Hello everyone,

I'd like to show you my Classic Land Rover Defender with 4 L motors for driving and RC electronics.

 

 

I didn’t originally plan to build a Land Rover Defender model. My idea was to build a chassis with a 2-speed gearbox, locking center and rear differentials, suitable for an off-road vehicle. And once the chassis was ready, all that would be left was just to find the right body.

Drivetrain & gearbox

For propulsion, I used 4 L motors connected in pairs. The motors are geared up (20:16) and then connected to the gearbox.
In the first (low) gear, the movement goes to the 12:20 gears and then directly to the drive shafts, the center differential is locked.
In the second (high) gear, the movement is transmitted to the central differential through a pair of 16-tooth gears with a clutch.

 

1st gear: 20:16 -> 12:20 -> 14:22 (diff in axles) -> Planetary hubs => 11.31:1
2nd gear: 20:16 -> 16:16 -> 14:22 (diff in axles) -> Planetary hubs => 6.78:1

Front & rear axles

The front axle was inspired by the Jeep Wrangler model by gyenesvi. The differential here is always open.

The rear axle has a locking differential, activated by a GeekServo motor.

I experimented with the 9.5L shock absorbers, but they were too long for this model, so I decided to go with the standard 6.5L shocks with a hard spring. The suspension is soft, with good travel.

Bodywork

Once the chassis was ready, I started to choose the body - after several attempts I found out that the classic Land Rover Defender 110 was the best candidate!

Even though the reference image I found shows a 5-door version, I decided to build a 3-door version to simplify the body and reduce the weight.
The bodywork design was heavily inspired by the Land Rover Defender 110 model by Sheepo. I decided to build it in red, luckily LEGO has enough red parts to build the body.
I made the body modular, so that it can be quickly disassembled into large pieces for maintenance or modifications.

All 3 doors have locks.

I was primarily focused on playability, so I decided to sacrifice the fake engine and place the battery (3x18650 LiPo) under the hood for better weight distribution. The curb weight of the model is 2.40 kg.

In order to have a working steering wheel, I used a second GeekServo motor. It’s connected to a separate receiver channel, which mirrors the 1st (steering) channel. The gearstick also works - it's connected to the gearbox with a technic link. The interior is simple, the seats are taken from the 42110 LEGO set.

In the end, I am very satisfied with the model – it has a cool appearance, enough power for outdoor play, and a reliable transmission!

 

Great work!

I really like that you added a full interior and spring-locks to the doors.........but the chassis stands out to me more with that gearbox and 3x Geekservo`s (quite a handful of servos :)) ).

That is a cool model! Style and performance is always a good combination, and it's cool to see Geekservos being used in something that isn't just about performance

Very cool model.

Thank you all!!

 

1 hour ago, Lixander said:

...  and 3x Geekservo`s (quite a handful of servos :)) ).

4 servos :) One for steering, one for gear shifting, one for rear differential lock and a separate servo for the steering wheel. There were not enough space (or I just couldn't make it) to connect the steering wheel directly to the steering system, so I decided to use an additional servo only for the steering wheel. So 4 servos in total :)

 

 

 

I love it! It looks great and performs great. The video was also good, you found some really good locations to film at and put a lot of effort into the video and it shows. One thing I noticed was the subtitles describing the model were on screen barely long enough for me to read. The footage of the studio model spinning around also felt a bit quick. But overall, I think you've done a wonderful job!

15 hours ago, orangetrialtruck said:

4 servos :) One for steering, one for gear shifting, one for rear differential lock and a separate servo for the steering wheel. There were not enough space (or I just couldn't make it) to connect the steering wheel directly to the steering system, so I decided to use an additional servo only for the steering wheel. So 4 servos in total :)

 

 

 

My bad 🥲

But still a great model! :)

18 hours ago, Aurorasaurus said:

I love it! It looks great and performs great. The video was also good, you found some really good locations to film at and put a lot of effort into the video and it shows. One thing I noticed was the subtitles describing the model were on screen barely long enough for me to read. The footage of the studio model spinning around also felt a bit quick. But overall, I think you've done a wonderful job!

Thank you very much for the feedback, next time I'll try to take it into account!
I took the model with me on vacation specifically for filming! :)
 

 

What a sturdy and playful model we have here! Nice spots to shoot the video. I especially like the amount of geek-servo motors you were using, each with individual purpose. Not gonna lie, I learned a lot  - thanks to your detailed overview of the model. Everything is well presented, and you have an eye to highlight the ups of your model, yet again, I appreciate that. Moving switches in the cabin are also a plus. One thing, I don't know if it is just me, but in your video (1minute 18 second - I could see that the geometry of driveshaft is slightly off, axles are not fully inserted). I also have a feeling that the rear trunk door handle operates in reverted movement. But don't let those small things bother you. I am sure your next model will be even better, I can't wait for your next work show.

PS I also like how you "force" closing central differential by spinning front and rear axle in the same speed, but the 1st gear only rotates differential gear case - I will for sure need to remember that technique.

 

12 hours ago, Krxlion said:

What a sturdy and playful model we have here! Nice spots to shoot the video. I especially like the amount of geek-servo motors you were using, each with individual purpose. Not gonna lie, I learned a lot  - thanks to your detailed overview of the model. Everything is well presented, and you have an eye to highlight the ups of your model, yet again, I appreciate that. Moving switches in the cabin are also a plus. One thing, I don't know if it is just me, but in your video (1minute 18 second - I could see that the geometry of driveshaft is slightly off, axles are not fully inserted). I also have a feeling that the rear trunk door handle operates in reverted movement. But don't let those small things bother you. I am sure your next model will be even better, I can't wait for your next work show.

PS I also like how you "force" closing central differential by spinning front and rear axle in the same speed, but the 1st gear only rotates differential gear case - I will for sure need to remember that technique.

 

Thank you very much for your feedback! :)

You are absolutely right about the studio model - the geometry of driveshaft is slightly off - I definitely need to improve my Studio skills :)

Regarding the central differential - I took the idea from this MOC: MOC - BUWIZZ Motorized chassis for Set 42110 Land Rover Defender by Superkoala.