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GR86 General Topics (2nd Gen 2022+ Toyota 86) General topics for the GR86 second-gen 86


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Old 05-13-2021, 06:53 PM   #169
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Originally Posted by Tcoat View Post
And could constantly fluctuate in a 10 MPH arch!
Particularly if you did not use graphite lube on the cable and there was any binding... the needle would bounce a good 10-20 MPH

</end old timer reminiscing>
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Old 05-13-2021, 07:14 PM   #170
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Particularly if you did not use graphite lube on the cable and there was any binding... the needle would bounce a good 10-20 MPH

</end old timer reminiscing>
But when they did work rate the refresh rate was perfect!
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Old 05-13-2021, 09:04 PM   #171
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But when they did work rate the refresh rate was perfect!
Oh, that's just quantum physics.
You can't get both the speed and time right at the same time
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Old 05-14-2021, 08:54 AM   #172
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Oh, that's just quantum physics.
You can't get both the speed and time right at the same time
Meh. They managed to get satellites into orbit and people into space an back with nothing much more than analog "computers" and slide rules for a couple of decades. I am sure that the quantum physics involved in your car's MPH is not all that relevant.
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Old 05-14-2021, 12:41 PM   #173
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You really thought I was serious? ��
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Old 05-14-2021, 01:00 PM   #174
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You really thought I was serious? ��
Nope. It would have been a whole different answer if I had!
The unfortunate part is that some would have.
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Old 05-18-2021, 07:38 PM   #175
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Where on earth did you come up with that? You have it backwards.

Australia - The speedo must not indicate a speed less than the vehicle’s true speed or a speed greater than the vehicle’s true speed by an amount more than 10 percent plus 4 km/h.

USA - must be equipped with a speedometer indicating vehicle speed in miles per hour and/or kilometers per hour. The speedometer must be accurate to within plus or minus 8 km/hr (5 mph) at a speed of 80 km/hr (50 mph).

Europe - no speedometer can read slower than the actual speed. Ever. On the high side, it's allowed to read up to 10% above the actual speed plus four or six kilometers per hour, depending on the type of vehicle.

Canada - In Canada, Transport Canada doesn't have any regulations on speedometer accuracy.
LOL WE DON'T CARE!
Sorry, I meant to say it must be over the real speed. Just minced my words.

I think that, surprisingly (to me anyway), its going to be a 4.3 final drive ratio. Personally I think that's a little overboard considering the new power to weight, but I guess they wanted to do as much as they could to make the car feel quick in all of the gears.
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Old 05-18-2021, 07:43 PM   #176
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I wouldn't overthink the regulations concern.
The current gen already very close to the real (GPS) speed, and I can't imagine why the new gen would be much worse.

We're also not talking about a Koenigsegg with bespoke transmission and final drive here.
I don't think they would spend too much time fine-tuning individual gear ratios, etc.
I'm pretty sure if they slap the '13 gears and final drive on the car with the same weight as '13 and 2.4L engine, it would be good enough in their opinion.
So if the 4th gear looks like it matches the '13 FD, then I'm just going to assume the gearing is the same as the '13-'16 gearing — until we have solid data about all the gears.
Well, I do think its going to be 4.3 final drive per the reasons I just said (it looks more like 4.2, and if its out then its probably out in the direction of 4.3).

And yeah correct about the lack of spending money. I had checked the gear ratios for our tranny back to some of the older cars that had it, and yeah if I recall they were almost identical across the years, apart from I think it was 4th or something being a fraction different.

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Old 05-26-2021, 07:17 AM   #177
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Well, I do think its going to be 4.3 final drive per the reasons I just said (it looks more like 4.2, and if its out then its probably out in the direction of 4.3).

And yeah correct about the lack of spending money. I had checked the gear ratios for our tranny back to some of the older cars that had it, and yeah if I recall they were almost identical across the years, apart from I think it was 4th or something being a fraction different.

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Old 06-21-2021, 02:41 AM   #178
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Can't remember if it was the LFA or Ferrari 458 (a few years ago), I remember hearing claims that they had to use a digital tach because the analog couldn't keep up with the RPM.
If you're not free-revving the engine with clutch pressed in, you should be fine.

It was the LFA, the V10 that yamaha helped with couldn't keep up with their standard tachometer, so somewhere in the 8+ year development cycle they revamped the cluster. Which, in hindsight, if you look at toyota's and lexus today, that same technology is used in their current cars with the metal bezel that moves.
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Old 07-09-2021, 08:46 PM   #179
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Here's a video of the digital GR 86 in Grand Tourismo.
As most other games, they've decided to not artificially lower the refresh rate.



Same behavior with the 1st gen in Assetto Corsa.
I drove quite a few laps in it recently and had zero issues with the high refresh rate of the speedo.

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Old 07-10-2021, 09:02 AM   #180
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Originally Posted by ls1ac View Post
I too wonder about the value of a speedo on the track.
I like to glance at my top speed before braking.
I also glance at my minimum speed at corner apex.

Not every turn, sometimes just one or two key turns.
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Old 07-18-2021, 02:43 AM   #181
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Actually the first display is jumping on km/h. You can see it at 31:15 of this video
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Old 07-18-2021, 06:28 PM   #182
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Originally Posted by Transport3r View Post
Probably on purpose, so you can actually read it before it changes. The OBD polling rate and the screen refresh rate are both much higher, so this is done on purpose. Human factors play a big role here.
Absolutely on purpose and for generally sound reasons. As you stated the polling and refresh rates are far from limiting factors.
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