Prop nuts thread direction

[Andrew M]

Hi,

Next week to get her ready for transport we've got to remove the props off my S42 that a fellow forumite has bought (I think you all know by now).

She's on TAMD75 s with shafts. For the life of me I can't remember if the threads for the prop nuts are both normal rotation or if they are handed to account for the counter rotation of the props.

Anyone know please ?

Thanks,

Andy

 

[P4Paul]

Hopefully the LH nut will have some notches on the corners of the flat sides

 

[Andrew M]

Thanks Paul, here's what is on the boat, sorry should have included that in 1st post.

 

[P4Paul]

Thanks Paul, here's what is on the boat, sorry should have included that in 1st post.View attachment 50379

I would put money on that one being left handed

 

[jfm]

Exactly as P4Paul says - those marks in his picture are standard for many years on LH thread nuts. However, afaik there are plenty of cruising boats with r/h nuts on the starboard prop, and just a decent lockwasher. My boat has a r/h thread on the starboard shaft

 

[volvopaul]

Both RH thread andy.

 

[Andrew M]

Brilliant, thanks chaps.


Andy

 

[P4Paul]

I would put money on that one being left handed

Guess I was wrong then. that's a £1 in the RNLI box as I walk past this weekend...

 

[Andrew M]

Thanks Paul, that's good to learn about the notches ont the L/h nuts though.

Cheers,

Andy