SemRoc Estes Midget
#1 SemRoc Estes Midget
Started building the Midget this past week. This one is a Carl's Semroc version. No pictures yet.
Commander
Starport Sagitta
NAR No.97971
Starport Sagitta
NAR No.97971
#2 Re: SemRoc Estes Midget
Haven't had much time to work on this, even though I meant it as a quickie build and launch. Better days are coming though and I have been able to at least take a couple of pics
The balsa filler coat has been brushed on and I started sanding the sustainer's fins. If only Cortana would take dictation, I could write posts while sanding.
The balsa filler coat has been brushed on and I started sanding the sustainer's fins. If only Cortana would take dictation, I could write posts while sanding.
Commander
Starport Sagitta
NAR No.97971
Starport Sagitta
NAR No.97971
- Trident
- Space Chief Petty officer
- Posts: 123
- Joined: Wed, 30 Mar 16, 16:02 pm
- Location: Fort Collins, CO
#3 Re: SemRoc Estes Midget
A neat little classic! Why is it I am so drawn to some of the simple little rockets from a 1/2 century ago? Well, for one, I guess it's because I could afford the simple little ones a 1/2 century ago! I could never afford a big Saturn, or a Mars Lander.
I was also a huge fan of stagers. My first was the Apogee II.
Looking forward to seeing this one completed, so let's get moving on this!
I was also a huge fan of stagers. My first was the Apogee II.
Looking forward to seeing this one completed, so let's get moving on this!
Lee
Bulds: Estes Saturn V, Super Sky Hook, Farside-X
Awaiting Paint/Detailing: Estes Saturn 1B
Completed!: Der Saturn Max, Bandit XL
Bulds: Estes Saturn V, Super Sky Hook, Farside-X
Awaiting Paint/Detailing: Estes Saturn 1B
Completed!: Der Saturn Max, Bandit XL
#4 Re: SemRoc Estes Midget
I would like to say it surprises me when I put the first primer coat on a rocket to see all the blemishes and imperfections, but it really doesn't after all these years.
Fill and primer sprayed, pics in the morning or sometime soon.
Fill and primer sprayed, pics in the morning or sometime soon.
Commander
Starport Sagitta
NAR No.97971
Starport Sagitta
NAR No.97971
- Trident
- Space Chief Petty officer
- Posts: 123
- Joined: Wed, 30 Mar 16, 16:02 pm
- Location: Fort Collins, CO
#5 Re: SemRoc Estes Midget
Secret I learned from a John Boren (head of Estes R&D). A bunch of us hung out drinking beers and talking rockets one evening at NSL last month. Pried as much as we could out of John.
Use a good filler-primer, load the rocket with several heavy coats. (John doesn't even use sanding sealer on fins and nose cone.) Wet sand using a sanding sponge from Harbor Freight. They are cheap, $5.99 for 6. Repeat if seams aren't filled, or if grain shows. I did this routine twice, and everything was incredibly smooth. I had already used Sanding Sealer on fins, and may continue to do so. But John's rockets were flawless, so the technique works.
Note: I found the sponges to be a little thick. I ran them upright thru my bandsaw to make them thinner and more flexible.
Use a good filler-primer, load the rocket with several heavy coats. (John doesn't even use sanding sealer on fins and nose cone.) Wet sand using a sanding sponge from Harbor Freight. They are cheap, $5.99 for 6. Repeat if seams aren't filled, or if grain shows. I did this routine twice, and everything was incredibly smooth. I had already used Sanding Sealer on fins, and may continue to do so. But John's rockets were flawless, so the technique works.
Note: I found the sponges to be a little thick. I ran them upright thru my bandsaw to make them thinner and more flexible.
Lee
Bulds: Estes Saturn V, Super Sky Hook, Farside-X
Awaiting Paint/Detailing: Estes Saturn 1B
Completed!: Der Saturn Max, Bandit XL
Bulds: Estes Saturn V, Super Sky Hook, Farside-X
Awaiting Paint/Detailing: Estes Saturn 1B
Completed!: Der Saturn Max, Bandit XL
#6 Re: SemRoc Estes Midget
Anyways, that's not quite what I was concerned about on this build. Because I was trying to push a quickie build, I neglected to coat the reducer cone with CNA to stiffen it. This has caused sections of the cone to pull away and create a gap at the joint with the body tube as the cone flexes under handling.
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Commander
Starport Sagitta
NAR No.97971
Starport Sagitta
NAR No.97971
- Trident
- Space Chief Petty officer
- Posts: 123
- Joined: Wed, 30 Mar 16, 16:02 pm
- Location: Fort Collins, CO
#7 Re: SemRoc Estes Midget
Bernie,
Try brushing some thin CA onto the paper cone, right on top of the primer. I often drip thin CA where I want it, and use a Q-tip to spread it around. It should help to toughen the paper. If needed, you could even apply some Bondo Spot Putty or Squadron Putty over the sanded CA if there are any indentations. I've used CA a lot to toughen paper on a rocket, then filled any imperfections. All it takes is lots of patience!
Try brushing some thin CA onto the paper cone, right on top of the primer. I often drip thin CA where I want it, and use a Q-tip to spread it around. It should help to toughen the paper. If needed, you could even apply some Bondo Spot Putty or Squadron Putty over the sanded CA if there are any indentations. I've used CA a lot to toughen paper on a rocket, then filled any imperfections. All it takes is lots of patience!
Lee
Bulds: Estes Saturn V, Super Sky Hook, Farside-X
Awaiting Paint/Detailing: Estes Saturn 1B
Completed!: Der Saturn Max, Bandit XL
Bulds: Estes Saturn V, Super Sky Hook, Farside-X
Awaiting Paint/Detailing: Estes Saturn 1B
Completed!: Der Saturn Max, Bandit XL
#8 Re: SemRoc Estes Midget
I actually ended up using some bondo glazing & pot putty. Here are some pictures from tonight, I gave it a coat of Krylon silver. Boy do the defects start popping out (although they are not readily visible in the pictures).
Commander
Starport Sagitta
NAR No.97971
Starport Sagitta
NAR No.97971
- luke strawwalker
- Space Admiral
- Posts: 1545
- Joined: Thu, 07 Apr 16, 04:45 am
#9 Re: SemRoc Estes Midget
POT putty?? That stuff imported from northern California, Washington state, or Colorado?? LOL:)Commander wrote:I actually ended up using some bondo glazing & pot putty. Here are some pictures from tonight, I gave it a coat of Krylon silver. Boy do the defects start popping out (although they are not readily visible in the pictures).
P7090005.JPGP7090002.JPG
I prefer SPOT putty myself... LOL:)
Later! OL J R
My MUNIFICENCE is BOUNDLESS, Mr. Bond...
#10 Re: SemRoc Estes Midget
You use what you want, and I'll stick with what makes me happy Thing is I always seem to get the munchies when I'm working on my rockets.luke strawwalker wrote:POT putty?? That stuff imported from northern California, Washington state, or Colorado?? LOL:)Commander wrote:I actually ended up using some bondo glazing & pot putty. Here are some pictures from tonight, I gave it a coat of Krylon silver. Boy do the defects start popping out (although they are not readily visible in the pictures).
P7090005.JPGP7090002.JPG
I prefer SPOT putty myself... LOL:)
Later! OL J R
Commander
Starport Sagitta
NAR No.97971
Starport Sagitta
NAR No.97971