MudDuckPyro79 Posted April 1, 2017 Posted April 1, 2017 Just a quick question about his pumps, does anyone know if the cruciform spins or is it a solid machined end with just the pin that retracts. Thanks for any info.
memo Posted April 1, 2017 Posted April 1, 2017 mine is solid, so is the pin, it does not retract memo 1
calebkessinger Posted April 1, 2017 Posted April 1, 2017 (edited) I know a guy that makes fancy spinning ones. Ok.. without joking. Wolter's are just solid. He cuts the rammer and cruciform separate, sends it all off to be coated and then glues them together. I have disassembled one before and made it spin. http://www.woodysrocks.com/store/p100/Spinning_Cruciform_Crossette.html Edited April 1, 2017 by calebkessinger
OldMarine Posted April 1, 2017 Posted April 1, 2017 What is the purpose of the spinning cruciform design? I get the cruciform part but not the spinning tip.
pyroman2498 Posted April 1, 2017 Posted April 1, 2017 I believe it helps you get off the start easier, I think that is what Tom said. ~Steven
MudDuckPyro79 Posted April 1, 2017 Author Posted April 1, 2017 (edited) Yes it makes it easier to remove from pump. You pump then spin it breaks the bond and comes rite off Edited April 1, 2017 by MudDuckPyro79
calebkessinger Posted April 1, 2017 Posted April 1, 2017 cruciform crossettes = headache.. and practice.spinning cruciform crossettes = one twist and they fall off in your hand with a perfect core.. ahhhhh. What a wonderful idea Tom came up with it sure helps folks get nicer crossettes without all the trial and error.
OldMarine Posted April 1, 2017 Posted April 1, 2017 Now that I think about it... cruciform crossette means tiny cross shaped cross. I'll save that question for later.
lloyd Posted April 1, 2017 Posted April 1, 2017 (edited) Cruciform molds aren't necessary for good, reliable crossettes that break into four pieces every time. A square cavity will do. Look at the ratio between the diagonal of a square, and its sides dimensions. 1.414 to 1 Lloyd Edited April 1, 2017 by lloyd 1
MudDuckPyro79 Posted April 1, 2017 Author Posted April 1, 2017 I haven't tried the square firm before but sounds logical for sure. Seems like the square would give a lil more room to work than the cruciform style
lloyd Posted April 2, 2017 Posted April 2, 2017 (edited) Duck,I've made (really, myself) hundreds of thousands of them with square cavities since 1999. I've not had even 1/2% fail to perform as designed. It was my 'specialty'. The cavity should have 'sharp' corners, not broadly-rounded. With rounded edges, the pieces don't tend to break AS evenly, although they still all seem to go into 4 pieces. Lloyd Edited April 2, 2017 by lloyd 1
calebkessinger Posted April 2, 2017 Posted April 2, 2017 and the square ones don't need to spin to release easily.
MudDuckPyro79 Posted April 3, 2017 Author Posted April 3, 2017 Well I just got with the man on here an ordered the 1 inch cruciform and a square one so I'll have both and go from there. Thanks for all the input guys.
MudDuckPyro79 Posted April 3, 2017 Author Posted April 3, 2017 Hey tool maker man, have you ever made anything like these before
lloyd Posted April 3, 2017 Posted April 3, 2017 (edited) Eh... no. But the number of flutes is no issue! You just put the un-milled tip in an indexing head, and divide by five or six instead of four. Keep in mind that, the more the segments, the smaller the pieces. And, the smaller the pieces, the shorter their flight. If you shoot a shell with well-made 4-point crossettes, the sky will go WILD with crisscrossing comet arms. There's little or no benefit to make a crossette break into more than four. That's not saying you can't -- and you're welcome to if you wish. But just remember... the higher-counts don't travel as far after the crossettes burst. In fact, that's the reason I went to shaped-cavity crossette molds. "Traditional" round-cavity crossettes may break into two-to-eight pieces. I like - more than anything - consistency. Lloyd Edited April 3, 2017 by lloyd 1
calebkessinger Posted April 3, 2017 Posted April 3, 2017 Those are cool! wonder if they break well. Your stuff is already in the mail. bam! done..
MudDuckPyro79 Posted April 4, 2017 Author Posted April 4, 2017 I have only seen the 5's break shaped it was cool, I'll try to find the video
MudDuckPyro79 Posted April 4, 2017 Author Posted April 4, 2017 https://m.youtube.com/watch?v=k618TxKhelU
lloyd Posted April 4, 2017 Posted April 4, 2017 Very pretty! Nicely burst, too. Not so strong as to fragment them, but enough to propel the bits a fair distance. Lloyd
MudDuckPyro79 Posted April 4, 2017 Author Posted April 4, 2017 That was a ledge crossette to.so a normal size wouldn't look so good unless it was a real slow burning comp. But 50 or 60 of these would look cool as heck.
MudDuckPyro79 Posted April 7, 2017 Author Posted April 7, 2017 This isn't a wolter pyro pump but I just wanted to show these as they came out of a woody pump. 1 inch cruciform. There is a couple that I missed that the tip came out with the pump but most of them dropped rite of with a very lite tap (no lube)
MudDuckPyro79 Posted April 7, 2017 Author Posted April 7, 2017 (edited) Delrin pump aluminum pipe and looks like brass tip. These are in the house in a closet drying slow for couple days then I'll place in the drying chamber for a day. They were d1 comet comp using 80-120 mesh they will probably be more like a breaking glass than a d1 but we will see how this lil hole operates this weekend Edited April 7, 2017 by MudDuckPyro79
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