Reply
 
Thread Tools Search this Thread
 
Old 17 March 2017, 11:06   #1
Member
 
Country: UK - England
Town: Dorset
Boat name: Seabadger
Make: Ribcraft
Length: 5m +
Engine: DF140
MMSI: -
Join Date: May 2010
Posts: 497
Why GRP and not stainless?

Last year I made a bench seat for my rib using plywood and suitable cushions.
It was rough and ready but worked really well, was strong and comfortable. Its easily removable from the boat via use of M10 bolts and stainless threaded inserts permanently fixed to the deck. See attached picture of the old bench.

I'm now looking to make up a stainless steel frame for the bench seat to replace the ply version.

Before I commit to shelling out a lump of money to a local fabricator does anyone have any comments or suggestions why I shouldn't have a stainless framed bench seat? Most rib bench seats are GRP with perhaps only stainless back rest rails and arm rests.

I'm not sure if I'm missing something obvious?
Attached Thumbnails
Click image for larger version

Name:	20170306_122520.jpg
Views:	106
Size:	118.0 KB
ID:	118531  
__________________

__________________
diver 1 is offline   Reply With Quote
Old 17 March 2017, 11:16   #2
Member
 
falcon0310's Avatar
 
Country: UK - England
Town: surrey
Boat name: el nino
Make: tornado humber
Length: 7m +
Engine: outboards
Join Date: Jun 2009
Posts: 958
the only reason is storage,
__________________

__________________
we all mad
falcon0310 is offline   Reply With Quote
Old 17 March 2017, 12:03   #3
Member
 
Maximus's Avatar
 
Country: UK - England
Town: Wild West
Boat name: No Boat
Make: No Boat
Length: under 3m
Join Date: Jan 2008
Posts: 4,265
Send a message via AIM to Maximus
Quote:
Originally Posted by diver 1 View Post
Last year I made a bench seat for my rib using plywood and suitable cushions.
It was rough and ready but worked really well, was strong and comfortable. Its easily removable from the boat via use of M10 bolts and stainless threaded inserts permanently fixed to the deck. See attached picture of the old bench.

I'm now looking to make up a stainless steel frame for the bench seat to replace the ply version.

Before I commit to shelling out a lump of money to a local fabricator does anyone have any comments or suggestions why I shouldn't have a stainless framed bench seat? Most rib bench seats are GRP with perhaps only stainless back rest rails and arm rests.

I'm not sure if I'm missing something obvious?
If you mean replacing all the Ply with Stainless..I'll tell you why people use GRP..

..Cost!...And Weight!..a "one off" custom built piece of kit will always be more expensive than ready made moulded and easily replicated GRP seat.
In terms of weight to strength and maintenance you won't beat GRP...if it's done right.
It tends to look better if all your seats ect are made from the same materials too
__________________
A clever Man learns by his mistakes..
A Wise Man learns by other people's!

The Road to HELL ..is Paved with "Good inventions!"
Maximus is offline   Reply With Quote
Old 17 March 2017, 12:39   #4
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Mercury
Length: 3m +
Engine: Suzuki Outboard/25/4
MMSI: 235074042
Join Date: Oct 2011
Posts: 3,537
I don't know what the cost would be for your stainless work plus apolstrey or how many can sit on your seat, but if you look on warrior boats web site you can buy two bucket seats with fibreglass bases for £350 each as an alternative.
__________________
jeffstevens763@g is offline   Reply With Quote
Old 17 March 2017, 16:14   #5
Member
 
Country: UK - England
Town: Dorset
Boat name: Seabadger
Make: Ribcraft
Length: 5m +
Engine: DF140
MMSI: -
Join Date: May 2010
Posts: 497
Thanks for the replies -

Storage - boxes with hinged perhaps lockable lids are useful - but equally under my bench I can slide in coolboxes or builders tubs with fish / bait etc or two scuba sets.

