How to Mix Fluids to create 200k

[NitroStar]

I can find some 500k fluid and plenty lower weights. I'm trying to create some 200k. How many parts of a lower weight diff fluid would mix with how many parts of 500k to end up with some good old 200k fluid? Math question lol

 

[RCPropaganda]

ughhhh. Math is not my strong suit. just mix something up till your mind is happy.

 

[X]

Not sure if this is how this works in the real world, but....

5 parts 100k + 2 parts 500k should average just over 200k (214K)

 

[NitroStar]

That's what I'm looking for BUT 100k is out of stock to so I could use that formula to use say 20k and 500k to make some 200k. If I can figure out that formula LOL

 

[X]

That's what I'm looking for BUT 100k is out of stock to so I could use that formula to use say 20k and 500k to make some 200k. If I can figure out that formula LOL

Again, I'm qualifying this with I don't know if this is how this works in real life......

5 parts 20k + 3 parts 500k = an average of 200k

 

[NitroStar]

Well if that's real life if I can mix up some 200k with that many parts of each. Thanks a ton. I'm gonna read this proportion stuff on google when I get a minute.

 

[L0stB1t]

For 1 part 20k fluid and x parts 500k fluid the formula is: (1*20 + x*500)/(1+x)=200

I'm too lazy to solve that equation but luckily we have computers with AI for that now
https://www.wolframalpha.com/input/?i=(1*20+++x*500)/(1+x)=200

This tells us you need 0.6 parts of 500k fluid, so @X is right; 5 parts of 20k fluid and 3 parts of 500k fluid.

 

[WTF MIKE]

Just use 500k lots of people do and love it

 

[Mr.Duke]

https://www.widman.biz/English/Calculators/Mixtures.html

 

[NitroStar]

Thanks a ton y'all. What I did this evening is took my new Kraton (have ran it once) and took the center diff out and it was half full so I emptied and wiped out what I could and filled it back up with 50k fluid until I get some more.

 

[L0stB1t]

https://www.widman.biz/English/Calculators/Mixtures.html

Thanks for this! I entered 100k and 200k in a 50/50 ratio in the calculator which results in a 141k mixture, not a 150k mixture as I expected

Apparently you cannot simply rely on the ratio of the mixture, it's way more complicated and really a science on its own:
https://en.wikipedia.org/wiki/Viscosity#Blends_of_liquids
https://en.wikipedia.org/wiki/Viscosity_models_for_mixtures#Classic_mixing_rules_for_liquid
https://neutrium.net/fluid_flow/estimating-the-viscosity-of-mixtures/


Anyway, in this example it's just 6% lower than what I expected, which won't make a noticeable difference in driving I guess. To get 150k, you'd need about 60% to be the heavy fluid.

 

[Big Kid]

as stated just 500K the center ... works awesome !

 

[NitroStar]

Well now, EVERYWHERE I try to find 200k and 500k diff fluid is out of stock. Associated fluid is the best deal due to getting 2 oz for 7 to 9 bucks. I bought some 100k a while ago. Will have to do for now

 

[JT58]

Still no 200k or 500k out there... and I crazy for thinking about mixing up 50/50 of 100k and 1m?

 

[Mr.Duke]

Go for it . No harm in mixing them together, it's what I've been doing with 100k, 200k and 500k. Just label the bottle so you don't forget the viscosity

 

[WTF MIKE]

Big boys with cool toys has 200k but they are in Canada. You would have to pay shipping