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#11
04-29-2017, 05:21 PM
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I may be in the minority here but I'd rather see one large F24, F50, G64, or G78 flame that is larger than any 4xB6 or 4xC6 cluster.
If I was to cluster anything BT-101 based it would be a 3x24mm or 4x24mm. That way you could cluster C11's, D12's, or E12's and actually have a REAL amount of KICK off the pad. 3 or 4 24mm Composite F32's would be a real hoot. The way most build a Saturn V (or combination/kit bash of the parts) would most certainly result in a super-shred.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, and HAVOC ! 
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#12
04-30-2017, 10:26 AM
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Three views of the lower section with the fins and pod fins attached. Used epoxy for the centering rings to avoid the shrinkage of the yellow glue... The TTW tabs were glued to the main BT and to the MM BT with yellow glue and fillets applied, nothing fancy and I think a common practice for those who always use this method of attaching the fins. I did a dry fit of all the parts and compared it with my Semroc Orion.
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_____________________ - Raúl NAR #88644 SAM #230 EAC CAT _____________________
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#13
04-30-2017, 10:42 AM
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Upscale Orion Pods Modification.
I am running with the idea of doing this mod for the Orion. Using the F1 engine bells on the pods at an angle. To give some strength I drilled through the top of the F1s and added a wood dowel and glued it with epoxy. Cut 1.5 sections of BT-60 on a mitter at the 22.5 angle. I adjusted these sections so they could slide inside the BT-60 (like a couplers) by cutting vertically and removing some of the BT. Then glued a balsa circle to the angle part. I guess you can figure out the rest. The result are three angled adapter for the pods. I like this arrangement. This is why I mentioned earlier that I had plans for the pods.
I may have to give it a new name as it will be a "modified" upscale of the Orion.
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_____________________ - Raúl NAR #88644 SAM #230 EAC CAT _____________________
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#14
04-30-2017, 11:37 AM
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Quote:
I don't know if anyone pointed it out but the very first design of the Centuri Orion had a nose cone the was a composite of a paper reducer and a small nose cone. I don't recall how long the kit was produced like this before the nose cone was changed to a blow molded nose cone. So it looks like you are up-scaling the true classic design, Very Cool Neal Miller
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Neal Miller Master Blaster NAR# 58296
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#15
04-30-2017, 02:11 PM
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Quote:
I started building the NC close to what you said. The Semroc RKT file for the Orion has the NC in 4 parts, all balsa. But as an upscale NC, the cost for a balsa NC that big would be more than I was willing to pay. I started with the lower portion but later decided on another approach. The outer skin is from a sheet of plastic. It ended up being pretty strong. I am saving it for a later project. The cone to the left is the lower transition that goes over the MM.
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_____________________ - Raúl NAR #88644 SAM #230 EAC CAT _____________________
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#16
04-30-2017, 02:47 PM
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This was the inspiration for Carl to release the Semroc Orion. My son considered building the paper version and I would have turned the balsa tip for it, but Semroc came through with all of the cones needed for him to scratch build it. Your upscale looks great so far.
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I love sanding. 
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#17
04-30-2017, 03:01 PM
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NICE! Can't wait to see it fly!
 Verna http://www.vernarockets.com http://www.amazon.com/dp/B00HHJHOK6 http://www.amazon.com/dp/B00O14ET8K http://www.amazon.com/dp/B01CX1UPCG Attached Thumbnails
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#18
05-02-2017, 03:00 PM
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... one pic I forgot to post...
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_____________________ - Raúl NAR #88644 SAM #230 EAC CAT _____________________
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#19
05-03-2017, 08:39 PM
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Baffle and Upper Core BT-55 Assembly
My little break today was dedicated to put together a baffle from Semroc and assemble the upper portion of the core BT. The baffle has a light coat of epoxy on all surfaces that will face the motor ejection charge and will be placed inside the upper section of the core BT. I keep reading that the recommended location for a baffle is "as far from the motor as possible" with also helps with stability. I calculate that I will have an 8" long payload section for the parachute.
I am also thinking about following an earlier advice of installing a 29mm MM and make a 24mm adapter so that I can fly it on a variety of motors. I can only fly up to "G" at the fields I have access to. This may or may not change...
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_____________________ - Raúl NAR #88644 SAM #230 EAC CAT _____________________
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#20
05-08-2017, 04:03 PM
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Time for an update...
Continue this slow build as time permits. Did yellow glue fillets on the fin tabs inside the main BT. Then proceeded to use 15 min epoxy for the outside fillets. They came out nice.
Worked on the pods next. Decided to add two 1/16 diameter dowels to the pod fins that would go through the pod. Once the pods were glued I placed epoxy over the dowels to secure them. I kept turning the rocket as the epoxy was curing so that the epoxy would cure like a cone over the dowel. That worked great on all three pods. Next was the "angled" F1 Engine Bells. Glued them with epoxy also.
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_____________________ - Raúl NAR #88644 SAM #230 EAC CAT _____________________ Last edited by rosko_racer : 05-08-2017 at 04:21 PM.
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