Reply
 
Thread Tools Search this Thread
 
Old 11 July 2012, 16:41   #1
Member
 
Country: Finland
Town: Helsinki
Boat name: SR 5.4
Make: Avon
Length: 4m +
Engine: Toh1 3,5 Yam 90/2S
Join Date: Oct 2009
Posts: 896
Strange shape of port side spray rail on SR 5.4?

I am in the middle in the brilliantly fun task of removing antifoul paint from my SR..Several layers of antifoul, primer and than also 2 diferent colours of topcoat paint....

Otherwise the original gel coat is in good condition. Here some pictures of the lover port side spray rail. It has totally different shape than the others, its not straight. I have seen this hull from the inside, it does not look like a bad repair. And its not only filler, its grp beneath when removing the surface. The bottom is straigh, that is not the issue, its only the end of this spray rail that is shaped strangely.

Is this a "feature" ( possible to counter the torque from the engine) or something else?
I think have seen the same on a few pictures here on ribnet but not on all SR( maybe a Navy speck feature?)
Attached Thumbnails
Click image for larger version

Name:	IMG_0473.jpg
Views:	192
Size:	99.2 KB
ID:	70208   Click image for larger version

Name:	IMG_0474.jpg
Views:	190
Size:	63.9 KB
ID:	70209   Click image for larger version

Name:	IMG_0477.jpg
Views:	212
Size:	80.4 KB
ID:	70210  
__________________

__________________
fun on a boat is inversely proportional to size...sort of anyway
C-NUMB is offline   Reply With Quote
Old 11 July 2012, 17:34   #2
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
I'd guess someone went at it with some really aggressive sandpaper.

How far along does the curve go? Shouldn't be too bad to take it down to the resin and build it back up.

jky
__________________

__________________
jyasaki is offline   Reply With Quote
Old 12 July 2012, 01:03   #3
Member
 
Country: Finland
Town: Helsinki
Boat name: SR 5.4
Make: Avon
Length: 4m +
Engine: Toh1 3,5 Yam 90/2S
Join Date: Oct 2009
Posts: 896
The "curve" is not longer than 30 cm and the spray rail gets wider in the end, the rest of the rail is identical with the starboard side rail. The issue is not that the rail is sanded down, more like the end of it is enlarged....It looks very much like it would been that way from the beginning, or at least mad by purpose.

Other thoughts here?
__________________
fun on a boat is inversely proportional to size...sort of anyway
C-NUMB is offline   Reply With Quote
Old 12 July 2012, 13:44   #4
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
I seem to remember an old thread about this. Is that commonly called a "Hooked" hull and is generally considered a bad thing?
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 12 July 2012, 13:55   #5
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
I've searched the archives and can't really give you anything from the forum, but Googling brings up anything from a manufacturing fault to rotten internals and unsupported boat on trailer. I would have thought that you'd have found some cracks somewhere if it had "sagged" on the trailer.
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 12 July 2012, 14:53   #6
RIBnet admin team
 
willk's Avatar
 
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 12,924
RIBase
Nothing under "Leeway"?
__________________
willk is offline   Reply With Quote
Old 13 July 2012, 02:59   #7
Member
 
Cookee's Avatar
 
Country: UK - England
Town: Salcombe, Devon, UK
Boat name: BananaShark
Make: BananaShark
Length: 10m +
Engine: 2xYanmar 260 diesels
Join Date: Mar 2003
Posts: 4,225
Quote:
Originally Posted by Hightower View Post
I seem to remember an old thread about this. Is that commonly called a "Hooked" hull and is generally considered a bad thing?
A hook generally refers to a running surface rather than a spray rail - it would effectively "pull" down that side of the boat but I doubt it's an intentional shape. Some filler on that would straighten it up and allow you to see if it makes a difference.
__________________
Cookee
Originally Posted by Zippy
When a boat looks that good who needs tubes!!!
Cookee is offline   Reply With Quote
Old 13 July 2012, 03:36   #8
Member
 
Country: Finland
Town: Helsinki
Boat name: SR 5.4
Make: Avon
Length: 4m +
Engine: Toh1 3,5 Yam 90/2S
Join Date: Oct 2009
Posts: 896
Thanks for comments. No, hull is not hooked, running surfaces are straigt as can be, its only the spray rail that has this shape. I think i have seen this shape on a picture here on another SR 5.4 but cant remember the thread. It was not related to this topic anyway.

This "issue" has strangely litle impact, geting pretty good speed out of here and handling also. Think need to take the agle grinder out....but still would like to know why its its this way?
__________________
fun on a boat is inversely proportional to size...sort of anyway
C-NUMB is offline   Reply With Quote
Old 13 July 2012, 04:04   #9
Member
 
Country: Finland
Town: Helsinki
Boat name: SR 5.4
Make: Avon
Length: 4m +
Engine: Toh1 3,5 Yam 90/2S
Join Date: Oct 2009
Posts: 896
Look carefully at the picture in post number 6 on this thread:

Attention all AVON-pro's; What kind of RIB I got here...?

It looks like the mentioned spray rail is not straight here either, compare to the running surface?
__________________
fun on a boat is inversely proportional to size...sort of anyway
C-NUMB is offline   Reply With Quote
Old 13 July 2012, 05:55   #10
Trade member
 
Dry Run's Avatar
 
Country: UK - England
Town: portsmouth
Boat name: Hullabaloo
Make: Humber
Length: 8m +
Engine: 225 Optimax
Join Date: Mar 2011
Posts: 655
RIBase
Here's a pic of a 2008 "MOD Spec" SR 5.4. It looks to me that the inner port spray rail is more flered than the starboard one (albeit in a different way to the OP's)?
Attached Thumbnails
Click image for larger version

Name:	DSC02752.jpg
Views:	236
Size:	84.4 KB
ID:	70251  
Dry Run 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 21:20.


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