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Bluetube Optimas
#1
So, I have this obsession.  I've got an Optima and a Shadow I built back in the day.  I've build two downscales out of BT60.  I've got a semi clone with a short BT and a round nosecone.  I have parts for two more full scale clones.  I have a BT50 SEMROC kit unbuilt, and both an Optima and a Shadow unbuilt in the boxes.    It's a small issue.  Way back when I got back into rocketry, I built a small Onyx.   Quickly outgrew my local fields and decided if I was going to club up, may as well build something worth doing an L1 on.  Thus began my plans for my first Bluetube Optima.   29mm, plywood fins.  I took a good bit of time building it, and learned a lot along the way.   I'd have done a few things differently,   better epoxies, 38mm mount, etc.  So I'm building that now too, and a cluster just for fun.   I'll get to those later, but here's the first- 

First layout of parts.  All this stuff seemed crazy big to me.
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Fin layout:
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Slotting the tubes.  I now use a dremel and cutoff wheel.
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fitting the fins
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first dry fit.  I cut a slot in the fin tabs and locked them over the CR.the motor mount is excessively long.

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another place I went a little bit crazy, this U bolt, and massive harness.
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This is after I took the clamps off that kept the forward fins in place:
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May have overdone it here:
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Grabbed a rocketman 3' after I realized the fruity chutes 16 was waaaaay too small
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Tiny thin fillets.  another thing I'd change
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inside-
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Ready for paint, priming, painted!

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In flight-  F50T, G78G, G38FJ, F50T, G54R, H133BS, G77R, G40W, H250G, G79W, G138T, G80T, G78G, G77R, G79W,  G53J, G78G, G79W


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So, Now I've learned what I did wrong.   I've debated going DD on this many times.  But it would put the weight into something that wouldn't fly on a G80,  and part of the great joy of this rocket is grab it, slap a motor in, and walk to the pad.    So it stays single deploy.  I have other rockets for going high.    But I want it with better glues, and a 38mm mount.  so here we go.

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Oh, and while I'm here...I found out these fit...so lets make a third Smile

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Sanded the fins all even

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dry fit
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Heres the second fin going in.   The first was even, didn't need to be adjusted.  This one was slightly off, and the fin guide doesn't fit the 3/16 fins.  So I got a little creative.   Glued in the Motor mount and the fins with Aeropoxy ES6209.   Aeropack is on with JBweld.

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#2
Looks good! We'll reserve the discussion of your choice of libation to another thread, tho...
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#3
(06-07-2015, 11:16 AM)phlash Wrote: Looks good!  We'll reserve the discussion of your choice of libation to another thread, tho...

Typically, I do a little better Smile   Must have been a warm day and I needed re-hydration.

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#4
Back to building, I even got a Pepsi in this one Smile

I typically seem to put the forward fins about 2 1/4" ahead of the rear.   Not sure if this was in the estes instructions, or just randomly spaced.

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#5
One down.  Now for the hard one.

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#6
I never had an Optima, but I always liked the looks of it.
Your paint work makes me want one even more now.
You do fine work!
Subscribed!
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#7
Agreed, love the Optima, and your paint scheme has to be the best I've seen.
It's restrained but showy at the same time, very balanced. I much prefer it over the original which is rare for me.
When I get around to building an Optima I hope you don't mind me copying your paint!
AMRS #54
WARS #24
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#8
Thanks guys! I was thinking something totally different when I started, but seeing it naked as bluetube and bare fins....the fins stood out so much better I had to go with this.

The second one I've been thinking a stock paintjob.... but maybe a white fin/black/white top would work better, with the rings of flake I had rings for the blue one, but didnt think they'd fit.

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bt60
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i also like the shadow....
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#9
Dave I am not sure the word obsession quite describes you and the Optima! It is not a strong enough word!  Big Grin Big Grin 
You do make the best Optima's!


Bill Clune L3 | NAR#88583
Been a launch Director
Founded a Club
MARS Club|SRC|MDRA - Forever
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#10
Optima falls right in with other classics like the Viper and Cherokee-D.
No matter how upscale you make them, they just seam to fly right and look darn good doing it.
Especially with a really good paint job with the right colors.
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