42172 McLaren P1 MODs and Improvements

[astyanax]

1 minute ago, langko said:

Some of those missing pieces will come in the Ducati, but still won’t help with the rear mudguard panel areas. 

Yep, I was wondering as well whether to hold off until the "better" panels were released in red. But that might take another half year before they're actually available individually. And we'd still be missing the inner mudguard sections.

I'm sufficiently satisfied with the workarounds that I felt like building now.  

We'll see later if anyone feels like reverting modifications. 

[LvdH]

I see a lot of things I like. But red is also not my preferred color for this car. Ideally it would be bright light orange. But I’m definitely interested in some of the modifications and applying them to my own set.

[SNIPE]

Ok mr @astyanax

https://bricksafe.com/files/snipe/42172-mods/20241202_230939.mp4

unfortunately it doesn't work very well so im trying a new idea but its nightmarishly hard, I've been at it for 14 hours straight but tomorrow I think I will make a breakthrough.

feel free to improve this if you want.

Ill make the digital model of it soon.

my other idea is to use some sort of piece as a cam that also acts as a lever, the cam function prevents the shock from sagging but still allows it to compress. The cam rides on the bottom of the shock absorber just above the pinhole.

I think the spring will have more clearance when I get the P1 suspension arms

 

Edited December 4, 2024 by SNIPE

[SNIPE]

Cracked it, turns out 2 small linear actuators are strong enough after all!.

Months of work has paid off AND the suspension still works at any rotation of the rocker arm (some technic designs have no suspension when the ride height is at the lowest).

I'M BUZZING.

Now to make 3 more and put them in the chassis, then onto the smaller gearbox (if my parts order arrives in time)

BTW my supercar will use these, so if you don't want AWD and AWS in the P1 just remove the diff and gear rack then lock the wheels so that they don't steer.

The linear actuators stil have space behind them to fit an M motor for some sort of function, the two sides will need to be braced together accross where the differential is. The ride height adjustment motor would be into the end of the actuator maybe with a 12:20 gear pair to increase the torque. It will also be using buwizz 3.0 ludicrous mode which may help the motors not stall, either M or L per front side, but on the same port, then same for rear side but on the next port:
BUWIZZ 3.0 #1{
port A - front left ride height adjustment motor 1 , front right ride height adjustment motor 2
port B - rear left ride height adjustment motor 3 - rear right ride height adjustment motor 4
port C - front steering motor
port D - front steering motor
port E - undecided
port F - undecided
}
BUWIZZ 3.0 #2 {
port G - door left
port H - door right
port I - spoiler
port J - gear shifting
port K - drive motor (CADA buggy motor)
port L - drive motor (CADA buggy motor)
}

Edited December 4, 2024 by SNIPE

[Bartybum]

On 12/2/2024 at 6:56 PM, astyanax said:

But here's a sneak peek of what my Red version will look like. With a wink to my friend Bruno for the headlights and exhaust...

ooooh i'm excited to see how this turns out!

[Aurorasaurus]

4 hours ago, SNIPE said:

port K - drive motor (CADA buggy motor)
port L - drive motor (CADA buggy motor)

How much reduction are you planning to use? Surely it will need to be a lot to get this thing moving with just 2 motors...

This seems promising and I'm excited to see what you come up with.

[SNIPE]

12 minutes ago, Aurorasaurus said:

How much reduction are you planning to use? Surely it will need to be a lot to get this thing moving with just 2 motors...

This seems promising and I'm excited to see what you come up with.

Belive it or not but they don't need much reduction unlike a ride height adjuter that uses worm gears spur gears, knob wheels and more spur gears

Now I;m working on different rocker arms that don't squeeze the axle for the top of the shocks against the beams but also so that they keep the actuators angled towards the shocks as much as possible an not the diff, to save space for the M motor, same goes for how much the actuators extend, as little as possible is better.#

[zonoskar]

Very nice mods people. By the time I get to buy this set, it'll be pimped to mars and back. I'm a little bit disappointed @astyanax didn't design a better suitcase. :)

[StudWorks]

On 12/2/2024 at 2:56 AM, astyanax said:

I'm still building, just finished the gearbox module. But here's a sneak peek of what my Red version will look like. With a wink to my friend Bruno for the headlights and exhaust...

