bjc4073 Posted August 21, 2015 Posted August 21, 2015 On Skylighter's instruction on making 2'' cans he tells you the delay (around 1/2'') and then tells you to add an inch to that. Since time fuse bursts through the end why would you add the inch. The few I have tested worked well and broke a little after apogee. Another tutorial says to only use 5/8" though.
pyrokid Posted August 21, 2015 Posted August 21, 2015 Was the fuse punched? Adding an inch to the timing you want would allow you to punch the fuse 1/2" from each end to insert black match. I think this is a waste of time fuse though, as plenty of people just prime the end of the fuse with good success. As usual, use the method that best suits you.
bjc4073 Posted August 21, 2015 Author Posted August 21, 2015 Was the fuse punched? Adding an inch to the timing you want would allow you to punch the fuse 1/2" from each end to insert black match. I think this is a waste of time fuse though, as plenty of people just prime the end of the fuse with good success. As usual, use the method that best suits you.I think he did blackmatch it. If I do not want to do this should I just use the delay?
bjc4073 Posted August 21, 2015 Author Posted August 21, 2015 At 1.5'' which is what I was using it turns out to be 3.22 seconds of delay. It is possible that my shells take that long to get there.
bjc4073 Posted August 21, 2015 Author Posted August 21, 2015 APC Can Shell Help Video.mp4 Here is a video of my first 2 can shells. I took a 1/4'' off the original length but have not tested them yet.
schroedinger Posted August 21, 2015 Posted August 21, 2015 What you wan't is 1/2" of delay. If you slurry prime or just tie some black match over the fuse end, then this is all you need. If you crossmatch on both end, then you need 1/2" more in both ends, to have enough space for the crossmatching. A 2" whould break after 1, 5 to 2 seconds, at you 3.2 seconds, the shell will have allready fallen down 10 - 15 m.
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