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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 04-19-2021, 06:43 PM   #71
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Sounds like a DIY for one of you CANBUS gurus.
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FWIW, I've already started thinking that I can just read the speed from the CAN bus (like I already do for another DIY device)
and show it on a large 3-digit 7-segment LED display above the gauge cluster.

This will also provide a better viewing angle!
Heck, it might even be bright enough to reflect in the windshield and then I can put it pretty high in my field of view, like the HUD in Corvettes.

Let's see if I find time to try this


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It is probably broadcasting all the time, the speedo just only listens for it so often.
Yes, and even on multiple PIDs
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Old 04-19-2021, 06:50 PM   #72
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These car manufacturers clearly don't know how to make digital speedometers.
You should never buy cars from them!
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Old 04-19-2021, 06:51 PM   #73
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Yes, and even on multiple PIDs
I didn't think about that but would make sense. Must be broadcasting on different PIDs for speedo, TCS, and power steering control module.
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Old 04-19-2021, 06:53 PM   #74
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These car manufacturers clearly don't know how to make digital speedometers.
You should never buy cars from them!
That is what I personally don't care for. It is scrolling so quick you can't really read it practically. It is enjoyable visually on an acceleration run, but that would be about it to me.
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Old 04-19-2021, 08:22 PM   #75
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These car manufacturers clearly don't know how to make digital speedometers.
You should never buy cars from them!
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That is what I personally don't care for. It is scrolling so quick you can't really read it practically. It is enjoyable visually on an acceleration run, but that would be about it to me.

Actually, at least on the Ferrari, it is skipping numbers or its changing so fast there are numbers missed by frames of the video (which actually would be possible depending on the frame rate). I didn't take the time to look at the others. Pause the video and use the comma and period to go through it one frame at a time. It is skipping numbers quite a bit and you can see one fade into the next. There are also frames with no change.

If the 86 accelerated at the same speed as these cars it would look like that as well I suspect.
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Old 04-19-2021, 09:57 PM   #76
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Actually, at least on the Ferrari, it is skipping numbers or its changing so fast there are numbers missed by frames of the video (which actually would be possible depending on the frame rate). I didn't take the time to look at the others. Pause the video and use the comma and period to go through it one frame at a time. It is skipping numbers quite a bit and you can see one fade into the next. There are also frames with no change.

If the 86 accelerated at the same speed as these cars it would look like that as well I suspect.
Yes, I noticed that too, but still it was a lot more responsive.
Again, I never specifically said it should show every single number; I complained that the current refresh rate is too low.

Now that you mentioned it, I decided to do some "scientific" counting!


(30 fps)

Between the first frame that shows 0:03 to the first frame that shows 0:04, the number on the display changes 10 times.
So ~10 Hz, as I was suggesting as a good compromise for a while

---

For comparison, here's a GT86 video:


(it's 60 fps, so double the button pressing to view one second)

Between 0:41 and 0:43 (two seconds), the number changes 7 times. So ~3.5 Hz.
Ok, my "~2 Hz" estimation was a little wrong.

Looks like instead of ~5x'ing the refresh rate we only need to ~3x the refresh rate.
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Old 04-19-2021, 11:32 PM   #77
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don't forget, they could also be doing some software smoothing, where the dash really only gets an update every 2hz, but displays incremental numbers between updates...
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Old 04-20-2021, 07:30 AM   #78
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For comparison, here's a GT86 video:
But, aren't you assuming the two cars are accelerating at the same pace? In any given second the Ferrari is going to go through more MPH changes then the FRS during hard acceleration.
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Old 04-20-2021, 12:44 PM   #79
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Honestly, only used the digital speedo on my gen 1 and it was completely fine. The examples shown with each digit displayed are not preferable for me - too fast and not helpful.
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Old 04-20-2021, 02:58 PM   #80
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But, aren't you assuming the two cars are accelerating at the same pace? In any given second the Ferrari is going to go through more MPH changes then the FRS during hard acceleration.
The number on the GT86 speedo in the 0:41–0:43 part of the video increases by in +3 km/h increments (on average; there's one example of a +2, and one of +4), so clearly the rate of acceleration is not the limiting factor here.
At the same refresh rate the Ferrari would just be accelerating +5...+6 km/h per update.
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Old 04-20-2021, 06:19 PM   #81
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The number on the GT86 speedo in the 0:41–0:43 part of the video increases by in +3 km/h increments (on average; there's one example of a +2, and one of +4), so clearly the rate of acceleration is not the limiting factor here.

At the same refresh rate the Ferrari would just be accelerating +5...+6 km/h per update.
Yeah but are you accounting for the acceleration's effect on the electrons? It's the same effect as gravity...

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Old 04-20-2021, 06:33 PM   #82
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I can't wait until we can actually see this car in person and test drive it so we can stop talking about the speedometer and move on to important subjects like whether or not you can see the brake pads, or possibly whether or not we should buy the automatic or manual transmission.

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Old 04-20-2021, 06:57 PM   #83
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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.

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Old 04-20-2021, 08:34 PM   #84
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In a fast car, you want to see the numbers going fast because it highlights how quickly the car is building speed. If you were to do it both ways and market research it, I assume the fast numbers would be better received.

Additionally, on a track, you would want numbers to updated quickly so you can glance down at any time to know your precise speed. For normal drivers, they probably want less numbers flashing at them, especially after a work day.

For me, on the street, I feel like with 16 years of driving experience, I can accurately guess within ~5 mph of how fast I am going on a given street. So I only need to glance down to confirm the speed. I'm not watching the speedo or really even the tach; I rely on noise to tell me when to shift.

Also also also... The speedos we are watching have been recorded on camera running at a FPS @ 24/ 30/ 60 with who knows what shutter speeds and so>edited and rendered out that can affect how it looks>uploaded and converted to YouTube media file that further changes thing>then displayed on computer monitor.
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