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The Estes Alpha is a classic sport model that is extremely popular. Why not upsize it from a BT-50 to a 3" body tube with a 29mm motor mount? The parts in this upgrade kit added to an Estes Der Big Red Max kit (not included) will allow you to do this! The fin shape has been researched by Alpha historian Bernard Cawley to more accurately reflect the contours of the earliest Alpha kits, which featured the SP-25 pattern sheet.
Parts Included:
- 8.5" long 3"diameter body tube (one)
- 3" diameter body tube coupler (one)
- 1/8" laser cut plywood centering rings (three)
- 1/8" laser cut plywood fins(three)
Construction involves:
- replacing the Der Big Red Max fins with the laser cut plywood fins
- replacing the Der Big Red Max card stock centering rings with the plywood centering rings
- lengthening the body tube by adding the tube coupler and 8.5" body tube
- replacing the Der Big Red Max nose cone with a Doorknob nose cone
- Vinyl Decals are available from Stickershock23.com (not included)
This upgrade was designed by world class model builder James Duffy, whose model you see in the photo..