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-   -   Estes PF-40A? (http://www.oldrocketforum.com/showthread.php?t=18270)

CenturiKid 01-25-2020 04:43 PM

Estes PF-40A?
 
1 Attachment(s)
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.

BARGeezer 01-25-2020 05:12 PM

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. :D

astronwolf 01-25-2020 06:10 PM

Looks like mine, except the version in my collection is all white.

CenturiKid 01-25-2020 09:56 PM

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.

Crocodile 01-26-2020 03:17 AM

The plastic fin can is a fireworks item. I have several from skyrockets purchased from local fireworks stores.

5x7 01-26-2020 11:42 AM

I wonder if there is any melting from the motor firing between the fins?

tbzep 01-26-2020 11:44 AM

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.

5x7 01-26-2020 11:48 AM

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?

PaulK 02-01-2020 08:16 AM

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.

ghrocketman 02-01-2020 08:45 AM

Any fireworks store should have that fin unit.
Probably will cost you about $5 for the skyrocket.


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