20 replies to this topic

[podifold]

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.
 
Updated link 

 

https://jscalc.io/ca...RNEglVkKLQir11T

Edited by FlyingScot, 15 October 2020 - 09:08 AM.
Original Website and link gone

[MIGLIACARS]

nice needs pinning

[coopdog]

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

[HUBBA.HUBBA]

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

[podifold]

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.

[timmy850]

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

[podifold]

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

[giannoutsos]

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

[podifold]

Thank you.

 

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

[giannoutsos]

Nice one,
Thanks man

[mini13]

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

[podifold]

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.

[Steve220]

Very nice work there! This needs to be pinned,

[Steve220]

Also I thought +20 Pistons made 1293cc?

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

[FlyingScot]

Pinned

FS