Activity

Adrian,Regarding the #6 eye nut request- head to the hobby store. I’ve made a couple small simple ebays using a RC Plane wheel collet for the eye nut.I usually add a locking nut as well, just to make sure it…   Read more»

Correction. It will hold more motor than I can afford. :PKen

the booster long enough for 29″ of motor. I think that should cover all (non-hybrid) cases commercially available.Thanks,Ken

Maybe…… I keep hearing of some new stuff…. Can you say MUCH longer motors possibly/probably on the way… 😀

I follow what you’re saying, Conway. I’m just trying to decide whether to top the booster with an open coupler and use the eyebolt closure, or to put the bulkhead in the coupler with a U-bolt. BTW, this is a…   Read more»

More questions, diving into this as the noob: Has anyone ever seen a front closure unthread from the casing due to recovery harness attachment? It’s pretty straightforward to put a jamnut between the eyebolt and closure, but what about the…   Read more»

My eye nuts and threaded rod are drilled and pinned to prevent unthreading. One is fixed and uses either a roll pin or cotter pin, the other uses something much like a safety pin. I had some fears about unthreading…   Read more»

More questions, diving into this as the noob: Has anyone ever seen a front closure unthread from the casing due to recovery harness attachment? It’s pretty straightforward to put a jamnut between the eyebolt and closure, but what about the…   Read more»

My eye nuts and threaded rod are drilled and pinned to prevent unthreading. One is fixed and uses either a roll pin or cotter pin, the other uses something much like a safety pin. I had some fears about unthreading…   Read more»

I like the eye nut concept because it puts the load straight into the threaded rod, which is the only thing typically holding the ends of the av bay together. Otherwise, the offset of the u-bolt from the threaded rod(s)…   Read more»

Good for you Conway. I won’t use them. I can’t see any advantage to the eyenut method, other than a slight weight savings, but you have to admit there is the possibility of them backing out in flight. Even if…   Read more»

Doug, I would have to disagree. Ive never seen this be an issue. UNLESS the flyer didn’t prep it right, But thats not a failure of the method but a failure in doing it right. ALMOST every flight ive flown…   Read more»

I’ll send you a PM.Doug

Thanks, Doug. I’m using U-bolts on my next rocket, for no other reason than I trust them to work. You need any MBA’s with an English degree who’s always loved, studied, and lived science down there in NM?

Bruce, your question is why I don’t use eyebolts or eyenuts. It is possible for them to un-thread especially if one section of the rocket like the fin can is rolling. I bolt the motor in with a bolt to…   Read more»

I have a pretty extensive amount of hardware pieces like these forged eye nuts and eye bolts I keep around.And, they’re good quality! I should ask this elsewhre, but how do you keep forward closures from unscrewing after main deploy…   Read more»

Just so most know I have a pretty extensive amount of hardware pieces like these forged eye nuts and eye bolts I keep around. If ever any of you need some please feel free to give me a shout.

JW, I put two aside for you. I’ll be at MHM, just maybe not Friday–when the cool kids fly. Don’t know how my schedule will be then.

I’m betting most of the time the harness fails before the eyenut.EdwardI concur. Another area that I have had issues with is when I use a Kodson / AMW casing and I anchor directly into the fwd closure. My rocket…   Read more»

I buy my eyenuts from CD Fasteners in Fort Collins. I think when I bought some 3/8″ ones they were $6 apiece. I’m betting most of the time the harness fails before the eyenut.Edward

I just bought four 1/2″ stainless, non-forged eye-nuts with a 2000# WLL for $10.33 each. Based on the load rating, I’d say that beats the price of the nearest McMaster equivalent by quite a bit.http://www.bosunsupplies.com/products2.cfm?product=S0321W