Car performance measuring devices

[Ramee]

This is not directly relevant to Tiguans, but I know some members are using these performance monitoring boxes..

Can someone comment on accuracy and recommend relatively low cost device to measure acceleration of cars.

I am looking at Vbox(expensive) and Gtech pro.. Can some one comment on those.. Thanks

[nat225]

1/4 mile strip would be cheaper, accurate and legal

Or dyno runs if u prefer raw data.

[team_v]

I believe the Polar FIS allows 0-100 and a range of other options integrated into the MFD.

[nat225]

the cheapest would be a Torque Pro App (on an android phone, us$5) and a bluetooth dongle (around us$15 eBay delivered). the accuracy is probably not the best though..

[team_v]

the cheapest would be a Torque Pro App (on an android phone, us$5) and a bluetooth dongle (around us$15 eBay delivered). the accuracy is probably not the best though..

That is the biggest issue i believe.
You have to get a strong GPS signal with a quick refresh rate (I have heard 5Hz bantered around) in order to get an accurate reading.
I don't know if the gps antenna with the RNS510 is even that good.

[Ramee]

That is the biggest issue i believe.
You have to get a strong GPS signal with a quick refresh rate (I have heard 5Hz bantered around) in order to get an accurate reading.
I don't know if the gps antenna with the RNS510 is even that good.

Yes ... I used that setup ( Torque pro/ dongle) and it sometimes give very confusing results.. Torque pro uses OBD2 signals from car ecu for 0 ~ 100 timing I believe but not sure...Also it does not give any result for some runs.

Gtech pro is relatively cheap not sure about the accuracy though..

[Ramee]

I found this comparison YouTube link...
Car performance measurements using different devices & applications - comparison test - YouTube

[jamesatfish]

I've found the RaceLogic Performance Box / Video Box / VBox products to be suitably accurate tools, though they're not cheap ($500+).

I use mine primarily for racetrack lap times where the GPS lap time is usually within 1/10th of the Natsoft recorded, transponder-based time. Not F1 accuracy but more than sufficient for my needs.

For straight line acceleration runs I've found them to be pretty accurate also - again within a few tenths of the laser recorded times over various 800m and 1000m standing sprint events.

The older Performance Box I've got is a 10Hz unit - i.e. it gets an updated GPS fix every 1/10th of a second, and uses fancy maths to calculate splits between those fixes. Their newer models now support 20Hz (i.e. 1/20th of a second) updates.

[tigger73]

I've found the RaceLogic Performance Box / Video Box / VBox products to be suitably accurate tools, though they're not cheap ($500+).

I use mine primarily for racetrack lap times where the GPS lap time is usually within 1/10th of the Natsoft recorded, transponder-based time. Not F1 accuracy but more than sufficient for my needs.

For straight line acceleration runs I've found them to be pretty accurate also - again within a few tenths of the laser recorded times over various 800m and 1000m standing sprint events.

The older Performance Box I've got is a 10Hz unit - i.e. it gets an updated GPS fix every 1/10th of a second, and uses fancy maths to calculate splits between those fixes. Their newer models now support 20Hz (i.e. 1/20th of a second) updates.

James,

How do you find these compare to the AutoPolar? Have you run any comparisons using the AutoPolar FIS+ for 0-100?

Be interested in any "real world" results.

I've found my 0-100 times are quite repeatable using the Autopolar but not sure how accurate they are.

[jamesatfish]

James,

How do you find these compare to the AutoPolar? Have you run any comparisons using the AutoPolar FIS+ for 0-100?

Be interested in any "real world" results.

I've found my 0-100 times are quite repeatable using the Autopolar but not sure how accurate they are.

I actually haven't thought to compare the AutoPolar and the Performance Box - will grab the PB out of the Polo sometime this week and give it a try.

[Ramee]

Is there any one with Gtech pro fanatic devices. They claim to have 10 Hz GPS update rate, and available in Australia about 250 AUD.

GTECH PRO FANATIC SS & RR - Gtech Pro Fanatic

[Ramee]

Also sparkfun and others now have these 20Hz GPS modules..

https://www.sparkfun.com/products/10920

If we can get those 20Hz data logged and analyse then we will have Aussie made opensource performance meter under 200 AUD.. I can do the hardware part any one interested on developing
software part