You guys are killing me... any pictures?

Now we're wandering pretty far afield from where this started which was John looking for a 3/8" eye nut and then apparently on the flavors and colors of Locktite.

I was particularly found of the look on Joe Latrell when I told him I'd give him the GPS coords of the BEE bird out on the prairie in return for $50 for the gas and a $200 donation to NCR. They stopped by my house in Longmont on their way up to the site, wrote me a check and went to pick up their bird. Along the way they pissed off at least one rancher too. Actually, while those guys may have rubbed us the wrong way for a variety of reasons, I can't fault their motivation. They've developed a bird quite different from the run of HPR technology on their own and from the ground up. So far, they've had more successful flights than failures. Hell, they gave James an excuse to build an O motor, you can't complain about that.

Warren

Now we're wandering pretty far afield from where this started which was John looking for a 3/8" eye nut ...

Yes, my "brother-can-you-spare-a-3/8"-lifing-eye" thread got some legs, but back on topic --- I thought of something else regarding the loctite, the un-threading, etc. On high-dollar projects where I have room, I do one utterly simple thing... I run a screw or tiny eyebolt into the bulkhead, and then I use a zip-tie between that and the lifting eye. Thattaway it doesn't unwind. It is a $0.79 solution to a $600 problem.

Just for good measure, I also use lock washers, loctite, and my triceps. The zip tie makes it pretty much a done deal.

JW

Here is my two cents. Use what you are going to use. Every method has pros and cons. The strength of todays bolt material is sufficient enough for most of todays projects. I also have seen in both mount systems that have gotten ripped out say during powered accent and the chute comes out and subjects the rocket to some severe forces. I have seen eye bolts bend, rip and tear, I have seen them get ripped out of motor cases. I have seen lifting eye pull threads and let go. I have seen u-bolts get ripped out of...yes...G10 and plywood. Most people use all thread with lifting eyes, that is the weak spot on that design as all thread is rated less than a grade 1 strength. So stop arguing over which system is better. They both work the about the same. Use what works for you.

Me I would use lock nuts. Loctite is a great product but can be a pain to work with out in the field without the proper tools. Also tends to bunch up (goober I call it ) when removing it etc.

Here is my two cents. Use what you are going to use. Every method has pros and cons. The strength of todays bolt material is sufficient enough for most of todays projects. I also have seen in both mount systems that have gotten ripped out say during powered accent and the chute comes out and subjects the rocket to some severe forces. I have seen eye bolts bend, rip and tear, I have seen them get ripped out of motor cases. I have seen lifting eye pull threads and let go. I have seen u-bolts get ripped out of...yes...G10 and plywood. Most people use all thread with lifting eyes, that is the weak spot on that design as all thread is rated less than a grade 1 strength. So stop arguing over which system is better. They both work the about the same. Use what works for you.

Me I would use lock nuts. Loctite is a great product but can be a pain to work with out in the field without the proper tools. Also tends to bunch up (goober I call it ) when removing it etc.

Sorry Mike cant agree with you on the all thread... I sell the stuff Its rated at at grade 5 in Stainless steel and the standard stuff is grade 2 at a minimum.. And it is far from the weak spot.. Try pulling apart the length of one with what ever you want.. Not bend it in half but pull it lengthwise and its more then strong enough... While I will agree with you, there are more then sufficient ways to do things and not anyone way is wrong as well as there are as many equal things that take them apart.. I dont see any issues here just folks entering into opinionated conversation, If that comes off as arguing... sorry. But I isnt arguing with no one... 😉

And JW I use 2 wire ties on each end of my ebay forged eye bolts to keep them from turning as well.. they work great!!!

I don't think anyone is arguing or sniping or rattling anyone else's cage. I learn a LOT here. It may come across as a bit spirited, but that is OK!

See my post at http://www.ncrocketry.org/modules.php?name=Forums&file=viewtopic&t=567&postdays=0&postorder=asc&start=45 about 3/4ths of the way down the page. It is long, so I won't recreate it here. It was about difference of opinion. I think I was on pain medication when I wrote it, though 😉

Warren, I'm glad you set this thread straight (sorry!), but I've learned quite a few things from it. First, I never thought of using cable-ties or wire to keep an eye-bolt from uncrewing. Second, you can use the cotter pin that you use to keep a U-bolt from uncrewing the bulkhead. Very good posts, guys. 😉

If you sell 1/2"-13 stainless threaded rod, I want some. Short of ordering from McMaster-Carr, I can't find it anywhere locally. How much for a 12" chunk?

Warren

Sorry Mike cant agree with you on the all thread... I sell the stuff Its rated at at grade 5 in Stainless steel and the standard stuff is grade 2 at a minimum.. And it is far from the weak spot.. Try pulling apart the length of one with what ever you want..

Sorry but that is if people buy all-thread from you. When I ran the hardware department at The Home Depot they as well as Lowes and many other hardware stores where most people get their all-thread is less than grade 1 material. I worked with a gal from Crown Bolt who sells to all the major hardware stores and that is what they get. Unless everyone buys from you Conway then I would have to say most all-thread out there is less than grade one unless they are buying it a specialty place. Oh and I have still seen threads pulled out of a grade five bolt on a rocket before as well. It can happen with the right forces.

Sorry didn't mean to say people where arguing, maybe more like a very slightly heated debate.

If you sell 1/2"-13 stainless threaded rod, I want some. Short of ordering from McMaster-Carr, I can't find it anywhere locally. How much for a 12" chunk?

Warren

As Ive been in paint school all this week, (one more day to go) I will check on friday for you Warren.

Sorry Mike cant agree with you on the all thread... I sell the stuff Its rated at at grade 5 in Stainless steel and the standard stuff is grade 2 at a minimum.. And it is far from the weak spot.. Try pulling apart the length of one with what ever you want..

Sorry but that is if people buy all-thread from you. When I ran the hardware department at The Home Depot they as well as Lowes and many other hardware stores where most people get their all-thread is less than grade 1 material. I worked with a gal from Crown Bolt who sells to all the major hardware stores and that is what they get. Unless everyone buys from you Conway then I would have to say most all-thread out there is less than grade one unless they are buying it a specialty place. Oh and I have still seen threads pulled out of a grade five bolt on a rocket before as well. It can happen with the right forces.

Sorry didn't mean to say people where arguing, maybe more like a very slightly heated debate.

No worries Mike. 😉

Certainly non taken and hopefully non given. In the immortal words of Paul Harvey....Gooooood Day!.