Search found 26 matches

by JD13x
Sun Mar 20, 2016 8:40 pm
Forum: Research Rocket Motors
Topic: Scale? 10 kg to 0.1 g
Replies: 4
Views: 1064

Re: Scale? 10 kg to 0.1 g

I have 2 scales, one for 2600 gram with a 0.1 gram accuracy and the other is a 7 kg with a 1 gram accuracy.
The smaller is used for everything except measuring the binder.
by JD13x
Sun Mar 20, 2016 8:37 pm
Forum: Research Rocket Motors
Topic: Got my AG71/Gorilla cases in today!
Replies: 4
Views: 1310

Re: Got my AG71/Gorilla cases in today!

If they are all the same spec as AMW then, how come my AMW spiral rings won't fit into Aero pack retainers?
AMW's do without any mods??
by JD13x
Thu Mar 03, 2016 11:39 pm
Forum: Altimeter Data
Topic: RRC3 flights in #.0" Dark Star.
Replies: 2
Views: 1448

Re: RRC3 flights in #.0" Dark Star.

DarkStarFLT003Cap.JPG
by JD13x
Thu Mar 03, 2016 11:33 pm
Forum: Altimeter Data
Topic: RRC3 flights in #.0" Dark Star.
Replies: 2
Views: 1448

RRC3 flights in #.0" Dark Star.

I had 2 flights a the Feb MDRA launch First up was a 2G x 54 mm each grain was 3.3125" long Rocket weighed in at 11 lbs loaded. DSrJ4402g.JPG Second flight was on an older 38 mm x 740 Loki hardware with my blue propellant. only other difference was; it had a Mobius camera duct taped to the side...
by JD13x
Thu Mar 03, 2016 10:47 pm
Forum: MRSI Private Group
Topic: Grain display.
Replies: 15
Views: 1942

Re: Grain display.

Here is the entire batch that the moon burner came from. This will be the second batch of this propellant. I tweaked it a bit for better results and better density. The measured density of the grain posted earlier came out to 0.060 That is after subtracting the casting tube mass. I'll run some more ...
by JD13x
Thu Mar 03, 2016 10:41 pm
Forum: MRSI Private Group
Topic: Grain display.
Replies: 15
Views: 1942

Re: Grain display.

Dan, how well did the liner hold up?
I added some thermal tape to the cored side to help insulate it.
by JD13x
Thu Mar 03, 2016 10:39 pm
Forum: MRSI Private Group
Topic: Grain display.
Replies: 15
Views: 1942

Re: Grain display.

Same batch as first post without the mandrels:
2016-03-02 14.05.00-2.jpg
by JD13x
Thu Mar 03, 2016 12:35 am
Forum: MRSI Private Group
Topic: Grain display.
Replies: 15
Views: 1942

Re: Grain display.

One my Moon burners I'm working on.
54 mm x 3G Equivalent

2016-03-02 14.10.11.jpg


2016-03-03 00.7878958.JPG
by JD13x
Wed Mar 02, 2016 12:56 pm
Forum: MRSI Private Group
Topic: Grain display.
Replies: 15
Views: 1942

Re: Grain display.

Post pics of your grains!
by JD13x
Wed Mar 02, 2016 12:51 pm
Forum: MRSI Private Group
Topic: Grain display.
Replies: 15
Views: 1942

Grain display.

I started a thread a while back on the other forum and it was quite popular.
A thread to show off your grains.

IMG_20160216_221026857.jpg
My grain from last mix.
83% solid using 9% AL

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