FREE - Custom Designed and Built Rocketry Components

atlcdp · Oct 18, 2014

I'll print it on Monday, and ship it. PM me you address.

atlcdp · Oct 18, 2014

Working on this now for a 24mm tube. I'll have the prototype early next week.

atlcdp · Oct 18, 2014

I haven't forgotten your request. I made a prototype, but I did not like how it came out. I am going to try again this week and let you know.

atlcdp · Oct 18, 2014

I am working on this one also. I did not like the first prototype I made. It looked right, but not refined.

Tanarin said:
I think if you are going to turn this into a for profit business, then maybe some practice on nosecones are in order, especially with the closing of Semroc, I know there are some styles of nosecones that are not available in plastic ATM. For example I know I am looking for a replica to the BNC-20AZ nosecone for a mini mean machine scratch build. I know if you could get something with a similar look and weight, you could make a killing.

atlcdp · Oct 18, 2014

PM me you address. I'll print and ship next week.

dave carver said:
Bingo!!! Now what?

atlcdp · Oct 22, 2014

I am late, but do you still need help with this? I have some time and a working printer.

K'Tesh said:
I could really use some help with my nosecone for my L1 project... The original "bid" winner hasn't been back in touch w/me.

There may be a few minor alterations to the original .ork, so if you're interested, I'll get you the updated dimensions.

dave carver · Oct 22, 2014

atlcdp said:
I am late, but do you still need help with this? I have some time and a working printer.

Nobody will complain about the wait for free custom parts

I was contemplating having to build up blocks of balsa and hand carve the shape, something I wasn't looking forward to.

K'Tesh · Oct 23, 2014

atlcdp said:
I am late, but do you still need help with this? I have some time and a working printer.

Hi Andy,

No, I got that one made (it was for my OFFl Build).

However, if you'd like to try your had at a boat tail... PM me.

Thanks!
Jim

Pyropetepete · Oct 23, 2014

What printer did you get?

K'Tesh · Oct 23, 2014

Probably would help if I cleaned out my inbox...

atlcdp · Oct 24, 2014

Makerbot Replicator 2 5th Gen. I think if I had a second chance, I would go with the Cube from 3D Systems. I saw a demo of one not long ago. They work the same way, and the output is similar, but the Cube had a few features I liked.

Pyropetepete said:
What printer did you get?

rocketgeek101 · Oct 24, 2014

I think I mentioned this a few pages back, but maybe it was overlooked... would you be interested in doing a 29mm 5.9" long ogive nose cone for PML phenolic tubing? Could use it on a 29mm min-diameter project (might be even able to test it past mach 1...)

Pyropetepete · Oct 24, 2014

atlcdp said:
Makerbot Replicator 2 5th Gen. I think if I had a second chance, I would go with the Cube from 3D Systems. I saw a demo of one not long ago. They work the same way, and the output is similar, but the Cube had a few features I liked.

See the Cel Robox? Dual head 0.3 mm and 0.8 mm nozzle, dual material. Only let down is the small size of it

dave carver · Oct 28, 2014

Just checking, did you receive my PM with my address? I'd gladly pay shipping for the part, just let me know when it's coming. I'm ordering the 3" tube and centering rings from Balsa Machining Supply this week. I plan on it being my next project. Make that my next large project. I seem to have at least 1 under construction all the time

atlcdp · Oct 28, 2014

I shipped the part last week. Hopefully you will have it soon.

dave carver said:
Just checking, did you receive my PM with my address? I'd gladly pay shipping for the part, just let me know when it's coming. I'm ordering the 3" tube and centering rings from Balsa Machining Supply this week. I plan on it being my next project. Make that my next large project. I seem to have at least 1 under construction all the time

dave carver · Oct 28, 2014

atlcdp said:
I shipped the part last week. Hopefully you will have it soon.

Totally cool, I'm sure Santa will be extra nice to you this year

edit: hmmmm...tried to go to your .com and got the "Page Can't Be Displayed" message

atlcdp · Oct 30, 2014

What are the specs on the tubing? I need the inner and outer diameter. I can design a nose cone from there.

rocketgeek101 said:
I think I mentioned this a few pages back, but maybe it was overlooked... would you be interested in doing a 29mm 5.9" long ogive nose cone for PML phenolic tubing? Could use it on a 29mm min-diameter project (might be even able to test it past mach 1...)

RocketMike · Oct 30, 2014

I'm late to this party but have you considered some generic three and four fin, fin cans in various popular tube sizes?

rocketgeek101 · Oct 30, 2014

atlcdp said:
What are the specs on the tubing? I need the inner and outer diameter. I can design a nose cone from there.

