57 minutes ago, KikoTube said:

Hmm, i think a half stud should be enough between shocks and steering links. But I would be grateful if somebody could build it and try it out. 

I did the same for my new axle, it should be a level car.

My new axle:

https://bricksafe.com/files/aventador2014/CollaborationSupercarSuspensionRearLXF 2.0.lxf

11 hours ago, KikoTube said:

Hmm, i think a half stud should be enough between shocks and steering links. But I would be grateful if somebody could build it and try it out. 

I didn't see the half stud space. It must be okay the way it is.

9 hours ago, Aventador2004 said:

My new axle:

https://bricksafe.com/files/aventador2014/CollaborationSupercarSuspensionRearLXF 2.0.lxf

Great, I'll be integrating the two axles into a first version of a modular framework.

4 hours ago, Didumos69 said:

I didn't see the half stud space. It must be okay the way it is.

Great, I'll be integrating the two axles into a first version of a modular framework.

Ok! Be sure to tell me if it needs any change.

4 hours ago, Aventador2004 said:

Ok! Be sure to tell me if it needs any change.

Well, one thing I don't understand: why did you use U-joints? Their centers don't align with the mounting points of the suspension arms. I would use CV-joints, but I can fix that too. I'm at it anyway.

3 minutes ago, Didumos69 said:

Well, one thing I don't understand: why did you use U-joints? Their centers don't align with the mounting points of the suspension arms. I would use CV-joints, but I can fix that too. I'm at it anyway.

Just looked, it was because I was using 5L arms, then changed it. They were not changed. Thanks for noticing.

I am away from my PC right now, so I can't check any LDDs, But I'll test it out once I get home.

So it seems in the direction post that I have put for gearbox. Cool, I'll get to it once I'm back from travels. Thanks for organizing this @letsbuild!

3 hours ago, BrickbyBrickTechnic said:

So it seems in the direction post that I have put for gearbox. Cool, I'll get to it once I'm back from travels. Thanks for organizing this @letsbuild!

Yep, no problem! I'm quite enjoying it!

I also have some schooI things going on so I can't make progress in the next few days :(

Hi,

I made a first attempt to integrate the front and rear axles into a framework. I took the liberty to make some changes to the axles as well. I switched the gear-rack to the back-side of the front axles to keep the front side of the axles low and to leave max space for the adjustable headlights. I also form-locked the 5L levers holding the suspension arms a little better. At the back-side of the front-axles I used some T-bones to give stability and to weave the front axles to the mid-section of the chassis. I also added a gear-rack slider and removed some of the steering axles for now, as much will depend on the position of the steering wheel and HoG (do we want a HoG? @letsbuild).

In the rear axles I removed some of the 11x5 frames and swapped the cross-blocks holding the suspension arms with the width-wise beams. I used different pins to attach the shocks to the suspension arms and I changed the back-side to make it more similar to the front axles. I also moved the 20t gear that meshes with the differential to the back-side. The main reason to do this is to allow for some gearbox or engine axles sticking in the front-side of the frame holding the differential. If eventually this turns out unnecessary, we can always simplify this.

For the mid-section I already installed a center differential at the right height (so it doesn't stick out the bottom), which is one stud higher than the axles running underneath the front and rear differentials, hence the 8t gears in the front and rear axles. I also put in a dummy floating gearbox layout and drive-shaft, but these are just placeholders. It would be nice if @BrickbyBrickTechnic could somehow integrate the center differential in the gearbox. @IA creations, do you have a LXF-file of your engine? If not, I can make it and add it to the framework.

The red pins with axle hole serve to connect the front and rear modules to the center module. I made groups for the 3 modules.

Please note that nothing is definite yet. If you want to add stuff to the framework, please use this LXF-file, feel free to remove parts that conflict with your additions and share your changes here. I'll make sure to merge all changes back into the master version and upload it to the same url.

In the LXF-file I inclined the suspension arms to fit the shocks. Note that the shocks are fully expanded in the renders; in real life the model will sit deeper in its suspension.

