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25 February 2015, 21:39
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#1
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Member
Country: UK - Scotland
Town: West Scotland
Boat name: Orca
Make: Humber Ocean Pro 5.5
Length: 5m +
Engine: Tohatsu 115 TLDI
Join Date: Oct 2007
Posts: 172
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Fitting cylinder rack to deck
Just received delivery of a spanking new and very shiney XS Ribs 6-8 bottle, cylinder rack. Each base plate has 3 x 12mm holes drilled for screwing to the floor. The rack will go behind the console and will have various heavy bits of kit strapped to it and will also have divers using it to haul themselves aboard. It needs to be pretty damn well secured to the deck. I'll use sikaflex to act as a water seal and bonding material but will also need something to screw it to the floor. I'm guessing that standard self tappers might not be up to it. Anyone have any suggestions of a what to use?
Ta.
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26 February 2015, 06:31
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#2
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,607
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Not sure what your options are, other than stainless-steel oversized self-tappers? If there was access under the deck I'd get it bolted down. Even if you did have access, then the deck construction underneath (stringers, etc) will restrict you to one side at a time which would mean drilling two access holes?
Can you get a picture of below deck construction of your rib from Humber so you can see?
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Is that with or without VAT?
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26 February 2015, 06:57
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#3
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Member
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,913
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Should it not be glassed in to the deck.
I doubt self tappers are going to be up to the job.
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There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
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26 February 2015, 07:23
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#4
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Member
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,508
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Quote:
Originally Posted by Mr Flibble
Just received delivery of a spanking new and very shiney XS Ribs 6-8 bottle, cylinder rack. Each base plate has 3 x 12mm holes drilled for screwing to the floor. The rack will go behind the console and will have various heavy bits of kit strapped to it and will also have divers using it to haul themselves aboard. It needs to be pretty damn well secured to the deck. I'll use sikaflex to act as a water seal and bonding material but will also need something to screw it to the floor. I'm guessing that standard self tappers might not be up to it. Anyone have any suggestions of a what to use?
Ta.
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i use stainless coach bolts thay have a large thread plus bed on sikaflex to seal
try john taylor fastenings
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26 February 2015, 11:57
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#5
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Member
Country: UK - Scotland
Town: West Scotland
Boat name: Orca
Make: Humber Ocean Pro 5.5
Length: 5m +
Engine: Tohatsu 115 TLDI
Join Date: Oct 2007
Posts: 172
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Thanks guys.
I don't have access to the underside of the deck so its a screw or glass in job. I'll try and source m12 stainless self tappers and screw to the deck with a load of sikaflex. Alternatively I could try screwing down/sikaflexing a ply panel with 6 captive nuts on the underside. This could then be glassed in with glass matting and painted. The rack could then be bolted thru the panel to the captive nuts. A bit more work involved there however.
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26 February 2015, 12:11
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#6
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Member
Country: USA
Town: S. Carolina
Boat name: D560
Make: Avon
Length: 5m +
Engine: 2016 Merc 115hp CT
Join Date: Aug 2013
Posts: 1,277
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Quote:
Originally Posted by Mr Flibble
Just received delivery of a spanking new and very shiney XS Ribs 6-8 bottle, cylinder rack. Each base plate has 3 x 12mm holes drilled for screwing to the floor. The rack will go behind the console and will have various heavy bits of kit strapped to it and will also have divers using it to haul themselves aboard. It needs to be pretty damn well secured to the deck. I'll use sikaflex to act as a water seal and bonding material but will also need something to screw it to the floor. I'm guessing that standard self tappers might not be up to it. Anyone have any suggestions of a what to use?
Ta.
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Toggler Snaptoggle | Anchor Bolts,Toggle Bolt, Toggle Bolts
This is my personal favorite solution. The other option is to glass it in, but using snap toggles will only cost a fraction as much
I would recommend bedding the whole unit lightly in 3M 4200, Sika 221, or Sika 291.
