Does anyone know where to get the Estes Pattern Sheet SP-91 P/N 83233 for 3-Fins on a BT-80 ???

[k5dbb]

Does anyone know where to get the Estes Pattern Sheet SP-91 P/N 83233 for 3-Fins on a BT-80 ???

I am going to scratch-build a Maxi Alpha and need to know how to mark the Body Tube for the Fin Spacing.

I don't know if these are posted anywhere, but I would appreciate it if anyone knows. I need a copy to print full-scale.

 

[DigBaddy]

Payload Bay tools may be of use.
https://www.payloadbay.com/page-Tools.html
If you have it designed in Openrocket, one can print templates for things too.

 

[bjphoenix]

I make my own. I cut a strip of paper to wrap around the body and put a pencil mark on it where it overlaps. then I unroll it and measure the distance in mm between end of paper and pencil mark with a metric ruler. I divide that number by the number of fins then put pencil marks along the paper with that spacing. If the spacing came out to 41.3mm I can estimate .3mm between marks. It doesn't have to be real precise.