If you’re a home owner, you are probably familiar with the concept of an R-Value. If not, it’s a measure used in the building and construction industry to rate the thermal resistance of building insulation under specific test conditions. The higher the R value, the more effective it is.R value performance testing is done in a 70 F environment with no air movement. As such, it doesn’t reflect many real world conditions where you’d use a sleeping pad, so I highly recommend that you augment any gear selection that you make based on it with field testing.If you are interested in sleeping pads for early spring, late autumn or winter conditions, R-Value is additive. When it gets cold, I like to use two pads, a closed cell foam pad and an insulated inflatable one with a combined R-Value of at least 5.For purposes of backpacking, you also need to factor in weight, comfort, compressibility, and rigidity when you make a sleeping pad selection. In addition, side sleepers may not receive the full R-value of benefit of an inflatable insulated pad because their bodies are not in full contact with the surface of the pad.

This is particularly true for insulated sleeping pads that depend on your body heat to warm them up, including the Therm-a-Rest NeoAir product line, Exped’s DownMats and Big Agnes’ Insulated Pads.The following table provides a side by side comparison of the major sleeping pads available in the US market. The pad weights listed are sized for 72″ long x 20″ wide pads, though there are a few exceptions below. The R-Value of a pad should still remain the same if you select a longer, shorter, or wider variation of the pad. If a sleeping pad has a R-Value of “Not Available”, it’s because the manufacturer has not supplied one or R-value testing has not been performed.Do the Dyneema-Rizers need special handling? The handling is not different to any other risers. You just need a little bit of time to get used to the thin rizers. Is the MASALA2 only available with the Dyneema-Rizer? Additionally to the Dyneema-Rizer there is another option with a thin 12,5 mm. Is the deterioration on light-cloths higher than on a regular glider cloth?

Light-cloths are thinner than conventional glider-cloths and therefore less resistant against mechanical strain. That means you need to pay more attention on small rocks and bushes. Please avoid any unnecessary contact to the ground. With this strict observance you will have the same durability as with a conventional glider-cloth. What are the glide ratio (L/D), trim and maximum speeds? We know that these data are interesting for you as a pilot, but for us to publish them would be a bad idea for the following reasons: 1) Performance data are highly dependent on the drag of the pilot and are therefore related to sitting position and harness. The difference between aerodynamically favorable and unfavorable harnesses and sitting positions can be as much as a whole L/D number. 2) Performance increases with the size of the glider. A large glider will always outperform the same glider in a smaller size. So a question about the performance of a glider is always also a question about the size.

3) There is no normed method of testing the performance of paragliders. For example, speed varies with altitude and the associated different air pressure, but also with the total weight of the system. That means that there simply isn’t THE speed or THE L/D that would allow a serious comparison with another glider. nootka backpackPerformance data are dependent on the harness, the size of the glider, on the air mass and the total weight.kelty 44l backpack How do I calculate my takeoff weight?dabbawalla backpack canada Takeoff weight is calculated by adding the weight of the pilot including clothes to the weight of the equipment. javelin backpack vacuum

The equipment consists of the harness, the reserve chute, the paraglider itself, and any flight instruments and other baggage you may carry (e.g. rucksack, etc.). Is it OK for me to shorten the brake lines on my skywalk paraglider? Changing the length of the brake lines can have a negative effect on the flying characteristics and extreme flight behavior. oobi backpackThe paraglider needs a little more lead when flying on speed bar, otherwise the glider could be braked unintentionally, leading to a loss of performance. reset wifi bacpacWhen performig extreme flying maneuvers, shortening the brake lines too much can cause complications during recovery from collapses, parachutal stall, etc. Am I allowed to make modifciations to my skywalk paraglider? No, because the glider is certified the way it is delivered to you.

Even the brake line length is part of the trim and must not be changed. Why shall I not navigate my glider through the C-level As opposed to gliders with two line levels with which you can change the angle of attack by pulling the rear risers, doing the same on a glider with three line levels causes the profile to deform. This results in a crease forming between levels, which makes the glider more susceptible to collapses. In an emergency, control deflections of several centimeters are possible. Do the nylon wires in the glider near any special attention or packing method? Our nylon wires are flexible and kink resistant, so they won’t break under normal circumstances. But due to the packing volume it is a good idea to lay the Rigid Foils in the leading on top of each other on both sides.. What are JetFlaps and how do they work? Jet Flaps are a so-called split flap like those seen on a large airplane. When the glider is braked, the airflow is routed through the glider, restoring smooth airflow.