[REVIEW] 42056 - Porsche 911 GT3 RS

[Jim]

1 question for the reviewers.

Do the new front hubs have slots to connect driveshafts? None of the photos so far make it clear. Would be a pityif they didn´t.

I am not totally sure what you mean? Care to elaborate? The front hubs don't connect to the driveshaft themselves.... so?

This is the most excellent LEGO Technic set that have ever released! I am actually very tempted (for once), getting myself immense into this particular awesome set. Could this be my first LEGO Technic set?

Jim, outstanding work! You are indeed our EB Resident Technic Expert Reviewer!

I enjoyed the read and video (in particular was helpful to understand the physical mechanics).

You are probably the most enthusiast member of this forum

Thanks for the compliment! Means a lot coming from you!

Excellent review Jim! Thank you so so much for the effort. One small question, could you post a size comparison pic with 42000, as you did with 42039? I have both of those, and 42000 is a good bit longer, might even be longer then the porsche.

Thanks. After Max Verstappen won the F1, I immediately started building my 42000. I didn't finish however. So at the moment I can't post a comparison picture, sorry.

[zux]

Excellent review Jim. There was so much said in this topic already nothing really much to add. However I'd like to notice, while all the functions (or lack of them) received a good portion of criticism I find the lack of proper suspension setup and not highlighting the lack of a it a bit disappointing.

Also, TLG missed a good opportunity to re-introduce 9L liftarm in Orange. Good thing 11L is back.

[Appie]

Wow that was one awesome read, Jim. Thanks. Shame the model couldn't live up to the same standard as your review.

The lack of functions is one thing, but the one function it does have, does not work better than what MOCers have been using for 3+ years? (the 2L smooth axle joiner for a sequential gearbox) Why did Lego even bother to make a new driving ring part if it doesn't work any better than an old solution? Going by Jim's video, I am amazed how many times he's managed to lock up that gearbox in 45 seconds. I don't remember my copy of Sheepo's Mustang locking up that much and it uses the old method of the 2L smooth axle joiner. What went wrong there Lego? Is this a poorly tested part like the revamped worm gear? Or is this just an inherent flaw of sequential gearbox, which I think it surely is (Lego parts will always have slack), but I do expect it to lock up less than what I have been shown here. Sheepo's Mustang worked 90% of the time, so I was expecting 95% with a custom new piece from Lego themselves. Guess I expected too much.

Besides Efferman's suggestion to fix the real wheel steering, the second thing I'd do btw is removing the ridiculous 4R in that gearbox. Then again, looking at the entire thing, you're probably better off modding nothing and just remove the body with that mod from Hispabricks and just design a whole new chassis.

Thanks. After Max Verstappen won the F1, I immediately started building my 42000. I didn't finish however. So at the moment I can't post a comparison picture, sorry.

Just finish the 42000 half with a broken front wheel and nose, that's Max' car in Monaco

Too soon? I feel sorry for the guy really, he was passing guys left and right, but Monaco is Monaco.

Edited June 1, 2016 by Appie

[Erik Leppen]

The cause of the lockup is not the new axle joiner. It's the misalignment of the 2L beams linked to the changeover catches. Some system should have been in place to make them "click" to 90 degree angle multiples. So I think the real problem is in the unit behind the steering wheel; that part does the alignment of the axle that controls the shifters.

[Appie]

Ah yes, that makes sense. And explains why it did work in the Mustang, since it's locked in place for its 6 positions, which reduces the problem of it not working only to there being slack in Lego, which can't be avoided.

[technic_addict]

Did Sariel also have a motor running from the back of the engine? I think he had it hooked up at the same axle that the wheels were connected to.

Not sure it should make a difference, but yes, they had the motors mounted in different positions.

They also used different motors. Jim used a L and Sariel a XL

[Withacee]

Cheers very much for putting up the review; always a good read.

I must admit, I'm no fan of this set. It looks wonky and unfinished, and the design looks like it's designed to be complex for the sheer sake of complexity. Form over substance, that's what it feels like to me.

I like Technic models, but this one I shall pass on.

[Meatman]

Not sure it should make a difference, but yes, they had the motors mounted in different positions.

They also used different motors. Jim used a L and Sariel a XL

It would make a huge difference where the motor was mounted. One motor is before that clutch gear and the other would be after it. The clutch gear prevents the gearbox from locking up.

Edited June 1, 2016 by Meatman

[technic_addict]

It would make a huge difference where the motor was mounted.

I had assumed the problem was with the shifting mechanism which doesn't seem to lock the knob gears in there proper position.

[Meatman]

I had assumed the problem was with the shifting mechanism which doesn't seem to lock the knob gears in there proper position.

I am talking about it locking up. It shouldn't lock up if the motor was mounted at the wheels because the clutch will just spin. At least I don't think it should.

Edited June 1, 2016 by Meatman

[technic_addict]

I am talking about it locking up. It shouldn't lock up if the motor was mounted at the wheels because the clutch will just spin. At least I don't think it should.

