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TOPIC: I can not find the 2nd and 3rd gear ratios volvo

I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1321

  • davebb
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I can not find the 2nd and 3rd gear ratios for my 2002 Volvo s60 D5 Diesel
The final ratio is 3.77
so how do I find these so I can use this nice program
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1325

  • DanGTZ
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Hi Dave,
It's a good thing that you managed to find the final ratio and the other car parameter to feel your car profile. I can compute the 2nd gear ratio if you give the following information :
- The real speed in Km/h of your car on 2nd gear at 2000rpm. To do so : launch a GPS app that give you the speed with a precision of 0.1 km/h (Ulysse speedo meter for example, be sure to check the "allow slow speed" option in the speedometer settings menu) and drive at EXACTLY 2000rpm stabilized for a few seconds to make sure the speed value displayed by the app is stable. The better you will perform that, the more realistic the calculated gear ratio will be.
- Your tire dimensions

Be sure that your tires are at the right pressure and that they are warmed.

Do the same in 3rd gear if you want I compute the 3rd gear ratio too.
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I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1326

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It's planned to add a wizard inside PerfExpert to calculate total ratios with the help of the GPS.
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I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1327

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Thanks Dan
That will be Fantastic
will mph redding be ok as I have a Tomtom gps in the car
or I can use my phone with the app that you suggest

Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1328

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my tires are 225/45/17
Thanks from the united kingdom
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1329

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davebb wrote:
Thanks Dan
That will be Fantastic
will mph redding be ok as I have a Tomtom gps in the car
or I can use my phone with the app that you suggest

Thanks Dave

Yes you can use the TomTom if you want, does it give you speed at 0.1 accuracy ?
If you can turn the TomTom in Km/h temporary, it will be a bit more accurate, as 0.1Km/h represent a lower speed than 0.1Mph.
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I can not find the 2nd and 3rd gear ratios volvo 4 years 2 months ago #1330

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I have put the program that you subjected on my phone and android pad so will use that
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1386

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Hi sorry I have not been back but my turbo failed
I have now fixed the car,did the speed test today in 3rd gear at 2000rpm and the speed was 52kph
can you please work out the gear ratio for me thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1395

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Please DanGTZ can you work out the 3rd gear ratio for me
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1398

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This gives a 3rd gear of 1.18 ratio.
According to the power to weight ratio of your car, I recommend you to perform tests on the 2nd gear.
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1399

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Hi Dan thanks for doing this
I will take a 2nd gear reading tomorrow
thanks For your help
I am looking forward to using this app
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1401

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Hi DanGTZ I did the test in 2nd gear at 2000 rpm and the speed was 32 kmph
it would be very good if you could work the gear ratio for me
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1403

  • DanGTZ
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According to the info you provide, your 2nd gear ratio would be : 1.92
DanGTZ wrote:
...To do so : launch a GPS app that give you the speed with a precision of 0.1 km/h (Ulysse speedo meter for example, be sure to check the "allow slow speed" option in the speedometer settings menu) and drive at EXACTLY 2000rpm stabilized for a few seconds to make sure the speed value displayed by the app is stable...

Note that as I already mentioned, the speed value you provide must be accurate enough (0.1Km/h) to have a chance to compute a realistic gear ratio.
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1405

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Hi Dan thanks for doing this,does the reading not sound right?
I was using Ulysse speedo meter with the read slow speed selected
I will now try and see how this dyno app works for me
can you tell me what calculations you had to do to work the ratios out
Thanks Dave
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I can not find the 2nd and 3rd gear ratios volvo 4 years 1 month ago #1409

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The numbers you provided don't have a decimal part. So I was wondering if they are accurate enough.
Last Edit: 6 months 1 week ago by DanGTZ.
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