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Old 03-23-2008, 02:03 PM   This thread is in the EcoModder Project Library | #1 (permalink)
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tigra AERO - '96 opel tigra
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my TIGRA AERO PROJECT

ok boys.

I go to to describe the work on my car.

First, the car is an Opel tigra, year 1996
It is a little coupè, wit only 1604mm of length.

this is a profile of original car



and this below, it is the final solution (without the wheels), but my girlfriends does not want




My mods include:

1) ugly rear underbody extractor
2) fuel tank area covered with polycarbonate ( the exahust line is not covered)
3) front and rear wheel air deflector: the front deflector, deviate the airflow over the horizontal arm
4) grill block: this use three guideline bearing with manual positioning.
5) I do not know what name to give him, I call it: wheel flow stabilizer (WFS).
I is necessary to study it for a good performance.

A lot problem, it come from the rear suspension axle becouse it is exposed to airflow; I have an idea for problem resolution, but any advice is appreciated
Other problem come from the engine undercover not present.

below some pictures:

first three pictures refers at original car (rear car)







now, the pannellings of previus pictures
I have pan all fuel tank area







in this pic, you can look the marked areas covered



Down, the ugly rear extractor





the points of anchor :



from the front:

original











the plastic elements come from this:





in detail:



the FWS

note: final pictures are not available.





In red , the final profile



the idea came from looking the underbody airflow of mercedess SLR
Note the air flow in to the rear wheel, wich cause turbolence (in the slr the flow it is used for brake ventilation)



My friend has an engine undercover Audi, but I discovered it



when this cover is applied to the original bumper, the result like below:







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Last edited by fabrio.; 03-23-2008 at 02:47 PM.. Reason: forghet a picture
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Old 03-23-2008, 02:13 PM   #2 (permalink)
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tigra AERO - '96 opel tigra
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more informations at http://tigrafans.forumcommunity.net/?t=7378938&st=0
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Old 03-23-2008, 02:13 PM   #3 (permalink)
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Looks like you are off to a great start.
Looking forward to your results.

How are you keeping track of your fuel mileage ? Do you have a Scanguage ?
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Old 03-23-2008, 02:20 PM   #4 (permalink)
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this is the biggest problem: i do not have any fuel meters.
Thi is for me an atypical case: I am generally precise and meticulous, and for engine mods Always I use the tools needed , but in this case...
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Old 03-23-2008, 03:16 PM   #5 (permalink)
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the grill block :

I have used, PVC element for the block, and three sliding guide anchored to the front frame.











in the future I will use an electric motor for management grill block opening, or I replacement him with other mechanisme.

an other mod is the replacement of the original windscreen wiper



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Old 03-24-2008, 04:14 AM   #6 (permalink)
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Wow, this is a great thread! Keep up the good work...that's a really nice looking car, too!
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Old 03-24-2008, 09:43 AM   #7 (permalink)
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What is the original Cd of the car?
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Old 03-24-2008, 11:54 AM   #8 (permalink)
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nice car, looks like some good mods
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Old 03-24-2008, 03:30 PM   #9 (permalink)
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tigra AERO - '96 opel tigra
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Coefficient of drag: 0.31
Frontal area: 19.16 sq.ft.

I have a little simulation: max speed Vs Cx (Cd)

[IMG][/IMG]

Two engine: in red the the 1.6liters with 100Hp , and blue, it is the 1,4 liters and 86Hp, both engine, with 16 valves.
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Old 03-25-2008, 12:06 AM   #10 (permalink)
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Very interesting car!

I like the sliding grille block & undertray. Nice work.

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