Will the Digital speedometer have a fast refresh?

[timurrrr]

Originally Posted by Kronk

Actually the first display is jumping on km/h. You can see it at 31:15 of this video

Good catch.

30 fps video, the number changes every 12 frames (400 ms)
=> 2.5 Hz refresh rate.

[timurrrr]

The tachometer seems to be fairly responsive though

[Racecomp Engineering]

Originally Posted by nextcar

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>

You guys had working speedometers?

- Andrew

[mazeroni]

Originally Posted by timurrrr

The tachometer seems to be fairly responsive though

I thought the track graph looked silly in photos, but seeing it in action, it is actually cool.

[timurrrr]

It might be harder than necessary to quickly glance at it.
I wish it had darker bars for x000 rpms, and maybe even x500 rpm's too.

I'm curious to see how it works in practice though.

[timurrrr]

Someone complained to me about this thing, and out of curiosity we ended up pixel peeping at one of my recent track onboards. I always spend a little extra time to make sure my data is frame-precise aligned with the video by aligning the actual steering wheel angle with the steering wheel angle data.

We were able to find an example where the speedometer was 15 mph behind the speed reported on the CAN bus under ~1G braking: