Originally Posted by topbud
That link on the keg was dead. Any ideas because a keg on a river trip without the foam is such a great idea.
you have several things working against you as far as heat and pressure go. i worked for a brewery for a few years and know a little about this.
direct sunlight on a keg is bad, ambient temp around a keg (on a boat) is bad as well... especially after introduced to pressurized gas (boyle's law).
if you do the small 5 gallon kegs, and tap one a day, or every other day, AND keep them out of the sun during the day, ANNNND keep them in the river after they have been tapped, you could minimize foaming. (hand pumping with a picnic pump would work fine for this)
your other option is to run the beer through a coil or a coldplate that is in direct contact with ice (or even the river), and push the beer with Co2 (requires a regulator). this is more complicated, as the gas bottle has to be regulated (out of sunlight), as does the beer.
ive taken a jockey box on a river trip before... march westwater, and it wokred fine because it was somewhat cool during the nights.
After you push beer with Co2, you cannot push it with a hand pump, though.
just some thoughts. The biggest challenge is keeping the keg cold.