Propeller suggestion needed- Yammi 115

[Fletcher-Andi]

Hello !

I have a Fletcher arrowshaft 199 Bravo with a 115 HP Yammi.
Now i drive a Laser2 with 20 " and turn it with trimming to 5.800 RPM @ 81-82 GPS kmH

I tested a laser 2 with 22" and turn it to 5200 RPMs i reach with it 79-80 kmh

So , my Problem is that i think i should go for a 21" Propeller , but Laser2 is not available in 21" for the smaller gearcase :-(

The Laser brochure says: good for hulls 15-18 ft , my boat has 19,7ft.

Does someone know , which props will be good for my boat to reach a little more Speed and that i can rev the enigne near 5.500 RPMs?

I put my gas tanks to the stern to get better lift - it works fine.

Here are 2 pics of my boat:




Thank you very much in advance!
Best regards!
Andi

[Burty]

Just get your 20" laser II worked up to a 21" cost you about £80

[Fletcher-Andi]

does it mean that the laser2 is the perfect prop?

Best regards!
Andi

[Burty]

dunno till you try a laser II will never be the fastest but its probably one of the best all rounders

[FrenchPhil]

For top speed i'd try a 25 cleaver & work from there, but you'd have to raise the motor. How high is the bullet from hull bottom ?

[Fletcher-Andi]

Hi!

thanks for replying!

sorry for not understanding everything

I think " dunno " means dont know?

My outboard is mounted as standard , no setback , no hydraulik jackplate. I want to take out the maximum with this " setup "

I have a small V4 gearcase , is the cleaver also available for the small V4 cases?

My engine is mounted in the last holes , that means 6 cm higher than standard.

When i drive with no trim , i rev 5000 , after trimming the engione i rev 5800-5900 and i get the max speed of 81-82 kmH.

do you have some hints , or do you think that is the max.?

By the way , my boat is " underpowered " , my brother has the same boat with 225 hp yammi , it goes like hell

around 113 kmH , he bought a 25 " cleaver and he will test it in future...


Thanks!

[Burty]

sorry, yes dunno means don't know

[cooolaii]

hi andy ,i dont think that speed aint that bad,considering the type of boat and horse power,i race in ocr and 19p with a 130 yami and we are pulling from 62 to 64 mph max,thats a lighter boat than yours and a racing set up,we are using lazers 22 ,23,yami props etc etc,ime using a raker 24 ,all this props perform similer to ur lazer,u can always make it go quicker if u raise the engine and prop test,your engine max rev is 5500 dont really matter if u going over as it will cut out if u get to rev limiter.yami 130 will rev to 6000max,and cut @ 6200 but we do cut off limiter,so take in concideration that ur about 20 kph slower than as,but u have a smaller engine and a heavier boat,thats all i can say.experts ere will guide u better than me .

[mell]

thank god your driving is better than your english
see you in torquay

[cooolaii]

hi mell and steve,hope alls well,boat looking nice congrat,ma english is f___ked,but u folks know what i mean,see u in torquey.

[Phil]

Mell do you ever do any work

[mell]

Originally posted by Phil
Mell do you ever do any work

[cooolaii]

hi steve,mel,did u sort boat out,any better on ur testing?

[mell]

boats going well in testing
just me and ali that need sorting out