lego technic tatra 8x8

[nielsvdv]

hi, i am new to this forum and i wanted to share my latest creation.

its a lego tatra t813 kolos 8x8.

driving motors: 2xl's

gearing: aprox 1/14

weight: 2600 grams

steering: on 4 wheels, powered by 1 m motor

building time 3 days

the model fearures working halfaxles, they have a very long travel thanks to the spring setup.

the front axles are helped with an extra spring to carry the weight. overal performances of the model are very good, it can climb over 45 degrees of angle, also it can climb up a 12 cm platform.

link: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=446312

if someone would like to, i willmake a video of it.

regards Niels

[Sariel]

May I suggest resizing the photos down? We don't really need them in 3072 x 2048 resolution, especially that most of them is so blurry that you can't really see much.

[nielsvdv]

May I suggest resizing the photos down? We don't really need them in 3072 x 2048 resolution, especially that most of them is so blurry that you can't really see much.

ow sorry, how do i do that? and i will ma enew pics who are les blurry. does the cam need a setup for so close photo's or something, i went through al programms :s

btw sariel, i am a huge fan of youre work :)

[rjk1977]

Looking good , i like big machines.

Did you used the wheels of the 8297 offroader???

i'm planning to use those on a 10x8x10 drive train.

Edited September 23, 2010 by rjk1977

[nielsvdv]

Looking good , i like big machines.

Did you used the wheels of the 8297 offroader???

i'm planning to use those on a 10x8x10 drive train.

these are indeed 8 8297 wheels :)

youre plan sounds nice :) but pricey..luckely i already had 4 of them.

the hardest part from this truck kwas to keep the flex in the frame low, while keeping the weight down, i succeeded, 2.6 kilo with batteries isn't al that bad.

the only minor problem is that when i realy stres one link from the steering, it could snap of. but i really need to stress em hard, just by driving with this in your mind it can conqueer al lot! :)

i read on topics from other trucks that the gearing is mostly 1/5 of 1/8, but with my 1/14 the truck drives perfect and can handle al situations, i think that when i lower the gearing, the truck wouldn't drive that smooth anymore over obstacles.

i made this truck to compete in the first belug trucktrial competition. i am from belgium and the trucktrial world is'nt that big. the track consists of multiple obstacles made in lego, so i don't want it to drive too fast.

regards niels

Edited September 24, 2010 by nielsvdv

[Sariel]

ow sorry, how do i do that? and i will ma enew pics who are les blurry. does the cam need a setup for so close photo's or something, i went through al programms :s

I'm sure your camera's options include smaller picture size. The one you used is good for printing full size billboards, not for online browsing. For less blurry pics, I recommend making sure there is plenty of light and simply putting camera on top of something stable (a book or a box will do).

with my 1/14 the truck drives perfect and can handle al situations

And it's slow like hell, isn't it?

Edited September 24, 2010 by Sariel

[rjk1977]

these are indeed 8 8297 wheels :)

youre plan sounds nice :) but pricey..luckely i already had 4 of them.

the hardest part from this truck kwas to keep the flex in the frame low, while keeping the weight down, i succeeded, 2.6 kilo with batteries isn't al that bad.

the only minor problem is that when i realy stres one link from the steering, it could snap of. but i really need to stress em hard, just by driving with this in your mind it can conqueer al lot! :)

i read on topics from other trucks that the gearing is mostly 1/5 of 1/8, but with my 1/14 the truck drives perfect and can handle al situations, i think that when i lower the gearing, the truck wouldn't drive that smooth anymore over obstacles.

i made this truck to compete in the first belug trucktrial competition. i am from belgium and the trucktrial world is'nt that big. the track consists of multiple obstacles made in lego, so i don't want it to drive too fast.

regards niels

Yes i looked in a shop for just the wheels , but around 8.50 euro its expencive when you need 10 of those, luckely i have 4 allready also.

Well first i'm going to collect all the parts i think i need.

Thanx for the info

RJK

[dolittle]

Yes i looked in a shop for just the wheels , but around 8.50 euro its expencive when you need 10 of those, luckely i have 4 allready also.

Well first i'm going to collect all the parts i think i need.

Thanx for the info

RJK

Hi,

Brinklink has them at 3.75$ + 2.5$ a pop :)

A bit lower than 8.5 euro :)

[nielsvdv]

I'm sure your camera's options include smaller picture size. The one you used is good for printing full size billboards, not for online browsing. For less blurry pics, I recommend making sure there is plenty of light and simply putting camera on top of something stable (a book or a box will do).

And it's slow like hell, isn't it?

i will try to make better pictures.

it is pretty slow, but not too slow. i kinda need this speed. the trial route is made to take it slow. but now i am working on a new gearbox witch will give me 2 gears, a 1/8.33 and a 1/13.8, so i always got the speed i need. the 1/8.33 looks fine to me as a high gear.

niels