PROPS FOR COMPETITION R/C PATTERN (F3A)
We have done intensive testing to develop a range of propellers which will outperform any other popular pattern prop that we know of. Without doubt our GRE or CRE propellers are much safer and longer lasting than products made of wood or injection moulded plastics.
To avoid confusion we have deleted, or re designated many of the older sizes from our list. The listings below include details of the appropriate Bolly pipe to be using.
120 / .140 2 Strokes
As this book is being prepared, the new .120 .140 engines are coming into use. So far we have used over 60 litres of fuel testing propellers, pipes and models for this new wave of engines. It is too early to give definite performance figures, as the engines / props and pipes are still in a development stage.
To keep noise levels down due to tip speed, we will soon have a range of 3 & 4 blade props in production. As a rule a 14.5" prop (2B) is adequate for performance, but many of these engines can easily turn a 17 or 18" prop, but the noise is too high.
4B Props = 15 x 14 4B 14.5 x 10 4B
3B Props = 16.5 x 12 3B 15.5 x 13 3B 15 x 14 3B
2B Props = 17.5 x 12 16.5 x 14.5 16.5 x 12 16 x 14 15.5 x 12.5
.60 / .80 2 Strokes
Below are our latest and greatest. Designed for Hanno or YS LS set-ups...
12.5 x 11 10,600 on EQ60 11,000 on EQ63 @ 490mm with OS RF etc
The 12.5 x 11 is the most suitable for the ‘sports’ RF user on low or zero nitro fuel.
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