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Alpha (K-25)-style Fin Unit BT50 for 18mm 3d printed

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Alpha (K-25)-style Fin Unit BT50 for 18mm 3d printed
Alpha (K-25)-style Fin Unit BT50 for 18mm 3d printed

DIGITAL PREVIEW
Not a Photo

Alpha (K-25)-style Fin Unit BT50 for 18mm 3d printed
Alpha (K-25)-style Fin Unit BT50 for 18mm 3d printed

DIGITAL PREVIEW
Not a Photo

Alpha (K-25)-style Fin Unit BT50 for 18mm

Made by
$20.99
3D printed in white nylon plastic polished to reveal a smooth matte finish.
QTY
Product Description
This is a reproduction of the fin plan introduced in the Estes kit K-25. Note this is the full classic swept tapered fin plan first described in pattern sheet SP-25 and definitively dimensioned in Estes Tech. pub. TR-11. I thought it would be fun to make a fin unit out of it, to get folks of the sanding business which is becoming less tolerable these days. What I maintain as charm is not having the 'fin tip-to-root taper' that I commonly use, but describe the fins as per the original kit instructions. They subsequently have the sheet stock thickness look, and having a perfect symmetrical airfoil profile as instructed to shape according to those plans. I have even left out fillets, as the plans pre-date the technique. You can compare this fin unit to my other offering in the PFS-50 ( Alpha 3 )-style fin can that I also reproduce maintaining those classic, though slightly different swept delta lines as well. I hope the purists could appreciate these as much as I do. Enjoy!
Tags
Alpha Estes
Details
What's in the box:
Alpha (K-25)-style Fin Unit BT50 for 18mm
Dimensions:
8.1 x 9.35 x 10.92 cm
Switch to inches
3.19 x 3.68 x 4.3 inches
Switch to cm
Success Rate:
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Rating:
Mature audiences only.
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