Here are some comparison shots. First is a group shot of an Alpha from the current bulk package, an Alpha II cloned using Semroc parts including their laser-cut K-25 fins, an Alpha III with a replacement body of Semroc ST-9 (why that is necessary is in the AlitmeterOne thread on TRF), another Alpha III with an Alpha IV cone and a streamer inside, and an Alpha IV.

Next is a closer look at the fins on the first three.

Next is a closer look at the noses of the first three

Finally, a group of nose cones. From left to right: Semroc BNC-50K, Semroc BNC-50KP, Alpha III plastic cone, BMS BNC-50K.

FYI the Semroc K-25 fins match the original Alpha fin pattern on JimZ exactly. The last picture, just added, is a comparison between those fins and the fins from the current Alpha kit before it was built. The fins with the little hole near the root edge are the current Estes ones, the others are the Semroc K-25 fins.

Attached Thumbnails

         

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Bernard Cawley
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