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Ccolvin968

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Launched my F75 on a 29mm H123 Skidmark today on it's maiden flight and my first Certification attempt.
I really wanted a Skidmark for her first flight, but there were no 38mm H123's left so I bought the adapter and launched it on a 29mm.
I am now Level 1 certified and it was a bit of a scary launch.
A fellow club member let me borrow his Altimeter One. (After the flight, he let me keep it!)
Putting it on the pad, inserting the igniter, hooking up the leads... It all just kept building up.
Finally... T minus 5... 4... 3... 2... 1... The unmistakable sound from a Skidmark and sparks and smoke to accompany it.
It shoots up to 874 ft. Determined by altimeter, my predicted altitude was 913... pretty close.
I don't think I trimmed the delay portion enough. It was a H123-12. I trimmed it down to 7... Or so I thought.
I don' think I pressed it down hard enough, so it ended up being closer to an H123-9.
It fell pretty quick, and the chute opened at about 350-400 ft. Everyone was yelling to look out and the airhorn was blasting.
Luckily, the chute was fine and the shock cords did their job despite the decent velocity it was falling at.
All is well, and I managed a second flight on an H140-7, (actually 7 seconds this time, made EXTRA sure of it).
I hit 1240 ft. on this one, and our ceiling was 2500 today due to low clouds. Our waiver is always to 20,000 at our launch site.
Long story short, it was a great day, I'm Level 1 certified, I still have a rocket in one piece, and flyable after two launches.
All in all, it was a good day!

IMG_0171.jpg
 

K'Tesh

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MikeyDSlagle

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Congratulations. Not hijacking but I got mine yesterday so I know the feeling. I will have a thread on the flight soon.
 
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kcobbva

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Rock on! That's a great feeling I still remember! Congratulations!
 

scsager

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Congrats - Nice looking rocket... and equally nice looking launch site. :)
 

JP Morgan

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Congratulations!
Good job and a nice looking rocket too.
 

KenRico

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Nice write up and picture !

We all expect you to break 1k with your next Level 1 flight !

Congratutions from the gang in San Diego

Kenny
 

Cabernut

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Congratulations!

That is a very nice field. Big, flat with golf course level grass. Perfect.
 

Rex R

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congratulations. welcome to high power rocketry. open your wallet :).
Rex
 

OverTheTop

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Congratulations on your L1, both of you! Welcome to HPR :)

Enjoy the journey, wherever you choose to go!
 

Forever_Metal

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Launched my F75 on a 29mm H123 Skidmark today on it's maiden flight and my first Certification attempt.
I really wanted a Skidmark for her first flight, but there were no 38mm H123's left so I bought the adapter and launched it on a 29mm.
I am now Level 1 certified and it was a bit of a scary launch.
A fellow club member let me borrow his Altimeter One. (After the flight, he let me keep it!)
Putting it on the pad, inserting the igniter, hooking up the leads... It all just kept building up.
Finally... T minus 5... 4... 3... 2... 1... The unmistakable sound from a Skidmark and sparks and smoke to accompany it.
It shoots up to 874 ft. Determined by altimeter, my predicted altitude was 913... pretty close.
I don't think I trimmed the delay portion enough. It was a H123-12. I trimmed it down to 7... Or so I thought.
I don' think I pressed it down hard enough, so it ended up being closer to an H123-9.
It fell pretty quick, and the chute opened at about 350-400 ft. Everyone was yelling to look out and the airhorn was blasting.
Luckily, the chute was fine and the shock cords did their job despite the decent velocity it was falling at.
All is well, and I managed a second flight on an H140-7, (actually 7 seconds this time, made EXTRA sure of it).
I hit 1240 ft. on this one, and our ceiling was 2500 today due to low clouds. Our waiver is always to 20,000 at our launch site.
Long story short, it was a great day, I'm Level 1 certified, I still have a rocket in one piece, and flyable after two launches.
All in all, it was a good day!
Nice to see folks picking up L1. Keeps this hobby moving forward!

GJ CC!

fm
 

Ccolvin968

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My launch site is in North Branch, Minnesota. We have waivers to 20,000 ft.
Thanks for all of the well wishes!
 

RocketFeller

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Congratulations - that sounds like a real butt-clencher of a flight, but I'm glad it all worked out!
 

Crash-n-Burn

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Congrats to both of you, that is a nice accomplishment to close out the year.
 

NateLowrie

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Congrats!

Regarding the delays: Motor delays are finicky things. The manufacturers spec them at +/- 10%. When you drill the delay any deviation from spec has a chance to be magnified.

Complicating matters, the longer a delay grain ages, the greater the delay tends be. Note this shouldn't after the motor if it's less than 2 years old. I do have some 9 year old delay grains that are essentially twice as long as stated.

Sometimes the delay is shorter too, for unexplained. I had one flight in September where I drilled the delay correctly for 11 seconds and the motor ejection charge fired about 4 seconds in right after motor burnout. The delay charged looked exactly like it was supposed to and I didn't get a blow through. It just went early for some reason.

If you can move to electronics you'll get a lot better timing on the ejection charges.
 

Ccolvin968

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I plan on moving to electric deployment for sure.
I just want a to launch this a few more times with very basic stuff, then get into the nutty gritty stuff.
Already looking for my next FG rocket!!
I have the bug!! Lol
 
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