prop size

[boof]

we have got a yatla odessa 189 with a 90 mercury with a 16p prop and is revving to 6 grand no good id say as it only suppose to rev to 5500 ..
my question is would a 17 p be better or a 19 p ..
all suggestions greatly appreciated ..
cheers and thanks

[FNQCairns]

What is your 16p? if it is the small diameter Vengeance, then I would be looking for a 13.25x17p but it may not work but it should go close.

cheers fnq

[boof]

it is a Vengeance prop
thanks fnq
ron

[FNQCairns]

No worries Boof if you would like to get rid of that 16p some time and the price is right I am looking for one of those to get worked, drop me a pm if/when you are ready.

cheers fnq

[trueblue]

Going up to a 17 (with the same prop diameter) should knock about 250 - 300 rpm off it.

A 19 will be too much.

You could go with the 17 and see how it goes, and then if you need to knock down the revs a little more then get a little cupping on the prop.

Cheers

Mick