Want!
Welcome back!Speaking of L1- after many dormant years, I can call myself an active HPR flier again!
Got my L1 at Turkey & GRITS this morning using the same rocket and motor that I used for L1 back in 1995. My trusty old Expediter with an H238T for a quick up and down as the range closed due to impending weather.
That same rocket was used for L2 on a J275 a year later and was last flown many years ago at Freedom Launch in Orangeburg when a hard landing wrinkled the airframe just above the fins.
Now and then I have a way of detecting misunderstandings. And sometimes I'm all wet.After an introduction to fuel types ("White Lightning," "Blue Thunder," etc.) it then walks through building a Cesaroni H163-14A and its corresponding fuel types ("Classic," "Imax," "Skidmark," etc.).
Now to get it to fly.................Received an order, built a rocket...
I definitely see it getting stuck in a tree when it does...Now to get it to fly.................
@GalantVR41062 I bought a small Sterilite airtight, gasketed storage container and drilled a small hole in the top. I have a small vacuum pump and I put a suction cup fitting (came with my MightyVac hand vacuum pump I use on my cars). I arm the Eggtimer, put it in the box & close the latches, fire up the vacuum pump and hold the suction pump on the top directly over the hole. it works great!Looking forward to sitting down this winter and soldering them up, then how do I test all 8 altimeters and 2 gps modules... custom sled for the 1/4 scale Viking 7 possibly.
~John
Great idea. I might give this one a go. I have a MightyVac. Just have to keep the brake fluid off the electronics...@GalantVR41062 I bought a small Sterilite airtight, gasketed storage container and drilled a small hole in the top. I have a small vacuum pump and I put a suction cup fitting (came with my MightyVac hand vacuum pump I use on my cars). I arm the Eggtimer, put it in the box & close the latches, fire up the vacuum pump and hold the suction pump on the top directly over the hole. it works great!
Now and then I have a way of detecting misunderstandings. And sometimes I'm all wet.
The above makes me suspect that maybe you got the impression that a given motor, like the H163, can comes in a variety of propellent types. Not so. The CTI H163 is a White Thunder load. Other 29 mm 3 grain loads, of other propellants, have other characteristics (except there are two Blue Streaks; go figure). Check out this CTI web page. The story is the same with AT, and all laid out in their catalog (web site).
And if I was all wet and you already knew all that, please forgive the unnecessary lecture.
Your welcome. Here is some mixed vids from the past and now.Thanks
It was a lot of fun and a lot of good people there .
We enjoy going there a lot
Nice jigs, and great idea for a party! What rockets are they going to build?I have had my new 3D printer making fin alignment jigs. The initial use will be at my son's 12th birthday party. He will have a couple friends over to build rockets in the evening, and Kansas-winds-permitting launch in the morning.
Wow...seeing the BB through its stages of completion, I was sledgehammered by the finished product. Looks fantastic!Finally finished... Almost a year in the making. I've had this one built, painted and flown for a while but never finished the decals. This was going to be a quick resto job of an old Bertha that was left for dead. When I got it the motor mount had been torn out the rear and it had a couple of broken fins. I removed the remaining fins, sanded them and the body tube down, cleaned out the inside of the tube and started reconstruction. I was able to reuse 3 of the 4 fins, the body tube and the nose cone.
Since I had to make a motor mount I decided to step things up. The main body tube received a full length coupler that stops about 3/4 from the top. A 24mm motor mount was built using heavy wall tubing and plywood rings. Due to the 24mm motor I didn't see the need for a stuffer tube. Next a 300# Kevlar leader is attached to the top of the upper ring and about 10ft of 1/4" elastic was attached. The base of the Bertha nose cone was chopped off and a bulk head was epoxied in with a screw eye.
The rocket was then painted with Krylon Hot Pepper Red and Black. It has flown in this condition on a C11-3, D12-5 and E20-7. Due to the extra weight the C11 makes this a nice small park flier while the D's still put it up around 700ft. We stuck an altimeter in it for the E20 flight and saw 1442 reading but that was at ejection not apogee.
Finally got a chance to paint the last color and do the decals. Painted one fin Krylon Dove Gray and cut my own decals.
First Pic is from the online ad.
Second is mid-way through the resto.
Last is the finished product.
Your welcome. Here is some mixed vids from the past and now.
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