dOWNLOAD THE mACH1 UNIVERSAL FIN GUIDE
Which Rail button do I need?
For most rocket applications the diagram to the left shows which buttons fit which rails. Mach 1 rockets come in 3 virtual sizes.
1.) The 1010 button will come with everything in the High power section. (everything that is not BT sized) The only exceptions are the 6" rockets which will have 1515 rail button (not shown)
2.) The Minirail Buttons are 3 piece buttons that Come with BT 55 and BT 60.
3.) The Micro rail buttons com with the BT50 and BT 20 sized rockets.
This what Chopped Carbon Fiber and epoxy looks like for injecting Internal Fillets. The goal is to coat the root of the fin where it touches the motor tube. You need to thoroughly coat both the fin and the Tube and allow the mixture to pool creating a fillet on the interior of the rocket. Note some epoxies are thicker than others and the mixture may end up looking like "snot" and be more difficult to inject. Also if it's cold it may be thicker.