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Old 11-04-17, 04:50 PM   #11
Hornet 6
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I suspect Phill wasn't being entirely serious; could be 32:1 if you take 2 gallon of petrol and add 1/2 pint of oil, or 31:1 if you start with the oil and make it up to 2 gallons total - see?

NHH
Don't stick for him, let him dig his way out unaided

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Old 11-04-17, 07:32 PM   #12
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I suspect Phill wasn't being entirely serious; could be 32:1 if you take 2 gallon of petrol and add 1/2 pint of oil, or 31:1 if you start with the oil and make it up to 2 gallons total - see?

NHH
Exactly. Neil I was referring to the methodology you use to make the petrol/oil mixture. There is a difference if you take the addition approach, or the volumetric approach. Plus I was having a little fun, hence the emoticon.

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Old 11-04-17, 07:47 PM   #13
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Philip,

If you remember correctly you and I discussed on Saturday the lack of understanding regarding the injection of any use of light heartedness :whistle

Martin P
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Old 11-04-17, 08:13 PM   #14
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I was more interested in how you work it out, the actual maths if you like.
To mix fuel I use a litre mixing can, that once full with petrol has a scale against which you add oil.
For larger quantities I add one shot mixers to the appropriate quantities of petrol.
(for which I need the maths)
Then again for smaller tools like chainsaws and brush cutters I just use Aspen, aspen 2 for the strokers and aspen 4 for the proper tools.

Neil.
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Old 11-04-17, 08:27 PM   #15
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Originally Posted by Lister M View Post
Philip,

If you remember correctly you and I discussed on Saturday the lack of understanding regarding the injection of any use of light heartedness

Martin P
Indeed, a little fun and a smile here and there, makes the day go round. There's far too much seriousness in the world.

Phillip
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Old 11-04-17, 08:29 PM   #16
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Originally Posted by Hornet 6 View Post
I was more interested in how you work it out, the actual maths if you like.
To mix fuel I use a litre mixing can, that once full with petrol has a scale against which you add oil.
For larger quantities I add one shot mixers to the appropriate quantities of petrol.
(for which I need the maths)
Then again for smaller tools like chainsaws and brush cutters I just use Aspen, aspen 2 for the strokers and aspen 4 for the proper tools.

Neil.
That sounds like both are addition methods, ie you are adding a known amount of oil to a known amount of petrol.

There are lots of 2 stroke oil/petrol mix calculators on the www.

Phillip
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Old 11-04-17, 10:43 PM   #17
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Hi Neil,

The maths is simple, just divide your required total qty in litres by the ratio to give the oil req'd.

So for 10 litres at 50:1 , you'd get 10 / 50 = 0.2l /200 ml of oil.

For 5 litres at 32:1 you'd get 5 / 32 = 0.156L / 156 ml of oil.

Best regards,
Scott
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Old 11-04-17, 10:48 PM   #18
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Quote:
Originally Posted by ScottUK View Post
Hi Neil,

The maths is simple, just divide your required total qty in litres by the ratio to give the oil req'd.

So for 10 litres at 50:1 , you'd get 10 / 50 = 0.2l /200 ml of oil.

For 5 litres at 32:1 you'd get 5 / 32 = 0.156L / 156 ml of oil.

Best regards,
Scott
Thanks Scott, and just to make it idiot proof, for example 1 you would add 200ml oil to 10 litres petrol, not add the oil and then add petrol for a total of 10 litres ?

Neil.
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Old 11-04-17, 10:54 PM   #19
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Yep, you've got it, you'd add the 200ml to the 10 litres.

Happy mixing! :)

Best regards,
Scott
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Old 11-04-17, 10:59 PM   #20
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Quote:
Originally Posted by ScottUK View Post
Yep, you've got it, you'd add the 200ml to the 10 litres.

Happy mixing! :)

Best regards,
Scott
Thanks for confirming that.

For now I'll just be mixing it a litre at a time, until I find what works for me.
I'll also need to sort out a tanks for the P5.
I have two that I don't like much, not sure if I want to try making one I like

Neil.
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