NTP2
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Well it’s time, 2024 is the year that I (try) to get my cert. let the fun, being!!!
NTP2’s Junior L1 thread.
- Thread starter NTP2
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NTP2
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Ok let’s get started I set out all the bits and organized them (don’t worry it won’t stay that way)
Next I hardened the edges with super glue.
Then sanded a spot on all of them and drew a line on the sanded side then glued 2 together to make 3 sets of 2.
Next up the MM.
Next I hardened the edges with super glue.
Then sanded a spot on all of them and drew a line on the sanded side then glued 2 together to make 3 sets of 2.
Next up the MM.
You say you don’t wish to drain your wallet, but just know that you will! It’s how it always goes no matter what hobby I get into…
What kit are you using? I can’t quite tell.
NTP2
Well-Known Member
Yes but I still need (apparently) to spend some money elsewhere…
ohh come on you can probably make a good guess! I’ll give you a hint it starts with a C…
Minor oversight, didn’t see the decal!
That’s gonna be an awesome kit to cert on!
NTP2
Well-Known Member
By the by I’m going to name it “the Ernest one” because all my rockets are “the #### one” and Ernest Lawrence invented the cyclotron. Also I Ernestly want the cert… I’ll show myself out…
It's a LOC Cyclotron. One of my favorites, so excellent choice NTP2!
NTP2
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Great kit for the cert. Super durable. Good luck with your attempt.
NTP2
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Tapping up for filets,
And the first of many is in…
I swear this thing is going to be 99% filets!
And the first of many is in…
I swear this thing is going to be 99% filets!
NTP2
Well-Known Member
This is making me think of a bunch of people peering in my window at my work bench, I guess that’s what I get for posting on the internet
NTP2
Well-Known Member
3 more filets,
And 2 more to go…
Ps does anyone have a idea about how to do the rail buttons with the tube fins?
And 2 more to go…
Ps does anyone have a idea about how to do the rail buttons with the tube fins?
If you are using screws into the CRs, you can use an offset screw driver.
https://www.harborfreight.com/8-piece-right-angle-screwdriver-92630.html
If you are using screws like this and weld nuts, you can get them with hex heads and use allen wrenches.
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You can run the rail through one of the tubes and mount the buttons to the body as normal. Center them up over one tube fin.
With one extra washer to make sure they clear the ID of the tube fins; no need to put them in the CRs for an L1 rocket. Tap the hole and CA the hole threads. Put Epoxy in one of the holes , Screw the button in NOW , and then flip upside down so the Epoxy forms an inside rivet around the screw.
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NTP2
Well-Known Member
It was hard to find a angle to show all of the filets and a make you able to see clear epoxy.Like with girls posting things on facebook don't put your feet in the foto
Where do you plan to launch? Battle Park in Culpepper, VA?
NTP2
Well-Known Member
Hopefully a new NRVR launch site.
NTP2
Well-Known Member
A washer is flat and a tub is round! But very good point I’ll see what I can do.
Some rail buttons are sold as Delrin washers and round tube for the screw. I try to keep around both complete and 3 piece buttons so I was able to change height by adding a washer or two.
On my Nike Smoke 5.5" fiberglass rocket I had to stack 2 1500 buttons to clear the nose.
ThirstyBarbarian
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Because it seems like the rail has to pass through a tube fin, and the tube fin has a certain thickness, plus it curves toward the rail, I wonder if you will need a little standoff distance for the rail buttons. Would the rail scrape against the inside of the tube fin if the button didn’t have a standoff? I’ve never built a tube fin rocket, so I don’t know, but it seems like a potential issue. You might want to ask around on that. A standoff could be a stacked washer or two, like @Art Upton described above.
ThirstyBarbarian
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It‘s probably ok as long as you have shoes on. Don’t do it barefoot, or you will arouse the weirdos who will comment on your “little piggies”!
NTP2
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Now I’m wondering if that would be in violation of TRF rules…
NTP2
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One of three fin sections in.
I am tacking in place with super glue then epoxy fillet on each side.
I am tacking in place with super glue then epoxy fillet on each side.
brentius
Well-Known Member
Interesting! May I know the specs of the rocke? I would also love to see the openrocket design. I'm also planning to scratch build my junior L1 this year (a 4'' diameter, 5'9 beast). Good luck on your cert!
NTP2
Well-Known Member
I will see if I can find a file as this is a kit (a 3 inch cyclotron) not a scratch build.
