#1
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E60 & spool
Hello. I have a half dozen of the old FSI E60-4 motors laying around. They've been stored indoors in my closet so likely are still good. Not sure if I should save them for posterity or use them. The only rocket I would feel comfortable risking is a LOC Cool Spool. (I used to use them in an Aerotech Wart Hog (3x), but it only worked ok under conditions with no wind and rod vertical).
I know the spool normally flies using F or G motors, but given the high initial impulse of the E60 I'm thinking it might work. A low ejection wouldn't be much of a problem with the spool. Any thoughts? (I also have some FSI F7-4 motors....planning on building an ultralight weight sacrificial rocket for those....the low thrust and short delay makes it quite the odd ball motor...). |
#2
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Seeing as my experience with the disastrous FSI E60 is over a 50% cato rate, I wouldn't use them in anything worth more than $1.98.
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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 ! |
#3
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Halloween Bowl rockets are good motor test vehicles. Only $1 at the Dollar Store. Just add a motor tube, centering rings (to lock it in a cutout in the bowl), and launch lug.
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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 |
#4
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Lee's idea above is probably the ONLY worthwhile use of old FSI E60 motors.
__________________
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 ! |
#5
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Quote:
The 50% CATO rate was when they were new. I still have a few that I use as fireworks displays when I do a scout or school launch and the CATO rate is now 100% for motors that have been properly stored for almost 25 years. Last edited by Joe Wooten : 10-12-2020 at 04:02 PM. |
#6
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I didn’t mention, but I built that Halloween Bowl rocket to use up E9s. Although I’ve only flown maybe a dozen E9s, most in standard rockets back when they came out, and a few newer E9s in the bowl rocket, I’ve not had any catos. I still have a few E9s, plus a pack of E12s, so there is some chance I might actually get to experience one.
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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 |
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