L2200 assembly instructions

[SDramstad]

I had heard that the grains for the L2200 had to be glued in place in the liner. I didnt want to break open the packaging to get to the instructions so I went to Aerotechs website and looked at the assembly instructions online. No mention at all of needing to glue them in. Did I hear wrong or are the online instructions out of date? Who glues and who doesnt?

https://www.aerotech-rocketry.com/uploads/0bde38ed-d2ee-49de-a23f-cbbbf0281f1a_75_5120g_in_20086.pdf

Steve

 

[tim cubbedge]

Yes, grains need to be bonded. There was a service bulletin put out in 2016. Here is the link. It's about 2/3 down the page.
https://www.aerotech-rocketry.com/news.aspx?y=2016
Elmer's Glue All Max is what they recommend & it is what most people use.
https://elmers.com/product/detail/e9416

 

[tim cubbedge]

Here is a link to the instructions and they should be included with the reload.
https://www.aerotech-rocketry.com/u...201d9280_Grain Bonding Instructions Small.pdf

 

[SDramstad]

Cool, thanks! Wish they would mention that on the online instructions....

 

[SDramstad]

Now the instructions on the Glueall max says to get the surfaces wet. Does anyone do that or is the humidity in the air enough to do the job.

 

[rharshberger]

Now the instructions on the Glueall max says to get the surfaces wet. Does anyone do that or is the humidity in the air enough to do the job.

You should dampen the surfaces as instructed, the polyurethane glues use the moisture to cure. The area between the liner and casting tube wont get much moisture from the air due to the close fit of the two parts.

 

[Nytrunner]

Do present day units of these motors come with a grain-bonding card or notice in the reload?

If not, not everyone will get that advisory. I witnessed Louisville torch 2 boosters with the L2200 before they became aware of the procedure.

 

[SDramstad]

I havent opened the kit yet but will post if it does when I use it. Hopefully that will be at Mini Midwest Power weekend after next.

 

[ATGM]

Do present day units of these motors come with a grain-bonding card or notice in the reload?

If not, not everyone will get that advisory. I witnessed Louisville torch 2 boosters with the L2200 before they became aware of the procedure.

We implemented the new instructions last year so any motors that require bonding do come with the grain bonding advisory now.

 

[rfjustin]

Not the motor you will be using, but you may find this show and tell helpful...