How to measure meth/water mix?

[FSRbikr98]

I'm trying to figure out what the best way to get a 75/25 meth/water mix.

I have VP racing methanol, and i am trying to make a mix tonight,

any advice?

[SlowCar]

Quote: Originally Posted by FSRbikr98

I'm trying to figure out what the best way to get a 75/25 meth/water mix.

I have VP racing methanol, and i am trying to make a mix tonight,

any advice?

either a measuring cup or a weighing scale

cup is the easier method

http://www.ashland.com/pdfs/technica...sh%20Point.pdf

methanol has real low surface tension/viscosity, it will "pour and splash" everywhere except where you want to get it into

[SlowCar]

btw use distilled water from the grocery store

[FSRbikr98]

yes the distilled water is a must, and i figured a measuring cup would do the trick but i just wanted to be accurate.

Thanks for the help

[FSRbikr98]

I'm trying to read the PDF you posted, and i do not quite understand the values. It says meth/water mixture, and % by either, can u explain how its calculated?

[SlowCar]

methyl alcohol = 0.791g/cc
water = 1.0g/cc

using measuring cup - 1000cc basis:

750ccMeOH + 250ccH2O = 1000cc
750/1000 = 75 v/v% methanol in the methanol/water mix

density = mass/volume

0.791 = mass/750
mass = 593.25gms methanol in the above 75 v/v% methanol/water mix

593.25gms methanol + 250gms water (water = 1.0gm/cc) = 843.25gms

593.25/843.25 = 70 w/w% methanol

therefore, 75 volume percent methanol in water = 70 weight percent methanol in water

[FSRbikr98]

ok so if i do 1 cup of water and 3 cups of meth what percent am i looking at

holy shit i wasnt that great in math, but damn dude i dunno wtf is that up there haha. I believe the lower portion of that equation is if i'm measuring the meth out using a scale correct?

[SlowCar]

3 cups methanol + 1 cup water is what you need to get your 75/25 methanol/water mix

[FSRbikr98]

ok thanks man, thats a good bit of info you posted there.