Please review the LXF-file.

Edited April 12, 20186 yr by Didumos69

Smells like Ford RS200, just dreaming away ...

Except for the butterfly doors  It does have a lot in common though, even the double shock setup.

9 minutes ago, LvdH said:

Except for the butterfly doors  It does have a lot in common though, even the double shock setup.

Yea, and the adjustable headlights. Btw, I don't intend to hook this project up to a single real-life car. The features defined by @letsbuild are fine by me. I just find this kind of resemblance inspiring and it adds to the feeling that we're actually getting somewhere.

@Didumos69

Really enjoying that Chassis...

It's coming along very nicely 

 

I'm voting for HOG Steering

 

 

Edited April 12, 20186 yr by KikoTube

4 hours ago, Didumos69 said:

Hi,

I made a first attempt to integrate the front and rear axles into a framework. I took the liberty to make some changes to the axles as well. I switched the gear-rack to the back-side of the front axles to keep the front side of the axles low and to leave max space for the adjustable headlights. I also form-locked the 5L levers holding the suspension arms a little better. At the back-side of the front-axles I used some T-bones to give stability and to weave the front axles to the mid-section of the chassis. I also added a gear-rack slider and removed some of the steering axles for now, as much will depend on the position of the steering wheel and HoG (do we want a HoG? @letsbuild).

In the rear axles I removed some of the 11x5 frames and swapped the cross-blocks holding the suspension arms with the width-wise beams. I used different pins to attach the shocks to the suspension arms and I changed the back-side to make it more similar to the front axles. I also moved the 20t gear that meshes with the differential to the back-side. The main reason to do this is to allow for some gearbox or engine axles sticking in the front-side of the frame holding the differential. If eventually this turns out unnecessary, we can always simplify this.

For the mid-section I already installed a center differential at the right height (so it doesn't stick out the bottom), which is one stud higher than the axles running underneath the front and rear differentials, hence the 8t gears in the front and rear axles. I also put in a dummy floating gearbox layout and drive-shaft, but these are just placeholders. It would be nice if @BrickbyBrickTechnic could somehow integrate the center differential in the gearbox. @IA creations, do you have a LXF-file of your engine? If not, I can make it and add it to the framework.

The red pins with axle hole serve to connect the front and rear modules to the center module. I made groups for the 3 modules.

Please note that nothing is definite yet. If you want to add stuff to the framework, please use this LXF-file, feel free to remove parts that conflict with your additions and share your changes here. I'll make sure to merge all changes back into the master version and upload it to the same url.

In the LXF-file I inclined the suspension arms to fit the shocks. Note that the shocks are fully expanded in the renders; in real life the model will sit deeper in its suspension.

Please review the LXF-file.

Excellent job, so far! Don't forget that Brickbybricktechnic is building the gearbox.

HOG is a yes, please integrate it!

1 hour ago, Didumos69 said:

Smells like Ford RS200, just dreaming away ...

Thanks for pointing that out!

38 minutes ago, letsbuild said:

Don't forget that Brickbybricktechnic is building the gearbox.

Of course! To make that more clear I removed the floating gears from the LXF-file.

The rear axle suspension looks to have a huge travel with the way the springs are mounted. Is it possible to move the lower attachment points closer to the wheel (and the upper attachment points lower?)

47 minutes ago, Jeroen Ottens said:

The rear axle suspension looks to have a huge travel with the way the springs are mounted. Is it possible to move the lower attachment points closer to the wheel (and the upper attachment points lower?)

In fact the rear suspension has the same geometry as the front suspension, only the shocks sit 1 stud higher than in the front and in the front travel is limited because of the axle above the suspenson arms. But we could do this in the back: It would lower the back a little, but the sspension will be more rigid, so eventually it might turn out fine. It will be a lot harder to do something similar in the front though.

