It is currently Jul 23rd, '17, 03:53

All times are UTC + 10 hours [ DST ]




Post new topic Reply to topic  [ 9 posts ] 
Author Message
PostPosted: Apr 4th, '11, 22:32 
Offline
Yachtmaster
User avatar

Joined: Nov 28th, '06, 08:36
Posts: 2102
Location: Sunbury Vic
Has thanked: 329 times
Have thanks: 219 times
Hi Guys and Girls,

The following link leads to a handy fuel mix chart.

http://www.manxyouthtrials.com/two-stroke.pdf

_________________
Ed
Wanton C22/110
All I wanna do is sail
http://www.baysidetrailableyachtclub.com
Photo shows Wanton at Nara Inlet, Whitsundays, Qld.
Image


Top
 Profile  
 
PostPosted: Apr 5th, '11, 00:04 
Offline
Admiral
User avatar

Joined: May 9th, '07, 02:05
Posts: 9050
Images: 1
Location: Bayside Melbourne
Has thanked: 214 times
Have thanks: 860 times
Wanton wrote:
Hi Guys and Girls,

The following link leads to a handy fuel mix chart.

http://www.manxyouthtrials.com/two-stroke.pdf


The maths is so simple, yet the consequences of a stuff up so bad, and the probability of a stuff up so small yet inevitable in the long run.

The trouble is that it's expressed as "50:1" when you're not interested in how much petrol to add to your oil, you want to know how much oil to put in your petrol.

But reading the table it finally dawned on me...


Victa lawnmower, 25:1 = 4%.
1 litre petrol; 4x10ml = 40ml of oil.

My old Chrysler outboard, 50:1 = 2%.
12 litre tank requires 2x120ml = 240ml of oil.

INMA's Mercury with magic synthetic oil at 75:1 = 1.33%
12 litre tank requires 1x120ml + 1/3 x 120ml = 160ml of oil.

Never again will I think of 25:1, its 4%!

My Honda 4 stroke outboard, 0% oil. Even easier.

Four strokes! For the mathematically challenged!
(And engineers who don't want to do maths on weekends)

_________________
A man's boat is his Castle. The Gippsland Lakes are my moat. Castle 650 #10, Roller Coaster.


Top
 Profile  
 
PostPosted: Apr 5th, '11, 09:42 
Offline
Administrator
User avatar

Joined: Oct 10th, '06, 22:24
Posts: 3504
Images: 27
Location: Romsey Victoria
Has thanked: 175 times
Have thanks: 371 times
Ed,
On "Moody Blue" I have a little tag (Laminated print) hanging on the fuel line, that shows how much oil to add.

When the tank is part empty and topped up I then know how much oil to add based on how much petrol was added.

I'll post the file later from home.

Jeff


Attachments:
fuel.xls [16 KiB]
Downloaded 280 times

_________________
"There is no perfect boat. There are only those shaded to your preferences.":-)


Last edited by MoodyBlue on Apr 5th, '11, 23:19, edited 1 time in total.
Added "FUEL.XLS" file
Top
 Profile  
 
PostPosted: Apr 5th, '11, 10:43 
Offline
Admiral

Joined: Nov 5th, '06, 13:07
Posts: 5161
Has thanked: 1155 times
Have thanks: 484 times
This is my chart that stays with my oil bottle.

The oil bottle is a measuring type with a 1 liter holding tank and a 15mm measuring tank on top with two caps.

Two stroke mix
Ratio

Petrol, 25:1 40:1 50:1 75:1 100:1
1, 40 25 20 13 10
2, 80 50 40 27 20
3, 120 75 60 40 30
5, 200 125 100 67 50
10 400 250 200 133 100 OIL ml

Edit, I can't get the columns to line up.

_________________
RL24 Mk4 cruiser Mariner 5 2 stroke

A bad day in the Whitsundays is better than a good day at work. Unless you work in the Whitsundays.


Last edited by INMA on Apr 5th, '11, 10:58, edited 5 times in total.

Top
 Profile  
 
PostPosted: Apr 5th, '11, 10:56 
Offline
Yachtmaster
User avatar

Joined: Nov 28th, '06, 08:36
Posts: 2102
Location: Sunbury Vic
Has thanked: 329 times
Have thanks: 219 times
Here is a copy of the Chart showing only the metric converstion table for fuel mix. I have added the measurment for 75:1 mix as well.


Attachments:
File comment: This is a PDF file. You will need Adobe PDF reader to be able to view it.
Two Strok Fuel Chart.pdf [35.12 KiB]
Downloaded 680 times

_________________
Ed
Wanton C22/110
All I wanna do is sail
http://www.baysidetrailableyachtclub.com
Photo shows Wanton at Nara Inlet, Whitsundays, Qld.
Image
Top
 Profile  
 
PostPosted: Apr 5th, '11, 20:49 
Offline
Able Skipper

Joined: Aug 30th, '09, 18:09
Posts: 629
Location: Brisbane
Has thanked: 72 times
Have thanks: 45 times
Thanks Wanton, much easier than having a brain aneurism every time you go to fill up the tank!! 8)

_________________
MacGregor 26S "Myuna"


Top
 Profile  
 
PostPosted: Apr 5th, '11, 20:54 
Offline
Admiral
User avatar

Joined: May 9th, '07, 02:05
Posts: 9050
Images: 1
Location: Bayside Melbourne
Has thanked: 214 times
Have thanks: 860 times
INMA wrote:
This is my chart that stays with my oil bottle.

The oil bottle is a measuring type with a 1 liter holding tank and a 15mm measuring tank on top with two caps.

Two stroke mix
Ratio

Petrol, 25:1 40:1 50:1 75:1 100:1
1, 40 25 20 13 10
2, 80 50 40 27 20
3, 120 75 60 40 30
5, 200 125 100 67 50
10 400 250 200 133 100 OIL ml

Edit, I can't get the columns to line up.


You never mentioned this when you got me to mix you some two stroke fuel off Sandringham at Xmas!

Rotten sod made me do maths on a boat!

_________________
A man's boat is his Castle. The Gippsland Lakes are my moat. Castle 650 #10, Roller Coaster.


Top
 Profile  
 
PostPosted: Apr 5th, '11, 22:34 
Offline
Admiral

Joined: Nov 5th, '06, 13:07
Posts: 5161
Has thanked: 1155 times
Have thanks: 484 times
Zeb, its written on the side of the oil bottle now.

_________________
RL24 Mk4 cruiser Mariner 5 2 stroke

A bad day in the Whitsundays is better than a good day at work. Unless you work in the Whitsundays.


Top
 Profile  
 
PostPosted: Apr 8th, '11, 06:49 
Offline
Able Skipper
User avatar

Joined: Mar 14th, '10, 18:19
Posts: 644
Images: 2
Location: Brisbane
Has thanked: 25 times
Have thanks: 38 times
Hi Guys

This is a good online mixing tool ... http://www.csgnetwork.com/oilfuelcalc.html

The bottom one is liters

Cheers
Byrds

_________________
C18 #457 SkyeMist


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC + 10 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group