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Old 06-10-2021, 12:08 PM   #57 (permalink)
Vekke
Mechanical engineer
 
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Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 1,272

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)

A2 1.4 LPG - '02 Audi A2 1.4 (75hp)
90 day: 24.67 mpg (US)
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You just dont understand all things, thats fine by me. There is not 16% variation in the results used for the results. Its not flat road so A and B direction results cannot be the same if start point of the other direction is not at the same level. Thats just physics. I did 3 runs to see if the temperature trend is constant for each 0,5 celsius change and its seems to be stable. Only thing making the last measurements double the effect was more tarmac came to sunligth. That is good information for future test I will do so I can take that into account better when interpreting future results.

Windows up vs windows down test does not lower my cars energy consumption at all. I really don`t see any benefits doing that long testing. My results is that 3,9% I havent found any reliable data that proves the result should be 6% like you claim. You havent showed your raw measurement data so why bother. I did not find any other data either that would prove that claim. I publish the hard measurements so someone with more time can play with the numbers more.

For other mods testing if I am able to see the results with shorter driving that is enough for me. If I would have straighter and more level roads close to me I would ofcourse use them. 2 days ago I drove 50km for "flat" 2km long test straigth. did few test runs 80,100,120km/h speeds to both directions. Just one of each speed. 2 of the results were screwed by other cars.

On this place where I test its only 10 km away from home. 1.5 hours of testing time today I saw 3 cars and had 0 faults in the tests. One result, I missed due to one of the cars passing by.

0,1kWh change in the energy consumption is 0,6% difference in consumption. Thats the resolution of my results at the moment. I haven`t released any other results, because some people seem to know better how to make tests and I don`t have time to argue as that does not get me closer to my goals for the project...

For me its enough when all ready mods are fastened I will do a test full to empty and let the results do the talking. Anything else is just meaningless talk. Getting to lower consumption figures is not a matter of belief only the results matter. Better is better.

On the way to wheel aligment 54km avg consumption to A and B direction at 100km/h speed was 15,5 kWh. Then I only had 30mm lowering and 3.5 bar tire pressures on. Temperature was +24 celsius.
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