Greetings fellas from a pretty damp Charente in S.W.France.
Started flight testing with my Evo 60. Findings are as follows .
She seems to perform best with the following set-up :
Fuel : A French brand called 'Rocket Fuel' . It's a synthetic mix but they don't mention the percentage. I 'assumed' an 18% mix so I added Castrol 'M' to take the overall lube' mix to 20%. I've found this fuel to be excellant quality .
Prop' etc : After a lot of experimenting I've settled on a TT 12.5 x 5.5 , launching at around 8,800 rpm. In the mild weather conditions here yesterday , around 9/10 degrees , the needle setting was at around 5 and a quarter turns open.
I was circulating at around 5.2 secs on my 65 foot lines.
Evo tongue muffler with NO exhaust pressure.
Just as an aside the model was a profile ship , based on an excellant article written in CLW a couple of years back by Bradley Walker. Well worth a read.
Briefly to remind colleagues , he suggested using a large engine , say a 60 , in a smaller say 40 sized 'plane as long as there was NO weight penalty . He advocated using the 60 size engine in a 'deep' low RPM setting .
The plane I am using has around 580 sq. inches of wing area weighing in at approx' 47 oz . Wing loading therefore around 11.8 oz/sq.ft. She loafes around , not too much pull on the lines and even a really lousy pilot like me can cope .
Just to finish , the Evo [ in my very amateur opinion ] represents great value for money. It's docile , a second flick starter , dead easy to set up out of the box once run-in . Just fit the smaller of the two venturis supplied and bingo !
End of plug for the Evo 60 , supplied as usual with polite efficiency by Randy.
Regards from the Charente ,
Robin [ ex-pat Brit' in the Charente full of ex-pat Brits' ]
Topic: Evo 60 Up-Date. (Read 1729 times)