MOC: Willys Jeep

[efferman]

Hi Guys, iam starting the willys Jeep project with a question: which axle would you choose for the willys? The left or the right?

the left has a 1:4 gear ratio and the right, a portal axle, a 1:2.779 gear ratio between wheel and pivot point.

both axles have the same wheelbase, but the pivot point is at the left axle one stud wider. what is your opinion?

[DLuders]

Here are some photos of real Willys Jeep axles to help you decide:

[efferman]

thanks for the pics and in special for the exploding view. but what is your opinion?

[Zerobricks]

None , Why dont you use u joints and 8 and 24 tooth gear? this way you have less gears, no vertical axles and friction that comes with such transmissions.

[efferman]

None , Why dont you use u joints and 8 and 24 tooth gear? this way you have less gears, no vertical axles and friction that comes with such transmissions.

Since the gearcrusher i dont like 8 tooth gears and U-Joints at high torque positions. And with this combination i would have 2 studs less between the pivot points. So short as possible, this is a point in which iam be a fanatic.

ok, the 14 tooth bevel gear is not the strongest gear, but i want to try it

Edited January 18, 2011 by efferman

[yoraish]

Since the gearcrusher i dont like 8 tooth gears and U-Joints at high torque positions. And with this combination i would have 2 studs less between the pivot points. So short as possible, this is a point in which iam be a fanatic.

ok, the 14 tooth bevel gear is not the strongest gear, but i want to try it

If you saw any of my trucks, they ALL use 8 tooth gears and U joints, they are not as fragile as you may think.

[efferman]

then you are a better designer than me. my

had killed four 8 tooth gears at the same time during only 10 minutes driving.

[Sariel]

Since the gearcrusher i dont like 8 tooth gears

You will start to appreciate 8-teeth gears once you see how 14-teeth gears handle the torque (or should I say: how they yield to it), trust me.

[efferman]

You will start to appreciate 8-teeth gears once you see how 14-teeth gears handle the torque (or should I say: how they yield to it), trust me.

I believe you and i will look at an other solution

[Blakbird]

I like the one with turntables in the hubs because it is a unique solution and because it looks kind of like brake drums. That old bevel gear driving the ring gear of the turntable will probably break, but if this is just a model and not for a competition, then that doesn't matter. If you really want it to climb obstacles, then that part probably needs to be stronger.

[efferman]

no, competition is not the goal, it has the wrong scale. if it goes over my rock crawling parcour, which you could see in my vids, i will be very happy. but it is no need

Edited January 18, 2011 by efferman

[dhc6twinotter]

I like the axle on the left. That turn table is a great solution, and I agree with blakbird about it looking like drums. I really do like those stretched tires too.

Would it be possible to use a u-joint and attach it directly to the turn table? You wouldn't have any gear reduction, but it wouldn't reqiure any gears and the pivot point or width wouldn't be affected. I suppose you are wanted some gear reduction, so this idea may be mute, but I don't think the 14t gear will last long.

I like your use of all those unique parts. It's giving me some inspiration for the front axle of my backhoe project.

I'm looking forward to seeing your finished project! Nice work as always.

[yoraish]

then you are a better designer than me. my

had killed four 8 tooth gears at the same time during only 10 minutes driving.

No, I'm not saying that, I just think you should secure these gears more, and absolutely put some more reduction after the U joints. Trust me, I have a lot of broken gears from

and some prototypes of monster trucks. You see, check out my logo....

[efferman]

Would it be possible to use a u-joint and attach it directly to the turn table? You wouldn't have any gear reduction, but it wouldn't reqiure any gears and the pivot point or width wouldn't be affected. I suppose you are wanted some gear reduction, so this idea may be mute, but I don't think the 14t gear will last long.

using a u-joint is possible but i want a high gear reduction which i could use for future projects. and they will become much heavier.

No, I'm not saying that, I just think you should secure these gears more, and absolutely put some more reduction after the U joints. Trust me, I have a lot of broken gears from

and some prototypes of monster trucks. You see, check out my logo....

the 14 tooth jumps over when it has to much load. i hope this will prevent a breaking of the 14 tooth. i will see how it works and if it not work.......