My understanding was it was hooked up to the fake engine which is connected to the transmission / gearbox which is then connected to the wheels. If the gearbox jams, the wheels don't spin.

I may be wrong, but I think the problem lies with the knob gears not being 90 DEG, which another poster had also mentioned.

[Meatman]

Is it possible that Lego purposely covered up the entire engine so no one can see that it isn't moving?

My understanding was it was hooked up to the fake engine which is connected to the transmission / gearbox which is then connected to the wheels. If the gearbox jams, the wheels don't spin.

I may be wrong, but I think the problem lies with the knob gears not being 90 DEG, which another poster had also mentioned.

Yes, it is jamming because the white clutch gear is on the other side of those gears. The clutch gear is what prevents it from jamming. Running the motor from the opposite way then shows the gearbox slipping because of friction. That is what I am seeing in the videos.

Edited June 1, 2016 by Meatman

[Nmapladem]

For the chassi motorized with one Xl after Fix Gear Last week-end

My video : https://www.youtube.com/watch?v=wVTywe5PdvI.

[Didumos69]

I posted this in the Sariel video thread, but I thought it would be valid to post this here too.

In Sariel's video the gearbox is clearly suffering from resonance when driven by a motor. You can read this from the rotation speed of several gears which goes up and down with a more or less constant interval.

This is not strange given the number of gears involved, but as far as I can judge there is a more important cause to this effect.

In real gearboxes most gears have a prime number of teeth, or at least the numbers of teeth of two engaged gears are mutually prime. This takes away most of the resonance risk. It's also why most real gear ratios cannot be expressed in terms of whole numbers only. LEGO gears all have multitudes of 4 teeth, so two engaged gears are never mutually prime. Together with the large amounts of slack and friction - compared to real gearboxes - resonance is far more likely to occur.

Maybe we are setting the bar too high when we expect these kind of excessive gear sequences to behave well when being motorized.

Edited June 1, 2016 by Didumos69

[Meatman]

Maybe we are setting the bar to high when we expect these kind of excessive gear sequences to behave well when being motorized.

Other reviewers are saying it slips and makes noise when it is pushed along.

Maybe this is being nitpicky, but why are the actual shifter positions opposite of those from the real car? And by this I mean R-N-D. This doesn't seem like it should have been very difficult to do.

http://www.automobilemag.com/news/2016-porsche-911-gt3-rs-review/#2016-porsche-911-gt3-rs-shifter-01

[brunojj1]

Other reviewers are saying it slips and makes noise when it is pushed along.

Maybe this is being nitpicky, but why are the actual shifter positions opposite of those from the real car? And by this I mean R-N-D. This doesn't seem like it should have been very difficult to do.

http://www.automobilemag.com/news/2016-porsche-911-gt3-rs-review/#2016-porsche-911-gt3-rs-shifter-01

It's easy to "fix" - just turn it upside down...

Didn't they even have the time to sit in the real one or what?? Being shocked the xx time today!

[Meatman]

It's easy to "fix" - just turn it upside down...

Didn't they even have the time to sit in the real one or what?? Being shocked the xx time today!

I was just comparing the interior of the real car to the Lego one and noticed the shift positioning was the exact opposite.

Edited June 1, 2016 by Meatman

[Seasider]

So Jim what does the code unlock on the website ?

IMO It would be rude if anyone else has already used it!

Edited June 1, 2016 by Seasider

[Jim]

So Jim what does the code unlock ?

I don't know. Haven't seen the site/page to enter the code. Have you?

[Seasider]

http://www.lego.com/en-gb/technic/codebreaker

Only has 2 uses per code according to the website

Edited June 1, 2016 by Seasider

[Paul Boratko]

Other reviewers are saying it slips and makes noise when it is pushed along.

Maybe this is being nitpicky, but why are the actual shifter positions opposite of those from the real car? And by this I mean R-N-D. This doesn't seem like it should have been very difficult to do.

http://www.automobil...3-rs-shifter-01

That portion of the authentication research must have been used to ensure the shock absorbers were the correct color..

[Ngoc Nguyen]

That portion of the authentication research must have been used to ensure the shock absorbers were the correct color..

That sarcasm is cracking me up

[Jeroen Ottens]

Thanks for the review Jim, even higher level than your usual superb level...

A small question on the doorhinges. Are these just a standard single pivot point, or is this done through a linkage system?

[Jim]

Thanks for the review Jim, even higher level than your usual superb level...

A small question on the doorhinges. Are these just a standard single pivot point, or is this done through a linkage system?

Thanks Jeroen! Actually it hinges on two pivots (more or less). It hinges on the end, and it has an additional connection/hinge to the chassis at the middle of the door. I am not in the opportunity to take picture right now.

[Didumos69]

This BrickNerd guy hears the gearbox stuttering, acts a bit strange and skips quickly to his next sentence. He ends up giving it a 5 out of 5 overall. You can hear the stuttering from timestamp 4:09 and from timestamp 4:35.

Edited June 1, 2016 by Didumos69