This is the result of mixing PF and Rc's. This is by far the fastest, most hyperactive and craziest offroader i built. The power of 2 RC motors combined with the lightness of LiPo battery boxes and unimog's suspensin parts results in a truck that weighs arround 800 grams, yet has the power/weight ratio of over 4x than anything before. Gear ratio is only 1:9, which makes it by far the fastest crawler ever!

To solve the problem with 8297's wheel slipping on rims, I decided to use the wider power puller rims. This did result in the truck being a bit wider than 25 studs by a stud.

Suspension components and portal axles are from the unimog set (thanks to Dluders) to keep everything simple and light. Using my traditional portal hubs wouldnt work with these wide wheels.

Suspension allows for good flex thanks to the long springs:

Thanks to the wider rims the wheels are now actually softer and actually splat under the wight of the crawler, therebye increasing the contact patch and allowing crawler stunts like this:

Please check the video:

There is also an LDD file available without the unimog parts and the cab (too complex shape for LDD).

LDD file

Hope you like it!

Edited March 11, 201212 yr by Zblj

Wow!

The first seconds of this video really impressed me. And the "F... Yeah" made me laugh

What a great vehicle. The rollcage/outside looks very cool with the strange angles.

Good job!

@ Zblj: Whoa, that Lego Technic Rock Crawler IS fast! Do you know how long it can run on the two Lego LiPo Rechargeable Battery Boxes, before it slows down and needs to be recharged?

It's good to have the combination of the 22969 Power Puller "Wheel 62mm D. x 46mm Technic Racing Large" on the Unimog's 92908 portal axles:

From Barman/ Barman76's Flickr photoset:

Too bad the upcoming 9397 4x4 Crawler does not do the same thing; it uses the smaller 8297 Off Roader's wheels:

I was very impressed when i saw the video on youtube. I love the roll cage and suspension. Nice job!

tim

At first sight of the title, I thought you built something like this...

I like your practical and robust design very much, it seems that nothing could stop this little guy.

Here are more pictures of Zblj's Lego Technic Panther Rock Crawler Offroader (to aid in making the rollcage and to see various details):

Edited March 11, 201212 yr by DLuders

Cool crawler. Is it powerful enough and competitive for TT challenge?

Can you try&post video with 16/16 or 12/20 gear at portal hubs? Very interesting:)

Edited March 12, 201212 yr by rm8

I've been working on a similiar concept.

-4 links front and rear

-PP tires

-2 RC motors

-geared 20:1

I keep stalling the motors.

Amazing work ZBJ that crawler is really flying XD. Its definitely not crawling its way around its more like VROOOOOOOOOOOOM I"M UNSTOPPABLE!!!

The performance of this thing is phenominal. I'm amazed by the power you get from 2 RC-motors and 2 battery-boxes.

Zblj's Brickshelf folder for the Panther has been made public.

Thanks for all the replies guys! About run time, I think it can run for some 2-3 hours before the battery boxes shut off. I can try 12:20 gear combo in the portal hubs, but that would make it less torquey

Awesome looking crawler will have to order myself some parts this weekend and rebuild this baby :)

I was the first to build this!

I was the first to build this!

What do you mean by ''the first'' ?

Awesome MOC!

With orange the panther looks brilliant and it has cool wheels^^

What do you mean by ''the first'' ?

I was the first person to complete his instructions and build the chassis. I did it the night that the LDD file went public!

Is this the motor you used?

Also, is there a reason you chose to use the non rechargeable packs?

Edited June 29, 201212 yr by Follows Closely

Is this the motor you used?

Also, is there a reason you chose to use the non rechargeable packs?

Yes it is. Two such motors.

Norecharg.boxes are heavier.

Yes, but Zblj may have wanted MORE VOLTAGE available from non-rechargeable, Alkaline batteries. The Power Functions Rechargeable Battery Box only produces 7.2V, while 6 ea. new AAA alkaline batteries can produce 9V for those high-current RC Buggy Motors.

Yes, but Zblj may have wanted MORE VOLTAGE available from non-rechargeable, Alkaline batteries. The Power Functions Rechargeable Battery Box only produces 7.2V, while 6 ea. new AAA alkaline batteries can produce 9V for those high-current RC Buggy Motors.

Yes, they produce more voltage, but are also heavyer, so its not such an easy choice.

Well, it's a very simple matter to test! You'll just have to build another version with the non-rechargeable battery boxes as close to this one as you can, and tell us what the results are!

Well, it's a very simple matter to test! You'll just have to build another version with the non-rechargeable battery boxes as close to this one as you can, and tell us what the results are!

Only problem is I dont have the parts or battery boxes for a new one Unless someone wants to buy one...

Hi guys,

Sorry to bump up an old thread. Newb at Technic after 20 years of my dark ages - but I've been lurking here for a while. I just wanted to show off my crawler (calling it Tarantula because of the tires) built around Zblj's Panther chassis. I may have went overboard with the roll cage but I like it. Thanks to Zblj for the awesome design - being light weight and extremely fast and having a good balance of weight and power! The way it is geared right now is that it is powerful enough for the Dick Cepek power puller tires (each having two 44772 rims). I just ordered the lighter Krazy crawler tires from RC4WD and will switch to using 12t/20t to see if it performs faster with decent torque.

You can also check out other pics at brickshelf: http://www.brickshel...ry.cgi?f=527946. I apologize before hand for the large image (if it shows)... Like I said, I'm new at posting here...

@ GDomino: Welcome to Eurobricks! Are those tires the RC4WD Dick Cepek 1.9 Giant Pulling Tires mounted on two Lego 44772 wheels, side-by-side? If so, we'll have to add them to the "Third Party Tires for Lego Technic Rims" topic.

Specifications:

• Outer Diameter: 4" (101.6mm)
  
• Width: 2.74" (69.7mm)
  
• Inner Diameter: 1.9" (48mm)
  
• Very Aggressive Tread
  
• Custom designed rubber formula
  
• Reinforced sidewall
  
• Each tire weight: 4.5 oz / 127 g
  

Edited May 14, 201311 yr by DLuders