Fuel:oil premix chat

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dave1490

Guest
Borescope = good idea

So the ebay unit works pretty good?


ya had it for 4 months now and it,s allway.s worked.with the piston down you can see the cylinder wall and piston without taking the head off,or if it,s carboned up.since this is $7 and a gasket is 5 it,s not a bad deal.magnetic base makes it stationary.
 
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B.K. Hosken

Member
Local time
6:10 AM
Joined
Jun 4, 2008
Messages
105
Would someone explain the "notches on the carb needle"? Or slots, or whatever? I put my HT engine together with almost zero documentation, so I just stuck things where I thought they should go. I don't recall any options of where I put the throttle cable, nor any slots/notches...help?
 
Local time
10:10 PM
Joined
Sep 22, 2008
Messages
5
Location
sydney
i ran my no name 55 cc in at 16/1 with cheap oil then moved to 20/1 as the manual sugests but lost top end .after 3 years and 10 motors the boys and i ( we've got a group of riders that work together ) i've found 18/1 to be the optimial mix yes it has an oily pipe but the fuel/air is spot on and top end power is great (60kmph 44 tooth) .the extra cost of using an expensive synthetic oil is negated by the quantity of cheap oil.eg i ran 30/1 motul full syntetic 20 dollars a litre and got less performance(though no smoke ) because even with needle on full lean(top notch) it was still to rich. another factor is alttitude its sea level here ( lotsa air).it would be different in the mountains.so save money use cheap oil 3 dollars a litre at around 18/1 and get more power.
 

brisbane_boy

Member
Local time
10:10 PM
Joined
Sep 19, 2008
Messages
66
well i ran my bike in with 25:1 using full synthetic oil. and now i use 50:1 full synthetic.
Bike runs well and havent had anything go wrong because of it.
 
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