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Old 05-24-2022, 03:40 AM   #1 (permalink)
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Round test routes

I have been testing my cars in front to back test drives on same road so far, but where I currently live in Dusseldorf I found even better test route. Its a straigth loop. Few days back I tested that I am able to drive that loop around going 80km/h which is a good test speed for aero and rolling resistance balance. 22,8km long route is long enough.

https://scontent-dus1-1.xx.fbcdn.net...Qw&oe=62913B53

First I will be testing my a2 tdi. Just need to make custom ecu program to limit correct IQ levels to reach that speed. Route is pretty level but first testing will tell how well that limited injection works or do speeds get too high on the few turns. The one on the right is the tightest and trickiest. Route there has at least 2 lanes to same direction so impact to other cars is minimal, but still will do the testing later so its safer.

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Old 05-24-2022, 01:29 PM   #2 (permalink)
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What do you think you could learn on a 100ft [30.48m] circle? I think of tuft testing on the inner half of the car.
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Old 05-24-2022, 03:07 PM   #3 (permalink)
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Vekke, will you do 2 runs - 1 in each direction?
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Old 05-25-2022, 02:55 AM   #4 (permalink)
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with a circle no need to test to both directions as wind is already compensated by the route. also not possible to the other direction as there is tighter turns.

i will measure only time which is more accurate. there you can calculate avg speeds etc.
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Old 05-25-2022, 04:29 AM   #5 (permalink)
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A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
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Quote:
Originally Posted by freebeard View Post
What do you think you could learn on a 100ft [30.48m] circle? I think of tuft testing on the inner half of the car.
I think 30m too small circle for testing. 100m migth be big enough.
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Old 05-25-2022, 06:09 AM   #6 (permalink)
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Quote:
Originally Posted by Vekke View Post
with a circle no need to test to both directions as wind is already compensated by the route. also not possible to the other direction as there is tighter turns.

i will measure only time which is more accurate. there you can calculate avg speeds etc.
I use Mapy.cz Android app for such measures.
It calculates route, average speed, distance, time and even elevation profile.
(I think it was developed for cycling, but it is pretty useful for cars also.)

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aerodynamic, consumption testing, onroad, round route

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