Reply
 
Thread Tools Search this Thread
 
Old 07 April 2011, 04:40   #1
Member
 
Country: UK - England
Town: Poole
Boat name: Exodus
Make: Tohatsu
Length: 7m +
Engine: Evinrude 150
Join Date: May 2007
Posts: 275
Adding additional rollers

I've been considering selling the rib for a while but keep coming back to why - and it's partly that getting the rib on and off the trailer simply isn't that easy. So thought process number one goes something like - Make it easier to launch and recover.
To that end I want to add more rollers under the boat to make it move more easily. Currently I have 16 rollers in pairs under the aft end and 8 under the pointy end. They are fitted to swinging bars on a roller coaster.

I'd like to significantly increase this but am struggling to source a supply of suitable galvanised mounting brackets. Specifically I'm looking for a Bar that will take 6 x 2 rollers, one for each side that'll give me 24 at the back, I can then move the existing 16 to the front to increase the total from 24 to 40.
I've tried RM trailers and Indespension and neither can help me, Hayling Island Trailers suggested buying a new trailer but that's a bit out of my price range right now.
There are a couple of pictures I've tried to upload to show what I'm looking for, all help appreciated.
ItB
Attached Thumbnails
Click image for larger version

Name:	Picture1.png
Views:	181
Size:	288.8 KB
ID:	58179  
Attached Images
 
__________________

__________________
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former --- Albert Einstein
Into The Blue is offline   Reply With Quote
Old 07 April 2011, 05:46   #2
Member
 
Kernow Buoy's Avatar
 
Country: UK - England
Town: Cornwall
Length: no boat
Join Date: Oct 2004
Posts: 1,518
Might be worth giving gullwing a call, pretty sure they sell their 'roller ramp' assembly as a seperate item.
http://www.gullwingtrailers.co.uk/pr-kittiwake.html
__________________

__________________
Kernow Buoy is offline   Reply With Quote
Old 07 April 2011, 05:57   #3
RIBnet supporter
 
bedajim's Avatar
 
Country: UK - England
Town: Cambs/Northants
Length: no boat
Join Date: May 2006
Posts: 2,499
Hi

These people have been very helpful in the past

http://www.sbstrailers.co.uk/accessories.asp

Jim
__________________
bedajim is offline   Reply With Quote
Old 07 April 2011, 07:56   #4
RIBnet supporter
 
Erin's Avatar
 
Country: UK - Channel Islands
Town: A large rock
Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
Join Date: May 2004
Posts: 2,830
Do extra rollers make much of a difference. Is it not just the same weight spread over more rollers with greater friction?
Erin is offline   Reply With Quote
Old 07 April 2011, 08:39   #5
Member
 
Country: UK - England
Town: Poole
Boat name: Exodus
Make: Tohatsu
Length: 7m +
Engine: Evinrude 150
Join Date: May 2007
Posts: 275
Erin, Not sure and I guess if others have experience than i'd appreciate their views. My plan is based on experience in warehousing, more rollers, lower load per roller = easier to push off. I think the load on the existing rollers is too high and is deforming them to the point of lock up.
When unloaded they spin freely.
Itb
__________________
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former --- Albert Einstein
Into The Blue is offline   Reply With Quote
Old 07 April 2011, 11:55   #6
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Can you post a pic of your boat on trailer please Steve. With a multi roller swing arm type setup like you've said you've got it should be a piece of cake unless there is something fundamentally wrong.
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 07 April 2011, 17:23   #7
Member
 
Country: UK - England
Town: Poole
Boat name: Exodus
Make: Tohatsu
Length: 7m +
Engine: Evinrude 150
Join Date: May 2007
Posts: 275
Will try to get something posted when I can get to my pc. Currently decorating so it's hiding under dust covers
__________________
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former --- Albert Einstein
Into The Blue is offline   Reply With Quote
Old 07 April 2011, 19:44   #8
Member
 
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,688
Quote:
Originally Posted by Into The Blue View Post
My plan is based on experience in warehousing, more rollers, lower load per roller = easier to push off. I think the load on the existing rollers is too high and is deforming them to the point of lock up.
When unloaded they spin freely.
Itb
I have the same observation with the keel rollers on my trailer. Because the boat only sits on 3 of them the load per roller squishes the roller right down and means you need loads of power to back off the trailer, to the extent it's nearly as hard to "unstick" the boat as my old all-bunk trailer used to be.
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...

Sent from my Computer, using a keyboard and mouse
BogMonster is offline   Reply With Quote
Old 08 April 2011, 16:36   #9
Member
 
Country: UK - England
Town: Poole
Boat name: Exodus
Make: Tohatsu
Length: 7m +
Engine: Evinrude 150
Join Date: May 2007
Posts: 275
Would you think that more rollers might solve it?
SBS have quoted 40 per side for the roller supports which sounds reasonable but I could do with more views as to others that have had the same reluctance for the rib to roll off the trailer.
__________________
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former --- Albert Einstein
Into The Blue is offline   Reply With Quote
Old 08 April 2011, 18:21   #10
Member
 
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,688
Don't know - maybe. The keel roller brackets are welded on mine - not sure you could easily add more without putting a spine down the middle of the trailer and that would bugger up my galvanising.
__________________

__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...

Sent from my Computer, using a keyboard and mouse
BogMonster 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 15:25.


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