How Much Force Breaks The Fanatec QR2 Lite?

Can the QR2 Lite really take 15 Nm of force safely on the Fanatec DD Extreme?

I set out to destroy a QR2 Lite and in the process try to better understand just how strong (or weak) they are.

My conclusion:

As a benchmark, the QR1 did better than I expected, but as we all know, its true weaknesses are mainly in the gradual wearing down of the plastic spline/keyway over usage and time.

The QR2 did much better than I expected, the amount of force going through that torque wrench was really high. Even though it split/cracked just before the flange gave way, it didn't explode and stayed on tight. It's a much, much stronger QR than the QR1 was. Time will tell if it also suffers from wear and tear and loosens or starts to have play/rattle as a result, but everything I've seen points to a fundamentally better design which has been built much stronger, too.

I may return and do this again with all 6 bolts fastened, but to be honest it withstood such high force I don't really think it's necessary, it kinda overperformed despite being dealt a bad hand.

Just disappointed nothing exploded spectacularly. I wore safety specs, for crying out loud.

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0:00 Intro Waffle
1:44 Test Flaws
4:08 QR1 Lite
8:08 QR2 Lite
16:02 Outro Waffle

#iracing #simracing #fanatec #assettocorsa #assettocorsacompetizione #simracingsetup #simrig

[chrisc]

This is interesting because it shows that testing these for failure is no trivial task and being able to determine how, when and why these fail requires very specific and repetitive tasks. The fact that so many QR1's failed and took out bases and wheels with them and you couldn't get one to break shows that there is something happening while using it in real-life conditions that differs drastically from a simple pressure test. Cool though! Thanks for sacrificing a QR1!

[bertram-raven]

For a "non-engineer" you have a very good understanding of destructive testing methods and the differences between static-bench and real-world considerations. Well done, Sir!

[slaphead]

I salute you - you've given us the destructive testing we never thought we wanted, but we need. Nice one.

[hellomenopee]

Ron did a detailed tear down of the Extreme wheel and the QR2 Lite to show what Fanatec thinks safe implementation of QR2 Lite for 15nm. It's fairly interesting and seems to make sense. But breaking stuff is fun too! You could maybe machine an inset like the Extreme has and break stuff again! BTW. you see failure for the first time at 10:35. Far left side. You see the crack next to QR2 Wheel Side. And if it had 6 bolts and and inset. It would likely have failed from that first wee crack. And i commented while watching lol. You covered it.

[chengraphael]

This is what we need! Please also do the test on QR1 VS QR2
Moza as well!!

[deandaniels]

10:46 it breaks under the locking ring first

[SimDemon]

Great video Danny, good example of the sort of loads the QR lites can take!

[alphastratus]

A disconnect and reconnect after each step would be helpful. By using the mechanism it would show smaller damages than total failure.

[jamiescott]

But how many Nm can a frozen pizza take?

[TheGabberworld]

at 10.46 when QR2 break down, after that it could start brake the pins, also that huge movement could break pins down much sooner

[LegisArtis]

I´ve been waiting for a post like this for a while. if the other streamers dont want to do it, you are the lucky one. thank you

[liamsenn]

thank you for putting your money on the line, great video, you got my subscription

[theviperman]

What you're essentially testing is static strength of the interface which is a single force application. The other test is a fatigue test which is repetitive load application .. A given part can fail at a lower applied load that is repeated on and off several times .. aka fatigue failure

[alecmillea]

Thank you for providing us with this service to the Sun racing community

[quazster]

You can remove the torque limitation by cutting the plastic "pin" protruding at the back of the QR2 wheel side so it does not engage the microswitch inside the wheel. As it is just a dumb plastic part that is the only way the wheel knows that it should set everything to limited mode. I have DD2 and typically run 10-13Nm max with my wheels and with the lite no issues whatsoever.

[driflysh]

Please note, that you must use these torque wrenches in a certain way (see respective manual)! You must grab exactly on the handle and only on the handle. Otherwise, the applied torque differs from what you adjusted to. Many people think, torque is torque and that's true for some wrenches (clicking mechanism coaxial to the nut) but the wrenches that you use (clicking mechanism ~30 mm from the nut) rely on that certain ratio of handle to nut and handle to clicking mechanism. Anyway, interesting test! Thanks.

[robn]

Nice one Danny, i also had the same thought when seeing the clubsport DD+ extreme wheel with a QR2 lite on it. The only reason I can think is fanatec limit the lite on other wheel i.e the CSL wheels ( expect the McLaren gt3) is that the wheel itself wouldn't hold up to the forces of bigger wheel bases.

[davidzx]

Very interesting video. Good job! I am not an engineer (and native speaker), but my remark would be that except from rotation force in this method you also have applied strong pulling force in one direction.

[ezlook]

I salute your sacrifice of money for science!

[killrockstartv]

Honestly I thought these where strong, Iv'e had mine a couple of weeks now and was super impressed by how good they are vs the qr1. A lot of people of reddit etc are worried about buying this over the normal qr2 and Iv'e been trying to reasure people that these are way over engineered for 8nm bases.