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Old 01 May 2012, 15:38   #1
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Honwave 3.8 airdeck bulging

Hi, i recently bought a honwave 3.8 airdeck & while out on our first outing (2 adults 1 child) on flat water with a yamaha 20 2st short shaft motor i noticed the floor bulging to a high degree in the centre of the boat & the boat wouldn't plane very well.
also when on my own in the boat sitting on the left tube the boat was very unresponsive on turning to starboard and tended to crab to port unless i gave it more gas. the main tubes were pumped up to correct pressure and the floor was pumped up to .65 bar and not to .80 bar.(as was very difficult to achieve .80 bar with the foot pump. would the small difference in pressure cause these problems? Had a Zodiac with aluminium floor & inflatable keel before & it was brilliant!
I would be really happy for some advise & some thoughts as to weather i'd be better with a honwave with the ally floor & inflatable keel.
Nigel
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Old 01 May 2012, 16:07   #2
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I used to have a honwave t-30 which was great when correctly inflated, awful when slightly low pressure (ally floor)

I use a bravo on my futura airdeck and it was worth every penny
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Old 01 May 2012, 17:50   #3
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Hi Nigel,

The difference in pressure will definitely make a difference. Does the foot pump you have have the higher pressure valve on it? It might take a while, but it should sort your issues out.

I would definitely recommend getting the bravo electric pump as mentioned above, as it pumps it up to perfect pressure every time!
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Old 01 May 2012, 18:18   #4
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Airdecks - to paraphrase Conrad Hilton:

Pressure
Pressure
Pressure
______________

Airdecks - to paraphrase his Great Grand-daughter:

Blowing them up is a job
Blowing them up is a job
Blowing them up is a job
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Old 01 May 2012, 19:34   #5
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Its definitely because the floor isn't at the correct pressure & the only way you'll achieve that is with a Bravo BST HP electric pump.

Good price here
BRAVO SUPERTURBO 12HP ELECTRIC PUMP 12V PUMP INFLATABLE | eBay

but for your boat the one with the built in rechargeable battery will be more convenient
http://www.rib-shop.com/product.asp?P_ID=436
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Old 02 May 2012, 02:50   #6
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Correct floor pressure is critical on an air floor SIB and the last 20% of pressure is the important bit! You don't need a Bravo to get up to pressure, any 10 double action stirrup pump from a camping shop will do it.
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Old 02 May 2012, 05:40   #7
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Quote:
Originally Posted by Max... View Post
You don't need a Bravo to get up to pressure, any 10 double action stirrup pump from a camping shop will do it.
I beg to differ, I tried one of those first when I had a Honwave and the force you need on those cheap pumps breaks them as soon as the going gets tough. I broke the original bellows pump and a stirrup pump trying to get the floor pressure. The floor (& tube to a slightly lesser degree) pressure is critical as the boat floor will buck & wobble like a jelly when under pressure. And don't forget the effect the cold sea has on the floor pressure once launched (i.e. it reduces). A stirrup pump is pretty much impossible to use in the boat once launched.

Bravo all the way!
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Old 02 May 2012, 05:40   #8
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Quote:
Originally Posted by willk View Post
airdecks - to paraphrase conrad hilton:

Pressure
pressure
pressure
+ 1
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Old 02 May 2012, 12:40   #9
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Quote:
Originally Posted by longjohn
I beg to differ, I tried one of those first when I had a Honwave and the force you need on those cheap pumps breaks them as soon as the going gets tough . . . And don't forget the effect the cold sea has on the floor pressure once launched (i.e. it reduces). A stirrup pump is pretty much impossible to use in the boat
A Bravo is definitely good to have, but it's really not essential. Do get one if you can afford it, but don't worry too much if you can't. Just allow a bit more time to pump the boat up!

I don't know about a supercheap stirrup pump but the Quicksilver ones are about 20 and are well up to the job. I've never felt the need to use the pump in the boat either.
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Old 02 May 2012, 14:33   #10
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A bravo pump is the way forward with out a doubt.

I use this one
BRAVO Inflatable Boat Rib 12v HP Air Pump Inflator BP12 | eBay


Its 75 and well worth the money. I use it to pump up my Bombard Aerotec 380. It turns off when it gets to the right pressure so no need to monitor the pump.
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