Rocketry Data Wiki - User contributions [en]

Strength of Materials Index

2026-02-24T03:06:31Z

Rocketrydata: /* Tubes */

The following is an archive of the [[Strength of Materials]] website created by Drake Damerau
----

== Glue ==
* [[Various Epoxy / Fin Material]]

== Tubes ==
* [[Axial Tube Crush]]
* [[Other (Tubes)]]

== Fins ==
* [[3 Point Bend]]
* [[Fin Can Test]]
* [[Tension]]
* [[Other (Fins)]]

== Hardware ==
* [[Swivels]]
* [[Quick Links]]
* [[Motor Retainers]]
* [[Other (Rocket Hardware)]]

== Recovery ==
* [[Knots]]
* [[Shock Cords]]
* [[Sewing]]
* [[Shear Pins]]
* [[Other (Recovery)]]

== Model Rocketry Data ==
* [[Styrene Glue Test]]

Various Epoxy / Fin Material

2025-12-27T20:31:14Z

Rocketrydata:

The following is an archive of the [[Strength of Materials]] website created by Drake Damerau
----
John's Fin/Glue Tensile Samples (detailed construction and results notes*)
{| class="wikitable" style="margin:auto"
|-
!Test !! Material !! Glue Used !! Notes !! Peak Load (lbs)
|-
| 1-1A || G-10 || Bob Smith || Picture After Test || 503.131
|-
| 1-1B || G-10 || Bob Smith || Close Up Pic || 441.942
|-
| 1-1C || G-10 || Bob Smith || || 508.475
|-
| 1-2-A || G-10 || West Systems || Close Up Pic || 2379.331
|-
| 1-2-B || G-10 || West Systems || || 2337.961
|-
| 1-2-C || G-10 || West Systems || || 2322.104
|-
| 1-3-A || G-10 || Aeropoxy PR2032 || || 1937.386
|-
| 1-3-B || G-10 || Aeropoxy PR2032 || || 2037.357
|-
| 1-3-C || G-10 || Aeropoxy PR2032 || || 1662.633
|-
| 1-4-A || G-10 || Aeropoxy EX6209 || || 2574.789
|-
| 1-4-B || G-10 || Aeropoxy EX6209 || || 2383.984
|-
| 1-4-C || G-10 || Aeropoxy EX6209 || || 2239.198
|-
| 1-1-D || 5 ply || Bob Smith || Picture After Test || 1016.953
|-
| 1-1-E || 5 Ply || Bob Smith || || 1337.724
|-
| 1-1-F || 5 Ply || Bob Smith || || 950.419
|-
| 1-2-D || 5 Ply || West Systems || || 986.271
|-
| 1-2-E || 5 Ply || West Systems || || 1034.878
|-
| 1-2-F || 5 Ply || West Systems || || 1171.047
|-
| 1-3-D || 5 Ply || Aeropoxy PR2032 || || 1263.091
|-
| 1-3-E || 5 Ply || Aeropoxy PR2032 || || 977.309
|-
| 1-3-F || 5 Ply || Aeropoxy PR2032 || || 825.455
|-
| 1-4-D || 5 Ply || Aeropoxy EX6209 || || 2047.869
|-
| 1-4-E || 5 Ply || Aeropoxy EX6209 || || 1829.139
|-
| 1-4-F || 5 Ply || Aeropoxy EX6209 || || 2337.961
|-
| 1-10-A || Glassed 5 Ply || West Sys 105/206 || || 1909.807
|-
| 1-10-B || Glassed 5 Ply || West Sys 105/206 || Typical Break || 1800.010
|-
| 1-10-C || Glassed 5 Ply || West Sys 105/206 || || 1749.851
|-
| 1-11-A || Glassed 5 Ply || Aeropoxy EX6209/PR2032 || || 1933.147
|-
| 1-11-B || Glassed 5 Ply || Aeropoxy EX6209/PR2032 || || 2300.385
|-
| 1-11-C || Glassed 5 Ply || Aeropoxy EX6209/PR2032 || || 1900.843
|}

*Click on the link under material. There, you will see a picture of the test specimen. The two pieces are glued together at the overlap. The glued area is 1.0" x 1.5". The sample here is pulled apart. This tests the shear strength of the glue joint.

