Wanted to borrow Yamaha 4 blade 18inch Prop

I know its a long shot....but Is there anyone that I can borrow a Yamaha 4 blade 18inch Prop for a boat test.

The motor is a 2006 250hp yamaha 4 stroke

Perth Area

Thanks Dougie 0417961223

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Want to make someone mad... tell a lie! Want to get the world upset... tell the TRUTH !

Dougie


Brucesta's picture

Posts: 1721

Date Joined: 29/05/09

perth? i have one i Karratha

Fri, 2015-02-13 09:31

perth? i have one i Karratha

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Las Vegas - Rolling the dice and trying your luck. 1M+ Barra summer target. 100kg Black Marlin winter target

wangler's picture

Posts: 607

Date Joined: 26/04/08

Are you using it

Fri, 2015-02-13 09:59

and if so how does it compare to a 3 blade 17" prop ?

ta

____________________________________________________________________________

Want to make someone mad... tell a lie! Want to get the world upset... tell the TRUTH !

Dougie

Brucesta's picture

Posts: 1721

Date Joined: 29/05/09

 I run a 19 inch 3 blade on

Sat, 2015-02-14 18:42

 I run a 19 inch 3 blade on my 200hp, it can struggle to get up out of the hole but I cruise at 26 knots at 4000rpm  at 28l/h or 31 knots at 4500rpm at 42 l/h maxed out at 5600rpm and 41 knots.

the 4 blade is 14 1/8 18 inch jobbie from SOLAS I got from here at a good price, I can't run as fast and I average 25 knots at 4200 using 32l/h and max out at 38 knots but I plane quicker, I hold 16 knots on the plane and it's just a bit nicer to use.

i use it during comps as it has a nice troll speed at 1900 rpm and it makes the boat just a bit nicer to drive coming on or off the throttle especially chasing billfish around. It came off a Yamaha 225 and a Haines hunter 680 so similar in a way to my boat.

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Las Vegas - Rolling the dice and trying your luck. 1M+ Barra summer target. 100kg Black Marlin winter target

wangler's picture

Posts: 607

Date Joined: 26/04/08

I was going to try

Mon, 2015-02-16 09:00

the 19" 3 blade as well, and your figures seem about right to what I want, but have been advised to use the Solas 18" 4 blade......I'm not too worried about doing 40knts, but need the hole shot and economy as doing 140 - 200km's round trips - "25 knots at 4200 using 32l/h and max out at 38 knots" is what I will aim for on a 3 ton boat

ta

____________________________________________________________________________

Want to make someone mad... tell a lie! Want to get the world upset... tell the TRUTH !

Dougie

Kal's picture

Posts: 160

Date Joined: 30/04/07

 Running a 2012 200hp 4

Mon, 2015-02-23 21:18

 Running a 2012 200hp 4 stroke yammie on a 6.2 m glass boat that weighs 2.8 ton on trailer,

Ive got a 4 blade 17 pitch you can borrow 

my findings are 

started of with a 3 blade 19p stainless 5400 rpm 41.7 knots gps speed 

put a 18p 4 blade solas revs stayed the same at wot 5400 rpm 41.3 knots gps speed picked up hole punch and mid range punch

put a 17 pitch 4 blade on got 41 knots at 5800 better hole punch and troll economy and cruise speed 30kts cruise at 3800 

16p 4 blade 39 knots at  6200rpm hole punch is great, cruise speed dropped  30 knts at 4300 and fuel increased