roof on or off?

Anything to do with the MX5 and Motor Sport

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roof on or off?

Poll ended at Mon Oct 30, 2006 7:51 pm

roof on
6
100%
roof off
0
No votes
 
Total votes: 6

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zoomzoom
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roof on or off?

Postby zoomzoom » Fri Oct 27, 2006 7:51 pm

you can probably guess the topic from the title. The question: do 5's go quicker with the hardtop on or off?

Obviously the top wieghs a bit, but without it the car is less aerodynamic.

any opinions welcome im sure everyone will have thier own

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Boags
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Postby Boags » Fri Oct 27, 2006 7:56 pm

Faster? Roof on. There is no way the extra weight will outweigh (forgive the pun) the aerodynamic benifit of the hardtop.

Doesn't look as good though... :P 8)

Boags
Last edited by Boags on Fri Oct 27, 2006 8:23 pm, edited 1 time in total.
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AJ
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Postby AJ » Fri Oct 27, 2006 8:09 pm

don't you mean \"outWEIGH\" Mr Linguistics?????........... :P :P :lol:
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Boags
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Re:

Postby Boags » Fri Oct 27, 2006 8:23 pm

AJ wrote:don't you mean "outWEIGH" Mr Linguistics?????........... :P :P :lol:


:oops: That's what I said...

Shhhh, don't tell anyone AJ.
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zoomzoom
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Postby zoomzoom » Fri Oct 27, 2006 8:23 pm

yes boags i think that is really my dilemma. in my brain i know the aerodynamics of the car with the roof would have to make it go much quicker, but without is noisyer which makes me feel like i am going faster... and it looks better without :) mainly it looks better :lol:

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mickfred
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Postby mickfred » Mon Oct 30, 2006 11:26 am

I think you get a better/higher 'Top Speed' with the HT roof on.

:)
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Postby sirbob » Mon Oct 30, 2006 2:34 pm

The perfect example of this was as follows:

NB8A, $1600 worth of exhaust (82kW?), roof down, 1/2 tank of fuel, driver only

NA6, $300 worth of exhaust (70kW?), driver and passenger, 1/2 tank fuel, hardtop on

Both chasing eachother through btm of queen mary falls outside of boonah, NB was WOT and NA was slowly walking away....

NOTE NA6 driver did have much bigger testicals than NB driver in the corners, but this was in a straight line... at very naughty speeds

Yes, roof up makes a HUGE difference to top end speed
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irwin83r
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Postby irwin83r » Mon Oct 30, 2006 4:18 pm

nah roof up looks better :P

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Samselectrics
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Postby Samselectrics » Mon Oct 30, 2006 5:43 pm

I only have a soft top.

I've done the tests at Phillip Island and there's about 20km/h difference in favour of roof up at the end of the straight.

Doing the same tests at Winton I found there was only about a 5km/h advantage still in favour of roof up.

Top speed at PI is about 195km/h and Winton is about 150km/h. Therefore the faster you go the greater ther roof up benefit is.

Hope this helps.

Sam
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irwin83r
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Postby irwin83r » Mon Oct 30, 2006 5:45 pm

man i wish i could make PI this year


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