see if I can improve my process. Thanks again for your help and your comments, have a nice day

    Paweł

  5. Hello again!

    Here's what I managed to do. First, I painted the sleeperbox white, then I laid out the stripes with thin tape:

    sleeper17.jpg

    After that, I sprayed some white again - it was an idea I picked up watching some german house improvement show. The idea is: should paint sip under the tape, let it be the same colour. After it dried, I masked the area where the stripe would be and started applying the base colour - unfortunately it needed some three coats to really cover - bad for the "step" where the colours meet:

    sleeper18.jpg

    After the base colour dried, I had to "reverse" the mask - uncover the stripes and mask the base colour:

    sleeper19.jpg

    Then I applied black primer:

    sleeper20.jpg

    And after it was dry, I went to town - green to brown to gold prismatic paint:

    sleeper21.jpg

    Then the thrilling moment came, to remove the masking. Here's what was underneath:

    sleeper22.jpg

    sleeper23.jpg

    sleeper24.jpg

    As can be seen, some red paint still managed to seep under the tape, but I think I can work on it. There is also a distinctive "step" where the colours meet, but I hope I can improve it some with clear coat. How do you like my colour choice? Thanks a lot for your help, and thanks for reading, have a nice day

    Paweł

  6. Yeah, that's just unfair - you haul two full fuel tanks with you and still run out of fuel, ain't that bad? A friend once told me, he had seen a truck that ran out of fuel in Germany - he was standing on the crossing, at the street lights. The irony of it was this crossing is located exactly between a small gas station (like 50 meters away) and a large truck stop with it's own large gas station (not more than 200 meters away). Anyhow, I hope you won't get more trouble with this fuel system anymore, good luck with your trucks and have a nice day

    Paweł

  7. Hello!

    I see there's a real problem to solve. While I can't help you with specific details, I thought I could offer some theory. For one - this effect where the bounce dissapears above 22 mph and returns at 44 mph. The physics describe similar effects as resonance. Resonance appears, where an object receives a vibration at a specific frequency - or it's multiple (called a harmonic). Then it starts vibrating very violently, sometimes to the point, where it gets destroyed. In school they often cite the unit of soldiers, marching on a bridge. If they "hit" the specific frequency of the bridge with their marching, they can even collapse the bridge (that even happened a few times before the army got trucks for their soldiers). So in your case the wheels turning are always slightly out of ballance - no perfecion in this world. Changing speed changes the frequency of vibration, that is transmitted through the suspension to the frame and so on. Once this frequency meets the specific or resonance frequency of something (yeah - tha's the big question - what is vibrating exactly?) it starts vibrating like shown on the video. How do you think - what could be that something? Is it the frame? Or is it the front suspension? Maybe it's the cab on its mount? Did you try your truck heavily loaded? Is it stil bouncing under load? How to stop that? Normally the theory says you should introduce more damping in the setup. If the frame was vibrating, you should make it stiffer - tighten the bolts, install another crossmember? If it's the front suspension, maybe a damper could help? Anyhow, I hope you can save the day, wish you good luck with your truck, and have a nice day

    Paweł

  8. Hey Vladislav - greetings from Poland! I thought you only had Internationals in Russia, as far as the American trucks go. Congratulations on your Mack, any chances you'll be going through Poland? I'd sure like to take a look. Good luck with your machine, have a nice day

    Paweł

  9. Hello!

    This is a very well known truck here, where I live. It was made by the KrAZ works. The solo version of this machine is called KrAZ-255 and is a ten ton truck, but there are many versions with different designations. Ten years ago they were still very popular as construction site dump trucks. In Russia they are also used extensively by the military, as fire trucks and by state-owned companies. There are also all wheel drive variants:

    800px-KrAZ_255.JPG

    Hope you like it, have a nice day

    Paweł

  10. In western Europe it's generally agreed upon to use white for all horizontal (on the road surface) markings. One exception is temporary markings - like on the construction sites. Then yellow paint is used. I believe it's removable - or more easily removable than the white paint, because the regulation say, as long as there are the yellow markings, they override what the white markings say. And somehow in Europe there's no need to separate traffic going in different directions - somehow people always know who's going where. Ain't the diversity of the world really cool? Have a nice day

    Paweł

×
×
  • Create New...