Reply
 
Thread Tools Search this Thread
 
Old 12 August 2004, 15:47   #1
Member
 
Country: UK - Scotland
Town: Ardnamurchan
Make: Domar Corsair
Length: 4m +
Engine: Mercury 20HP
MMSI: What?
Join Date: Aug 2004
Posts: 215
Need some advice/feedback (RIB - R)

Hi, we just bought a Corsair Domar Inflatable boat (with inflatable keel)

It looks like a rib, it performs similar to a rib, so i just call it a rib, even though there is not a single piece of fiber glass on it.

Anyway, i was wondering, since the tubes are similar to a normal RIB, what pressure should be put onto it? I have no idea how far i can go, as we have a compressor that can go up to 8BAR, and i chicken out long before 3 bar.

Also, has anyone successfully Coated an inflatable with Fiber Glass?

Ill go and take a pic of it now, will post later.

Thanks,

Daniel.
__________________

__________________
Mr-d is offline   Reply With Quote
Old 12 August 2004, 16:07   #2
Member
 
Country: Greece
Town: Gloucetsreshire
Boat name: GATO DI MARE
Make: MAR.CO
Length: 9m +
Engine: Yamaha 200Vmax
MMSI: 235027678
Join Date: Sep 2002
Posts: 3,339
Send a message via MSN to Manos Send a message via Yahoo to Manos Send a message via Skype™ to Manos
Is not presure you should be thinking but volume.
Presure should be about 2bar max I think.
__________________

Manos is offline   Reply With Quote
Old 12 August 2004, 16:08   #3
Member
 
Country: UK - Scotland
Town: Ardnamurchan
Make: Domar Corsair
Length: 4m +
Engine: Mercury 20HP
MMSI: What?
Join Date: Aug 2004
Posts: 215
Sideview
Back view
No view of the front right now, camera ran out of battery, and the flash decided that it was to dark to take a pic, so lit up the front end of the trailer.

Pics are about 500Kbyte each, 56K beware.
__________________
Mr-d is offline   Reply With Quote
Old 12 August 2004, 17:14   #4
Member
 
Country: UK - Scotland
Town: Ardnamurchan
Make: Domar Corsair
Length: 4m +
Engine: Mercury 20HP
MMSI: What?
Join Date: Aug 2004
Posts: 215
Quote:
Originally Posted by Manos
Is not presure you should be thinking but volume.
Presure should be about 2bar max I think.
Well, i have no idea how much volume goes into the tubes, however there is a stage where it is *full* and you can continue filling it up after that.

How would you measure the volume entered?
__________________
Mr-d is offline   Reply With Quote
Old 12 August 2004, 20:18   #5
Member
 
Country: UK - England
Boat name: Seashell
Make: Redbay
Length: 7m +
Engine: Inboard diesel
Join Date: Jan 2004
Posts: 5,263
For a Quicksilver inflatable with inflatable keel its 250mbar (3.5psi)

(Is 250mbar 2.5 bar?? )

Manos, what do you mean "it's volume not pressure"; pressure will increase as volume does...

Pressure is the standard measurement of tube hardness round' here!
Attached Thumbnails
Click image for larger version

Name:	DCP_0019.JPG
Views:	189
Size:	15.1 KB
ID:	7488  
__________________
Tim M is offline   Reply With Quote
Old 13 August 2004, 02:18   #6
Member
 
Country: UK - England
Town: Kent
Boat name: Cygnet
Make: Humber
Length: 5m +
Engine: Suzuki 70hp 4* outbo
Join Date: Apr 2004
Posts: 205
Avon recommend 3 to 3.5 PSI thatís 0.2Bar to 0.23Bar, we have an Avon CRRC520 which has a flexible floor. This would wallow all over the place with 6 diver on board, so I contacted Avon to see what the pressure should be & they gave me the figures above. The only time we pumped it to 3PSI the boat just touched a breakwater; there was a huge BANG with the result of a 3ft split down one side. The sudden loss of pressure in one chamber resulted in the baffle cone in the next chamber splitting and loosing air from the whole of one side of the boat. Now we only pump it until its firm not hard, so please be warned DONíT pump it too hard.
__________________
Jackwabbit is offline   Reply With Quote
Old 13 August 2004, 02:47   #7
Member
 
Country: UK - England
Town: Devon. uk
Boat name: bananashark
Make: me
Length: 7m +
Engine: opti 225
Join Date: Apr 2003
Posts: 323
Quote:
Originally Posted by Manos
Is not presure you should be thinking but volume.
Presure should be about 2bar max I think.
As 1 bar (being atmospheric presure ) is about 15 psi, you must have just voided any warrenty you had on your tubes by blowing them up to 30psi.

If your boat is fitted with good quality valves then apparently if the top is not sealed they will realease presure over about 11psi anyway.
__________________
kitten is offline   Reply With Quote
Old 13 August 2004, 05:45   #8
Member
 
Country: UK - England
Boat name: Seashell
Make: Redbay
Length: 7m +
Engine: Inboard diesel
Join Date: Jan 2004
Posts: 5,263
A local Avon dealer once told me that you should pump them up so you can still stick your finger in an inch. I tried this, but they were whey too soft. 1.2PSI works well on the RIB.

Tim
__________________
Tim M is offline   Reply With Quote
Old 13 August 2004, 06:50   #9
Member
 
Country: UK - Scotland
Town: Oban
Boat name: RIB Tickle
Make: Humber Assault
Length: 5.3m
Engine: Yamaha 60ETO,Tohatsu 3.5
Join Date: Dec 2003
Posts: 371
Depends on what you are using them for, recommendations are usually around the 2-3psi mark. 30psi is just a tad much!
If you have folk sitting on the tubes then 3psi is a bit hard as they end up bouncing up and down on the tubes with every bump.
__________________
http://www.argylldiving.btinternet.co.uk
Rupert Bear is offline   Reply With Quote
Old 13 August 2004, 07:15   #10
Member
 
Country: Finland
Length: no boat
Join Date: Aug 2000
Posts: 113
0,2-0,25 bar

should be correct pressure for your boat. In RIB pressure can be lower, around 0,12-0,2 bar, but SIB needs harder tube to keep the boat in shape.

Do Not use compressor to fill your boat unless you have accurate pressure gauge attached to the system.

The tube should be hard enough when you can't bend the cone in the end of the tube.

Jari
__________________

__________________
Jari Hjerppe 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 10:27.


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