Trim tab question

[Trimix]

Am I correct in assuming that since Ive a twin engine set up, both trim tabs should be set stright ? There is nothing to trim right, as the engines counter each other out ?

[jyasaki]

If you've got CR props, then yes, they should be straight (though I suppose there may be an argument that if you need to run on one you still want to counter the torque...)

jky

[Festinghouse]

ive no experience of a twin set up, but i think i would trim each engine on its own as each engine would be putting strain on the tie rod between the engines. sorry just an outsiders view!

[Trimix]

Well to me, logic dictates I should trim them together straight. They are CR props. But just sometimes real life and logic dont seem to go well together.

I will only use one engine if there is a problem with the other, so I will set up the whole system as a pair.

[Pikey Dave]

I don't know about Suzis, but the Etec tabs are handed, so even in the straight ahead position, there's still a slight correction applied. I have mine set to the neutral position. There should be some info in the owners manual, failing that, the rigger should have set them when the engines were installed. Make sure that if you have to run on one engine, with a "dead" engine tilted, you still have full steering movement & that the engine cowls don't clash. When you tilt an engine the geometry changes, so when you have one down & one up, they don't move at the same angle in relation to each other, if that makes sense.

[Trimix]

Ah, good point 'Pikey Dave', I will check that when I get home. I think there will be clearance if one is not in use and tilted up. But worth checking.

I looked in the manual, but its pretty generic and not specific for a twin setup. I will email Suzuki and ask directly.