Quantcast

3D Printing Looking for Electronics "Sled" designs for a 5.5" Airframe

The Rocketry Forum

Help Support The Rocketry Forum:

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
Some of fiberglass 5.5" rockets come with 14" long electronics couplers, mine did, and I was wondering what designs I might look to print for just such a space(?) I have all of two RRC2L's and a couple batteries that I need to Jam in the bay, and I guess I do not need to get to complex.

I had considered just mounting one of the 4" orange designs from Additive Aerospace, but they mount on 1/4-20 rod, and these larger kits come with 5/16-18 rods and hardware I believe.

Anyway, I am honestly brain farting here, and suggestions would be most welcome.
 

QFactor

L2 - NAR & TRA
Joined
Nov 6, 2019
Messages
114
Reaction score
61
Location
Ohio
Some of fiberglass 5.5" rockets come with 14" long electronics couplers, mine did, and I was wondering what designs I might look to print for just such a space(?) I have all of two RRC2L's and a couple batteries that I need to Jam in the bay, and I guess I do not need to get to complex.

I had considered just mounting one of the 4" orange designs from Additive Aerospace, but they mount on 1/4-20 rod, and these larger kits come with 5/16-18 rods and hardware I believe.

Anyway, I am honestly brain farting here, and suggestions would be most welcome.
Can you just go "old school" with a plywood sled and brass tubes?

IMG_6763.JPG IMG_7006.JPG IMG_6769.JPG
 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
That is of course always a possibility, but for this build I wanted to print features that I would normally glue or bolt to a plate. I used a design similar to yours for my L3 12-years ago, but now that I am printing more...
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
25,467
Reaction score
3,417
Location
Glennville, GA
3d printed Of just old school?
 

o1d_dude

'I battle gravity'
TRF Supporter
Joined
Jan 18, 2009
Messages
8,238
Reaction score
1,098
Location
Planet Urff
Additive Aerospace might be able to provide you one to accommodate the larger all thread.

Never hurts to ask.
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
25,467
Reaction score
3,417
Location
Glennville, GA
What size all thread? The diameter of the couple?
 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
I believe the all-threads are 5/16-18, and the internal coupler diameter in 5.282"ø X 17" long.
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
25,467
Reaction score
3,417
Location
Glennville, GA
If not responds by the weekend, I might try a design.
 

Cl(VII)

Chris Bender, Lab Rat
TRF Sponsor
Joined
Feb 22, 2013
Messages
4,369
Reaction score
540
Do you need it to be full length, or just long enough to hold the alts, batteries, and switches? Kinda, suspended in the middle of the bay by nuts on the all thread holding it in place.
 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
If not responds by the weekend, I might try a design.
Yeah, we are looking at a rainy ending to the week, and I thought I might do the same, thanks!


Do you need it to be full length, or just long enough to hold the alts, batteries, and switches? Kinda, suspended in the middle of the bay by nuts on the all thread holding it in place.
Very similar to what you just wrote I suppose, there will ample room for wires etc.
 

ttabbal

Well-Known Member
Joined
Jan 19, 2009
Messages
1,064
Reaction score
22
IMG_20170802_010549.jpg



Would something like that work for you? You might need to mod it a little before printing to match your setup, and it was used for a 6" rather than 5.5", but it might well fit, it was so spacious in there I didn't bother trying to fill it completely.
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
25,467
Reaction score
3,417
Location
Glennville, GA
I would be interested. Have you thought about Thingverse?
 

ttabbal

Well-Known Member
Joined
Jan 19, 2009
Messages
1,064
Reaction score
22
I would be interested. Have you thought about Thingverse?
I'm happy to share it. I do have an account there, but I wasn't sure if it would be worth the trouble to post. I'll get it set up and post the link here.
 

ttabbal

Well-Known Member
Joined
Jan 19, 2009
Messages
1,064
Reaction score
22

I hope it's helpful for some people.

I had it on there, but I don't see it now. The inserts I used are these.

 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
I modeled up a simple design over the weekend; the design holds two 9V batteries, and two RRC2L altimeters. Nothing too fancy, and the design definitely will not fill a 15" X 5.2" ebay volume.

DX3_E-BAY_SLED.jpg


DX3_E-BAY_SLED-02.jpg


I am currently printing a proof for fitment of batteries and altimeter. If all looks good, I will design in the "little features" that aid in wire management.

IMG_0520.jpg
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
25,467
Reaction score
3,417
Location
Glennville, GA
I do like that design.
 

Michael L

Random Pixel Generator
TRF Supporter
Joined
Sep 22, 2020
Messages
28
Reaction score
25
Location
TX and NM
I'm glad to find this area of the forum. I was told this was a great forum!!

I have a 3-D printer coming... or will when they ship it and I've been working on learning Fusion 360. I have had the pay version of Eagle for a while and I added Fusion 360 last year. Yes... it has taken me a year to decide which printer to buy and then another month to decide to buy it.
 

cwbullet

Obsessed with Rocketry
Staff member
Administrator
TRF Lifetime Supporter
Global Mod
Joined
Jan 24, 2009
Messages
25,467
Reaction score
3,417
Location
Glennville, GA
How are you going to attach the switch?
 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
The two switches will attach to the switch-band and will wire direct to the altimeters.
 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
Over-all the proof part proved the concept. The changes that were noted have been incorporated into the final design which include; a wider cut to allow for easier battery insertion and removal; and a thinner boss where the altimeters will mount (also allows easier battery removal. Slots were added for wire tie management. The sled design is simple, and dedicated to the RRC2L altimeters only, so if I decided to run a different altimeter, I would have to modify and print another configuration of the sled.

Final print will utilize Hatchbox PETG in Orange:

DX3_SLED01.jpg


DX3_SLED02.jpg

DX3_SLED03.jpg
 

DRAGON64

Well-Known Member
Joined
Jan 18, 2009
Messages
4,191
Reaction score
213
Location
Toney, AL
Printing of the first usable revised sled design has completed; but before I continue, I wanted to thank everyone for input ideas and inspiration for this design.

Printing finished last night (duration: 25-hour time). Here is what I set the print to:

Ulitmaker Cura 4.5.0

Hatchbox: Orange PETG (1.75mm)
Standard Quality 0.2mm
4 layers each on walls, base and top
100% infill
240° nozzle
75° Build Plate
Pattern: Concentric
Fan Speed: 50%

**more specs can be provided if needed**

The design is based on .094" wall thickness, including the battery lids.

IMG_0532.jpg


IMG_0535.jpg


IMG_0534.jpg
 
Top