Apogee says, "Two stage, REMOVE PAYLOAD BAY - NOTE: RockSim says this is underpowered and unstable, however in our test flights it worked alright. Launch on an 8ft rod on extremely calm days only!!"

https://www.apogeerockets.com/Rocke...s/Two_The_Limit

It is under a pound with all tubes, but the third tube was a marketing stunt in 1984 and not "needed". Because it is a long rocket either way, the standard 3/16" or 1/4" rods are just fine.

Jerry

So much for Rocsim as being better than a string test! This is a VERY stable and light rocket for Estes BP 29mm motors. It originally was designed around our F20-0 to F20-4 direct staged composites!

http://v-serv.com/usr/NAR-TRA-93.2.htm