# Saparinger XL

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#### gdjsky01

##### Whoosh, pop: life is good
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So this guy (Brain) over on YORF comes up with a gazzilion more ideas for rockets. Like I need more right? They already have BARCLONE, now this guy....

Well I am still trying to come up with my own design D12-0 to D or E 2 stage that I really like. I see is Saparinger-AO design (Sparrow or AMRAAM looking 'ish) and I decide to try a 2 stage.

BT-60 to BT-55, small gap staged.

Like so:

Fins are 3/32 inch balsa with full length TTW tabs for the booster about 2/3rds for the sustainer.

Fins sealed with shipping labels, trimmed, and the edges sealed with thin CA

Gonna use a baffle for once. This one from Sunward.

Here's the final ROCKSIM file with the final specs
View attachment SAPRINGER-XL - 2 stage.rkt

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#### Rocketbuilder

##### Well-Known Member
I like that design. I expect you'll be done with this build by 10:00? (7:00PM your time.) :tongue:

#### gdjsky01

##### Whoosh, pop: life is good
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Maybe, if I can get him to let me know the secret, I can get bradycros to teach me to put some doo-hickeys, thing-a-ma-jigs, and whatchmacallits on here. I think they would look good.

Laying out the booster

Cutting TTW fin slots

A preview of things to come

Things that have come.

The centering rings are cut by hand from 1/8 inch (3mm) corrugated cardboard. The look like hell, but once soaked in CA and installed they are just fine

#### gdjsky01

##### Whoosh, pop: life is good
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I like that design. I expect you'll be done with this build by 10:00? (7:00PM your time.) :tongue:

:rofl: :wink:
Nope... that's been the progress over a few days. I am in-between jobs. But orientation for the new gig is tomorrow... so back to my usual glacial pace... not to mention I have been building an R/C Glider on another table in the shop.

#### gdjsky01

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I have a lot of couplers from Uncle Mike. However they are VERY VERY tight in stock Estes BT-60. Almost impossible to use... But use I shall!!! To make a stage coupler that would have an acceptable slip fit I need to do some serious sanding without winding up with a paper thin (pun intended) coupler.

So I took a page out of the "Captain Low n' Slow' manual of CA fume sniffing" and soaked some thin CA into the top 1/3 of the coupler that I wanted to use.

When it dried I TAPED it onto the chuck of my drill press... yes taped it... :lol: ... then turn it on and held sandpaper to it. It turned out FINE. :wink:

There is the cutoff piece of the staging coupler.

Where we stand today... the booster is assembled, filleted, and done save for a launch lug. That fin on the sustainer is just taped there as I have not yet made the TTW slots.

##### Well-Known Member
Maybe, if I can get him to let me know the secret, I can get bradycros to teach me to put some doo-hickeys, thing-a-ma-jigs, and whatchmacallits on here. I think they would look good.

Maybe that could be arranged...

#### gdjsky01

##### Whoosh, pop: life is good
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So the fins are installed on the sustainer in photo 1. Then of course the slots and such were filled and filleted. The tape you see is simply tape to pulled the fitted, but not glued, aft centering ring back out after the fins dried so I could add internal fillets.

So then we wind up with photo #2.

I've now placed 1/4 inch launch lugs on it (so I can use 3/16ths or 1/4 inch launch rods).

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Now I am assembling dohickeys and whatchamacallits on the booster and sustainer. Pictures soon.

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##### Well-Known Member
Is the shape on the lugs the final shape?

#### gdjsky01

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Per your message I am 'examining' my options.

#### gdjsky01

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One so far on the Sustainer

Two on the Sustainer Payload Bay

Two on the booster (and a lug closeup ) - You can barely see on of the two vent holes.

I like it.

#### gdjsky01

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So it's been a week. During the week my new job kept me crackin' so I get very little done... but I made some progress last Sunday and some yesterday the 10th of Nov.

Little back story. I love what bradycros did on his Fly Me! thread. Just a MASTERFUL piece of detailing. :handshake: So as you saw a few posts ago I added a bit of banding detail.

I tried a few of bradycros' techniques for the riveting detail. Some I got to work, some not so much. I am sure I could. It takes practice and patience.

However I kept thinking I could find a way that would be quick and good. It is quick, it is not quite as good, but my drop placement needs work. Maybe with practice...:surprised:

So here's what I did.

What you need

Spray some kicker in the plastic cup

Brush the band for two or three placements

Pickup some CA on your CA applicator (here a sandwich wooden pick ---
hmm looks like it was use to stir dip at one time :y

Place a drop of thick CA on the band in the location where the kicker is. Be careful and practice elsewhere as it'll take some practice to learn how much to pick up on the CA stick. The kicker will cause the droplet to cure pretty quick.

Profit

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#### gdjsky01

##### Whoosh, pop: life is good
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So you can see, the booster droplets are a bit big, a bit blobby, a bit willy nilly.

As I said, I need to practice. :eyeroll: However I think from a few meters away, it'll look fine. We'll see.

The sustainer is better, though again not perfect by any means.