John's Fin/Glue Tensile Samples Recycled

I took several of John's samples and re-glued them on the opposite side. The samples were flipped over lightly sanded and glued. The specimens have the same amount of area glued but were done a little differently. John glued whole sheets then cut them where I glued the already cut pieces. The different construction methods explain the wider sample to sample variation seen in the recycled samples over John's samples. The CY was applied to both pieces before assembly. The CY actually delaminated the fiberglass when broke. (photos)

{| class="wikitable" style="margin:auto"
|-
! Test !! Material !! Glue Used !! Notes !! Peak Load (lbs)
|-
| R1 || G-10 || Super Jet - Cyanoacrylate || || 2715.958
|-
| R2 || G-10 || Super Jet - Cyanoacrylate || Delamination! || 3346.816
|-
| R3 || G-10 || Super Jet - Cyanoacrylate || || 2685.450
|-
| R4 || G-10 || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 2401.207
|-
| R5 || G-10 || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 2119.919
|-
| R6 || G-10 || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 2366.401
|-
| R7 || G-10 || West Systems || 2 Years Old || 2303.156
|-
| R8 || G-10 || West Systems || 2 Years Old || 2291.224
|-
| R9 || G-10 || West Systems || 2 Years Old || 2288.344
|-
| R10 || 5 Ply || Super Jet - Cyanoacrylate || || 724.449
|-
| R11 || 5 Ply || Super Jet - Cyanoacrylate || || 1011.781
|-
| R12 || 5 Ply || Super Jet - Cyanoacrylate || || 904.399
|-
| R13 || 5 Ply || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 1093.483
|-
| R14 || 5 Ply || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 1160.705
|-
| R15 || 5 Ply || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 1024.537

Various Epoxy / Fin Material

2025-12-27T20:30:49Z

Rocketrydata:

The following is an archive of the [[Strength of Materials]] website created by Drake Damerau
----
John's Fin/Glue Tensile Samples (detailed construction and results notes*)
{| class="wikitable" style="margin:auto"
|-
!Test !! Material !! Glue Used !! Notes !! Peak Load (lbs)
|-
| 1-1A || G-10 || Bob Smith || Picture After Test || 503.131
|-
| 1-1B || G-10 || Bob Smith || Close Up Pic || 441.942
|-
| 1-1C || G-10 || Bob Smith || || 508.475
|-
| 1-2-A || G-10 || West Systems || Close Up Pic || 2379.331
|-
| 1-2-B || G-10 || West Systems || || 2337.961
|-
| 1-2-C || G-10 || West Systems || || 2322.104
|-
| 1-3-A || G-10 || Aeropoxy PR2032 || || 1937.386
|-
| 1-3-B || G-10 || Aeropoxy PR2032 || || 2037.357
|-
| 1-3-C || G-10 || Aeropoxy PR2032 || || 1662.633
|-
| 1-4-A || G-10 || Aeropoxy EX6209 || || 2574.789
|-
| 1-4-B || G-10 || Aeropoxy EX6209 || || 2383.984
|-
| 1-4-C || G-10 || Aeropoxy EX6209 || || 2239.198
|-
| 1-1-D || 5 ply || Bob Smith || Picture After Test || 1016.953
|-
| 1-1-E || 5 Ply || Bob Smith || || 1337.724
|-
| 1-1-F || 5 Ply || Bob Smith || || 950.419
|-
| 1-2-D || 5 Ply || West Systems || || 986.271
|-
| 1-2-E || 5 Ply || West Systems || || 1034.878
|-
| 1-2-F || 5 Ply || West Systems || || 1171.047
|-
| 1-3-D || 5 Ply || Aeropoxy PR2032 || || 1263.091
|-
| 1-3-E || 5 Ply || Aeropoxy PR2032 || || 977.309
|-
| 1-3-F || 5 Ply || Aeropoxy PR2032 || || 825.455
|-
| 1-4-D || 5 Ply || Aeropoxy EX6209 || || 2047.869
|-
| 1-4-E || 5 Ply || Aeropoxy EX6209 || || 1829.139
|-
| 1-4-F || 5 Ply || Aeropoxy EX6209 || || 2337.961
|-
| 1-10-A || Glassed 5 Ply || West Sys 105/206 || || 1909.807
|-
| 1-10-B || Glassed 5 Ply || West Sys 105/206 || Typical Break || 1800.010
|-
| 1-10-C || Glassed 5 Ply || West Sys 105/206 || || 1749.851
|-
| 1-11-A || Glassed 5 Ply || Aeropoxy EX6209/PR2032 || || 1933.147
|-
| 1-11-B || Glassed 5 Ply || Aeropoxy EX6209/PR2032 || || 2300.385
|-
| 1-11-C || Glassed 5 Ply || Aeropoxy EX6209/PR2032 || || 1900.843
|}

