bravo x deminsions

[slomo]

ive been told my x dimentions are to be 17.5"s but i havent got a clue what that means.where do i measure from and what do i measure to a pic or drawing would be good

cheers shaun

[Tony Davis]

Here you go.....

[slomo]

thanks tony
wont 17.5 mean my prop will be surfacing or roughly how far up the transom will the cavitation plate be

thanks again

[Tony Davis]

depends on your transom angle. The second pic gives dimensions for cav plate level with running surface ( zero X height) so if you have a 13 degree transom, it would be 3 3/8th above.

[slomo]

will that work ok what do you thinkon a 26 scarab. my brother had a duo prop volvo drive on a searay his cav plate was 1.5" above and it woulden get on plane
what hight was your extremes and what prop suited best
cheers

[Tony Davis]

most of our boats have been +2", although a few have been +4". 21 & 26 seem to run best with a 3 blade mirage, the 24 only really works with a 4 blade Bravo 1 or similar.

[slomo]

sorry for beign a paim in the a## tony but what are the advantages of keeping it so high
im afraid of going too high and it slipping like a bitch

thanks again

[Tony Davis]

the extra 2" up on a 24 Extreme with a 445hp b/b gives around 3-4mph top speed.

My advice would be to go for around +2", then beg steal or borrow a 2" shorty Imco lower.

[slomo]

tony thank you so much for the advice ill mount the template on the back of the boat at 16.5 take a picture and send it to you and you can let me know what you think
cheers

[larby]

Wow, that makes mine +6!!!
It's 19" from the bottom of my 'v' to my crankshaft centreline! No wonder it throws a rooster when trimmed out and is a pig to get on the plane!

James