The real thing is, how well will they look after priming and a light sanding! :surprised: That's next! Stay tuned, same bat time, same bat channel.

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##### Well-Known Member
Another great looking build. I am planning on using some of bradycros's techniques on a AVI Star Warrior clone build I have in the works, currently stalled out at the fin cutting stage.

#### Barracuda

##### Well-Known Member
Just looked at the acme spitfire last night "steampunked"..might try my hand at some rivets or pipes also.Great job Jeff
......what is kicker btw

#### gdjsky01

##### Whoosh, pop: life is good
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CA Accelerant. Thats what makes the CA cure before it spreads too far out.

#### sodmeister

##### Well-Known Member
Youre right Jeff ,that fellow over at YORF has some really cool designs ,I mean to scratch and upscale a few.This one you are doing looks like another winner ,nice and "missle" lookin....my favorite.

You did a nice job on papering the fins ,something i have never done before ,but certainly seems worth trying.

Nice work buddy !!

OH....are you going with the AMRAAM gray paint scheme ? I like that one .

Cheers

Paul T

#### Scotty Dog

##### Well-Known Member
Its a beautifull thing your doing.
Its "Out Of Sight"...well,after you launch it ,it will be OOS.

#### gdjsky01

##### Whoosh, pop: life is good
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Youre right Jeff ,that fellow over at YORF has some really cool designs ,I mean to scratch and upscale a few.This one you are doing looks like another winner ,nice and "missle" lookin....my favorite.

You did a nice job on papering the fins ,something i have never done before ,but certainly seems worth trying.

Nice work buddy !!

OH....are you going with the AMRAAM gray paint scheme ? I like that one .

Cheers

Paul T

The papering is Avery half sheet size (8.5 x 11 in the USA - so 4.24 x 5.5) label paper. Very aggressive adhesive. Sealed on the edges with CA.
AMRAAM paint job would be a natural. Tho gray against the sky can be problematic.
White/Grey... not sure yet... But I do think a missile-like paint scheme is in order.

I was gonna do the hex nuts fin detail as well... but I am getting to the point I want to put it to bed.

I want to move on to finishing a 75mm diameter scratcher I started years ago and put in storage. 54mm MMT.

Fly me a "K" I want... mmmm... yess... Fly me a "K"

##### Well-Known Member
So you can see, the booster droplets are a bit big, a bit blobby, a bit willy nilly.

As I said, I need to practice. :eyeroll: However I think from a few meters away, it'll look fine. We'll see.

The sustainer is better, though again not perfect by any means.

The real thing is, how well will they look after priming and a light sanding! :surprised: That's next! Stay tuned, same bat time, same bat channel.

Waiting to see how your efforts turn out. I use a different sequence of steps to get from point A to point B then the ones your using.

#### gdjsky01

##### Whoosh, pop: life is good
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All primered and sanded. I could simply skip posting this and not let you see the warts and all. But heck, I can get better. And honest, once painted and the rivets dotted with little "Sharpie" dot, I bet no one but me and you notice the rivets are a zillion different sizes, oval, stretched, mangled ... etc. :y: :wink:

So take a look see... next one may be better... who knows... tomorrow the color coat... yes Paul, Amraam style. :wink: Light gray.

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#### pick1e

##### Well-Known Member
Very cool. I like that little bit of added detail, it really takes it up a notch.

##### Well-Known Member
All primered and sanded. I could simply skip posting this and not let you see the warts and all. But heck, I can get better. And honest, once painted and the rivets dotted with little "Sharpie" dot, I bet no one but me and you notice the rivets are a zillion different sizes, oval, stretched, mangled ... etc. :y: :wink:

So take a look see... next one may be better... who knows...

Yep... what looks to be something that should be really easy, turns out to be a horse of a different color when you try your hand at it, eh? :grin:

You'll get the little buggers closer to being right eventually! I'm still working on getting 'em to look better too.

#### gdjsky01

##### Whoosh, pop: life is good
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Between all the personal stuff going on, it was nice to spend some time in the shop...

The Color Coat is done. Light gray and white NC.

Once completely dry, Trim, Detail work on the rivets, decals, vinyl, etc.

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Outside shots...

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#### Scotty Dog

##### Well-Known Member
Looks pretty darn good. :clap:
The framed pictures,are they of your birds?

#### gdjsky01

##### Whoosh, pop: life is good
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Just getting started placing markings and decals....

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Yes Scotty those are my Birds. They are photos taken by a friend at launches who prints them onsite in his RV.

#### gdjsky01

##### Whoosh, pop: life is good
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Some final shots before entropy starts kicking in...

Overall I am very please with how it came out. All the markings and details are home made decals, or vinyl. Final coat is a matte clear.

Total weight without chute is 6.4oz. Pleased with that as well. Should fly well on D12's to D12s or D12s to E12s

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#### hornet driver

##### Well-Known Member
THAT!!! Is one nice bird. Well done-----on a side note---If things go bad with an E at staging do we call it a CASTING----I know, I know, go back to your styrofoam bill, your off on a tangent----It's still a really, really good lookin bird!!--GOOD FLIGHTS!---H