ya so I bought a Speed 17m used a while back ago and coming from lei's I'm not sure but I believe that I need to perform the uds 6.2:1 mod because the power is either on/off in that at 10kt-12kt I'm being dragged down the beach and can't move upwind. I have two questions 1 Is their an easier description on how to do this mod? and 2 should I perform a mixer test now, i.e did this kite always act like this or is it performing like this from line creep?
You want to be pretty comfortable with the bridle and tuning your kite before doing the 621 UDS mod.
Your first step is to check front/rear line lengths because the fronts stretch. Then check you sparepartline.
The pulley line (sparepartline) shrinks and as a first step try lengthening it. It is 150 cm stock. However the bridle lines shrink at uneven rates (A the least, Z the most) so you may even be able to go longer with the sparepartline. I suggest lengthening it until it becomes unstable, then pulling it in a few cm at a time until you like how the kite is tuned.
Lots of info on foilzone. Use the search function first.
I know that this was probably answered before, but why would the pulley line shrink, isn't it in tension all the time. Or is it a problem with the line that was prestretched, and now it is returning to its original length. Anyway I'll check the length of the pulley line first. jakemooremd what you're suggesting is this the same as the mixer test, because I saw the video on foilzone a while back and this doesn't seem to bad, i.e I should be able to do this in one afternoon. I'm really wanting to fly this kite as it was meant to.
Mug wrote:Or is it a problem with the line that was prestretched, and now it is returning to its original length.
Yes, the pulleys work the prestretch out, or at least they can lengthen it. Replacement pulley lines (yellowish) stretch less, but anway FOCUS on your pulley line not getting under about 146cm or performance gets bad.
Forget the mixertest - that is for follow-on depower models, and involves adjusting the surrounding lines to compensate for changes in pulley line length. Also mixertest allows customizing the airfoil camber for mellow vs aggressive flying.
Mug wrote:I know that this was probably answered before, but why would the pulley line shrink, isn't it in tension all the time. Or is it a problem with the line that was prestretched, and now it is returning to its original length.
The bridles near the kite shrink due to regression of prestretch. The pulley line shrinks faster because it runs over a pulley. Even q-power shrinks over a pulley in my experience. Z lines shrink faster than C etc. because there is less tension.
Anyway I'll check the length of the pulley line first. jakemooremd what you're suggesting is this the same as the mixer test,
It is different but has the same final goal of making the kite fly right. The shrinking pulley line was discovered when some of the speed 1's started flying bad. All of the newer kites have the mixer designed so the ends of the risers are even. To do a mixer test on the older flysurfer kites you need to do it where the bridle meets the canopy: the so called long-mixer-test. But you have to be able to figure out the relative ABCZ bridle lengths first. More hints on Foilzone.
TRY PUTTING AN INFLATABLE LEADING EDGE ON IT.... THEY WORK MUCH BETTER THEN.....
Ha Ha Ha. If you can show me how to get your blown out 2005 LEI to fly like it was new and satisfy my need to mow the lawn in 10 knots I'll gladly give up the the tangled bridle.