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 Post subject: E.T. Calculator
PostPosted: Wed Dec 24, 2008 11:35 am 
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I Say: Who Needs Boost Anyway??
Vehicle: MY10 2.0D Premium

Posts: 8073
Location: Hobart, Tas
Unsure if this is the correct section, mods will move if not.

Want a rough guestimate of what your car will run down the quarter.
E.T Calculator, CLICKY CLICKY

Conversions to remember
1KW = 1.341HP
1Kg = 2.204lb

so a forester with 150KW ATW (201.15 HP)
weighing on average 1500Kg (3307lb)
Should run approximately 14.81sec @ 92.02 MPH

Sound feasible to those who have done so??

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This has never been done before. Glad you didnt search for other threads on the subject.

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 Post subject: Re: E.T. Calculator
PostPosted: Wed Dec 24, 2008 11:53 am 
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I Say: Embrace the Grind
Vehicle: Regal Blue 05 XT Lux manual

Posts: 5512
Location: Perth
this one has an option for 4WD
it's quite accurate to my actual times at the strip

http://www.letstorquebhp.com/calculator.asp


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 Post subject: Re: E.T. Calculator
PostPosted: Wed Dec 24, 2008 1:31 pm 
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Posts: 537
Location: Sydney, Australia
Back on gtrydaz I posted up a bit about this "mathematics of drag racing" - basically derived the equations used in these calculators.

They work off peak power - but a better measure is average power across the usable rev range (usable for drag racing!)
So the Forester should do better than its peak power numbers, as it has such a strong mid range power due to the turbo.
So a 150kW atw peak power Forester is more like a 170kW atw peak power other vehicle, in that it would have a lot more power at lower revs (say 4000rpm) to bring its average up.
Also a calc with 4wd option will take a few fractions of a second off for the better launch.


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 Post subject: Re: E.T. Calculator
PostPosted: Thu Dec 25, 2008 10:15 am 
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Vehicle: MY08 XT Luxury - Steel Silver

Posts: 1745
Location: Townsville
I just pumped in the numbers for a stock MY06-MY08 Forester XT Lux and came up with a 14.77 @ 93.74mph using lefty's link. Seems pretty accurate considering I managed a 14.97 @ 91.27mph.

Although I think others have managed to get into the mid to low 14s with a stock Forester.

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MY08 XT LUXURY | Subaru Bodykit/Grill | STi Scoop | STi Tail Lights | Swift Sport Springs/KYB Excel-G struts | Whiteline RSB/Front Strut Brace | Hypertec Exhaust & CAI | HKS SSQV | 18" Enkei EKM3 Rims


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 Post subject: Re: E.T. Calculator
PostPosted: Thu Dec 25, 2008 10:31 am 
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Vehicle: CX9 GT

Posts: 9183
Location: Newport, Victoria
I've used thi as a guide...
http://wallaceracing.com/Calculators.htm


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 Post subject: Re: E.T. Calculator
PostPosted: Tue Apr 15, 2014 12:07 am 
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Posts: 150
I might try and get the beast down there if I can get off work early.


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 Post subject: Re: E.T. Calculator
PostPosted: Tue Apr 22, 2014 7:46 am 
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I Say: I'm an EJ207 fanboi all the way ;)
Vehicle: '04 Golf GTD

Posts: 5946
Location: Sowff Essex, UK
Robbks wrote:
Unsure if this is the correct section, mods will move if not.

Want a rough guestimate of what your car will run down the quarter.
E.T Calculator, CLICKY CLICKY

Conversions to remember
1KW = 1.341HP
1Kg = 2.204lb

so a forester with 150KW ATW (201.15 HP)
weighing on average 1500Kg (3307lb)
Should run approximately 14.81sec @ 92.02 MPH

Sound feasible to those who have done so??

Nope.
It's way out pretty inaccurate based on my experience; and likely because of the rear wheel thingy.

I punched in my 1/4 mile pass I did on my PiTS tune in my Foz and it's a half a second and nearly 3 MPH slower.

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 Post subject: Re: E.T. Calculator
PostPosted: Tue Apr 22, 2014 10:12 am 
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I Say: SQUIRREL!!!
Vehicle: MY99GT, MY04XT, MY14XVS650A

Posts: 9208
Location: Narre Warren, Mexico, AU
Going by the first link I should be able to get a 13.8 @ 98mph

Then using THIS ONE from greenman's link it was pretty much the same (0.5mph slower)

Stupid work PC wont let me open lefty's link :x

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 Post subject: Re: E.T. Calculator
PostPosted: Sat Jul 12, 2014 7:51 pm 
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I Say: I used to be indecisive but now I'm not too sure.
Vehicle: MY04 XT-L

Posts: 399
Location: Vic
I got a 13.64 from Robbks link.

And a 13.65 from Greenmans link.

That's with dyno'd ATWKW's converted to RWHP.

In reality I've run a 13.09 1/4m. So it's close, but not really :P

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 Post subject: Re: E.T. Calculator
PostPosted: Sat Jul 12, 2014 8:53 pm 
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I Say: Do or do not, there is no try.
Vehicle: MY17 BRZ, MY11 BT-50

Posts: 16234
Location: Medowie (near Newcastle), NSW
lucky13 wrote:
I got a 13.64 from Robbks link.

And a 13.65 from Greenmans link.

That's with dyno'd ATWKW's converted to RWHP.

In reality I've run a 13.09 1/4m. So it's close, but not really :P


time slip? not calling you out as that time is possible for your car if you get everything right, just want to see mph, 60ft etc.

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