02-05-2013, 06:50 PM
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The_Ripper
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Join Date: Jun 2005
Location: Louisiana
Posts: 1,941
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Quote:
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Originally Posted by A Fish Named Wallyum
I have an original FSI Dart and am cloning a sacrificial Dart to fly on a Estes E9 or E12, and I'd like to build a booster to go with both. Does anyone have a booster that they could measure know of someplace that has the specs? Short of that, I'm planning to fake it.  |
Bill,
Sorry for the delay in getting back to you with this ... hope I didn't delay your build any
It seems that since I got an iPad for Christmas I don't seem to be turning on my PC at home much anymore and haven't been much in the RockSim program lately.
I found three old files on my PC ... two I last saved on 5/10/2005 and the most recent using SEMROC equivalent tubing I last saved on 1/4/2009. It's been a while since I've cloned one of these but certainly looking forward to the new Estes motors to revisit the designs.
The booster length I used for the one that I posted pictures of in this thread I have a note in my RockSim file that for the SEMROC ST-7100 tube I used for the booster I cut to 6.10" long (just a little over the 150mm that Chas mentioned in his post). I made the motor mount tube that I centered inside the ST-7100 just a little longer than that so I could round a little on the front side between the inner motor mount tube and the outer ST-7100 with glue to create the rounded end that FSI used on the Thruster F100-0 motors. You can see this if you look close at the pictures. I built it up with a small bead of epoxy. Come to think of it epoxy clay would probably work well to form that.
I remember the Dart you picked up. I saw that on eBay. Isn't that the one that came from the teachers collection at a school or something?
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__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052
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