Inventory-wise, it's more of a mod of the Ferrari Daytona SP3... I couldn't be bothered to buy the official set -- I just don't care for that light orange. I do care for glow-in-the-dark headlights!

Draft building instructions are ready. But not yet verified, as I'm still building. Currently debating myself whether or not to release said draft instructions already for feedback?

Finally, somebody fixed the front end! I'm excited to see this on Rebrickable, it'll be a real hit, although I think you should (obviously) make sure that this can all be built in bright light orange too.

[SNIPE]

rear axle , spoiler, exhaust done, to make my rear axle  modular (for now) I had to make the end plate also be modular, but also redesign the exaust , but now it all works fine and my axle can be removed easily

I made a v8 that uses the new engine pieces but with the old cylinders. I just need to find something that can cover the block since the cylinders extend past the block.

ill add images shortly.

Edited December 7, 2024 by SNIPE

[NV Lego technic]

Looking forward to seeing it!

[SNIPE]

The engine idea sucked so ive put that on hold as ive wasted too much time on it and need to build the gearbox however, it seems the 2025 ducatti has conrods that interface the new crank-cams with the older cylinders, abd the 2025 f1 cars have new engine block pieces.

Heres the build so far:

As previously mentioned , the shocks and wishbones are in the mail as well as black 2pin connector blocks and other parts.

I think the axle may need to be lowered by 1L because the wishbones are not as angled down now.

Its a hard balance between:

having suspension travel

but not having the wheels rub against the arches

but also not having too much ride height

but also having as little travel in the linear actuators as possible to maximize space

but also because its better if they bottom out instead of having to add limiters to the rockers (which I did but that was just a consequence of having to mount the bushes this way,

but make the wishbones not rub against the springs , so the shocks must be as close to the vertical beam structure as possible.

but make the actuators not pivot much because the gear rack would then be limited more in how far it can slide but also if the actuators dont pivot there's more space for other stuff to go.

and a load of other stuff...like if the wishbones were angled down too much the steering would be stiff and hardly have much range of motion

So, it was a challange but I think I got it working :)

Edited December 8, 2024 by SNIPE

[Milan]

Offtopic posts have been hidden.
Let's keep the discussion about the McLaren mods.

[2GodBDGlory]

4 hours ago, SNIPE said:

I think the axle may need to be lowered by 1L because the wishbones are not as angled down now.

Its a hard balance between:

having suspension travel

but not having the wheels rub against the arches

but also not having too much ride height

but also having as little travel in the linear actuators as possible to maximize space

but also because its better if they bottom out instead of having to add limiters to the rockers (which I did but that was just a consequence of having to mount the bushes this way,

but make the wishbones not rub against the springs , so the shocks must be as close to the vertical beam structure as possible.

but make the actuators not pivot much because the gear rack would then be limited more in how far it can slide but also if the actuators dont pivot there's more space for other stuff to go.

and a load of other stuff...like if the wishbones were angled down too much the steering would be stiff and hardly have much range of motion

So, it was a challange but I think I got it working :)

Engineering is all about balancing and compromising between large numbers of variables, isn't it!

Good work!

[StudWorks]

Has anyone considered converting the set into a P1 GTR yet?

[jacobcooper488]

@astyanax I just wanted to applaud you for your effort on the front end fixes, I have been watching and waiting from afar. I am curious to see how it will go integrating the mods with the original set. Big hats off to you!

[astyanax]

Alright y'all, I finished my Red version, and I'm very happy with it! Headlights might look a bit "angry" now, but at least not cartoonish.

Among other things, I implemented more engine details, tilted steering wheel, new rearview & side mirrors, contrasting seats, coherent splitter, front extended by 1L, ...

This weekend I should be able to make & share photos (but go back one page to see 2 renders), as well as hit "publish" on the Rebrickable entry with PDF instructions.

For now, all I have to share is the inventory: https://rebrickable.com/users/astyanax/lists/401835/

Big shout-out to @jb70 for the amazing groundwork! Both in terms of smooth functionally and the virtual model...