Cost - I can re- use the cushions I already made for the plywood bench - all in including custom cut foam, bases, waterproof durable covering and stainless staples they cost me £48. The best fabrication price for my current frame design in mirror polished finish is around £650 which doesn't seem too bad for seating that will take 3 pax.

Weight - the 32mm stainless tubing, brackets and fixings should come in at around 16-18kg plus cushions at perhaps 4-5kg each. I'm sure this wouldn't be far different to a typical GRP bench box type seat?
__________________
diver 1 is offline   Reply With Quote
Old 17 March 2017, 16:38   #6
Member
 
Maximus's Avatar
 
Country: UK - England
Town: Wild West
Boat name: No Boat
Make: No Boat
Length: under 3m
Join Date: Jan 2008
Posts: 4,265
Send a message via AIM to Maximus
You do see complete used and or surplus Bench seats from time to time...which can be really good value.
__________________
A clever Man learns by his mistakes..
A Wise Man learns by other people's!

The Road to HELL ..is Paved with "Good inventions!"
Maximus is offline   Reply With Quote
Old 17 March 2017, 16:44   #7
Member
 
Country: UK - England
Town: Dorset
Boat name: Seabadger
Make: Ribcraft
Length: 5m +
Engine: DF140
MMSI: -
Join Date: May 2010
Posts: 497
Yeah I've been on the lookout - would be ideal solution - anyone have one for sale?
__________________
diver 1 is offline   Reply With Quote
Old 18 March 2017, 04:03   #8
Member
 
Phil M's Avatar
 
Country: UK - England
Town: Whitehaven
Boat name: Pegasus
Make: Zodiac Pro 530
Length: 5m +
Engine: 115hp Merc 4st
Join Date: Oct 2012
Posts: 336
I'd have no problems with a stainless frame. I have a rather unique bottle track that also has an easily removable to cushion so works for family trips and dive trips. Have you considered removable cushions or additional tie down points on your frame. With a little thought you could make something really useful and adaptable.

Phil M
__________________
Phil M is offline   Reply With Quote
Old 18 March 2017, 04:57   #9
Member
 
Country: UK - England
Town: Dorset
Boat name: Seabadger
Make: Ribcraft
Length: 5m +
Engine: DF140
MMSI: -
Join Date: May 2010
Posts: 497
Hi Phil, yes a little bit. I've seen another ribcraft with the bottle rack convertible into a bench seat. Trouble is my existing bottle rack is quite small - only takes 4 sets - which is fine - but as a seat would only take 2 pax. I'd like to maximise the size of the bench to the internal width of the boat ideally to seat 3 comfortably.

Any chance you could send me pics of your set up?
__________________
diver 1 is offline   Reply With Quote
Old 18 March 2017, 05:59   #10
Member
 
Phil M's Avatar
 
Country: UK - England
Town: Whitehaven
Boat name: Pegasus
Make: Zodiac Pro 530
Length: 5m +
Engine: 115hp Merc 4st
Join Date: Oct 2012
Posts: 336
Mine isn't a bench but makes a good jockey seat for an adult and small child(7 yo). He can rest his feet on the middle bar and there is a webbing handle to hang on to. The battery box is used for general storage and has fishing tackle in it at the moment but comes out in seconds. At some point I plan to put some mesh netting in the top part of the rack to make a glove, hood and mask store for when diving.

Click image for larger version

Name:	DSC_0223.jpg
Views:	68
Size:	73.9 KB
ID:	118542

The top is held in by 2 bolts and a plate.

Click image for larger version

Name:	DSC_0224.jpg
Views:	70
Size:	76.5 KB
ID:	118543.

With the top off it looks like this, although I hadn't finished fitting it when the last photo was taken.

Phil
Attached Thumbnails
Click image for larger version

Name:	20150208_154226.jpg
Views:	61
Size:	77.7 KB
ID:	118541  
__________________

__________________
Phil M 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 12:00.


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