5.4 Searider prop

[118118]

hi

on my 5.4 searider im running a yamaha 75 2 sroke. at wot the engine revs to about 6000 rpm hitting upto 30kt.

what props do any of you other searider owners use?

and what speed should i hope for

sorry if its been asked before, i did a search but couldnot find.

thanks

[Neil Harvey]

Hi,

Don't know what prop I have but get 35-36 knots with a yammie 90 and 2 up, with light load and only about 25 litres on board.

Hope that helps

Neil

[Searider]

6000 sounds a little high. - Have a look in your manual to see what you should be pulling- probably a little less I would guess. My 90hp Mariner on a 5.4 Searider would pull about 5450 on a 20" Lazer II stainless prop - for just under 40kts. Pulled about the same rpm but less speed on a 19" Aluminium prop.

Suggest that you need to increase your pitch by 1-2". 200rpm per inch is often given as a rule of thumb.

I reckon you should be able to improve on your 30 knots by a few knots - probably at no extra fuel burn.

Secondhand prop(s) are the only way imho to decide what works best - or borrow them from the very helpful members on here!

Bought my stainless Lazer II for the Searider from a member on "Hotribs" - about £100 - was confident I could sell it for about the same if it was no good.

19" Lazer II on the Scorpion came from Pete 7 on here - works well and paid about half new retail cost. Works well and could have sold it for about the same price if no good.

Have fun with the boat and remember - even if a stainless propeller gives no performance advantage - at least it's shiny!

[Lets go boating]

I don't know if this will help but i have a 75 4/ on mine and i have got a 19pitch. this gives me 5500 revs at full throttle.

[118118]

hi guys, thanks for you input.


according to yamaha, the engine is not suposed to go higher than 5500 rpm.

althoug i like the idea of stainless i dont think its ideal for me as i launch/recover from a beach so dammage is enivitable i spose

Marther, what diameter prop are you using?

thanks

[Lets go boating]

Originally Posted by 118118

hi guys, thanks for you input.


according to yamaha, the engine is not suposed to go higher than 5500 rpm.

althoug i like the idea of stainless i dont think its ideal for me as i launch/recover from a beach so dammage is enivitable i spose

Marther, what diameter prop are you using?

thanks

The diameter of the cone is 4.5''
Altogether including the blades diameter is 13''

Hope this will help.

[118118]

ok, thanks,

i rhink i have a 13x 19 i can borrow, just seemed to me like it would be too big, but im gonna give it a go
thanks for your help