42224 Porsche 911 GT3 R REXY AO Racing Race Car

[Krxlion]

Are you guys sure that this is "bright green" and not actual "green"? If this were a normal one (like a lot of John Deere sets), I would have a decent green part pack to start building differently than gray/black.

[Auroralampinen]

8 minutes ago, Krxlion said:

Are you guys sure that this is "bright green" and not actual "green"? If this were a normal one (like a lot of John Deere sets), I would have a decent green part pack to start building differently than gray/black.

Yes, this is bright green you can see the  color difference john deere is much darker:). 

[Auroralampinen]

https://aoracing.com/lego-technic-debuts-rexy-gt3-rawr/

[Michael217]

Who's waiting in pink?!

[R0Sch]

26 minutes ago, Michael217 said:

Who's waiting in pink?!

Nobody, I hope. I don't want to have to buy this twice like all the other recolored Technic models.
Also, Roxy uses the nr. 80 tag and green instead of red mirrors and spoiler tips. 

[Michael217]

28 minutes ago, R0Sch said:

Roxy использует nr. 80 тег и зеленый вместо красных зеркал и наконечников спойлера.

Not always)

[Silvavasil]

@grohl This is a great job!
Milan, if you see this, we really need a dark pink or magenta Porsche! 

Edited December 3, 2025 by Silvavasil

[mahjqa]

Dark pink or magenta would be a day 1 buy for me.

[anomalocaris92]

Mmm correct firing order of the cylinders... I wonder if Milan used 6 #4368 cranks instead of 3, with each opposing pair of cranks rotated 180° to each other, to achieve true boxer-style synchronized firing. The fact that the pistons aren’t aligned is actually another accuracy bonus for a boxer engine!

Edited December 8, 2025 by anomalocaris92

[damian_kane_iv]

On 12/2/2025 at 4:31 AM, Oh_Hi_Mao said:

Milan is designer of this set.

The scale is 1:12, same as Skyline and Ford GT.

Perhaps 1:10 scale was silently written off by TLG

Reminds me of the phenomenon of shrinkflation. I think the price of this and the original 1:10 racing Porsche 911 are about the same. If they wanted to do a 1:10, it would probably go for $200-$250 here in the US :(

[Zerobricks]

15 hours ago, anomalocaris92 said:

Mmm correct firing order of the cylinders... I wonder if Milan used 6 #4368 cranks instead of 3, with each opposing pair of cranks rotated 180° to each other, to achieve true boxer-style synchronized firing. The fact that the pistons aren’t aligned is actually another accuracy bonus for a boxer engine!

Simply offset one row of cylinders as with the real angine and orient the camshaft pieces in a different orientation.

[anomalocaris92]

2 hours ago, Zerobricks said:

Simply offset one row of cylinders as with the real angine and orient the camshaft pieces in a different orientation.

Yep, that’s what I meant! Sorry if my English isn’t perfect.The orientation of each pair of crankshafts would be exactly 180°, if I’m not mistaken.

Edited December 8, 2025 by anomalocaris92

[Stereo]

5 hours ago, anomalocaris92 said:

Yep, that’s what I meant! Sorry if my English isn’t perfect.The orientation of each pair of crankshafts would be exactly 180°, if I’m not mistaken.

Boxer 6 cylinder is 180, 60, 180, 60, 180 offsets.  So it needs something different.  Either 60/120 degree rotation axle connector, or a different version of the 'cam' piece with the axle lined up differently.  I'm guessing the press writing is just wrong about the model though and it's either the regular 3 180 degree offset pairs of pistons, or maybe 0 90 180 with the new parts.

Edited December 9, 2025 by Stereo

[anomalocaris92]

1 hour ago, Stereo said:

Boxer 6 cylinder is 180, 60, 180, 60, 180 offsets.  So it needs something different.  Either 60/120 degree rotation axle connector, or a different version of the 'cam' piece with the axle lined up differently.  I'm guessing the press writing is just wrong about the model though and it's either the regular 3 180 degree offset pairs of pistons, or maybe 0 90 180 with the new parts.

Yeah, something like a 2 stud long axle connector with axle orientation shifted by 120° at each end would be needed to offset each pair of opposing crankshafts (the cam is another thing). I guess they did something like a crankshaft offset by 180° for each pair of opposing pistons (so 6 crankshafts for 6 pistons instead of the usual 3 for 6), but the offset of the symmetry axis between each pair would be 0 90 180, so basically first and last pair would be the same.

[Stereo]

What I'd design it as is the half-offset piece, but with its axles turned (I guess it's 30 degrees each, one CW one CCW) and shortened to 1L of axle. (just using the 120 degree axle pieces to visualize the angles)

It would also need a conrod piece that's not designed to run in pairs, to keep the 2 studs/piston spacing.  And 1.5 length axles, or a 2L thin beam with one axle hole and one 1L axle.  Might be easier to skip that and bump it up to 2.5 studs per piston.

