Tomcat inflation pressure decr with cold water - Mountain Buzz
 



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Old 04-24-2017   #1
 
Enfield, New Hampshire
Paddling Since: 1990
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Tomcat inflation pressure decr with cold water

This spring I have noticed that the infl pressure falls and the boat tends to become mushy in the cold run off water. Should I overinflate it before putting in? Or should I reinflate After a few minutes in the water? The recommended pressure is 2.5psi, can I safely go over this by a bit to avoid reinflating in midstream?
Thanks in advance for your suggestions.

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Old 04-24-2017   #2
 
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Summit County, Colorado
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pump up the boat, put boat in water, splash with water to allow the boat to cool down. pump again till tight.
The cold water will make the air in your boat cold forcing it to contract, science.
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Old 04-24-2017   #3
 
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Sacramento, California
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That sounds like your own option. Get it wet and reinflate.

You may also want to release some air at the take out before hiking out. You don't want to over inflate the kayak either.
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Old 04-24-2017   #4
 
montrose, Colorado
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Old 04-24-2017   #5
 
GJ, Colorado
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Quote:
Originally Posted by Quiggle View Post
pump up the boat, put boat in water, splash with water to allow the boat to cool down. pump again till tight.
The cold water will make the air in your boat cold forcing it to contract, science.

This. The process is known as 'tempering', and anyone paddling an inflatable in cold water should learn it.
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Old 04-25-2017   #6
 
Florence, Colorado
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I've tried inflating extremely tight. It still softened up. Do it right the first time as they always say. Get it wet and let it contract. Then pump it up. The other way you end up stopping within a few miles to top up every time.
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