If you look from this angle, racing is just bunch of attention seekers driving around in circles. And people even pay to watch them do it!
And the whole point in life is to dye. (you probably know what I'm thinking)
Sorry got carried away and I meant no disrespect for racers!

Well... if I wanted 1/5 CAR I would buy 1/5 car, wouldn't I?
I agree tracks are one of the most inefficient means of transportation. They have a lot of friction between links, heavy, maintenance heavy an bad part support.
Why waste time and money to build something that inefficient? I like tracks.
1/5 scale car could do everything from the video for 1/2 the price, yes. Now look at my first post saying that it is not as fast as I hoped and I am working on version 2. Fast is also somehow related to $, so you want fast? Bring me esc and motor that can handle 16s and this thing will fly!
When I wrote Racing tracked vehicle I had in mind 1/5 buggy track not crawling track.

I have to get my hands on some smaller pinions for climbing.
I don't have any newer photos. At the moment it is disassembled and I hurt my left arm being an attention seeker and driving bike too fast. Maybe I could get a friend to lend me a hand.

Thanks everybody!

This is how Chinese catalog looks like:


And after 30+ mails to different "number 1 Chinese rubber track manufacturers" I finally got something that roughly represents a drawing. Its a screen shot, 200x200 pix. I modelled 100a and 100b to get better idea how this tracks look like and how would they fit my build. 100b came out as shown in catalog, weight is roughly the same. Guide fins are 15mm tall, outside profile is 12mm tall. This one is my favorite at the moment.

How ever 100a looks a lot different then on the catalog. In catalog inside guide fins look very tall, but on drawing they are only 9.5mm tall and outside profile is 15 mm tall. Weight is also almost identical to 100b (even taking in account that 100a in catalog is longer).

Any suggestions what to improve? (negative comments are also welcome as long as they are not trolling)

very good jobs

it is very hard racing...........?

It is hard to drive, seriously needs a gyro to stabilize it.

I think you are missing your opportunity here. Add an FPV camera and market it to ski resorts for ski patrol use. Might want to put an LED light on it too for use in low visibility.

That's a great idea, just need to make it lighter. It will need less power and less betters, or have better range with same batteries.

And production rubber track will help a lot. My track weights 5kg each, and it has over 750 parts. It takes a long time to assemble.

Be prepared to be surprised if they will work,Kemen.
Also,I would order one of each to see what will work better.
If neither will do,send both back and tell them what you need.

If the tracks are too short,can you add to them?

I WANT!!!

This was hand built from scratch and is one of a kind.

Engineering master,he is.

He had few sources to build from so it's really hard to get it right the first time.

The tank guys were not much help.

So here he is. Maybe we can.

Props!

I have access to cnc mill and lathe, it's time to finish version 2. I may make few more if needed

I have a favor to ask, can someone measure losi 5ive shocks: lenght eye to eye, shock body diameter, shock travel, outside diameter of spring.
What do you guys think is slipper clutch really necessary?

Shocks: I found this..http://www.rclargescale.com/forum/lo...estions-2.html
Took a while to find it!
See #23 post.

slipper? Depends on how tough the drive train is.

LMAO !!! LMAO !!!! ROTF FLOOR !!!!