AP2 Top Speed

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11-13-2005 | 04:16 PM

#21

waltk88

Joined: Jun 2002

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From: SoCal

Quote:

Originally Posted by '05 S2K SBM,Nov 13 2005, 04:30 PM

Can you please tell me what gear you are referring to? My spreadsheet doesn't take into account that gear. If there is such a gear, then it needs to be accounted for.

There's a 1.208 secondary gear reduction.

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11-13-2005 | 04:20 PM

#22

xviper

Joined: Mar 2001

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[QUOTE='05 S2K SBM,Nov 13 2005, 07:10 PM] Ok....without causing anymore drama...please tell me where the spreadsheet is wrong.

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11-13-2005 | 04:23 PM

#23

2QYK4U

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Quote:

Originally Posted by waltk88,Nov 13 2005, 06:16 PM

There's a 1.208 secondary gear reduction.

No problem...where do I account for that in my spreadsheet?

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11-13-2005 | 04:24 PM

#24

xviper

Joined: Mar 2001

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Quote:

Originally Posted by S2oooNvegas,Nov 13 2005, 06:14 PM

your all high. LOL. 157 is where it hits the limiter. done deal, argue all you want, this makes it obvious none of you are either making the power, or are willing to push it that far. ive done it so many times i stopped counting. boyracers2k has also done it, he hit 156 and was flickering, couldnt go any futher. i can slam the limiter at 157 and the car bucks LOL.
later dave

You haven't put up anything new or anything that contradicts what that gear calculator link reveals. Keep in mind that the gear calculator only goes up to 8000 rpm. If you bounce off the rev limiter (which is a bit higher), all you've done is to prove that gear calculator correct. Gear math, when done correctly, does not lie.

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11-13-2005 | 04:24 PM

#25

2QYK4U

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Quote:

Originally Posted by xviper,Nov 13 2005, 06:20 PM

You are forgetting THE most important point in all your calculations. All S2000s have this little thing called a "secondary gear reduction". On the AP2, it is "1.206". On the AP1, it is 1.16.

I don't think anyone has to "validate" your parameters. This has been done in that link I put up. If you now use that reduction number, you will finally get what that gear calculator link has been telling us for years.

Understood. The spreadsheet I have doesn't account for that factor for whatever reason.

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11-13-2005 | 04:38 PM

#26

xviper

Joined: Mar 2001

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I applaud your effort and interest in this, but with the existing gear calculator, it seems you are trying to re-invent the wheel.

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11-13-2005 | 05:52 PM

#27

Jakup

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Joined: Oct 2005

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From: Cincy, Ohio

Also, you are saying that people's experiences with topping out are null because of the fact there is drag. This wouldn't be true, as drag would be a factor into limiting your vehicle from reaching a certain speed (i.e. not being able to climb past 7k RPMs in 6th gear). 8K RPMs would be the same driving as it would anywhere else, whether it be jacked up, gear calculator, etc. (except, of course, if you're losing traction).

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11-13-2005 | 05:58 PM

#28

2QYK4U

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Quote:

Originally Posted by xviper,Nov 13 2005, 05:09 PM

I don't believe you. You have something missing from your calculations. I'll let you figure out what it is.

I'll give you a hint:
http://www.turnzero.com/technical_resource...gear_calculator

The top speed (geared or otherwise) of an AP2 is 151 mph.

Those ain't it.
The spreadsheet you posted are wrong.

ps. Not sure why you went to the trouble of doing these calculations (wrong as they may be) since this has been done correctly a long time ago.

The gear ratios provided on that website conflicts with the ratios provide by Honda (for an '06 at least). Also, the FD is 4.1, not sure what this 2.1xxx is about.

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