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  #11  
Old 05-12-2007, 10:49 PM
timmwood timmwood is offline
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Default FSI Echo

I had an Echo that I launched on a D20 booster with an E5-6 in the upper stage. The high thrust of the D got the rocket going well and then the long-burn E made for a nice show.
If FSI motors magically reappeared on the market, I think I'd go for the 21mm motors but stay away from the 27mm E and F motors. There are just too many composite motor options out there now that would be less prone to CATOs.
timmwood
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  #12  
Old 05-12-2007, 11:03 PM
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Doug Sams Doug Sams is offline
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Quote:
Originally Posted by timmwood
I had an Echo that I launched on a D20 booster with an E5-6 in the upper stage. The high thrust of the D got the rocket going well and then the long-burn E made for a nice show.
Sounds sweet. I build my Echo I with 18mm mounts. Much more subdued in flight
Quote:
If FSI motors magically reappeared on the market, I think I'd go for the 21mm motors but stay away from the 27mm E and F motors. There are just too many composite motor options out there now that would be less prone to CATOs.
But you can't beat BP for ease of staging.

Doug
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  #13  
Old 05-12-2007, 11:19 PM
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Tau Zero Tau Zero is offline
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Wink FSI Parts from Semroc

Quote:
Originally Posted by timmwood
I hope Semroc resurrects some FSI kits or expands their parts collection to make it easier to clone FSI kits.
Timm (and 2ahoser),

Here ya go for starters: http://www.semroc.com/Store/Scripts...asp?company=FSI

But then, you probably already knew about that link.


Cheers,
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  #14  
Old 05-13-2007, 12:31 AM
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Initiator001 Initiator001 is offline
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Quote:
Originally Posted by timmwood
The FSI catalogs also had a page that said the "Thunderbolts" were coming and had some data for a G-level motors. There was a rubber-stamped "not available" message on that page of the catalog. I wonder if the "Thunderbolts" were composite motors or an even bigger black powder motor?
timmwood


The Thunderbolt motors were composite propellant motors.

Here are some pictures of the G60 Thunderbolt in my collection.

Bob
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  #15  
Old 05-13-2007, 06:54 AM
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Quote:
Originally Posted by Initiator001
The Thunderbolt motors were composite propellant motors.

Here are some pictures of the G60 Thunderbolt in my collection.

Bob
And here I thought the Thunderbolts were vaporware
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  #16  
Old 05-13-2007, 08:57 AM
Jackson Roykirk Jackson Roykirk is offline
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I remember the Thunderbolts from one of the last Pitcons. Someone flew one at that launch.

The F100s (and E60 and D20) were 100% reliable when ignited at the nozzle like conventional BP motors, instead of at the top of the core like a composite. I'd love to see the return of big honken cored BP motors, like FSI or Rocketflite.
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  #17  
Old 05-13-2007, 09:41 AM
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snaquin snaquin is offline
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Quote:
Originally Posted by Initiator001
The Thunderbolt motors were composite propellant motors.

Here are some pictures of the G60 Thunderbolt in my collection.

Bob


That's an awesome motor for your collection! I wonder what the "special purpose" was for these rare motors that was referenced on the label?

.
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  #18  
Old 05-13-2007, 11:19 AM
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Quote:
Originally Posted by snaquin
That's an awesome motor for your collection! I wonder what the "special purpose" was for these rare motors that was referenced on the label?

.


Going supersonic....
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  #19  
Old 05-13-2007, 11:39 AM
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rocketguy101 rocketguy101 is offline
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Quote:
Originally Posted by Jackson Roykirk
The F100s (and E60 and D20) were 100% reliable when ignited at the nozzle like conventional BP motors, instead of at the top of the core like a composite. I'd love to see the return of big honken cored BP motors, like FSI or Rocketflite.


Yes, F100s were awesome! I have a 2 stager w/ F100-0 booster and E5-6 sustainer that rocked! Unfortunately, the last time I flew it, I used a modern composite-type ignitor (rather than the old FSI ignitor), and lit the top of the core. There was a "BANG-whooooooooooooooooooooosh" as the F semi-cato'd and lit the sustainer! The rocket recovered normally, but the rear of it was toasted.

As stated earlier, BP motors are easier to stage, and that big honkin' nozzle of the F100 was sooooo cool to look at!
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Last edited by rocketguy101 : 05-13-2007 at 03:35 PM. Reason: add video link
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  #20  
Old 05-13-2007, 11:43 AM
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dwmzmm dwmzmm is offline
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Recently tried to fly my FSI OSO kit (newly built, I might add) with the F7-6 as part of the
NAR OOP motor testing program. Used one of my QuickBurst Hot Shot igniter for ignition.
But the F7 catoed immediately on ignition and made a nice, big fireball several feet off the
pad. The OSO was really toasted, burned to a crisp just above the fin can area. I found from
looking through my parts stash that I have a 27 mm tubing that can be used to easily repair
the OSO to look like new again.
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