RCU Forums - View Single Post - Roto 130 FSI 4 stroke inline 3 cyl; Anyone got any experience?
Old 11-23-2015, 02:22 PM
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kwik
 
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Default Comparing to a Valach 120cc inline twin.

I have a Valach 120cc inline twin.

It is measured to give 5000 rpm with an Engel 28x14 3 blade propeller.

It powers a 23 kg heavy model quite well.

If one look at the factory spec for the Roto 130 FSI, it says

-2 BLADE PROPELLER 28/10-29/10
-3 BLADE PROPELLER 26/10

That doesnt sound too good.......but it would be good to hear from someone that actually measured.

As mentioned, the Valach 120cc inline twin gave 5000 rpm with an Engel 28x14 3 blade propeller.