Cost effective dc air pump - Page 2 - Mountain Buzz

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Old 09-12-2016   #11
rafterswhite's Avatar
HSS, Colorado
Paddling Since: 1989
Join Date: Jul 2009
Posts: 53
Originally Posted by Read_N_Run View Post
Wow! Really? So at under 0.5PSI is switches to HP? That seems like a waste of a stage and would drastically reduce the volume it can push.

I think mine actually kicks over at 5kpa, but yes, it's not much psi, but does fully inflate the chambers to "squishy" then pressurizes it with the other stage. Takes about a minute on each chamber to inflate to size, another two minutes to achieve full pressure.
I normally run my urethane chambers around 24 kpa, about 3 1/2 to 4 psi. Up to 3 psi on my hypalon boat.

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Old 09-12-2016   #12
Fort Collins
Join Date: Oct 2004
Posts: 144
Originally Posted by markhusbands View Post
I'm wondering if one of those cheap 12v inflators combined with a K40 for finishing would get the job done on a boat with a high pressure floor.

or would the cheapy just burn out?

how agonizing would it be to do an entire 14 foot boat with a K400?
I do a similar thing with my duckies, use a cheap coleman 12v pump that isn't strong enough to push air in unkess the valves are open...I just have to close them quickly once it tops out its blowing pressure. I then top off with a k20, which I have enjoyed for the versitility on the standard floors, and now a drop stich floor. This system works well for me with a couple tandem duckies and a couple solo duckies too.

My friend has a similar 12v and the AAA version of the k### for his 14' raft, and it seems to work ok.
"If I'm not there, it means I'm dead...or late!" General W.R. Monger
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