*Click on the link under material. There, you will see a picture of the test specimen. The two pieces are glued together at the overlap. The glued area is 1.0" x 1.5". The sample here is pulled apart. This tests the shear strength of the glue joint.

John's Fin/Glue Tensile Samples Recycled

I took several of John's samples and re-glued them on the opposite side. The samples were flipped over lightly sanded and glued. The specimens have the same amount of area glued but were done a little differently. John glued whole sheets then cut them where I glued the already cut pieces. The different construction methods explain the wider sample to sample variation seen in the recycled samples over John's samples. The CY was applied to both pieces before assembly. The CY actually delaminated the fiberglass when broke. (photos)

{|
|-
! Test !! Material !! Glue Used !! Notes !! Peak Load (lbs)
|-
| R1 || G-10 || Super Jet - Cyanoacrylate || || 2715.958
|-
| R2 || G-10 || Super Jet - Cyanoacrylate || Delamination! || 3346.816
|-
| R3 || G-10 || Super Jet - Cyanoacrylate || || 2685.450
|-
| R4 || G-10 || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 2401.207
|-
| R5 || G-10 || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 2119.919
|-
| R6 || G-10 || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 2366.401
|-
| R7 || G-10 || West Systems || 2 Years Old || 2303.156
|-
| R8 || G-10 || West Systems || 2 Years Old || 2291.224
|-
| R9 || G-10 || West Systems || 2 Years Old || 2288.344
|-
| R10 || 5 Ply || Super Jet - Cyanoacrylate || || 724.449
|-
| R11 || 5 Ply || Super Jet - Cyanoacrylate || || 1011.781
|-
| R12 || 5 Ply || Super Jet - Cyanoacrylate || || 904.399
|-
| R13 || 5 Ply || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 1093.483
|-
| R14 || 5 Ply || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 1160.705
|-
| R15 || 5 Ply || Dexter Hysol Epoxy-Patch || Thick, good on fillets || 1024.537

Various Epoxy / Fin Material

2025-12-27T19:14:31Z

Rocketrydata: Created page with "The following is an archive of the Strength of Materials website created by Drake Damerau ----"

The following is an archive of the [[Strength of Materials]] website created by Drake Damerau
----

Strength of Materials Index

2025-12-27T19:13:37Z

Rocketrydata: Created page with "The following is an archive of the Strength of Materials website created by Drake Damerau ---- == Glue == * Various Epoxy / Fin Material == Tubes == * Side Loading * Axial Tube Crush * Other (Tubes) == Fins == * 3 Point Bend * Fin Can Test * Tension * Other (Fins) == Hardware == * Swivels * Quick Links * Motor Retainers * Other (Rocket Hardware) == Recovery == * Knots * Shock Cords * Sewing * Shear..."

