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  #1  
Old 07-14-2019, 12:18 AM
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MarkB. MarkB. is offline
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Default Mini-Dactyl question

Comrades:

Does anybody have a original Mini-Dactyl built or unbuilt? I need to know the length of ST-7 tubing for the booster. I'm guessing somewhere in the 8" range but I'd like to know for sure.

Thanks
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Old 07-14-2019, 07:05 AM
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I don't know the full length right off hand, but as I recall, it is made up of two lengths of ST-5 tubing (not ST-7). One piece of tubing is roughly motor length, with the rest being about seven inches long or so. They are joined with a tube coupler which serves as the motor block.

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  #3  
Old 07-14-2019, 11:26 AM
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http://www.semroc.com/Store/scripts...arts.asp?ID=591

This shows the body tube designations. Now to find them in the catalog.

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Old 07-14-2019, 11:34 AM
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http://www.spacemodeling.org/jimz/km-6.htm

Looks like the smaller tube is 2.5" and the main tube is 6.0" of ST-5 tubing.

C
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  #5  
Old 07-14-2019, 11:50 AM
BARGeezer BARGeezer is offline
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This model uses Centuri "M" engines. 13mm so the tube size is ST-5. The instructions say the motor tube is 2.5" long. A quick measurement of the parts picture on JimZ's site confirms Charles' measurements. So two different methods comes up with 2.5" for the motor tube and 6" for the main tube.
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Old 07-16-2019, 02:45 AM
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Quote:
Originally Posted by MarkB.
Does anybody have a original Mini-Dactyl built or unbuilt? I need to know the length of ST-7 tubing for the booster. I'm guessing somewhere in the 8" range but I'd like to know for sure.
Also available here, on Page 9:

http://forums.rocketshoppe.com/showthread.php?t=17799

FWIW, the measurements come directly from an original Mini-Dactyl kit in my possession.
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  #7  
Old 07-16-2019, 10:02 AM
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The Mini-Dactyl could be flown with the longer B3M motors as well as the A3-M and A6-T from Estes. IIRC Centuri had a spacer for the shorter motors.
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Old 07-16-2019, 10:20 AM
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Yup: toothpick is at the break, 2.5/6:
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  #9  
Old 07-16-2019, 08:32 PM
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Thanks Guys,

I got the gliders from eRockets/Semroc. The balsa included the rocket mounts, so one clone coming up.
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SAM 062

Awaiting First Launch: micro V-2; Blossom V-2; Aero-Dart; TLP Hellfire
Finishing: Zooch Saturn V; Tomahawk sustainers (3!)
Repair/Rescue: Eggspress, Centuri Stilleto
On the Bench: Atlas V 541;
Dream Stage: 1/39.37 R-7
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  #10  
Old 07-16-2019, 08:58 PM
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Getting those would have been nice, now listed as unavailable.
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