Reply
 
Thread Tools Search this Thread
 
Old 23 April 2013, 17:28   #1
Member
 
Country: UK - England
Town: Blackpool
Make: Bombard Aerotec
Length: 3m +
Engine: Yam 15fmh
Join Date: May 2011
Posts: 26
Prop Blade Damage - Can this damage the engine if used?

I look after the safety boats for a sailing club. One of those boats is about a 4.5 meter rib with a 40hp 2 stroke Yamaha engine from around 2005.

Last weekend I noticed that somebody using the boat must have been in the shallows too much which has resulted in damage to the prop from hitting the lake bed. All three blades are fairly badly dented with one of the blades with a chunk or two missing.

I tested the boat out after the issue was noted and don't think the performance is effected to much but there was a slight vibration through the wheel at speed.

The question is - is this likely to cause wear/damage etc in the engine itself and would the more experienced of you recommend a replacement prop? It is a safety boat afterall.

Thanks
__________________

__________________
MattB is offline   Reply With Quote
Old 23 April 2013, 17:44   #2
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
If it's vibrating, get it fixed. It'll goose the gearbox eventually.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is online now   Reply With Quote
Old 23 April 2013, 17:44   #3
Member
 
Bigmuz7's Avatar
 
Country: UK - Scotland
Town: Glasgow
Boat name: stramash
Make: Tornado
Length: 5m +
Engine: Etec 90
Join Date: Feb 2006
Posts: 5,068
you could argue about extra gearbox wear etc.. but not likely to be an issue of an engine that size .. however most of us like to err on the side of caution, and would get it fixed. Theres a few companies who will do it, but i havent used any in ages, others will give you the latest on whos best.. a pic would be good though so as to see if it is dooable
__________________
Bigmuz7 is offline   Reply With Quote
Old 23 April 2013, 17:49   #4
Member
 
kerny's Avatar
 
Country: UK - England
Town: Ashton-under-Lyne Lancs
Boat name: IMOGEN
Make: Air-Craft 5.4
Length: 5m +
Engine: Etec 60
MMSI: 235087492
Join Date: May 2010
Posts: 7,040
RIBase
Send a message via Skype™ to kerny
Crowther Marine - Propeller and Stern Gear Specialist


http://www.steeldevelopments.net/
__________________
Member of S.A.B.S. (Lancashire Division)
kerny is offline   Reply With Quote
Old 24 April 2013, 04:07   #5
Member
 
Ribochet's Avatar
 
Country: UK - N Ireland
Town: Rostrevor
Boat name: Ricochet
Make: Redbay
Length: 7m +
Engine: Twin F115 Yams
MMSI: 235083269
Join Date: Oct 2011
Posts: 911
Quote:
Originally Posted by MattB View Post
The question is - is this likely to cause wear/damage etc in the engine itself and would the more experienced of you recommend a replacement prop? It is a safety boat afterall.
Without a doubt change it

BTW what do you mean by "It is a safety boat after all" in relation to this post.
__________________
Maximum Preparation - Maximum Fun
Ribochet is offline   Reply With Quote
Old 24 April 2013, 04:26   #6
AJ.
RIBnet supporter
 
AJ.'s Avatar
 
Country: UK - England
Town: Warwickshire
Boat name: Impulse
Make: Ribcraft
Length: 5m +
Engine: Suzuki 140
Join Date: Sep 2011
Posts: 1,020
Quote:
Originally Posted by Ribochet View Post
Without a doubt change it

BTW what do you mean by "It is a safety boat after all" in relation to this post.
My thoughts exactly if it is a safety boat so there to pick up people if they go into the drink, surely keeping this boat in tip top condition is a priority. Leaving the prop damaged which could lead to a damaged gearbox and sods law when you need to pick some one up out of the water is not a good place to be.
__________________
AJ. is offline   Reply With Quote
Old 24 April 2013, 08:20   #7
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
As others have stated, get the prop repaired or replaced. The Vibration will put the bearings, drive gear under undue stresses and probably bugger up the seals too which will let water in to the gearbox.
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 24 April 2013, 09:05   #8
Member
 
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Quote:
Originally Posted by Hightower View Post
As others have stated, get the prop repaired or replaced. The Vibration will put the bearings, drive gear under undue stresses and probably bugger up the seals too which will let water in to the gearbox.

^^
What he said. Take this advice.

__________________
Downhilldai is offline   Reply With Quote
Old 24 April 2013, 11:14   #9
Member
 
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,610
+1

Unless you are compacting a few tons of type 1, a Beach Boys fan or a woman, vibrations are genrally a bad thing.....
__________________
9D280 is offline   Reply With Quote
Old 24 April 2013, 11:43   #10
Member
 
Country: UK - England
Town: macclessfield
Boat name: Reach Out
Make: Quicksilver
Length: 4m +
Engine: 30hp Tohatsu EFI
Join Date: Aug 2010
Posts: 301
Take it off and hammer it carefully to straighten it, it will move very easy if aluminium... then consider a replacement if chunks missing or chasing performance.....
__________________

__________________
simsy 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 06:46.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.