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| Composite props for rivers/tidal areas? |
| Author |
Message |
    
RANDY WYLIE
New member
Username: ditdot
Post Number: 1
Registered: 07-2009
| | Posted on Wednesday, July 29, 2009 - 07:04 pm: | 
|
I need a prop for YAMA F90 on a G3 1860sc alumn. curious about composite props w/replaceable blades for N.C. rivers and sounds,anyone have expereince w/these props or an 805lb shallow v johnboat w/ a 400 lb 4 stroke!?!? I have a 13.25x17 alum.thinking of a 13+/-by19 or 21 alum 3 or 4 blade to help w falling off plane to soon.maybe a hydrofin. Boat used for fishn and huntn sometimes heavy loads, cruise @ 30/35mph? about 3/4 throttle now.I appreciate any advice anyone has to my questions thanks,Randy |
makomark
Senior Member
Username: makomark
Post Number: 1019
Registered: 09-2008
| | Posted on Thursday, July 30, 2009 - 10:18 pm: |
|
Randy:
you may want too ask the prop question on the yamaha page. I haven't had an outboard for years but do remember when composite props came out - they made reliable lightweight spares and performed ok. didn't know they have progressed to replaceable blades.
If it falls off plane really easy, I'd be inclined to back off the pitch vs adding to it. That will take some of the load off the motor and make it easier to push the heavy load. It will make the negine last longer, too.
Make sure the prop is sized to get into the WOT band, suggested by the factory, with a full normal load. If you change normal loads with the season (or sport) you may want to consider two props as well - one for each season. |
charles harris
Advanced Member
Username: cehmass
Post Number: 624
Registered: 09-2007
| | Posted on Friday, July 31, 2009 - 10:03 am: |
|
i had a com prop for a season or two,they can be worth the money,you have to weigh out your pros/cons,its good ,the prop breaks if it hits something/no other damage happens to drive,its bad if you do it frequently.and yes if you just clip something(logs mud rocks etc)it does break
a little easier than you would think,on the other hand aluminumn/stainless would shake it off
and you keep going on your way,with minamal problems,remember steel /alum can be repaired,plastic is a throw away item |
RANDY WYLIE
New member
Username: ditdot
Post Number: 2
Registered: 07-2009
| | Posted on Friday, July 31, 2009 - 05:09 pm: |
|
thanks,I should have said composites w replacement blades.$60 for 2? spares I think I saw. blades slide into the hub.anyway I am leaning towards an alum. 4 blade,hoping for more lift at the stern as i have heard they provide and steering improvement.12.5 to 13.25 by 17 as I have a 13" 1/4x17 3 blade now.or i could just try to trade the 03 4stroke for a 2stroke, 140+/- lbs less!Is there a forum just for props? |
charles harris
Advanced Member
Username: cehmass
Post Number: 625
Registered: 09-2007
| | Posted on Friday, July 31, 2009 - 07:23 pm: |
|
i have seen those kind of props/any 4 blade will give better lift/performance,pretty sure you need to move up one size with a 4 from a 3 blade.i attached a photo of what was left of mine after trying to plane up in the muck,it was a busy weekend at the lake and couldnt get out fast enough. |
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