Activity

JB Weld is what I like on the inner fillets and then West Systems or epoxy of your choice but the longer the cure the better.

Just be sure to really rough up the bonding areas. 80 grit or so.Ken

I have been VERY impressed with Performance Rocketry’s ?proprietary? epoxy that is a black graphite composite that is stable at 500+ temps. It come as the epoxy with the mongoose kits but can also be ordered separate. I used it…   Read more»

I did not think so.We at work on occasion use some LORD Fusor products.(www.lord.com)It is pretty wild, pretty strong.The metel fusor product is amazing.The 127EZ/128EZ . 147/148 . 152/153 . 201EZ says.and others,SubstratesBonding of SMC, fiberglass, carbon fiber andother plastics…   Read more»

Regarding Mike’s “soaking” question, I think Mike is asking if the epoxy will soak into the airframe – it will not, like it does on the outer layer of phenolic. Mike, if I mis-read your question, I apologize.I’ve never used…   Read more»

Hobby epoxy would work fine if you wanted (15min probably – the 5min cures before it can really soak in, though it won’t really soak into the fiberglass at all regardless), although I prefer West System or Pro-Set. They’re more…   Read more»

I personally have used a lot of West Systems epoxy, others here use Aeropoxy. One reason I use West Systems is that you don’t need a curing oven. Some of the Aeropoxy’s do require a curing oven.Hobby epoxy doesn’t seem…   Read more»

That is sooooo COOL! 😯

What I think is getting confused is the Safety Code and the cert rules. At one time you could use a cluster to cert if the rocket needed the extra newton’s to have a safe flight, that was changed with…   Read more»

It’s total installed impulse, as it sits on the pad.Follow the link John provided above. It shows the new cert rules, as of this year.Mark

5120 is plenty for Me now. But was just wondering.If I have a 5000 Ns motor at take off. 3.5 sec burn. My other threemotors do not start till 5 to 5.5 seconds into the flight.Do You have to add…   Read more»

There is something about clustering and being able to go over the certified level( I am not sure why) but it might have been in the old code or rules or it still may be in the current ones but…   Read more»

Thanks Mark,That’s what I recall from the form. Like John, I was a bit surprised – but still pleased, when I read that line.

I forgot they changed that this year. My 3 part form still has the old HQ address in Utah

You cannot do a cluster or a staged project for a cert flight. From http://www.tripoli.org/cert/TRA_Certification_Rules_2009.pdf“Motor – The certification flight must be with a single certified M or larger motor (tested total impulse greater than 5120.01 n-secs). Staged and/or Clustered rockets…   Read more»

Here’s what the 3 part form says” As a Cert Level 2 member, you are qualified to use A through L solid propellant, and hybrid motors at Tripoli sanctioned launches provided you follow the safety code, and are subject to…   Read more»

Mike,Yes I read that you can cluster to over the 5120NS with a Level 2, but I only saw it in one place and I’d really appreciate someone else checking to confirm.On the Level three application page of your three-part…   Read more»

I’m sorry John and Joe, but I lack certain necessary tools to troubleshoot and fix website issues like username/password problems and editing non-content blocks like the schedule on my laptop. My main machine is still not up and running since…   Read more»

I’ll be out Saturday with a bunch of kits, tubes, cones, couplers, etc.BTW, Warren – my “iflyrockets” login has been nuked somehow. I cannot get in no matter how hard I try… so I re-registered w/ the 3dogs nameplate. Is…   Read more»

As long as those dogs can hunt down a rocket in the Pawnee Grasslands, there’s room on the membership roster for ’em. Great news John!