Hi again!
Going through the manual, Ijust noticed, saito recommends a 6v battery pack for the ignition, at the momennt, Im using a 2s-2200 lipo with a regulator,but it was set for 4.8v!
so this could be the problem the ignition quitting at high load, so moved the jumper switch to 6v, will try this wednesday.
about the oil extracted this from the manual:
Mix a ratio of gasoline to oil of 20:1for break-in and continuous operation on all engines. <o
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A mixture of high-quality 91 octane • unleaded gasoline and a reliable high-quality 100% synthetic oil for 2-cycle engines must be used (we recommend Evolution Oil, EVOX1001Q). <o></o>
Note: With the use of an oil mixture of 20:1, it is normal to see a slight amount of carbon buildup on the exhaust valve itself. <o></o>
This is why it is so very important that you use a high quality synthetic oil and not just the standard 2-stroke oil you may be currently used to using in your 2-stroke gas engine. We have found that although these 2-stroke oils work well in their intended applications they can cause a build up of a gummy type residue on the exhaust valve in a 4-stroke gas engine and this potentially leads to the need for sending your engine in for service as the exhaust valve begins to stick and not seal properly. <o></o>
The high quality Evolution oil we recommend using will still build up a slight amount of carbon, but we have found that this build up is easily flaked off during normal operation of the engine and will not create the aforementioned typical gummy build up.
Thats wy Im trying this amsoil dominator oil,fully synthetic little carbon build up etc etc.
http://www.performanceoilsltd.co.uk/...acing_oil.html
Being this good probably should use it at 30-35:1 ratio instead 20