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Drivetrain For all you RPM/HP experts, How fast was I going?!?

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Old Aug 4, 2003 | 12:20 PM
  #1  
Cat's Avatar
Cat
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4th Gear
Joined: Aug 2003
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From: So Cal
Okay, this just might be the silliest post I've ever made, but here it goes anyway, because I'm always willing to sacrifice a little dignity to satisfy my curiosity.
I posted it here instead of MINItalk because I figured you guys would know best. Sorry it's a bit OT.

I test drove the MCS just once, and it wasn't long enough to get used to the speedometer being so far to the right. Additionally, I was instantly transported to Nirvana as I totally clicked with the car. Talk about being one with the universe! It was impossible to be left-brain or analytical. The most I could do was check the RPM gauge every now and then, as I tried to find the optimal shifting points. There was NO traffic so I don't even know if I was speeding. For all I know, I could have been driving a slow car that just happened to be fun to drive because the gearbox and steering felt so good.

So my question is, how fast was I going?!? And can you break it down by gear please?
I think I only made it up to 4th gear but at least 5k rpm (I think) in 2nd, 3rd, 4th.

And just what are the optimal RPM's at which to shift before power fades?

Thanks for your help and patience!

_________________
=^.^=

Almost due:
'03 Elec. Blue/White, Black leather/Silver, Packages 1,2,3, rain sensor, H/K
(And I thought I wanted to save money! LOL!)
 
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Old Aug 4, 2003 | 12:33 PM
  #2  
Grinder's Avatar
Grinder
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Joined: Sep 2002
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From: Northern VA
This should show you speed vs rpm for the gears you're interested in.


And somewhere andy has a nice graph of acceleration (in terms of Gs) vs speed for each gear. (i'm still searching for it...)
 
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Old Aug 4, 2003 | 12:35 PM
  #3  
Phobol's Avatar
Phobol
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According to my MA the MCS can reach top speed of 135MPH in 4th gear.

So, you were probably speeding just a tad.


 
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Old Aug 4, 2003 | 12:36 PM
  #4  
Grinder's Avatar
Grinder
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From: Northern VA
I cant seem to find the graph, but it's very much like this one, except this is for his GTI...

 
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Old Aug 4, 2003 | 12:38 PM
  #5  
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Grinder
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From: Northern VA
Andy, chime in any time here, but this is a quote from you over on M2 (the image link is broken by now):

"I had a chance to do some more logging last night and plotted out full pulls in 1st, 2nd, and 3rd.



Acceleration is maximized by the following shifts:

1>2: 6600 rpm (42 mph)
2>3: 6400 rpm (64 mph)

Where the curves cross is where the acceleration in two gears is equal. For example, at 40 mph, the MCS could be in 1st, 2nd, or 3rd gear. The acceleration at that speed is:

1st: 0.29g
2nd: 0.28g
3rd: 0.23g

The greatest acceleration at that speed is achieved in 1st gear.

Now, at 45 mph, the MCS could be in 1st, 2nd, or 3rd gear. The acceleration at that speed is:

1st: 0.25g
2nd: 0.28g
3rd: 0.22g

The greatest acceleration at that speed is achieved in 2nd gear.

The point where the curves cross is where you should shift, such that you are always in the gear that yields the greatest acceleration. "
 
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Old Aug 4, 2003 | 01:17 PM
  #6  
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DocSandi
2nd Gear
Joined: Apr 2003
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From: The beautiful central coast of California
Grinder,
Frigging amazing
Woody
 
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Old Aug 4, 2003 | 10:47 PM
  #7  
Cat's Avatar
Cat
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4th Gear
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From: So Cal
awww thanks Grinder! Much appreciated! You rock!

Here's a beer for everyone!
 
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Old Aug 5, 2003 | 05:32 PM
  #8  
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BlueMCS
5th Gear
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From: East
Those do look like speedshifts Grinder, No?
 
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