truzzo 0 #1 February 12, 2013 It seams odd to me, that my Javelin rear risers are half an inch shorter than front. I have a pair of Javelin risers that came along with my brand new rig, and they are even. After getting a new canopy some years ago i asked my dealer to get new risers, pilote chute, bag ect,,, to fast swapping canopy if i needed to. And now after more 700 jumps later and many different canopy i noticed that front risers are longer than rears .... i had strange opening with only a 120 katana so far. my vc-96 opens good sub terminal so far. It is normal , i mean to have uneven risers??????? they can lead to strange behavior for the canopy opening ?? Any thought would be appreciated. Quote Share this post Link to post Share on other sites
hodges 4 #2 February 12, 2013 Are these Javelin risers or are they from a rigger? Quote Share this post Link to post Share on other sites
theonlyski 8 #4 February 12, 2013 QuoteIt seams odd to me, that my Javelin rear risers are half an inch shorter than front. I have a pair of Javelin risers that came along with my brand new rig, and they are even. After getting a new canopy some years ago i asked my dealer to get new risers, pilote chute, bag ect,,, to fast swapping canopy if i needed to. And now after more 700 jumps later and many different canopy i noticed that front risers are longer than rears .... i had strange opening with only a 120 katana so far. my vc-96 opens good sub terminal so far. It is normal , i mean to have uneven risers??????? they can lead to strange behavior for the canopy opening ?? Any thought would be appreciated. I've seen this before, but I believe they were Wings risers. Best I could tell they were made that way. The user was complaining of the canopy not flying completely straight. Possibly opening harshly."I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly DPH -7, TDS 578, Muff 5153, SCR 14890 I'm an asshole, and I approve this message Quote Share this post Link to post Share on other sites
RiggerLee 61 #5 February 12, 2013 Hook them to some thing where you can really lean back and put some load on them. How far off are they under load? There tends to be more stitching on the rear riser and you may be seeing shrinkage. The tension may have been turned up high on that machine when it was sewen. Or they might just be off. LeeLee lee@velocitysportswear.com www.velocitysportswear.com Quote Share this post Link to post Share on other sites
riggerrob 643 #6 February 12, 2013 Agreed. It is normal for rear risers to shrink 1/8 to 1/4 inch more than front risers. Shrinkage varies depending upon the sequence they are sewn. For example, if both riser ends are sewn before the bottom, relative shrinkage will be zero. OTOH if the 3-Ring portion (at the bottom) is sewn first, it is easy to get 1/4 difference in shrinkage. Quote Share this post Link to post Share on other sites
theonlyski 8 #7 February 12, 2013 QuoteHook them to some thing where you can really lean back and put some load on them. How far off are they under load? There tends to be more stitching on the rear riser and you may be seeing shrinkage. The tension may have been turned up high on that machine when it was sewen. Or they might just be off. Lee It was about a half inch under load. Only on one side rear riser. The other was fine."I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly DPH -7, TDS 578, Muff 5153, SCR 14890 I'm an asshole, and I approve this message Quote Share this post Link to post Share on other sites
NeonLights 0 #8 February 12, 2013 they do it for a reason, its math and science. dont worry about it Quote Share this post Link to post Share on other sites
theonlyski 8 #9 February 12, 2013 Quotethey do it for a reason, its math and science. dont worry about it I'm sure you're well informed as to why the risers would be different lengths."I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly DPH -7, TDS 578, Muff 5153, SCR 14890 I'm an asshole, and I approve this message Quote Share this post Link to post Share on other sites
popsjumper 2 #10 February 13, 2013 QuoteQuotethey do it for a reason, its math and science. dont worry about it I'm sure you're well informed as to why the risers would be different lengths. For those who have one leg longer than the other.My reality and yours are quite different. I think we're all Bozos on this bus. Falcon5232, SCS8170, SCSA353, POPS9398, DS239 Quote Share this post Link to post Share on other sites
GobbleGobble 0 #11 February 13, 2013 QuoteQuoteQuotethey do it for a reason, its math and science. dont worry about it I'm sure you're well informed as to why the risers would be different lengths. For those who have one leg longer than the other. Sadly there is a fair amount of difference between the three of them. Quote Share this post Link to post Share on other sites
