Free Android Auto Performance Calculator
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From: West Virginia
Joined: Jun 2009
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Again Rob...this is really cool. I've used the Dyno correction factor part to educate a few people that go spouting off dyno numbers without any backup info on how it was tested that their numbers are almost meaningless.
May I offer two suggestions to that area?
1. a Help definition of exactly what the correction factors are. Meaning their testing parameters, and perhaps a reason of why they were created.
2. but a bigger help would be the ability to input the hp rating into any of the correction factor areas and they be able to calculate the others. Unless I'm missing something, the only hp rating you can put in is uncorrected, and then it will calculate the others.
But commonly, I'll have the hp rating already corrected in STD or SAE, and I'd like to input those, and then have it calculate the others. As it stands, to do that I have to input guesses into the uncorrected field and press calculate until I hit the correct "known" number.
May I offer two suggestions to that area?
1. a Help definition of exactly what the correction factors are. Meaning their testing parameters, and perhaps a reason of why they were created.
2. but a bigger help would be the ability to input the hp rating into any of the correction factor areas and they be able to calculate the others. Unless I'm missing something, the only hp rating you can put in is uncorrected, and then it will calculate the others.
But commonly, I'll have the hp rating already corrected in STD or SAE, and I'd like to input those, and then have it calculate the others. As it stands, to do that I have to input guesses into the uncorrected field and press calculate until I hit the correct "known" number.
Thread Starter
Former Moderator
Joined: Jul 2005
Posts: 4,634
Likes: 28
From: West Virginia
Again Rob...this is really cool. I've used the Dyno correction factor part to educate a few people that go spouting off dyno numbers without any backup info on how it was tested that their numbers are almost meaningless.
May I offer two suggestions to that area?
1. a Help definition of exactly what the correction factors are. Meaning their testing parameters, and perhaps a reason of why they were created.
2. but a bigger help would be the ability to input the hp rating into any of the correction factor areas and they be able to calculate the others. Unless I'm missing something, the only hp rating you can put in is uncorrected, and then it will calculate the others.
But commonly, I'll have the hp rating already corrected in STD or SAE, and I'd like to input those, and then have it calculate the others. As it stands, to do that I have to input guesses into the uncorrected field and press calculate until I hit the correct "known" number.
May I offer two suggestions to that area?
1. a Help definition of exactly what the correction factors are. Meaning their testing parameters, and perhaps a reason of why they were created.
2. but a bigger help would be the ability to input the hp rating into any of the correction factor areas and they be able to calculate the others. Unless I'm missing something, the only hp rating you can put in is uncorrected, and then it will calculate the others.
But commonly, I'll have the hp rating already corrected in STD or SAE, and I'd like to input those, and then have it calculate the others. As it stands, to do that I have to input guesses into the uncorrected field and press calculate until I hit the correct "known" number.
To convert from one HP standard to another, input in the known standard's horsepower, temperature and barometric pressure. The correction factor for the known standard will be calculated as 1.0 and the other standards' CF and HP will be calculated.
For example: You have a dyno slip with 305HP MSA (Motorsports Standard Atmosphere) which uses 60F and 29.92 baro pressure as its standards. Plug in 305HP, 60F, 29.92, and 0% humidity and hit calculate. The equivalent SAE and STD correction factors and horsepowers will be calculated:
MSA Correction Factor: 1.0 HP 305
SAE CF 0.95454 HP 291.13
STD CF 0.99105 HP 302.27
I'll have to add this to the help file.
Joined: Jun 2009
Posts: 3,689
Likes: 21
Originally Posted by davidc1' timestamp='1398529437' post='23131202
Again Rob...this is really cool. I've used the Dyno correction factor part to educate a few people that go spouting off dyno numbers without any backup info on how it was tested that their numbers are almost meaningless.
May I offer two suggestions to that area?
1. a Help definition of exactly what the correction factors are. Meaning their testing parameters, and perhaps a reason of why they were created.
2. but a bigger help would be the ability to input the hp rating into any of the correction factor areas and they be able to calculate the others. Unless I'm missing something, the only hp rating you can put in is uncorrected, and then it will calculate the others.
But commonly, I'll have the hp rating already corrected in STD or SAE, and I'd like to input those, and then have it calculate the others. As it stands, to do that I have to input guesses into the uncorrected field and press calculate until I hit the correct "known" number.
May I offer two suggestions to that area?
1. a Help definition of exactly what the correction factors are. Meaning their testing parameters, and perhaps a reason of why they were created.
2. but a bigger help would be the ability to input the hp rating into any of the correction factor areas and they be able to calculate the others. Unless I'm missing something, the only hp rating you can put in is uncorrected, and then it will calculate the others.
But commonly, I'll have the hp rating already corrected in STD or SAE, and I'd like to input those, and then have it calculate the others. As it stands, to do that I have to input guesses into the uncorrected field and press calculate until I hit the correct "known" number.
To convert from one HP standard to another, input in the known standard's horsepower, temperature and barometric pressure. The correction factor for the known standard will be calculated as 1.0 and the other standards' CF and HP will be calculated.
For example: You have a dyno slip with 305HP MSA (Motorsports Standard Atmosphere) which uses 60F and 29.92 baro pressure as its standards. Plug in 305HP, 60F, 29.92, and 0% humidity and hit calculate. The equivalent SAE and STD correction factors and horsepowers will be calculated:
MSA Correction Factor: 1.0 HP 305
SAE CF 0.95454 HP 291.13
STD CF 0.99105 HP 302.27
I'll have to add this to the help file.
Duh...somehow I missed the correction factor parameters at the bottom. Thanks. Depending on how far you go with this app, an idea would be to add some more info, or links, to why the standards are what they are, or how the developed. Just and idea if you want to educate people as well.
And thanks for the example of the workaround. Well, not really work around, it's just how you do it. Could you design it though to just be able to input the hp from you dyno slip into the appropriate correction factor field and have all the other change accordingly? Or is that a lot of work?
Understand of course I'm bitching, I think the app is awesome.
Thread Starter
Former Moderator
Joined: Jul 2005
Posts: 4,634
Likes: 28
From: West Virginia
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