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Posted

I just finished the model's interrior (It has 5 seats) and tweaked the rear axle drive. Yes the motors drive it extremely well the low speed has enough torque to skid all wheels under power and the high gear allows a quite high top speed.

I also had to use some lubricant on the gearbox due to axles starting to melt in high gear deforming the casing and causing athe axles FUSING to the bearings... Expect a video and better pictures soon.

Posted

So here's the finished beauty:

p1210265.jpg

Size comparison to a minifigure...

p1240283.jpg

And the 41999:

p1210279.jpg

As you can see the sides are slightly sloped inwards, the roof is a studd narrower than the body:

p1210272.jpg

The axles are small, but very tough:

p1210273.jpg

And of course the all needed undershot:

p1210276.jpg

This is one of my biggest and heaviest models to date. But because of powerfull RC motors, gearbox and RC unit its one of the fastest and best performing too.

Each axle has a 1:4,2 gearing and even though they are very thin, they have no problems supporting the weight of this monster. Each axle is also supported on 8 positions, including 4 for springs. The rear axle uses 4 link suspension with upper links holding axle centered. The front axle uses one one arm to center it on the side, because the other side uses a linkage connected directly to RC unit's mechanical output for steering. This way I have precide and direct steering control.

Thanks to the eccentric driveline, there is a very low torque twist which allowed me to use soft springs (4 springs per axle like original) for best offroad perforamance. Soft suspension is also more forgiving when it comes to open differentials which I had to use for high speed driving and turning.

Besides being one of most detailed models its also a model with highest number of LEDs, here being 8.

Hope you like the video:

Posted

This very rare situation, when I saw video till yhe end!

Performance is better than I expected! Good job!

Posted

I'm impressed! The performance-to-weight ratio of this model is outstanding, so much to learn from this... I would not have believed 2 RC motors would make a 3 Kg. car run this fast!

Posted (edited)

I will shorten the front drive axle, but it needs room to move along with the front axle.

No, you don't need to shorten overall length. Just replace the one long axle with several short ones connected by 2L axle joiners. Also, it may be a good idea to make the rear suspension links at least as long as the front. In any solid-axled vehicle I've ever seen, the rear suspension links are always at least as long if not longer than the front suspension links, and the rear driveshaft is always longer.

Edited by Technyk32231
Posted (edited)

Very nicely done. Few questions though:

1. Did you actually use several LEDs (at least 4x2) or somehow managed to split the light and illuminate the many lights?

2. The 41999 plate number, that has got to be a sticker? UNless you got lucky and have an actual 2x4 tile with that number.

3. The 2x2 yellow tile, is that a Vayamenda (mahjqa) logo?

p1240283.jpg

Edited by DrJB
Posted

Very nicely done. Few questions though:

1. Did you actually use several LEDs (at least 4x2) or somehow managed to split the light and illuminate the many lights?

2. The 41999 plate number, that has got to be a sticker? UNless you got lucky and have an actual 2x4 tile with that number.

3. The 2x2 yellow tile, is that a Vayamenda (mahjqa) logo?

1.Looks like he used several as I can't think of a way to split one that much

2. No its an alternate license plate that came with the boss. Everyone who owns one of those has a EK 41999

3. Definitely looks like his logo

Posted (edited)

Wow, such a mad beast!!! How come you left the midle u-joint unbraced, were there no problems cause of that? You sure like to clean you bricks :-P

I left the axle unbraced because the gearbox output is not "in system", its at an angle. Also there was no need to, the axle has yet to fall out.

There's also a video of me cleaning the model, but I left it out... It was REALLY messy. And DONT DRIVE YOUR LEGO THROUGH MUD. It got inside the hubs and hardened itself, so I had to take the whole axles apart inculding the hubs, clean and lubricate them with siicone spray.

Very nicely done. Few questions though:

1. Did you actually use several LEDs (at least 4x2) or somehow managed to split the light and illuminate the many lights?

2. The 41999 plate number, that has got to be a sticker? UNless you got lucky and have an actual 2x4 tile with that number.

3. The 2x2 yellow tile, is that a Vayamenda (mahjqa) logo?

Yes I used a total 8 LEDs, the most I ever used in a single model.

41999 plate is a sticker yes.

I got Vayamenda from Mahjqa personally as a gift, so why not use it to show my respect :wink:

Anyone interested in the lxf for the chassis?

Edited by Zblj
Posted

Anyone interested in the lxf for the chassis?

First off this is the best G Wagen in lego form I have ever seen :wub::thumbup: :thumbup: :thumbup: and after driving one (the standard 300G petrol) I'm hooked. Its the best standard off-roader and i would definitely want this one displayed on my shelf.

So Yes Please i would most definitely be interested in the LXF for the Chassis

Great work Outstanding :wink:

Posted

Zblj,

I am surprised that it is holding together.

  • What voltage are you running the system on?
  • Can it withstand full throttle direction changes on carpet?
  • Can it withstand full throttle/full speed obstacles?
  • Can it lift a tire when accelerating from a direction change?
  • When the tires become blocked, does it stall the motors or break something?
  • Do you think that you would have problems if you went to a bigger tire or one with more traction?

Much like a full size off road vehicle there is world of difference between a stock truck strength and a purpose built rock bouncer.

I wouldn't be surprised if things started to fall apart once you starting abusing the truck.

very respectfully,

Andy

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