Go with the G78G.
Great motor with GREEN flame !

__________________
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, AGITATION, CHAOS, TURMOIL, FIASCOS, AGGRAVATION, INSTIGATION, NUISANCE-ACTION, and HAVOC !

Attached another Rear Wrap Panel and started installing the Front Wrap Panels.

I had an idea last night about placing the Launch Lug between the Rear Body Wrap and the Body Tube.... which means it'll sit on the Front Wrap and snake through the Rear Wrap. That means I'll need to cut some slots in the Bulkheads.

Used my Dremel and a sanding drum to make the notches in the Bulkheads for the Launch Lug. Worked out even better than anticipated as the Wrap will fit over the Launch Lug, completely covering it, except for the ends.

It's almost meant to be... we'll just call it a DSDC, short for "Death Star Destruction Cannon".

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop

Body Wrap Panel installation is complete... now for the gluing to make it tight.

I made some backers out of cardboard and installed them inside the bulkheads, should make filling the voids much easier.

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop

Finished gluing the Body Wrap, attached the Dowels to the Nacelles and did a dry fit mock up. This thing is huge.

I weighed the components and it's currently at 34.29 ounces. I'll need to keep an eye on the weight... may have to fly this model naked unless I get my L1 certificate.

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop

Nacelle Dowel Glue Fillets...

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop

Attaching the Nacelles to the Nacelle Supports. Also updated the OpenRocket 3D Finished View.

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop

Nacelle Support Glue Fillets, Rear Nacelles Attachment and Spool Build

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop

This rocket is rear eject and therefore the bore of the C-80 must be smooth. When I attached the fins I perforated the wall of the C-80 so the glue would soak through all the layers off the cardboard, this process leaves a cheese grater surface on the bore of the tube.

I used a Dremel to knock down the perforations, but the bore still needed to be sanded.

I made a sanding drum from a used Neutrogena jar. The jar is plastic and is a loose fit into the C-80. I bored a 1/2" hole into the bottom of the container and inserted a 3/8" dia. carriage bolt. I then cut a slot into the side of the container to hold a piece of sandpaper.

The sanding drum fits into the chuck of a cordless drill and is then used to sand the bore of the C-80 tubing.

After I was happy with the fit I blocked off the nose cone end and flooded the inside with watered down wood glue, then dumped the mixture out and ran a paper towels down the bore, like you'd clean the bore of a gun.

So now the Y-Wing has a nice smooth bore that's been fireproofed.

Link To Video: Neutrogena Makes Sanding Drums... Who Knew?

Link To Video: C-80 Rear Eject Spool Fit - Sanded

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__________________
John Simmons a.k.a. "Lakeroadster"
NAR 113985
My Fleet with Build Data: Lakeroadster's Rocket Shop