The following is an archive of the [[Strength of Materials]] website created by Drake Damerau
----

== Glue ==
* [[Various Epoxy / Fin Material]]

== Tubes ==
* [[Side Loading]]
* [[Axial Tube Crush]]
* [[Other (Tubes)]]

== Fins ==
* [[3 Point Bend]]
* [[Fin Can Test]]
* [[Tension]]
* [[Other (Fins)]]

== Hardware ==
* [[Swivels]]
* [[Quick Links]]
* [[Motor Retainers]]
* [[Other (Rocket Hardware)]]

== Recovery ==
* [[Knots]]
* [[Shock Cords]]
* [[Sewing]]
* [[Shear Pins]]
* [[Other (Recovery)]]

== Model Rocketry Data ==
* [[Styrene Glue Test]]

Strength of Materials

2025-12-27T19:09:37Z

Rocketrydata:

The following is an archive of the [[Strength of Materials]] website created by Drake Damerau
----
The first and only site with extensive, real data for everything having to do with high power hobby rocketry.

How many different times has the question been asked, "What is the best glue?" or "What is the best fin material?" for hobby rocketry. Pose any of those questions to experienced rocket folks, and you'll receive many different answers from many people. However, there is a clear alternative to the scenario posed above — it's called real data, and it's the only way to separate fact from fiction, opinion, views, beliefs, estimations and personal judgments.

By checking out real data on a myriad of different products and materials, you can quickly and accurately gauge what will suit your needs the best. No longer is "Oh, that'll be good enough" and "Yeah, you'll be just fine" needed to determine whether or not your rocket will hold together during flight, but simply...

: '''"In God we trust, all others bring data."'''

There is no charge for material testing and the data is not sold — this is a free service to the hobby rocketry community.

[[Strength of Materials Index]]

Strength of Materials

2025-12-27T19:09:08Z

Rocketrydata:

Strength of Materials

2025-12-27T19:08:47Z

Rocketrydata: Created page with "The following is an archive of the Strength of Materials website created by Drake Damerau ---- The first and only site with extensive, real data for everything having to do with high power hobby rocketry. How many different times has the question been asked, "What is the best glue?" or "What is the best fin material?" for hobby rocketry. Pose any of those questions to experienced rocket folks, and you'll receive many different answers from many people. However, ther..."

Main Page

2025-12-27T19:05:54Z

Rocketrydata:

Welcome to the Rocketry Data site!

What is this site about? Simply put, a large portion of the rocketry hobby is dominated by "rules of thumb" and "guidelines" that are often best described as "George Smith did this 25 years ago, it worked, so it's how we do it." Rather than just winging it, we're all better served by making decisions on data.

As W. Edwards Deming put it, "In God we trust; all others bring data."

In the early 2000s, [[Drake Damerau]] begin a [[Strength of Materials]] site, using lab equipment he had access to in order to perform real tests. That site is no longer online and we lost Drake in 2022. The content he curated has been copied here, and he is credited on those pages.

If you have data you'd like to add, please reach out - the goal is to collect relevant data from as many sources as possible.

Main Page

2025-12-27T19:04:16Z

Rocketrydata:

Welcome to the Rocketry Data site!

What is this site about? Simply put, a large portion of the rocketry hobby is dominated by "rules of thumb" and "guidelines" that are often best described as "George Smith did this 25 years ago, it worked, so it's how we do it." Rather than just winging it, we're all better served by making decisions on data.

As W. Edwards Deming put it, "In God we trust; all others bring data."

In the early 2000s, Drake Damerau begin a [Strength of Materials](/strength_of_materials) site, using lab equipment he had access to in order to perform real tests. That site is no longer online and we lost Drake in 2022. The content he curated has been copied here, and he is credited on those pages.

If you have data you'd like to add, please reach out - the goal is to collect relevant data from as many sources as possible.

Main Page

2025-09-26T02:19:55Z

Rocketrydata:

Welcome to the Rocketry Data site!

What is this site about? Simply put, a large portion of the rocketry hobby is dominated by "rules of thumb" and "guidelines" that are often best described as "George Smith did this 25 years ago, it worked, so it's how we do it." Rather than just winging it, we're all better served by making decisions on data.

As W. Edwards Deming put it, "In God we trust; all others bring data."

In the early 2000s, Drake Damerau begin a Strength of Materials site, using lab equipment he had access to in order to perform real tests. That site is no longer online and we lost Drake in 2022. The content he curated has been copied here, and he is credited on those pages.

If you have data you'd like to add, please reach out - the goal is to collect relevant data from as many sources as possible.