Edited December 11, 2024 by astyanax
additions

[SNIPE]

7 hours ago, astyanax said:

Alright y'all, I finished my Red version, and I'm very happy with it! Headlights might look a bit "angry" now, but at least not cartoonish.

Among other things, I implemented more engine details, tilted steering wheel, new rearview & side mirrors, contrasting seats, coherent splitter, front extended by 1L, ...

This weekend I should be able to make & share photos (but go back one page to see 2 renders), as well as hit "publish" on the Rebrickable entry with PDF instructions.

For now, all I have to share is the inventory: https://rebrickable.com/users/astyanax/lists/401835/

Big shout-out to @jb70 for the amazing groundwork! Both in terms of smooth functionally and the virtual model...

cool, ill build this because I dont have the real set but have lots of red panels

Unfortuntley everything except for the P1 rims were on pick a brick.

Here is what rebrickable says I'm missing:

However I know for a fact that I have all of these parts too (idk why rebrickable does this)

except for maybe the white pins with diagonal clip and the rims, so for now i'll use the daytona rims.

Edited December 12, 2024 by SNIPE

[mla2]

23 minutes ago, SNIPE said:

Here is what rebrickable says I'm missing:

However I know for a fact that I have all of these parts too (idk why rebrickable does this)

'Build this List' is showing the same to me, very strange.

 

 

[astyanax]

1 hour ago, SNIPE said:

except for maybe the white pins with diagonal clip and the rims, so for now i'll use the daytona rims.

I used the Daytona rims too.  The white pins with clip I found among my daughter's Lego haha, so that's why I even considered them in the first place. But I like them, because the clip profile is very thin, so you barely notice them holding the headlight outline in place. 

[langko]

17 minutes ago, astyanax said:

The white pins with clip I found among my daughter's Lego haha, so that's why I even considered them in the first place. But I like them, because the clip profile is very thin,

Never seen that piece before, great to know! I’m sure it’ll come in handy

[zonoskar]

Weird, I have the same list of missing parts. Could it be different moulds? How do you compare a list to a set? I want to build this in the BLO color of the original set :) Found it. I'll just delete all the red pieces.

 

/edit: Why did @astyanax include piece 6797? That's a 100 euro piece new and 25-30 euro used. Did you have that lying around (from set 8465)? Any alternatives? Also for the red mudguard 67141 there is no BLO alternative, only the 80284, which is 2 studs shorter. How to fill the gaps? Just follow the Lego model?

Edited December 12, 2024 by zonoskar

[astyanax]

On 12/12/2024 at 9:11 AM, zonoskar said:

Why did @astyanax include piece 6797? That's a 100 euro piece new and 25-30 euro used. Did you have that lying around (from set 8465)? Any alternatives?

Yep, had it lying around.  It's used in Bruno's P1 as well, it looks great, and fitted perfectly on the Lego model too.

Look, my model is just a bunch of mods that I liked personally, using parts from my personal inventory.

Feel free to dig around and cherry-pick what you like. In a few days I'll publish both the PDF and the virtual model (LDraw).

On 12/12/2024 at 9:11 AM, zonoskar said:

Also for the red mudguard 67141 there is no BLO alternative, only the 80284, which is 2 studs shorter. How to fill the gaps? Just follow the Lego model?

That's just my replacement for mudguard 4427, which isn't available in Red. When building in BLO, you can build the rear cover as per the instructions of set 42172.

[JesseNight]

On 12/12/2024 at 9:11 AM, zonoskar said:

Why did @astyanax include piece 6797? That's a 100 euro piece new and 25-30 euro used. Did you have that lying around (from set 8465)? Any alternatives?

I see them starting around 30 Eur new and 14 Eur used on BL so it's not so bad.
You could try to find your own workaround or just go with the original exhaust.

Edited December 13, 2024 by JesseNight

[astyanax]

Okay people, here you go: https://rebrickable.com/mocs/MOC-202865/astyanax/extra-pimped-mclaren-p1

Up for download are my PDF instructions as well as the virtual model (LDraw).

More photos of my build here: https://bricksafe.com/pages/astyanax/42172_rb

Here's a closer look at my headlight solution: