Not sure if this is the best place to post, but figured these aren't ' kit collecting' ,lol ....

IN the late evening at the recent NyPower launch , was chatting with some guys from Syracuse, and he says someone had given him these motors - they thought about flying them at the exp launch, I cringed.
Went and inspected same, trying hard to not droll all over and ruin the motor wrapers

At first the gentleman had not wanted to sell, and had estimates of the 'cash value' from various sources, which gave him sticker shock, and the realisation not to fly them - I would up swapping a pile of Aerotech Reloads for the three as follows :

1 - Mini Max E3.5-6 Special
Max thrust 5 lb
caoded 000263 ( anyone decipher this ? is it Feb 63 ? )
this one has the endcaps torn off, so someone might have been prepparing to fly it.
any comments on what the 'special' means ??

2 - Mini Max F14-4 Single Stage
max thrust 25 lb
coded 000309
flawless mint wrapper, no smudges, caps intact, a wild peice of history

3 - Mini Max F25-6 Single Stage
max thrust 40 lb
coded 000123
this one also beautiful with end caps and very minor wear.

a great historical find, why doesn;t someone find these in an attic and give some to me, since they know I like rockets, lol ....

ENJOY !

( might entertain offers if any ' serious' motor collectors want these for thier museums, lmk :-P )

~ AL

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Wow, great find, AL!! And that F25, it has 40 lbs of thrust?! Wow, and I thought the FSI
F100's were something with the 35 lbs of thrust for the .5 seconds it burns.....

__________________
Dave, NAR # 21853 SR.

Any instruction materials with those? That's something I've never seen.

The F14 and E3.5-6 are listed in the 1967 catalog:

http://www.ninfinger.org/~sven/rock...67/67cen64.html

There's an F25-6 listed in the 1965 catalog, but as a "Hercules" not Mini-Max.

I'm going to guess that your F25 is from 1966, which might have been when the Mini-Max name replaced the old "Hercules" and "Atlas" labels.

In any case, amazing find!

I once had an E3.5 motor in '69 or '70. Never flew it, but have no idea what happened to it. A kid in our club flew a few Mini Max F motors until he switched to FSI F100. I actually liked the Mini Maxes, but he liked the F100, and Centuri quit making them anyway.

__________________
Roy
nar12605

Al,

That's a fantastic find!

I ended up getting some Mint condition Coaster motors from a seller who bought them off a guy who was out flying them one day.

Bob

That F25 is super interesting - what is the length of the casing? Mini Max were 7.75" long, Hercules were 8" if it is the longer casing with a MM label it might have been right at the transition from one line to the other. Ninfinger does not have a 1966 catalog but my fading memory recalles the '66 to be a reprint of '65 with the Mini-Max introduced in the '67 catalog which came out the fall of '66

I recently came across 3 mini-max motors also.Mine are all F55-4 with a date code of 000094 . Could not find those in the centuri catalogs. The labels look like all the rest with peach colored lettering and stripes

You couldn't find the F55-4 or the date code? The motor is here: http://www.ninfinger.org/~sven/rock...a/69cenp86.html

HTH.

Doug

I have the following motors.

Enerjet E24-10

Pro Jet E20-10

Mini Max D2-3 (4)

Mini Max F14-4

I'm confused. For a while now, I've had it in my mind that Mini-Max motors were composites (and that the earlier Hercules/Atlas were BP) but from looking the specs on Ninfinger, it looks to me like the Mini-Max were also BP. Is that correct? Judging from the data - specifically, the ability to stage using booster motors - they look like BP motors. Furthermore, at less than 1 Ns per gram of propellant (F55: 62.5g prop, 46.8Ns) the specific impulse is consistent with BP.

Maybe I was confusing Mini-Max with the later Enerjet motors from Centuri.

Doug