Measured using digital calipers:
Outer diameter: 32.5mm
Inner diameter: 29.1mm

Thanks!

K'Tesh · Oct 30, 2014

I wanted to say thanks to Andy and show you what he made for me...

But first... The specifications:

a BT-60 to BT-50, Ogive, 3.7" long with a ledge inside (to prevent a coupler from sliding too far inside the boat tail). Pre-slotted for three, 1/8" thick, fins, with the seam centered on one of the slots . I'm figuring 1 to 1.5mm thick.

and the first draft:

The modifications:

I'd suggest removing the Centering ring a the top end, as that can be done with a fiber centering ring up inside the body tube (thus less material needed, as well as being lighter, and with less heat concerns). I'd probably use a CR5550 (centering ring for a BT-55 to BT-50) inside the boat tail as well (in combo w/the boat tail's wall).

And the results:

Looks GREAT!!! I'm going to be rolling in rockets...

Thanks Andy!

tim cubbedge · Oct 30, 2014

How about an AV bay sled, one that mounts with 1/4-20 all thread with 2" spacing?
I can email some details!

atlcdp · Nov 3, 2014

I have a hollow nosecone with a screw in plug. The plug fits inside the tube, 29.1mm with the nose cone haveing a full OD of 32.5mm. Do you want me to put air holes in the NC so you can put a small altimeter into it?

rocketgeek101 said:
Measured using digital calipers:
Outer diameter: 32.5mm
Inner diameter: 29.1mm

Thanks!

dave carver · Nov 3, 2014

I don't know what happened but I haven't received my adapter yet. Got a tube ordered, ran out of money so rings will have to wait until next payday so there's no hurry, I just wonder what part of the country it was sent to

rocketgeek101 · Nov 3, 2014

atlcdp said:
I have a hollow nosecone with a screw in plug. The plug fits inside the tube, 29.1mm with the nose cone haveing a full OD of 32.5mm. Do you want me to put air holes in the NC so you can put a small altimeter into it?

That's not necessary. I don't have any plans to have an altimeter onboard the rocket (and I can always drill some if I change my mind about that). Can an eyelet be screwed into the plug to act as a shock cord anchor?

atlcdp · Nov 4, 2014

PM me your address. See below for the completed product.

rocketgeek101 said:
That's not necessary. I don't have any plans to have an altimeter onboard the rocket (and I can always drill some if I change my mind about that). Can an eyelet be screwed into the plug to act as a shock cord anchor?

atlcdp · Nov 4, 2014

I would not trust the loop on the nose cone. The joint is not that strong. I recommend drilling a few small holes near the base of the loop and injecting a portion of 5 minute expoy or some other strengthener.

atlcdp said:
PM me your address. See below for the completed product.View attachment 245634 View attachment 245635 View attachment 245636

atlcdp · Nov 4, 2014

I have printed two of these. If you PM your address, I'll ship them too you.

Tanarin said:
I think if you are going to turn this into a for profit business, then maybe some practice on nosecones are in order, especially with the closing of Semroc, I know there are some styles of nosecones that are not available in plastic ATM. For example I know I am looking for a replica to the BNC-20AZ nosecone for a mini mean machine scratch build. I know if you could get something with a similar look and weight, you could make a killing.

rocketgeek101 · Nov 4, 2014

atlcdp said:
PM me your address. See below for the completed product.View attachment 245634 View attachment 245635 View attachment 245636

I just PM'd you my address.

Thank-you!!

atlcdp · Nov 6, 2014

This is done. PM me your address.

dave carver said:
The capsule is bigger around than the Redstone launch vehicle. The base is smaller diameter than the widest point of the capsule.

https://en.wikipedia.org/wiki/Project_Mercury#mediaviewer/File:Mercury-launch-vehicles.jpg

You can zoom in on the photos to get a better view. This SEMROC cone tapers to fill the underside of the Mercury Redstone. That's what I mean by sitting in a socket, at least for this cone for my intended application.

Here are your numbers;

B=2.82
D=2.65
E=1.00
C=3.00
A=2.93 and needs to be 2.5" long.

Thing here is B and D are inside of E. D starts 3/8ths" down from B.

What we have here is a cup with no bottom. The cone is going to be attached to the adapter and I'll eject the whole thing, adapter, cone, tower and all

dave carver · Nov 6, 2014

atlcdp said:
This is done. PM me your address.

Ok, Thanks a ton

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