Reply
 
Thread Tools Search this Thread
 
Old 29 June 2019, 02:38   #1
Member
 
Country: UK - England
Make: Zodiac Pro Open
Length: 5m +
Engine: Yamaha F100D
Join Date: Oct 2016
Posts: 67
Are stainless props worth it?

I have a Yam F100 with a standard prop, which is still in good condition.

I am not looking for ultimate performance, tend to cruise at around 4000rpm.

Is there any point in changing to a stainless prop?

Would there be a noticeable change in efficiency?
__________________

__________________
Gobuchul is offline   Reply With Quote
Old 29 June 2019, 03:13   #2
RIBnet supporter
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 9,088
RIBase
If youíre happy with your current setup, leave it be. Any increase in economy will be minor, 10% at best & will take a lot of usage to recoup the cost of the prop. If you were changing because you had a problem with your current setup then you could look at stainless. Thereís a school of thought that says an ally prop is kinder to the gearbox, Iím not convinced by that myself but itís out there.
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4:https://www.youtube.com/watch?v=unkIVvjZc9Y
Pikey Dave is offline   Reply With Quote
Old 06 July 2019, 10:26   #3
Member
 
Locozodiac's Avatar
 
Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider 450 Rib
Length: 4m +
Engine: Tohatsu 5/18/30 HP
Join Date: Sep 2007
Posts: 1,826
Alum vrs SS Props.-

Quote:
Originally Posted by Gobuchul View Post
I have a Yam F100 with a standard prop, which is still in good condition.

I am not looking for ultimate performance, tend to cruise at around 4000rpm.

Is there any point in changing to a stainless prop?

Would there be a noticeable change in efficiency?
Will need to determine firstly if current alum prop is an excellent water performer ?

-Need to know which is the min-max wot rpm range factory state for said motor.
-Max wot revs achieved on flat water cond "as loaded" (2)
-Check motor is revving at which side of the min-max wot rpm range.
-Will need a tachometer to dial exact (2) ear sound method is nada bueno!!

There's 2 top running options :

-If motor runs at middle wot range will achieve top end speed increase along slight hole shot decrease.
-If motor runs to max wot range will achieve top hole shot along slight top end speed decrease.

Which of both boating scenarios you'll like best for your particular combo ? this is a very personal choice. For me, max wot rpm as loaded while cruising nicely at 3/4 throttle (4.0-4.5 K RPM)

Don't go to SS props are costly, nothing that a 3 blade alum won't cure if pitched correctly to suit any of both mentioned scenarios.

Happy Boating
__________________
Locozodiac is offline   Reply With Quote
Old 06 July 2019, 15:07   #4
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Mercury
Length: 3m +
Engine: Suzuki Outboard/25/4
MMSI: 235074042
Join Date: Oct 2011
Posts: 5,240
When I had the last rib I had an Ali and ss of same diamentions plus a ss with 1 inch increase in pitch on all the tests I did with the Ali and ss the Ali came out best in terms of top end and no noticeable change in hole shot or response that's OMO but I won't buy a ss prop to get 5% -10% increase as claimed for any other engine because my style of boating doesn't require it.
__________________
jeffstevens763@g is offline   Reply With Quote
Old 08 July 2019, 04:44   #5
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 852
RIBase
For most boats you won't notice any difference, for performance orientated boats it's 100% worthwhile
__________________
Roflhat is offline   Reply With Quote
Old 08 July 2019, 16:59   #6
Member
 
gtflash's Avatar
 
Country: UK - England
Town: southampton
Boat name: TOP CAT 2
Make: Scorpion 8.1
Length: 8m +
Engine: 250hp HO
Join Date: Aug 2003
Posts: 1,470
Quote:
Originally Posted by Roflhat View Post
For most boats you won't notice any difference, for performance orientated boats it's 100% worthwhile
What he said ^^^^^

Iíd have nothing but stainless as I been searching for more speed. But they cost more to buy, repair, replace and transfer more shock to gearbox in an impact.
__________________

__________________
gtflash is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:33.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.