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  #1  
Old 01-25-2020, 04:43 PM
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CenturiKid CenturiKid is offline
Did you see that yaw control?
 
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Default Estes PF-40A?

Sorting through an old range box today, I cam across this plastic fin can and was wondering if it could be an Estes PF-40A. I'm basing that assumption on the picture from the 1964 Estes catalog, and the fact that the range box contained mostly mid-late 1960s Estes and Centuri parts/paperwork. The fin can does not seem to fit any body tube sizes I have in the stash, but according to the catalog it would fit BT-40, which I don't have any samples of.
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  #2  
Old 01-25-2020, 05:12 PM
BARGeezer BARGeezer is offline
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Looks like it. You could clone a Dirty Bird III :
http://www.spacemodeling.org/jimz/mrn/mrnbo12o.jpg
BT-40 tubes are here:
http://www.erockets.biz/bt-40/
BNC-40 nose cones are here, including the BNC-40G:
http://www.erockets.biz/bnc-40/
Or order a different BT-40 tube and nose cone and scratch your own design.
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Old 01-25-2020, 06:10 PM
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Looks like mine, except the version in my collection is all white.
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  #4  
Old 01-25-2020, 09:56 PM
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CenturiKid CenturiKid is offline
Did you see that yaw control?
 
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Thanks for the info and the plan link. The red stripe is a paint job by the previous owner. Probably the same bottle of testors red that was in the box.

I am hoping to take measurements and see if I can make a 3d printable version. My current skill level is at centering rings, so it may take a while.
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  #5  
Old 01-26-2020, 03:17 AM
Crocodile Crocodile is offline
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The plastic fin can is a fireworks item. I have several from skyrockets purchased from local fireworks stores.
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  #6  
Old 01-26-2020, 11:42 AM
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5x7 5x7 is offline
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I wonder if there is any melting from the motor firing between the fins?
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  #7  
Old 01-26-2020, 11:44 AM
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Quote:
Originally Posted by 5x7
I wonder if there is any melting from the motor firing between the fins?

There was some melting/charring in the fireworks version when I'd clean up the yard after the 4th of July. I never had an Estes kit, though.
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Old 01-26-2020, 11:48 AM
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5x7 5x7 is offline
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Quote:
Originally Posted by tbzep
There was some melting/charring in the fireworks version when I'd clean up the yard after the 4th of July. I never had an Estes kit, though.


I have always wanted one of these, either an original or modern version. I have BT40 and a fireworks conical nosecone that should fit. Anyone have one I could buy?
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  #9  
Old 02-01-2020, 08:16 AM
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PaulK PaulK is offline
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Quote:
Originally Posted by CenturiKid
Thanks for the info and the plan link. The red stripe is a paint job by the previous owner. Probably the same bottle of testors red that was in the box.

I am hoping to take measurements and see if I can make a 3d printable version. My current skill level is at centering rings, so it may take a while.
Cool find! Sounds like a great opportunity to hone your skills.
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  #10  
Old 02-01-2020, 08:45 AM
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Any fireworks store should have that fin unit.
Probably will cost you about $5 for the skyrocket.
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