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Compression Ratio Calculator


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#1 podifold

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Posted 26 March 2016 - 08:00 PM

It was so satisfying making the boost calculator that I had a go at a compression ratio calculator too.

 

There's plenty of generic ones of these on-line but this one's tailored to be Mini specific with various piston and crank sizes listed.
 
www.podifold.com/compression.html

 

 



#2 MIGLIACARS

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Posted 26 March 2016 - 08:08 PM

nice needs pinning



#3 coopdog

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Posted 28 March 2016 - 05:42 AM

There's one on the App Store called "mini head" that works a treat too

#4 HUBBA.HUBBA

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Posted 30 March 2016 - 06:59 PM

Fair play Jon. I like it. You must have too much time on your hands or you suffer minisomnia. -_-



#5 podifold

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Posted 30 March 2016 - 10:07 PM

Haha.

 

I just found that a lot of the online ones were either a little hard to use or from the U.S. so all the volumes were imperial in cubic inches.

 

I like mine 'because you can easily use the sliders to determine what you need to change from what you initially have to achieve your desired ratio.



#6 timmy850

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Posted 31 March 2016 - 04:12 AM

And it works on an iphone too, which is handy!



#7 podifold

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Posted 05 April 2016 - 05:45 PM

I've increased the accuracy slightly by incorporating a calculation for ring land volume too  :proud:



#8 giannoutsos

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Posted 06 April 2016 - 06:22 PM

Excellent work,
Well done but you are missing the 73mm pistons option.
I agree with the above needs pinning
Thanks John

#9 podifold

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Posted 06 April 2016 - 06:58 PM

Thank you.

 

I've added an option for 73mm pistons as well as 74mm.



#10 giannoutsos

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Posted 08 April 2016 - 08:25 PM

Nice one,
Thanks man

#11 mini13

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Posted 09 April 2016 - 03:17 PM

Good work,

 

can I sugest the input for deck height is in thou, as I think this is what most people would use.also som added crank lengths might be nice too for stroked 1275s, 84mm 86mm



#12 podifold

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Posted 09 April 2016 - 04:25 PM

OK, I've changed the deck height to thou and I've added your stroked cranks plus some others I found on Minispares and MED's websites.



#13 Steve220

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Posted 10 April 2016 - 08:19 AM

Very nice work there! This needs to be pinned,

#14 Steve220

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Posted 10 April 2016 - 08:21 AM

Also I thought +20 Pistons made 1293cc?

Edited by Steve220, 10 April 2016 - 08:22 AM.


#15 FlyingScot

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Posted 17 September 2016 - 10:07 PM

Pinned

FS




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