https://www.nationalbalsa.com/birch_ply_p/1641248bp.htm

https://shop.balsausa.com/product_p/344.htm

Dave F.

Mark, I like the idea of long versions of the DBRM, and MDRM. I may have to copy you.

I cloned the original DBRM (18” long BT60), substituting a 24mm mount. It flew on a C11-3 that was more like a C11-12 ... lawn-darted a few seconds before ejection event.

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Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp

D*mn! That is crazy! I Have a bunch of sheet balsa, basswood and thin ply that I've had for some years. Never thought it as part of my retirement fund! :-) ;-)

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Buzz McD.

Avid rocketeer since 1967.
NAR 13559 / L2

Years ago, we used 1/64 ply to skin foam wing cores for R/C Pattern aircraft.
The local hobby shop now wants $25.95 per 12"x10" sheet, which is beyond ABSURD.
At that price it would cost over $200 just to skin a main wing.

I blame all this high wood price on the idiotic wind power industry using all the wood for prop blade cores.

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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 !

Which are then thrown into dumps when they start to fail in 10 years or less

I can see, maybe, paying $8.67 for a 12x48 inch piece of 1/64 ply, but not a 12 inch square one….sheesh! 1/64th ply used to be one of my favorite materials for all sorts of interesting applications….but not now.

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Bernard Cawley
NAR 89040 L1 - Life Member
SAM 0061
AMA 42160
KG7AIE

Wonder what the shipping would be? I tried to check but you have to put in all your info before you can find out...

-Bob

From Sig

-Bob

Off-Topic Comrades:

Finally got a chance to work on it and made good progress. I reenforced the upper ring with some tubing I had that slip fit over the 29mm motor tube. I think it was LT-125 from Semroc. There's a 1.5" piece, then the ring, then a .5" piece so the ring is "trapped" between them. The Kevlar is a weave and I've run it down the motor mount in anticipation of gluing on the main body. The knot is coated with epoxy.

The next steps are to glue on the main body tube, add the fin skins and motor retainer and then we paint. I'm hoping to fly on 4th of July weekend.

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NAR 79743
NARTrek Silver
I miss being SAM 062

Awaiting First Launch: Too numerous to count
Finishing: Zooch Saturn V; Alway/Nau BioArcas; Estes Expedition; TLP Standard
Repair/Rescue: Cherokee-D (2); Centuri Nike-Smoke; MX-774
On the Bench: 2650;
Dream Stage: 1/39.37 R-7

Comrades:

Well, I didn't get done by 4th of July or even July 20th. Two quick pictures, the first is of the completed rocket before painting and the second, with primer, out under the blazing Texas sun this afternoon. Primers are Dupli-color Grey Filler and Dupli-color White.

Not entirely sure what colors I'm going to paint it. I don't particularly want to do it with the Alpha decals that have been around since 1982 as my original rocket flying days were before that. I note that the JimZ plans indicate the original prototype was white with red nose, one red fin and an adjacent panel red.

Maybe.

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__________________
NAR 79743
NARTrek Silver
I miss being SAM 062

Awaiting First Launch: Too numerous to count
Finishing: Zooch Saturn V; Alway/Nau BioArcas; Estes Expedition; TLP Standard
Repair/Rescue: Cherokee-D (2); Centuri Nike-Smoke; MX-774
On the Bench: 2650;
Dream Stage: 1/39.37 R-7