KirTech LAB

Jim, thanks for fantastic review! It was very interesting to read and the photos are excellent as always!

Exellent work! PS: first time I seen it without music... +1 for RA3 soundtrack :)

One more masterpiece! Great fire truck!!!

Beautiful car!!! PS: Working V10 would be cool!!!! I believe it's possible!

Thanks!

Thanks :) The first version was really epic fail that forced me to reconsider full concept of this model. But the second version was successful without fatal errors and total rebuilding. I think it's result of long designing rather than grueling trial and error. BTW I have never seen this machine in real life. I've seen it in one of Discovery channel programme long time ago.

Great engineering! I wish you luck with repair!!! Don't stop :)

Maybe private poll will be cool? Just to save intrigue :)

It's not too hard so in this model I use simple single levers. The main trouble was to remember which direction each lever gives so I've created a crib :)

Thanks! Yes I distributed functions and PF channels very carefully, what operations should be at the first mode and what at the second one. Small tracks work good on the table but in outdoor they work really bad because of small branches and so on. I'll post a few WIP photos without body a bit later! Thanks! Take a look at post number ten at the first page of this topic. My leveling system differs from the original one but I think cab height is near the truth.

Thanks for comments and appreciation! Now I'm a bit tired of large projects and I want to create a few middle-size models; but at first I want to create something for TC7 contest because it's very interesting competition. Yes - tons of paper, liters of coffee.. and kilometers of wires :))) Thanks!!!

Thanks a lot for kind words! I'm glad you like it! I have many thoughts about instructions :) To say the truth I can create instructions, it's not too complex but it takes a lot of time. I want to take part in TC7 contest so the next month I'll be very short of time. The main question is: what kind of receivers should we use? I think it will be ideal to place four of S-bricks for comfortable control but I have only two of them and that's why I can't test it. I simply connect four IR transmitters, one per PF channel. Thanks a lot! I think I have four MOCs like this but I really don't pretend to pro :)

Thanks for kind words! This version was started in autumn and there were large time gaps when I was taken part in competitions and built other models. I don't know parts quantity now :)

The topic is updated with new video: Hello All! Today I want to present one of my most complex models – Feller-Buncher. It’s the second version because the first one was unworkable and I was started it more than one year ago. The scale is approximately 1:15, model is based on John Deere 900 series Feller-Bunchers with leveling system. I haven't replicated body because I have a lack of green parts. These machines feel trees and stack them for easy removing. At the end of this post you can find the movie with complete demonstration but at first let's see what we have! Dimensions (max/min): 85(71) x 23 x 64(32) cm, total weight – 5870 g, ground clearance – 3.5 cm. Independent remote controlled functions: - moving (four L-motors, left and right tracks are independent). I use old type of tracks for smooth moving; - leveling system (two L-motors with independent control, four degrees of freedom: forward-backward, side-to-side, two diagonals); - tower rotation (two M-motors); - first stage of boom (two L-motors); - second stage of boom (one L-motor); - two-dimension feller head tilting (longitudinal – one L-motor, transversal – one M-motor synchronized with tower rotation speed); - two pairs of claws for productivity improving (two independent micro-motors). Manual functions: - saw blade (micro-motor); - lights (eleven LED pairs). The model has total eighteen motors (two synchronized additional motors are used for switching between modes of operation, because the number of RC functions is greater then number of Power Functions system channels). These motors are powered by seven IR receivers connected to four battery boxes and two accumulators. Let’s see the movie! More photos: https://flickr.com/photos/141718063@N06/albums/72157669793203555 Check this link for the building instructions: http://www.bricksafe...er/instructions In conclusion I would say that the model control isn't too comfortable. It would be ideal to place four of S-bricks here but I don't have them. Thanks for watching!

Nice truck!

Yes the model is almost finished!

I've read your opinion about s-brick in fast models and now I like my RC-units more and more. :)

Exellent work! Very fast, brutal and still beautiful!

I've replaced gear ratio from 1:1 to 1:3 so I've lost velocity but now it can move not only downhill :) Thanks for watching!

Monster! Very nice monster :)

Incredible! Very funny creation!

Very nice model! Don't stop at current stage! :)

Thanks a lot!

Yes, front RC motors really turn with front wheels so I don't need universal joints! Furthermore the gravity acting to these motors provides right castor angle. No damaged parts, only scratches :)

Thanks! All decals are from official sets :) I have rather bad photo now: