D12 ENGINE SERVICE BULLETIN https://estesrockets.com/pages/d12-...ervice-bulletin

There is a potential manufacturing issue for D12-3 and D12-5 engines with a Lot Code that begins with "E22". The potential affected products are listed below:

Lot Codes
E22 0522
E22 0622
E22 1022
E22 0123
E22 0323
E22 0523

The affected products pose no safety concerns if the National Association of Rocketry safety code guidelines are followed. Please fill out the contact form to contact customer service for replacement product. Completion of replacement engine products are estimated around 120 days.

Lot codes can be identified in two different areas on your engines. Please refer to the highlighted sections in the image below for reference:

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

120 days to get replacement product ?
That's outrageous. Should be immediate interruption to their pending orders.
Send a Pic, they should send product at a 2 for 1 rate to makeup for the hassle.

__________________
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 !

Has anyone heard or does anyone know the exact issue with the motors? Were they simply ?made wrong? or such, or do they go boom, no ejection, etc? Just curious about the real root issue with the motors.

Earl

__________________
Earl L. Cagle, Jr.
NAR# 29523
TRA# 962
SAM# 73
Owner/Producer
Point 39 Productions

Rocket-Brained Since 1970

There's a thread on TRF called "D12-3 CATOs Date code E22 0123." And another discussing the recall.

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

My understanding was that it was due to a bad batch of the carboard casings that was not up to specs. Only discovered after the failures occured.

Chas

__________________
Charles Russell, MSgt,USAF (ret.)
NAR 9790, Lvl 1
SAM "Balls Three"

Thanks for the responses. Yep, I?ve seen D12s do THAT before! I?m sure many here have seen fireballs like that from Estes Ds in years past.

Earl

__________________
Earl L. Cagle, Jr.
NAR# 29523
TRA# 962
SAM# 73
Owner/Producer
Point 39 Productions

Rocket-Brained Since 1970

Yup, ruined a real nicely finished Estes Phoenix in '98 or '99 with a D12 Cato.

__________________
Scott D. Hansen
Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe!
Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies!
Ye Olde Rocket Forum
WOOSH NAR Section #558

He blowed up real good!

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__________________
Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Estes - Low Boom SST Semroc - Mini Aero-Dart, Shrike, SST Shuttle

In paint: Canaroc - Starfighter Scorpion

Unflown: F-22 Air Superiority Fighter, Jayhawk, Multi-Roc, Solar Sailer II, Microsonde 3 Payloader, Aerobee 300, Cyber III, Scrambler

Ah, classic stuff! I haven?t watched an SCTV rerun in quite a while. I miss John Candy. Gone waaaay too soon.

Earl

__________________
Earl L. Cagle, Jr.
NAR# 29523
TRA# 962
SAM# 73
Owner/Producer
Point 39 Productions

Rocket-Brained Since 1970