Next, strap the inside D-rings to the lower side rails or the front and back yokes for the frame corners. Then strap the outside D-rings to the upper side rails, cinching them until they are snug. Start by positioning the frame so weight is distributed slightly forward. This will increase performance characteristics and prevent the boat from "nosing in" or riding bow high. With touring frames that have 2+ seats, the total weight may be closer to the center of the boat. With single seat sport frames, the oarsperson should be sitting forward of the center of the boat. Generally, you want the weight slightly forward of the lateral center of the tubes. Cinch tight, keeping the frame straight and centered. When the frame is positioned where you want it (generally centered on the boat), attach it to the raft's D-rings with NRS HD Straps. (A stern frame rests on the stern tube of the boat). Generally, the frame will rest on the wear patches, but there are exceptions. After assembling the frame, place it on your boat. Carefully follow the frame assembly instructions. Mounting Frames Raft Frame Mountingįirst, be sure you select the correct frame for your boat by conferring with an NRS Customer Service Representative on model and dimensions. This will allow pressure to be released from all chambers at once. To properly deflate, lock open the center chamber valve of each tube. Then inflate the outer chambers to a maximum of 2.5 psi. To properly inflate an NRS Cataraft, open all valves, inflate the center chamber of each tube until it takes shape. To properly deflate an IK just open all the valves. Finally, inflate the thwarts, again to a maximum of 2.5 psi. Then inflate the floor until the pressure relief valve exhausts a small amount of air.
Because of the small tube size slight over inflation of the tubes is acceptable to increase performance. Then top off until firm, to a maximum of 2.5 psi. To properly inflate an NRS IK, inflate both main tubes until they take shape. Then continue around the boat opening the remaining valves. This will take the pressure off of all chambers at once. To properly deflate an NRS boat, open the valves on the thwarts, floor, and the last chamber that was filled before topping off. The NRS product warranty does not cover explosive decompression.
If the over inflated raft strikes a sharp object with enough force to puncture the material, the tube may explode. The greatest danger of over inflation is explosive decompression. However, over inflation does strain the seams and can cause problems later in the life of the raft. Today's high-quality rafts may take substantially higher pressures than suggested by the manufacturer without showing any short-term effects. You must let some air out because this over pressurization can lead to significant problems. This often occurs after lunch breaks when the boat is sitting in the hot sun. Later, as the weather warms up, the raft becomes rock hard. For example, cold morning temperatures reduce the boat pressure. Changes in the temperature frequently result in raft over inflation. A properly inflated boat should still "give" just a bit.Īs air temperature changes, the pressure in the raft chambers should be adjusted. A maximum of 2.5 psi is the recommended inflation pressure for NRS floors. If the raft floor is self-bailing, inflate the floor until the pressure relief valve exhausts a small amount of air. Then top off until firm (about 2 - 2.5 psi). After the main chambers are inflated, inflate the thwarts until each thwart takes shape. The tubes should be filled to a maximum of 2.5 psi (pounds per square inch). Next go around the boat in a counterclockwise direction bringing each chamber to pressure. To properly inflate an NRS raft, open all the valves and work your way around the boat in a clockwise direction, filling each chamber evenly, until it takes shape. Inflatable Boat Use and Care Instructions Inflating & Deflating Rafts
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