Edited December 9, 2025 by Stereo

[gyenesvi]

11 hours ago, Stereo said:

Boxer 6 cylinder is 180, 60, 180, 60, 180 offsets.  So it needs something different.  Either 60/120 degree rotation axle connector, or a different version of the 'cam' piece with the axle lined up differently.  I'm guessing the press writing is just wrong about the model though and it's either the regular 3 180 degree offset pairs of pistons, or maybe 0 90 180 with the new parts.

I believe the marketing material said that the firing order is correct, not the timing :) So whether it's at 60 degrees or 90 does not matter for the order, only for the timing, which most could not even differentiate just by looking at it at a decent speed, so no point in optimizing for..

[Stereo]

That's fair, but you can't do that without 6 different angles either - the firing order is at 6 different points in a revolution, having it every 90 would make pairs of cylinders fire together.  I guess you could do 45 instead of 60 which might be easier in some way.  And it is  more viable to build a 2-part crankshaft that's driven from both ends to get the extra angles.  Like add a "camshaft" with 2:1 gearing on both sides and offset it by some teeth.

 

Official order seems to be based on the left bank numbered 1 2 3 from the back of the engine ("front" but it's a rear-engine car), 1 6 2 4 3 5, 120 degrees apart.

Edited December 9, 2025 by Stereo

[gyenesvi]

48 minutes ago, Stereo said:

120 degrees apart

What I don't get is that if they are 120 degrees apart in reality, that also result in 3 pairs firing together, no? So if that's the case, then setting those 3 pairs 90 degrees apart (and then a 180 degree gap) does result in the same pattern/order, no?

[Stereo]

It's because it alternates which side fires.  So the 1st and 6th piston are 60 degrees apart on the crank, meaning it rotates 120 between 1 being top (left) and 6 being top (right).

I guess with 90 degrees you can space them out that way, they'd just be on 6 separate cam pieces so that 1+4 are at TDC at the same time, then 90 degrees later 3+6, then 90 degrees later 2+5, then 90 degrees later nothing.

Though that does have one optimization, 1+4+2+5 would be able to put 2 of them onto the same cam and cut it down to 5, if you don't mind it being 1 stud between 1+2, 2 studs between 2+3 on the same side of the engine (or it's not just using the little new piston piece directly so it can offset them again).

 

Building it with classic crank parts this is the most compact I can find, the 5L thin beam shows where the 90 degree rotation happens.  Rotating clockwise seen from the bottom/facing part of the image.

Using a 3L axle as 2.5, and 2L thin beams as crank parts, are really not things I see Lego doing in a real build, but they do clear.  A dedicated 90 degree change part could reduce the total length 1.5 studs so there'd be a 1 stud gap to the top pair of pistons instead of 2.5.

Edited December 9, 2025 by Stereo

[Lyichir]

My little brother is very excited for this one since he's been a fan of the real-life car since before it had won the IMSA championship. He even said he wished it could be at the even bigger, more premium scale like the biggest supercar sets.

As less of a Technic-head myself I am interested in those headlight pieces...

[gyenesvi]

9 hours ago, Stereo said:

I guess with 90 degrees you can space them out that way, they'd just be on 6 separate cam pieces so that 1+4 are at TDC at the same time, then 90 degrees later 3+6, then 90 degrees later 2+5, then 90 degrees later nothing.

@Stereo the implementation of this with the new cam/piston parts will be fairly trivial and more compact, no? They might need to use 6 separate cam parts and have 1 stud of space between adjacent pistons, but still.

 

[allanp]

6 hours ago, gyenesvi said:

@Stereo the implementation of this with the new cam/piston parts will be fairly trivial and more compact, no? They might need to use 6 separate cam parts and have 1 stud of space between adjacent pistons, but still.

 

I think it would be counterproductive to increase realism with the firing order by using the much less realistic cam pieces instead of a proper crank shaft.

[gyenesvi]

44 minutes ago, allanp said:

I think it would be counterproductive to increase realism with the firing order by using the much less realistic cam pieces instead of a proper crank shaft.

Yeah, but what if the large pistons simply don't fit into this scale. I'd expect they use the new pistons in this model. I don't think they really care about the realism of the crank shaft.

[Zerobricks]

You know you can just check the inventory of this set and see it uses small cylinders and cams...

[gyenesvi]

1 hour ago, Zerobricks said:

You know you can just check the inventory of this set and see it uses small cylinders and cams...

Good point. I didn't even think about looking because I was pretty sure about it, I was kind of surprised when people started hypothesizing about the large ones..