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Old 09 September 2011, 11:14   #11
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Hi burners, regarding power output. A good friend informs me that power output increases as you increase the proportion of oil, right up to the point it oils yer plugs. But in practice, out on the water, 100/1 and the correct prop will easily give you enough power to scare yourself and your mates witless! Always use the marine grade oil, brand doesn't matter, it's down to whats available locally. Also, check out the australian thundercat forum, masses of tech stuff relating to these boats. Finally, enjoy your cat!
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Old 12 September 2011, 05:45   #12
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Originally Posted by akirk View Post
Not sure that works does it?
50:1 means 50/51 of one and 1/51 of the other, so it should be 50 litres of fuel and 1 litre of 2 stroke to give a total of 51 litres...
Have you ever tried getting 51 litres into a 50L tank? (or in my case 30.6L into a 30L tank...) Bottom line is you still need to work out the proportion of oil for the given volume of tank, then top up with fuel.

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If you always mix the additional mix externally,
And there lies the problem.... in doing so I would need not only potentially 90L worth of gerry cans, but three more cross decks of fuel, which is just an invite to loose a chunk of it in spillage & add a bit more contamination to the fuel.

Hence my working out the appropriate quantities of oil for an empty portable tank. What I also didn't mention above is the two 5L tanks of premix for the Aux luking in the wings...
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Old 23 September 2011, 17:26   #13
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Silkolene is good stuff - They also do marine TC3 2t product called "Aqua"
Tohatsu also have their own brand of TC3 2t oil, I have used both

Hope this helps...
Reading this thread as a biker & boater,i thought the oil was different coz of marine enviroment stuff but as time goes on what u have said makes sense,re burn temp etc,does this explain why boat oil is blue ie ocean & bike oil is any other colour???? or am i still missing the big picture!
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Old 26 September 2011, 03:50   #14
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Originally Posted by xr650 View Post
boat oil is blue ie ocean
Evinrude XD100 is gold coloured.....like the price
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Old 26 September 2011, 05:33   #15
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Originally Posted by xr650 View Post
Reading this thread as a biker & boater,i thought the oil was different coz of marine enviroment stuff but as time goes on what u have said makes sense,re burn temp etc,does this explain why boat oil is blue ie ocean & bike oil is any other colour???? or am i still missing the big picture!
Nope because the aircooled 2T oil that goes in my strimmer is blue and it doesn't work at all well in the sea as you get cavitation on the cord and the revs bog down quite a bit
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