3M 5200 and Sika 592 are overkill for the application.
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Richard
Gluing geek since 2007
Opinions and intepretations expressed are solely my own and do not express the views or opinions of my employer
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26 February 2015, 12:11
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#7
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Member
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,508
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Quote:
Originally Posted by Mr Flibble
Thanks guys.
I don't have access to the underside of the deck so its a screw or glass in job. I'll try and source m12 stainless self tappers and screw to the deck with a load of sikaflex. Alternatively I could try screwing down/sikaflexing a ply panel with 6 captive nuts on the underside. This could then be glassed in with glass matting and painted. The rack could then be bolted thru the panel to the captive nuts. A bit more work involved there however. ![roll eyes](https://www.rib.net/forum/images/smilies/rolleyes.gif)
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i am sure you can get a stainless fixing that is like a rawl bolt or a fixing you use for plaster board basically the bolt pulls the nut up and swells the side walls the top is larger than the hole once fitted it remains in place and you can remove the bolts as required
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26 February 2015, 13:10
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#8
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Member
Country: UK - Scotland
Town: Ayrshire
Boat name: Deepsea
Make: Bwm 18
Length: 5m +
Engine: Mariner 100hp, +4hp
Join Date: Jun 2010
Posts: 120
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Why don't you put a 4" round access hatch in the deck, then you can get get to the underside and put stainless nut's, bolt's and washer's on, that will give you the best fixing, imo.
Gerry.
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27 February 2015, 12:19
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#9
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Member
Country: UK - England
Town: Whitehaven
Boat name: Cerberus
Make: Destroyer 5.8
Length: 5m +
Engine: 115hp Merc 4st
Join Date: Oct 2012
Posts: 462
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I'm also fitting a bottle rack soon and was going to do something similar to the toggler, but home made and probably using more string. Essentially drill an oversized hole, drop in a drilled and tapped plate on a bit of string. Pull string to locate then insert bolt. It may of course end up with a hull full of loose bits of stainless plate...........
Phil M
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28 February 2015, 15:08
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#10
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Member
Country: UK - Scotland
Town: West Scotland
Boat name: Orca
Make: Humber Ocean Pro 5.5
Length: 5m +
Engine: Tohatsu 115 TLDI
Join Date: Oct 2007
Posts: 172
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Thanks for the advice guys. I've ordered some 316 Stainless M12 coach screws and will screw these into the deck along with some 3M 4200 to act as a bonder and sealer. Shortest screws I could get were 50mm so will need to pack out with some washers. (I'm assuming Humber decks are 1 inch ply). Did a test with some wood I had spare and a 12mm zinc plated coach screw I had and by god it's a strong grip it gives.
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28 February 2015, 15:27
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#11
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RIBnet admin team
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: Tohatsu 30HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 11,626
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1" ply seems very thick for a deck. 18mm maybe? Less not impossible.
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28 February 2015, 15:40
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#12
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Member
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,508
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Quote:
Originally Posted by Mr Flibble
Thanks for the advice guys. I've ordered some 316 Stainless M12 coach screws and will screw these into the deck along with some 3M 4200 to act as a bonder and sealer. Shortest screws I could get were 50mm so will need to pack out with some washers. (I'm assuming Humber decks are 1 inch ply). Did a test with some wood I had spare and a 12mm zinc plated coach screw I had and by god it's a strong grip it gives. ![thumbs up](https://www.rib.net/forum/images/smilies/thumbs.gif)
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If you speak to Humber they are very helpful they will tell you deck thickness as poly said I would think 18-20mm thick ,if you pilot drill , screw your bolts in till max thread has gone into the wood then take out and cut to required length no washers needed .humber will probobly give you a patten allowing the full screw length to go in anyway I don't know your boat but my deep v has at least 150mm between deck and hull where you would fit a bottle rack.best speak to humber for piece of mind.
Regards jeff
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