duoprop shake slowly when turn right-left

[princecraft_196]

Hello,

Twin duoprop DPS-A 2008.
3 years ago I changed all Ujoint, and last summer It start shaking slowly on drive when I turned full right or full left. any idea what can be the issue ? sterndrives are presently in my garage and all Ujoint are fine, they move smooth without any restriction.

I can not figure out where that shaking is come from
thanks

 

[bruceb58]

Not sure I would be concerned if the vibration is from a full turn. If the drive/engine alignment is not correct, that will exacerbate the vibration. You check that annually hopefully?

 

[Lou C]

you will usually get some vibration when the steering is cranked over all the way one way or the other since U joints are not designed for extreme angle use like CV joints are, but I know there were some complaints on the Volvos of the steering oscillating from side to side during low speed maneuvering, not sure what the cause or solution was. As a general rule I never run mine tilted all the way up, only about 1/2 way up and never turn the steering all the way to one side or the other especially when tilted up. Still have the original u joints on a 1988 Cobra.

 

[princecraft_196]

All right guys, im very smooth with her anyway, so I keep it like that but will keep my eyes open... thanks

 

[Scott Danforth]

did you smack your props on something? if you have dinged props, your drive will shake like a dog passing a peach pit.

 

[princecraft_196]

props are fine, it shake only on idle when i turn full right or left, when i drive it straight no issue or vibration at all.