Ordered a JLCR and an Alt2 from Rocketman today. Anxious!
I only use hair bands now. The rubber bands wear out quickly and if you don't inspect them, you'll likely get an apogee deployment at some point. The rubber can also grab the chute and it can fail to deploy. The hair bands are solid. I use one band for small chutes and combine two for large chutes.I have heard people talk about more reliable/tougher bands? Hair bands (no pun intended) anyone that has used them have any specifics? Thx!
I concur. The hairbands are designed to be non-grabbing, which you want for the JLCR.I like the fabric covered hairbands. I only fly "I" and below, but with the extra JLCR pins, I can have small hairbands and large ones. The small ones can be "ganged" for an intermediate. Messed up a couple of months ago when I used the large one normally for a 54" parachute on a 36". All was well, but it was better than when I had a rubber band break on a "G" motor flight that ended up in a tree.
Chas
100% success rate here.I am DONE with jlcr for big rockets. Does it work? Sometimes. The success rate reminds me of a PML piston.
More than 1 flight, thanks.1 for 1 is 100% so that does not mean much by itself.
Probably my first dozen big flights went well. Then the gremlins crept in, the snapped bands, the stray shroud line pulling the wrong way, the band compressing onto the fabric itself.. plus when you break a band and the stupid thing deploys then the f%@*|n pin goes loose at altitude so you get to replace that part too - uhg
Every time I wrapped one of those rubber bands around a big parachute, it felt like, why am i using this toy on a serious flight. Sure the glitches I name are largely preventable, but at this point, it seems like making another charge and screwing in a few shear pins is less work than replacing rubber bands and packing, packing, packing over and over again.
100% success rate here.
No.Man, you guys just love tearing down somebody when they have success! Fine, they suck and you shouldn't use them. Is that a better answer?
That's a fair conclusion based on your empirical evidence gathered. I've drawn a similar conclusion myself. Hoping that conclusion does not constitute tearing down someone who has success with said unit.You have 100% success until you don’t. My personal experience as a prefect is that the JL has a higher failure rate than standard dual deployment. That being said, all rockets have an inherent risk of failure.
I think the experience and skill of the users might have something to do with that (but no data): more experienced users might be more likely to use DD, while less experienced users might tend toward the easy JLCR and be more likely to make mistakes. What do you think?You have 100% success until you don’t. My personal experience as a prefect is that the JL has a higher failure rate than standard dual deployment. That being said, all rockets have an inherent risk of failure.
I personally am experienced with DD. Knock on wood, I have never had an issue other than something minor that did not interfere with a successful recovery. I am going to try the JLCR because its a hobby and i enjoy trying new things. I will be using it on smaller rockets like 3" and light kits.I think the experience and skill of the users might have something to do with that (but no data): more experienced users might be more likely to use DD, while less experienced users might tend toward the easy JLCR and be more likely to make mistakes. What do you think?
I think the experience and skill of the users might have something to do with that (but no data): more experienced users might be more likely to use DD, while less experienced users might tend toward the easy JLCR and be more likely to make mistakes. What do you think?
I have dozens of successful flights with PML pistons and the JLCR (up to 84"). Some people have trouble with one or both. I'm just lucky.I am DONE with jlcr for big rockets. Does it work? Sometimes. The success rate reminds me of a PML piston.
Testing is important. As is turning it back on after testing.One thing that's important with the JLCR is the pin receptacle orientation. It swivels. It needs to be pointing downward otherwise the band tension won't pull the pin. Be sure to test the unit with your chute before launch.
I don't think it's luck.I have dozens of successful flights with PML pistons and the JLCR (up to 84"). Some people have trouble with one or both. I'm just lucky.
I've actually used a JLCR in conjunction with DD. I set the JLCR to about 100' above my mains deployment point. It was helpful when I had a real b**ch of a rocket that kept deploying the main recovery at apogee (around 10K). Once I figured out what was wrong, I no longer needed it.I use it when dd isn't an option on a particular rocket and I don't want to walk a mile. Love DD so much better, but a couple of my rockets aren't set up for it so I use the jocr. Well over 20 mid and high power flights with mine.
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