twin installation

[Tims Osprey]

Hi there, i am thinking about buying a rib with twin 60's on the back, do the props need to be counter rotating to keep the boat balanced, any help and info would be appreciated, cheers.

[Andre]

Originally Posted by Tims Osprey

Hi there, i am thinking about buying a rib with twin 60's on the back, do the props need to be counter rotating to keep the boat balanced, any help and info would be appreciated, cheers.

counter rotation is only available from 135HP upwards

[Tims Osprey]

top man Andre, i thought that was the case, with the bigger engines that is, how much power would twin 60's put out? cheers, Tim.

[Pete7]

Tim, they should be the equivalent to a single 90 hp outboard. Do consider the higher fuel costs and servicing of twins.

Pete

[Tims Osprey]

Hi pete, thanks for that, another question is will the boat be comfortable planing with only one engine running and the other tilted up? or will there be a bad balance issue? cheers, Tim.

[Pete7]

You would need to change one of the props to reduce the pitch to get the boat to plane properly. The steering linkage between the two engines may also be a problem with one tilted and one down. At sea if one broke down the offset of the good one wouldn't worry me, I would be more interested in getting home.

Pete

[Tims Osprey]

Fair comment pete, i would feel the same too.