Reply
 
Thread Tools Search this Thread
 
Old 01 September 2014, 13:44   #1
Member
 
Projectile's Avatar
 
Country: Canada
Boat name: WB465
Make: Zodiac
Length: 4m +
Engine: 2013 ETEC 30
Join Date: Dec 2012
Posts: 254
Is my prop loose?

I'm going out on the water in about an hour, so I need a quick response to this one, please!

I just changed over to a 4-blade for my ETEC 30 and I noticed that after I'd tightened up the bolt and inserted the cotter pin, if I pulled outward on the prop (as if to try to remove it from the hub), it moved about a millimetre back and forth. You can see what I'm talking about in the video.

Is that normal or is it a problem?
Attached Files
__________________

__________________
Projectile is offline   Reply With Quote
Old 01 September 2014, 14:00   #2
Member
 
Projectile's Avatar
 
Country: Canada
Boat name: WB465
Make: Zodiac
Length: 4m +
Engine: 2013 ETEC 30
Join Date: Dec 2012
Posts: 254
Is my prop loose?

Sorry to repost over here, but I'm in need of an answer in a hurry as I plan to go out on the water in about an hour.

I just changed over to a 4-blade for my ETEC 30 and I noticed that after I'd tightened up the bolt and inserted the cotter pin, if I pulled outward on the prop (as if to try to remove it from the hub), it moved about a millimetre back and forth. You can see what I'm talking about in the video at the link below. If you crank up the volume, you can even hear a tap as it moves.

Is that normal or is it a problem?


Is my prop loose?
__________________

__________________
Projectile is offline   Reply With Quote
Old 01 September 2014, 14:06   #3
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
That looks normal to me mine does the same there should be a slight bit of play on the prop so don't worry. I'm sure someone else will be along to say the same.
__________________
Member of S.A.B.S. (Lancashire Division)
kerny is offline   Reply With Quote
Old 01 September 2014, 14:07   #4
Member
 
Country: UK - England
Town: Margate / Ramsgate
Boat name: Ballistic
Make: Ballistic
Length: 7m +
Engine: Yam HPDI 250
Join Date: Feb 2002
Posts: 2,835
That's called end float.

It's normal ***IF*** the prop shaft is moving too.

A loose prop would be moving back and forth on the shaft.

Different props need different fittings for different engines. I would suggest refitting your origional prop to see if same movement exists to be sure.
__________________
Daniel is offline   Reply With Quote
Old 01 September 2014, 14:08   #5
Member
 
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,020
Thats not right, take it off and see if the shaft does the same on it's own.

If it's ok fit the old prop and test it again, it may be that you need a spacer? it might be stuck to the old prop or your new one is not the correct size?

Don't use it like that, just in case.
__________________
whisper is offline   Reply With Quote
Old 01 September 2014, 14:15   #6
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
Quote:
Originally Posted by whisper View Post
Thats not right, take it off and see if the shaft does the same on it's own.

If it's ok fit the old prop and test it again, it may be that you need a spacer? it might be stuck to the old prop or your new one is not the correct size?

Don't use it like that, just in case.
I have just been out to check mine and it does exactly the same just a slight bit of play used it for 3 years and the only problem I had was the transom saddle breaking. I doubt if it was due to that though whisper.

I thought that props should have a millimeter or so play.
__________________
Member of S.A.B.S. (Lancashire Division)
kerny is offline   Reply With Quote
Old 01 September 2014, 14:29   #7
Member
 
henryfreston's Avatar
 
Country: UK - England
Town: Thornbury
Make: Avon Searider 4m
Length: 4m +
Engine: 50hp tohatsu tldi
Join Date: Sep 2012
Posts: 648
Had the same problem with mine.

The problem was the hub was too short for the shaft, so the prop didn't cover the splines (so when you put the washer and bolt on the non-'splined' part. This meant the washer didn't sit tight against the prop hub (therefore there was play in it)

Turned out I had missed out a spline washer, but you could just need a thicker one?

Might be talking crap, but if there is splines protruding from the the hub then the hub is too short and you need a second/thicker thrust washer.

Mine had quite a bit more play than 1mm though, about 3-4mm.

Excuse the poor explanation
__________________
henryfreston is offline   Reply With Quote
Old 01 September 2014, 14:31   #8
Member
 
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,020
If the shafts moving then its ok but I thought he just fitted a new prop, just think its worth checking stuff like the thrust washer rather than pushing on if he's unsure
__________________
whisper is offline   Reply With Quote
Old 01 September 2014, 14:34   #9
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: 7,596
RIBase
Looks a tad excessive to me. There should be the slightest amount of backlash, just enough to feel but not that obvious to the eye. Put the old prop back on & see if it's the same. As the others have said, you might have the wrong thrust washer or assembled the hub incorrectly.
__________________
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: See rule#5
Pikey Dave is offline   Reply With Quote
Old 01 September 2014, 14:37   #10
Member
 
Boatnomad's Avatar
 
Country: Ireland
Make: Zodiac Mk I
Length: 3m +
Engine: 15 hp Yam two stroke
Join Date: Feb 2012
Posts: 728
Quote:
Originally Posted by kerny View Post
That looks normal to me mine does the same there should be a slight bit of play on the prop so don't worry. I'm sure someone else will be along to say the same.
+1
__________________

__________________
Boatnomad 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 03:16.


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