Reply
 
Thread Tools Search this Thread
 
Old 19 June 2018, 05:09   #1
Member
 
Country: UK - England
Town: Cornwall
Length: 3m +
Join Date: Jun 2018
Posts: 2
Inflation sequence

Hi I have a sunsport airb320 and am not sure if Iíve been inflating it properly

I fill the main port and stbd chambers till they take shape (still very soft)

Then the bow so it takes its shape (still very soft)

I then fill the port and stbd to 0.25 full pressure and then the bow

Finally the 2 floor chambers to 0.80 pressure

Is this correct or am I doing it in the wrong order , just been wondering because of the baffles in between the port/stbd and bow compartment ,
Many thanks, Kieran
__________________

__________________
Kilotango is offline   Reply With Quote
Old 19 June 2018, 05:29   #2
Member
 
Country: UK - England
Town: East Anglia
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Mariner 9.9 2018
Join Date: Nov 2007
Posts: 4,134
Sounds good. I add in an interim inflate of each of the tube chambers to about 100mbar... just a personal thing to go that extra step to looking after the baffles.

BTW: Hello and welcome to the forum.
__________________

__________________
Fenlander is offline   Reply With Quote
Old 19 June 2018, 05:36   #3
Member
 
Country: UK - England
Town: Cornwall
Length: 3m +
Join Date: Jun 2018
Posts: 2
Quote:
Originally Posted by Fenlander View Post
Sounds good. I add in an interim inflate of each of the tube chambers to about 100mbar... just a personal thing to go that extra step to looking after the baffles.
Thanks for the quick reply, I just spoke to somebody on the phone who has told me to start with the port and just go round in a clockwise direction and slowly take them up to pressure port - bow - stbd and told me it doesnít matter which way the baffles go, I was under the impression that it did matter, now Iím confused haha
__________________
Kilotango is offline   Reply With Quote
Old 19 June 2018, 13:44   #4
Member
 
Country: UK - England
Town: Waterlooville
Boat name: Tickler
Make: Halmatic P22
Length: 6m +
Engine: Inboard Diesel 140HP
MMSI: 235115642
Join Date: Sep 2015
Posts: 375
RIBase
I was led to believe the baffles are glued in with the seam on the forward side of the baffle so it was better to start at the bow and work aft. This minimised the risk of you peeling the baffle away from the tube.

I would have thought this was an obvious failure route so maybe they put a seam strengthener on the other side meaning it doesn't matter from which side you inflate it.

Are there any tube makers on here that can shed any light on it?
__________________
GuyC is offline   Reply With Quote
Old 19 June 2018, 14:13   #5
Member
 
Country: UK - England
Town: East Anglia
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Mariner 9.9 2018
Join Date: Nov 2007
Posts: 4,134
Well if you think about it the baffles are a safety design and you have no way of knowing which tube you might puncture leaving the adj ones to full pressure. So the baffles should cope with pressure from either direction. I think its fine as long as you do a variation of the gradual inflate you mention or I do.
__________________
Fenlander is offline   Reply With Quote
Old 19 June 2018, 14:50   #6
Member
 
Country: UK - England
Town: Lincolnshire
Boat name: Mousetrap
Make: Zodiac Cadet 310S
Length: 3m +
Engine: Mariner 4 stroke 9.9
Join Date: Sep 2014
Posts: 293
A little bit of air in each compartment, put the boards in.

Inflate one of the large compartments to shape but not full pressure, inflate the other to shape but not full pressure.

Top up the first to almost full pressure. Top up the other to full pressure. (The conical baffle will even out the pressure in both.

Then do the keel or floor.

However, I think we're all overthinking it.
__________________
My novel, "Bridge of Otherwhere" 2018 by Michael Wilkinson, now available for download on Kindle.TinyURL.com/Bridge-of-Otherwhere
Mikefule is offline   Reply With Quote
Old 19 June 2018, 16:19   #7
Trade member
 
Dave Cowell's Avatar
 
Country: UK - England
Town: Chorley, Lancs
Length: no boat
Join Date: Apr 2012
Posts: 105
Quote:
Originally Posted by GuyC View Post
I would have thought this was an obvious failure route so maybe they put a seam strengthener on the other side meaning it doesn't matter from which side you inflate it.

Are there any tube makers on here that can shed any light on it?

Baffles can stand the same pressure from either side. Inflating "backwards" ie from rear to front should never cause a failure but some baffle designs will distort the tubes when blown the wrong way.
__________________
Retubes and Repairs
www.nwri.co.uk
Dave Cowell is offline   Reply With Quote
Old 20 June 2018, 01:32   #8
Member
 
Country: UK - England
Town: Sussex
Boat name: Bombard, Y-162
Make: Aerotec 380, Y-Class
Length: 3m +
Engine: Mercury Mariner 15hp
Join Date: Jul 2010
Posts: 2,878
I'm with MikeF - not worried about which first just a bit in each then some more to each then full in turn. Definitely a bit of overthinking otherwise!

Just don't do what you see on some YT videos where dipsticks with Bravo pumps stick it in in one chamber, hit the full 2.5psi, walk off and repeat in the next...
__________________
Max... is offline   Reply With Quote
Old 20 June 2018, 02:59   #9
Member
 
The Gurnard's Avatar
 
Country: UK - Scotland
Town: Stirling
Boat name: The Gurnard
Make: Quicksilver
Length: 4m +
Engine: mariner 25hp 2s
Join Date: Jul 2013
Posts: 1,134
For completeness perhaps its worth mentioning that I have had two inflatable boats which must have the baffles pointing in a certain direction. The manuals with both boats clearly indicated the sequence.

The Frib and an second hand Lodestar I had a few years ago. Both boats were fitted with pressure release valves which is why an inflation sequence should be followed.

Example the Frib has release valves on the rear chambers. The Front chambers don’t have one fitted.

The rear chamber is finally pressurized before the front chamber so the baffle is pointing forward. (still inflate all chambers in steps) In the event of the sun heat over pressurizing the boat .. the release valves operate and release pressure from the rear chambers. The Front chambers equalise pressure by moving the baffle backwards. If the front chamber was pressurised first the baffle could not move backwards so the front would not be protected.

If memory serves me right,,the Lodestar had the relief valve on the front chamber .. so it had to be inflated first so that its baffles pointed into the rear chambers.

I believe the Excel Vanguard range of inflatable’s also have a pressure relief valve in the front chamber similar to the Lodestar.. (although I may be wrong in thinking that) ..but their website advertises they do. If so..it will also matter on the sequence of inflation.

So beware if your boat is fitted with pressure release valves. it matters which way the baffle points for the release valve to protect all chambers
__________________

__________________
The Gurnard 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 16:05.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.