Spy38W 0 #1 May 9, 2002 I've started jumping a friends Diablo and noticed the front riser pressure is much higher than I was used to on the Tri (same size). I was wondering if this was just normal for a semi-elliptical canopy or just a characteristic of the Diablo. Also, does it get worse in more elliptical canopies?When jumped it it had a bungee collapsable pilot chute that I think was worn out (inflated halfway through a 90 degree riser carve), and I haven't jumped it since getting a collapsable.If this is normal, are there any techniques to getting more control from them or should I just do more pull ups?Thanks in advance--Give them a sip of the darkside, and they just thirst for more. Quote Share this post Link to post Share on other sites
polarbear 1 #2 May 9, 2002 There are several factors that contribute to the front riser pressure. Just being elliptical doesn't decide the pressure...it has to do (I think) with where the weight is suspended, and where the lift is created on the airfoil. A center of lift forward on the airfoil will contribute to higher riser pressure; moving the center of lift back will help lower it.I know for a fact that some very highly shaped canopies have low riser pressure (ex. vengeance).One technique to get around high riser pressure is to use an "over the hill" method. This means fly in some brakes (1/2-1/4) prior to initiating the riser maneuver. Then, smoothly let up the brakes and initiate the front riser maneuver. You should INITIALY have lower riser pressure, which will help you initiate the maneuver. As the speed builds up, your riser pressure will also build. That's where the pull-ups help.As always, try it up high first. Your rate of turn/dive can change when you do this, so learn it before trying to land with it. Quote Share this post Link to post Share on other sites
rhino 0 #3 May 9, 2002 I was loading mine at 1.6+.. I haven't jumped a Diablo at 1.2 where I was loading my Triathlon.. The front riser pressure on my Diablo110 was very manageable.. What is your wing loading?Rhino Blue Skies ..... Quote Share this post Link to post Share on other sites
Spy38W 0 #4 May 9, 2002 1.26 assuming the gear weighs 25 pounds. I was pretty surprised because I was expecting it to turn a lot quicker and easier than the Tri would with the risers. Will have to see if the new PC makes a big difference--Give them a sip of the darkside, and they just thirst for more. Quote Share this post Link to post Share on other sites
Spy38W 0 #5 May 9, 2002 Thanks Polar, been using the over the hill method at altitude, and a couple of times for the final turn under the Tri. I'm not sure what I think of it yet. Ugh, more pullups.. --Give them a sip of the darkside, and they just thirst for more. Quote Share this post Link to post Share on other sites
rhino 0 #6 May 9, 2002 I was at 1.6 to 1.7 so I'm not sure how much zip you will get at 1.26.. There should definitely be a performance boost.. How many jumps does your friends Diablo have on it? Blue Skies ..... Quote Share this post Link to post Share on other sites
Spy38W 0 #7 May 9, 2002 QuoteHow many jumps does your friends Diablo have on it?Around 200, I'll have to look at the brake lines on the next jump to see if they are too short also.. hrm.--Give them a sip of the darkside, and they just thirst for more. Quote Share this post Link to post Share on other sites
skycat 0 #8 May 9, 2002 Here's the post on how to check the lengths for front riser turns.Well I just re-read that post and the only thing missing is to try the front riser turn without your toggles at altitude, then try it again with toggles. If the pressure is less without toggles your brakelines are to short. Remember do this at altitude. Quote Share this post Link to post Share on other sites
Kirils 1 #9 May 9, 2002 I'm stumped, I own a 160 Tri and a 150 Diablo. The front riser pressure MAY be a little less with the Diablo. Turns are much,much faster on the Diablo and openings more quirky. I'm loading at 1.4. The old timer front riser method is a great idea!Skydiving is not a static excercise with discrete predictability... Quote Share this post Link to post Share on other sites
