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Old 02-19-2020, 08:52 PM
ghrocketman's Avatar
ghrocketman ghrocketman is offline
Join Date: Jul 2005
Location: Michigan
Posts: 10,256

Interesting that your 1969 B14-0 looks to be at least 1/4" longer than the 1979 one.
When in doubt, WHACK the GAS and DITCH the brake !!!
No DIRECT and MEASURABLE Harm=NO Foul advocate

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Old 02-19-2020, 09:24 PM
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Earl Earl is offline
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Join Date: Dec 2006
Posts: 2,398

Originally Posted by LeeR
I finally found my stash of old motors. Here are comparison pictures between a 1969 Estes B14-0, and a 1979 Centuri B14-0.

As most of you know, the difference is quite noticeable with these two B14s. In addition to having a larger bore, the older Estes motor also has a small diameter secondary bore that is definitely visible.

Iíve not flown one of the newer B14s, which I plan to do. Iíve also got an older B8, which will be an interesting comparison flight.

That 1979 Centuri B14 is constant with latter 70s Centuri B14ís that I had.

I kind of suspect the deep core of the Ďrealí Estes and Centuri B14ís was ditched sometime in the latter 70ís (Estes was once again making the Centuri motors), and that they were ALL probably B8ís by then. The label change to ĎB8í came some years later.

Earl L. Cagle, Jr.
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Old 02-19-2020, 10:10 PM
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LeeR LeeR is offline
Retired with Way Too Many Kits
Join Date: Jun 2007
Location: Colorado
Posts: 2,420

Originally Posted by ghrocketman
Interesting that your 1969 B14-0 looks to be at least 1/4" longer than the 1979 one.

It does, but just a parallax issue. They are indeed the same length.

Phone was held at an angle to try to avoid my shadow from overhead lights, and close enough to try to see down the nozzle.

Also, the motor nozzle differences are much more dramatic looking at them in person vs. seeing a photo.
Lee Reep

Projects: Super Sky Hook, Super X-Ray, Estes Phoenix, QCC Explorer, MAV
Awaiting Paint: Estes Saturn 1B
Last Completed: Big Daddy, in Red Max attire
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