[allanp]

You could try the front axle from a JCB i'm working on. It can handle ALOT of tourque and has 1:3 planetary reduction within the hubs.

I am also planning to use something similar in a monster truck.

But to be honest with you, If I was modelling one of those particular jeeps I would not have any gear reduction.

[richthelegodude]

I am bit of a purist when modelling cars, so I think DLuders is pointing in the right direction in using the live axel design of a real Willis jeep. I have always been tempted to model a Land Rover defender, which also uses live axels.

That said I do like the look of the left hand side, as they do look like drum brakes .

Thats going to be one awesome JCB AllanP . You can stare at an 8868 and say the wise words of Crocodile Dundee (modified of course!) "Call that a compressor ? This is a compressor!"

[efferman]

allan i will try to bring your system in my preferred dimensions

[allanp]

allan i will try to bring your system in my preferred dimensions

Glad I could give you some ideas!

Thats going to be one awesome JCB AllanP . You can stare at an 8868 and say the wise words of Crocodile Dundee (modified of course!) "Call that a compressor ? This is a compressor!"

LOL thanks, it's a pretty powerful and compact compressor, run by one XL motor it can run many pneumatic functions and will give you all the power you'll ever need. Also, you can run the air hoses to look like exhausts so it doubles as a realistic looking engine.

Edited January 20, 2011 by allanp

[Crtlego]

I really like the left ones because of the turntable but I don't think that first bevel gear would survive.

I really like the one on the right because it has amazing clearance!

Just curious.. I don't know if the actual Willys Jeeps do but are you going to have a differential? I would imagine that you would but just wanted to ask. I would figure that the actual Jeeps have some limited slip differentials but the ones in Lego are not exactly space efficient but then again I know just about nothing about those Jeeps except for that one episode I saw on the Science Channel.

[efferman]

I really like the left ones because of the turntable but I don't think that first bevel gear would survive.

I really like the one on the right because it has amazing clearance!

Just curious.. I don't know if the actual Willys Jeeps do but are you going to have a differential? I would imagine that you would but just wanted to ask. I would figure that the actual Jeeps have some limited slip differentials but the ones in Lego are not exactly space efficient but then again I know just about nothing about those Jeeps except for that one episode I saw on the Science Channel.

good question

currently i think about two possibilities:

like original:

no gear reduction but differential, drumbrake design and flat spring design.

trial:

portal axles on a unimog chassis, one PF-xl per each side, to simmulate a differential, not to make skid stear possible. with one word: extreme

damn, i could me not decide

[Zerobricks]

Or wait for the new part from 8070, which would make portal hubs even more compact.

[efferman]

Or wait for the new part from 8070, which would make portal hubs even more compact.

do you seriously think that a part like this will come? i think the unimog will have a double wishbone suspension.

but anyway , i dont want wait 8 months

[dhc6twinotter]

I say if you want portal axles on your Jeep, then go for it. There are Jeeps and Toyotas driving around with Volvo and Mog axles under them. A friend of mine is thinking about putting Volvo portal axles under his '98 Toyota 4Runner (aka Hilux Surf).

However, if you are thinking about making the Jeep look as factory as possible, than maybe a normal straight axle may be more appropriate.

I think either way is fine, and it all just depends on the kind of build you are going for.

Edited January 22, 2011 by dhc6twinotter

[efferman]

good evening

After a lot of thinking i have made my decission. it will be a Willys Unimog Hybrid. The chassis is inspired by a unimog and the body will be hopefully easiely to identificate as a willys.

This is the current standing

(Brickshelf folder)

I have made two steerable portal axles, to let me the way open to get a 4x4x4. but maybe i will block the rear steering.

the possbile lacing bond is huge, but the final model will not have the full way. I dont want destroy the willys look with a to high ground clearance.

The final gear ratio is currently 1:21.459 and it seems i have find a good compromise between speed and climbing ability. the naked chassis, which you can see on the pics, have no problems with a 45° ascending slope.

i hope the final performance is nearly the same.

Edited January 23, 2011 by efferman

[Zerobricks]

1:21 gear ratio from Xl motor or RC?