I don't have it and I can't make it either right now @Didumos69

6 hours ago, Jeroen Ottens said:

The rear axle suspension looks to have a huge travel with the way the springs are mounted. Is it possible to move the lower attachment points closer to the wheel (and the upper attachment points lower?)

I don't know how well that may end up, I set it to be same spring tension and height as front.

Thanks for the changes @Didumos69, I am happy to have helped the project!

13 hours ago, KikoTube said:

I'm voting for HOG Steering

 

+1

The chassis looks great @Didumos69!

It almost looks like the SBrick/buggy motor chassis I built last year... (that I never posted)

14 hours ago, Jeroen Ottens said:

The rear axle suspension looks to have a huge travel with the way the springs are mounted. Is it possible to move the lower attachment points closer to the wheel (and the upper attachment points lower?)

13 hours ago, Didumos69 said:

In fact the rear suspension has the same geometry as the front suspension, only the shocks sit 1 stud higher than in the front and in the front travel is limited because of the axle above the suspenson arms. But we could do this in the back: It would lower the back a little, but the sspension will be more rigid, so eventually it might turn out fine. It will be a lot harder to do something similar in the front though.

8 hours ago, Aventador2004 said:

I don't know how well that may end up, I set it to be same spring tension and height as front.

Thanks for the changes @Didumos69, I am happy to have helped the project!

@Jeroen Ottens, I did what you suggested for the rear axles. I also found a way to align the front axles with the new height of the rear axle: By using the 5L suspension arm I could move the springs one stud outward. The construction uses a pin with axle hole which is inserted somewhat illegal, but for me it would be okay (just don't tell @Erik Leppen ). Actually, the front now sits slightly deeper than the rear, which gives a very slight rake angle. I also tried inclining the front spring more, but then the ground clearance in the front would be less than a stud.

@Aventador2004, I think it was a good thing to start with the same spring position in the back. I think a little more tension in the back won't hurt, but eventually the total weight will help us with final decisions about the exact shock positioning. For now I think I will adopt the new spring setup, because I think it's better. Anyone having objections?

EDIT: I updated the LXF-file.

Compare (red = old, yellow = new):

Edited April 13, 20186 yr by Didumos69

I like where this is going so far. Seems to become a really collaborative effort, which is cool and unique.

One suggestion: I think you really don't need 8 hard springs (red or yellow). A soft spring (dark-gray) accounts for about 600 grams, but the leverage effect of the linkage used means you probably get about 300-400 grams of support per spring (yellow layout), so 8 springs can support about 3 kg. I don't expect this to be come a 3 kg model, so soft springs (dark-gray) would be more than enough.

I know it could just be color coding for easier communication, but I wanted to note this anyway :)

Edited April 13, 20186 yr by Erik Leppen

1 hour ago, Erik Leppen said:

I like where this is going so far. Seems to become a really collaborative effort, which is cool and unique.

One suggestion: I think you really don't need 8 hard springs (red or yellow). A soft spring (dark-gray) accounts for about 600 grams, but the leverage effect of the linkage used means you probably get about 300-400 grams of support per spring (yellow layout), so 8 springs can support about 3 kg. I don't expect this to be come a 3 kg model, so soft springs (dark-gray) would be more than enough.

I know it could just be color coding for easier communication, but I wanted to note this anyway :)

You are right. I think the original axle designers @KikoTube and @Aventador2004 had soft spings in mind. It was me who painted them red (I own 8 red soft shocks) and later yellow to show the difference. About the exact color, bricklink shows the majority of (more recent) soft springs is LBG rather than dark-gray. I painted them LBG again in the LXF-file.

13 hours ago, IA creations said:

I don't have it and I can't make it either right now @Didumos69

@IA creations, I started on the LXF for your engine. I know you don't have time right now, but when you continue working on it, I have one suggestion: It would be nice if the crank-shaft does not carry the weight of the engine-block. To minimize friction, I think it would be better to support the engine block independent of the crank-shaft. EDIT: lik in this example:

Or this one from Crowkillers:

Edited April 13, 20186 yr by Didumos69