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Old 07-25-2017, 06:42 AM   #381 (permalink)
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At the moment it looks like this summer we will get the car again to standing mile line with 388 hp inside the 1.9 tdi. Here is calculation estimation of the cars setup:




Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com

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Old 08-14-2017, 02:32 PM   #382 (permalink)
bjn
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Quote:
Originally Posted by Vekke View Post
Just for my own reference did some after calculations with the cars specs:
Starting point:
Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com
When car was ready:
Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com

Found also one new cool picture:
Hello Vekke,

I see that you calculated with 6.3 kg/ton rolling resistance. Is that with the Bridgestone B381 Ecopia 145/80R14?

Did you ever confirm the rolling resistance with a "coast down" test, or other type of measurement?
I was looking at the specs for those tires, and they have a C-rating, which means 7,8 < RRC < 9,0. I'm considering buying them for a Renault Clio -97 which currently has 155/80-13-tires. But I'm not sure which figures to trust - 6.3 (A-rating) or C-rating?

I haven't found an A-rated tire which will fit my car so far. I've had the idea of buying the wheels from a Zoe (Michelin Energy E-V 185/65R15) from the junkyard, but calculations show they are a bit too large for my car.
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Old 08-17-2017, 01:37 PM   #383 (permalink)
Mechanical engineer
 
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Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 981

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)
Thanks: 171
Thanked 501 Times in 217 Posts
My tire pressures were 3.5 bar which lowers the rolling resistance also that value is measured with totally worn tires which give better values... i did a coast down tests to figure out the rr and Cd values. (I used the exel which is somewhere here on the forum.
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Old 04-10-2018, 04:54 PM   #384 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 981

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)
Thanks: 171
Thanked 501 Times in 217 Posts
Can you solve this?
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Old 12-02-2019, 12:14 PM   #385 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 981

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)
Thanks: 171
Thanked 501 Times in 217 Posts
Lupo is back to myself and waiting a next engine to be installed to the chassis. What would you like to see me put there? 800cc tdi?
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Old 12-02-2019, 12:17 PM   #386 (permalink)
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An e-Up drivetrain

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audi a2 3l 1.2 tdi, tuneko, vw lupo 3l.

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