Reply
 
Thread Tools Search this Thread
 
Old 24 February 2008, 15:01   #1
Member
 
Country: UK - England
Town: Staffs
Make: Yam FX160 HO
Length: 3m +
Engine: Flippin Fast
Join Date: Feb 2006
Posts: 131
Prop Play

My Humber 5.5mtr Destroyer is just about ready for her maiden voyage, however I have one slight hang up. I have a new laser 11 20" stainless prop fitted to a Mercury Optimax 115. The stepped brass washer has been fitted first, followed by the prop with the flo torque hub assembly, and finally secured with the tab washer and nut.

Everything has been fitted correctly and well tightened up, but there seems to be a little bit of end float and slight side play in the prop, I checked this against my mates prop and found he has some end float but no side play, and wondered if this is normal with the flo torque hub assembly.
__________________

__________________
waverunner is offline   Reply With Quote
Old 24 February 2008, 15:11   #2
RIBnet supporter
 
Ian M's Avatar
 
Country: UK - England
Town: New Milton
Boat name: Jianna
Make: Osprey
Length: 6m +
Engine: 200 E-TEC
MMSI: 235076954
Join Date: Sep 2004
Posts: 1,933
I would get it checked out. I had similar play with the flo torq hub on a 2005 90 Optimax. Hub was knackered with very few hours on it!
__________________
Ian

Dust creation specialist
Ian M is offline   Reply With Quote
Old 24 February 2008, 15:13   #3
Member
 
Country: UK - England
Town: Staffs
Make: Yam FX160 HO
Length: 3m +
Engine: Flippin Fast
Join Date: Feb 2006
Posts: 131
It shouldn't be knackered everything is new!!
__________________
waverunner is offline   Reply With Quote
Old 24 February 2008, 15:24   #4
Member
 
Country: Other
Town: San Carlos, Mexico
Boat name: INDE
Make: LOMAC 730
Length: 7m +
Engine: 200 Merc.
MMSI: Please press 1
Join Date: May 2006
Posts: 1,688
Send a message via Skype™ to Limey Linda
Quote:
Originally Posted by waverunner View Post
It shouldn't be knackered everything is new!!
Something is wrong. I have just fitted a flowtorque Mirage prop. and just checked it. No side play. The stepped washer should have a tapered bore that matches the shaft so no side play is possible. Worth checking out.
__________________
Running around like a head with it's chicken cut off.
Limey Linda is offline   Reply With Quote
Old 24 February 2008, 15:53   #5
Member
 
Country: UK - England
Town: Staffs
Make: Yam FX160 HO
Length: 3m +
Engine: Flippin Fast
Join Date: Feb 2006
Posts: 131
I checked the tapered bore in the stepped washer and it fits fine, really good fit on the shaft. I can only think that when the nut is tightened its not fully pulling everything home for some reason. The side play is only slight but my thoughts are there should not be any play at all.
__________________
waverunner is offline   Reply With Quote
Old 24 February 2008, 16:13   #6
Member
 
Country: Other
Town: San Carlos, Mexico
Boat name: INDE
Make: LOMAC 730
Length: 7m +
Engine: 200 Merc.
MMSI: Please press 1
Join Date: May 2006
Posts: 1,688
Send a message via Skype™ to Limey Linda
Quote:
Originally Posted by waverunner View Post
I checked the tapered bore in the stepped washer and it fits fine, really good fit on the shaft. I can only think that when the nut is tightened its not fully pulling everything home for some reason. The side play is only slight but my thoughts are there should not be any play at all.
Your should have a castellated brass washer that goes behind the tab washer: it also has a step in it. make sure it is seated properly and thus allowing the nut to force the prop. and the rear tapered washer fully on to the shaft taper. The nut should hold the prop./rear washer hard onto the taper.
__________________
Running around like a head with it's chicken cut off.
Limey Linda is offline   Reply With Quote
Old 24 February 2008, 16:15   #7
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Nothing should move except for turning around

Are you sure it's not the prop shaft moving back and forth a little?
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 24 February 2008, 16:23   #8
Member
 
Country: Other
Town: San Carlos, Mexico
Boat name: INDE
Make: LOMAC 730
Length: 7m +
Engine: 200 Merc.
MMSI: Please press 1
Join Date: May 2006
Posts: 1,688
Send a message via Skype™ to Limey Linda
Quote:
Originally Posted by Hightower View Post
Nothing should move except for turning around

Are you sure it's not the prop shaft moving back and forth a little?
Good point, if the prop. shaft itself is moving then the bearings are knackered. Is it a new engine?
__________________
Running around like a head with it's chicken cut off.
Limey Linda is offline   Reply With Quote
Old 24 February 2008, 16:51   #9
Member
 
Country: UK - England
Town: Staffs
Make: Yam FX160 HO
Length: 3m +
Engine: Flippin Fast
Join Date: Feb 2006
Posts: 131
Quote:
Originally Posted by Limey Linda View Post
Good point, if the prop. shaft itself is moving then the bearings are knackered. Is it a new engine?
Its a new engine, with absolutely no play in the prop shaft. Its looking as though the brass castellated splined spacer that was supplied with the engine is too long. I will ,try a shorter one tommorow.
__________________
waverunner is offline   Reply With Quote
Old 24 February 2008, 16:57   #10
Member
 
Country: UK - England
Town: Herne Bay
Boat name: Rotary Rescue
Make: Pacific 22
Length: 6m +
Engine: Mermaid 160
MMSI: 235021725
Join Date: Nov 2003
Posts: 328
prop

What have you torqued it up to? not that it would have a great deal of effect on it
Paul
__________________

__________________
Paul F 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 01:42.


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