Tachometer Users, please check these speeds

[Allargando DiFortissimo]

Howdy,
Lurked for quite a while, now for my 1st post.

If you have a genuine Smart tachometer (pod) installed, how about take a piece of paper with you sometime and answer these questions for me.

When driving in 5th gear,

mph @ 2,000 rpm?
mph @ 3,000 rpm?
mph @ 4,000 rpm?

Also, the exact revs (as close as you can tell) in 5th gear when the speedo reads 60mph.

Bear in mind, I don't want theoretical numbers (I've already figured those). I'm interested in what Smart's speedo says against Smart's tachometer.

Thanks, going out to drive now.

jrc in SC

[Padawan]

I don't have the pods yet (still deciding whether or not I like the look), but I can tell you that the speedometer is roughly 2 mph optimistic (e.g., when displaying 60 mph, you're actually travelling 58 mph).

[gbryers]

Originally Posted by Padawan

I don't have the pods yet (still deciding whether or not I like the look), but I can tell you that the speedometer is roughly 2 mph optimistic (e.g., when displaying 60 mph, you're actually travelling 58 mph).

I noticed that, too - the curious thing is that the Scangauge reports the "correct" MPH, when compared with the GPS, so the computer knows how fast the car is going, it just doesn't report is quite accurately..

[chieftmc]

Use the "search" function

This very thing has been done more than once

[Allargando DiFortissimo]

Use the "search" function

I did use the search function ...for three months now.

Your reply was most helpful.

[Old smart]

We know that the forum's search function is not very effective - a lot of the problem a result of cheeky, nebulous, non-specific thread titles. If someone has the information or if they know where it is, why not just provide it? Otherwise, if I have the opportunity tomorrow, I will try to come up with the numbers.

[Allargando DiFortissimo]

...if I have the opportunity tomorrow, I will try to come up with the numbers.

I tip my hat to you!

While searching, I found one thread that I'm sure was "close," (he extrapolated using known values for gearing and tire diameter), but I would just like to know what the gauges actually say.

Thanks,
ADiF

[John_H]

How about
RPM's vs. Speed

I do almost all my searches by entering a search similar to askjldglkfgskfd then when nothing is found (unless I stumble on this post miraculously) I enter my search terms, select www.smartcarofamerica.com rather than Web and hit the Google Search button. Tah Dah!

Check reply #16

[NCC1701]

Originally Posted by gbryers

I noticed that, too - the curious thing is that the Scangauge reports the "correct" MPH, when compared with the GPS, so the computer knows how fast the car is going, it just doesn't report is quite accurately..

I noticed today that GPS and SGII aren't always in absolute agreement. More often than not they are though, and when they disagreed it was only by 1 mph. Since they both display whole numbers, they might disagree by a half mph and show different numbers ... right? Pretty remarkable that they agree so closely. Someone earlier mentioned that since speedometers don't have absolute accuracy, manufacturers err on the high side intentionally. Makes sense to me. Better than to indicate you're going slower than you actually are.

[chieftmc]

Yea,

My SG and GPS are spot on with each other