Yep David...I'm all out of "pixie dust" guess I'll do another 75mm. I didn't feel like fighting this one.
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Gonna need a section of 1/4in threaded rod, an eyenut [also 1/4in] and 2 bulkplates,[ Coupler & airframe] to make another av-bay lid.
NOTE: this extra needed one [larger BP,]does not come with the kit, must purchase separately. You do get the black coupler BP.
Place coupler/NC shoulder into place.
Screw rod into NC tip and back it up with nut.
Slide through the NC & slip glued together BP's into place.
Get out the Dremel and cut it off leaving 3/4in.
Screw on the eye-nut. Done.
CJ, thanks. Every time I wonder how to set something up, I read this thread first. Creating this thread is a wonderful contribution to the rocketry community.
Cheers
How the rest of you doing with your Darkdtars?
Many folks like to just screw the machine screws into a tapped and threaded hole in the fiberglass. I would not epoxy the screws in, just in case you wanted to replace the buttons. Personally, I like to back the screws with blind nuts on the inside of the tube and secure them in place with some epoxy.
The wood screws are used if you are attaching the rail buttons to a wood centering ring thru the body tube.
View attachment 400690
Thanks for the reassurance. This is my biggest fiberglass project so far, in a number of ways. It's nice to have people on the forum whose experience I can lean on. Thanks. Just a few loose ends to tie up and it's ready to fly. I'll be joining a junior that's been a great rocket to fly.If you go back and read the posts pertaining to mounting rail buttons, you will see I just mount directly to airframe by drilling 1/8 hole and self tapping the machine screw in. [or drill and tap if you have one.]
I have another 3in glass rocket with over 115 flights. Replaced buttons at least 6 times and still going strong. A drop of CA and the hole can be re-used if worn.
Anything else is overkill and not needed. I seriously doubt many others have flown a rocket this many times.[yes there are a few]
So my technique has stood the test of time....15yrs and 115 flights.
I would much rather have the screw pull out in case of a mishap [yes there have been a few] rather than a hole in my airframe from an over sturdy mount that ripped through. As in a V-max high thrust that left the buttons in a dirty, corroded rail.
As I have mentioned many times, these are my methods, there are many that work just fine, I just like to think mine are simple, foolproof and work.
what ever you decide make sure the protruding screw will not catch your recovery gear, where I specify mounting, they will not.
Good luck with your build have fun, the DarkStars are nice rockets you will enjoy for any years!
That’s not a doll. That IS Spongebob!I find the Spongebob doll in the background of the first pic disturbing.
s6
Believe it or not this rocket has still not left the ground. There have been a series of setbacks. Last weekend I got as far as loading the BP for the election charges when the launch was scrubbed by an approaching thunderstorm. Maybe this Saturday. I've got a CTI J210 for the first flight.Thanks for the reassurance. This is my biggest fiberglass project so far, in a number of ways. It's nice to have people on the forum whose experience I can lean on. Thanks. Just a few loose ends to tie up and it's ready to fly. I'll be joining a junior that's been a great rocket to fly.View attachment 400779
After one flight on a J210 the rocket is now lost in the trees. I have the final GPS coordinates but the leaves are too thick to spot it. May be able to recover it in the fall.Thanks for the reassurance. This is my biggest fiberglass project so far, in a number of ways. It's nice to have people on the forum whose experience I can lean on. Thanks. Just a few loose ends to tie up and it's ready to fly. I'll be joining a junior that's been a great rocket to fly.View attachment 400779
Aw, man... I'm really sorry to hear that! I was just admiring your rocket photos from above just a few minutes ago (catching up from being off the forum for a week). Hopefully you can get it down soon(er)!After one flight on a J210 the rocket is now lost in the trees. I have the final GPS coordinates but the leaves are too thick to spot it. May be able to recover it in the fall.
Up was good, down was not.
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