Monster

[Junpei]

I think it might have better performance if you support the 8L axle more by adding this some extra parts. Put a 4L stop axle where the blue dots are:

And stack on 3 thin 3L liftarms (http://www.bricklink.com/catalogItem.asp?P=6632)

Did you not do that because it may jam the 24t gear in the portal axle?

[skppo]

I think it won't fit inside the rim. Look at the picture of the bottom.

See how close the rim is to the hub? The bushings are actually inside the hole of the rim.

[Zerobricks]

I think it won't fit inside the rim. Look at the picture of the bottom.

See how close the rim is to the hub? The bushings are actually inside the hole of the rim.

Exactly, wheel goes in all the way.

[Junpei]

Oh, sorry. I guess I should have known the rim offset wasn't that much, it makes much more sense now.

[zux]

The 24 tooth gears and 3L pins provide the interface. But remember the 8L axle withs top may be pernamenlty bent cause of the sheer power

I see you have one point of touch with an axle here. I have tested earlier, a bit different solution: use same 24T gear, but from both sides of the rim, with just two 3L pins in each of them. As a result RC rim is fixed on axle in two points and it doesn't slide too much into sides, some half bushes greatly improve this.

[Boxerlego]

If you were to use the upgraded XL motor I believe the torque would be a total of 1037.N.cm

Edit: My math was wrong on the gear ratio ..I flip the 24 gear with the 40 gear for max torque and step up the gear ratio up to 1:15.003. and that was not calculating the wheel torque too...

Edited November 23, 2013 by Boxerlego

[Junpei]

If you were to use the upgraded XL motor I believe the torque would be a total of 1037.N.cm

[Zerobricks]

The promised video:

[Alasdair Ryan]

Water and electrics don't mix....

It has good off-roading capability's.

[JM1971]

Can certainly climb, monster conquers all :D

[z3_2drive]

Still baffled at how your 12t gears stay together after pulling a damn CAR! Awesome MOC

[Junpei]

Wow, incredible performance! I can't believe it can pull a car!! A bit off topic, but I'm surprised you still have your 6x6 assembled, do you keep all of your MOCs?

[Milan]

It does not spin tires when pulling car? Ok, not pulling, but it moved the car...!

[T_Tank]

Holy smokes that little thing can pull a car o.o!

Really surprised you can get enough torque out of those lego motors definitely awesome work. For kicks should take that with you to a group of rc rock crawler guys an see what they think of the power of lego!

[Rishab N]

Wow it managed to move the car!

[Tamas Juhasz]

Great performance, congrats!

I think the car pulling want's to be a joke. The question: was the car in a slope (even on a 0,5 % one) or was pushed by someone?

Let's count a bit: if the car is ~ 2 kg, and g is 10, then you have 20 N vertical force from the weight. --> This is the theoretical maximum pulling force. 20 N doesn't moves such a car.

Edited November 17, 2013 by Mbmc

[Rockbrick]

yes i'm sure it was a joke

Still has got to be the ultimate crawler and 100% lego - you cannot get close to this unless you use after market tyres.....

[Boxerlego]

Simply Amazing! That was incredible watching it climb up that rock face with wet tires. I never doubt the fact that is was able to pull the car. Pulling the car is actually easier than you think. Watch this 92 year old guy pull this car by his teeth

[skriblez]

Awesome video!

[Tamas Juhasz]

Simply Amazing! That was incredible watching it climb up that rock face with wet tires. I never doubt the fact that is was able to pull the car. Pulling the car is actually easier than you think. Watch this 92 year old guy pull this car by his teeth

Don't compare a man to a 2 kg little construction. WEIGHT does matter! It's so simple. If you show me a video, where a 2 kg car pulls a ~ 1000 kg real one (with real road tyres, not extreme wheels), I believe. But it's physic. Anyway why we can't see 100% of Zblj's car in the video?

[Boxerlego]

Can I compare the 2kg lego to a .008g ant?

Edited November 20, 2013 by Boxerlego

[Zerobricks]

So while making the LDD model, I found a way to slightly change the gear ratio to get more speed, because frankly speaking there was enough torque as it was... So the gear ratio changed from 1:5,4 to 1:3,6

Now the monster is slightly faster than 41999, while creating much more torque and being more maneuverable despite the fact it has no diffs.

I used a slightly different solution to move the 24 tooth gears half a stud closer to the main drive axle using the thing rod:

And the model in LDD:

DOWNLOAD LDD FILE:

www.brickshelf.com/gallery/zblj/Trial/Monster/monster.lxf

[bricky300]

You still didn't answer wether it can move a car or not... So?

[Zerobricks]

Yes it can, I didnt fake it...

[JM1971]

A F1 car can be pushed with one finger they are that well balanced but a road car I dunno how much force it takes to move one, 4 XL motors is a lot of torque and those wheels are very grippy, if the driveway is inclined just right then I think its possible.