Toe in or Toe out??? (AGAIN)
 

I've read a ton of articles and it seems that the rigging type of guys state that if spinning out to run toe out about 1/8" and if turning in to toe in 1/8"

I personally turn out and found my drives were toed in 3/8"; too much and opposite it appears. I had to machine a bushing in the tie bar to get the propshafts to come in at all. It seems like the manufacture just got what they could out of the tie bar setup and felt it was close enough :(

It seems there are many variables that play into this but all I can tell you is that my drives props spin out and PSCL is 4-3/4" below the hull.

Any educated suggestions here?

I'm thinking toe out about an 1/8"...
Thanks in advance,
Dave

no toe for me,propshaft same split as engine split.:party-smiley-004:

Well Dave what did you end up doing? I am dialing in my boat and this is on my testing to do list. My understanding is it could track better or stablize.
Good luck

I was always told depending on the way the boat was set up, that with the hydrodynamic pressure to always toe the tips in a bit, so that way at speed they would have the tendency to be pushed in/straight. is that correct?

Hi Dave,

Does your Nordic chine walk badly at high speeds? Violently side to side and maybe it helps to drag the tabs down a little at say maybe above 80 or near there??

Not a side to side slam but it was rocking (pitching) left to right pretty bad.
I think I have it all worked out now. With the toe alignment (1/16 out) and the addition of 380 K-planes vs 280's I was able to slightly drag the long tabs at WOT which enabled me to keep her perfectly flat and straight well past the 80's :drink:

I may be able to confidently drop from our high altitude now and see how she runs :eek:

Thanks,
Dave

Just a thought about toeing the drives! I did tons of dual O/B and I/O over the years but that was back when both engine spun the props the same direction, the way it was explained in tech school back then was it done to keep light tension on the tie bar to help to eliminate wear and oscillation. Any play would allow the gear cases to oscillate. Today with counter rotation and external steering, with these setups do the drives oscillate? Makes me wonder if it is still necessary and does it in fact scrub a tad of top end off. Worth thinking about when you go for that last bit of top end.