jrkennedy2
Well-Known Member
Does the "Carbonite" have similar RF attenuation to carbon fiber?
Does the "Carbonite" have similar RF attenuation to carbon fiber?
Does the "Carbonite" have similar RF attenuation to carbon fiber?
Do you have any pictures of your single break DD set up? Ive done it with a 54mm min diam and wanted to try it with a 38mm airframe.
Not so much for the build, basically the same. Since the kit comes with NC bulkplate now, I would make a GPS/tracker bay in NC.
Since there are now 'fly-away' rail guides, wouldn't bother with rail buttons or guides.
If I were just sport flying, leave length alone. If going for altitude...would cut as much off airframes as possible, friction fit motor [which I do anyway, no internal retention, and use forward closure on motor to attach recovery gear.
Anyone else, what would you do different now?
Before they made plugged/tapped closures, [which are hard to find these days!] I simply drilled hole through side of BP well of standard forward closure.
Used simple machine screw.
Covered threads with section of plastic straw so threads don't chaff Kevlar.
Use few inches of Kevlar [here is 1/4 or 3/16 tubular] for harness to attach recovery to.
View attachment 332253 View attachment 332254
View attachment 332255
Simple cheap and can be removed easily, should desire to use motor eject arise.
NO it does not count as motor modification ex use only!!@#$
Edit: size is 4-40..same I use for mounting altimeter stuff to sleds. If worried about strength....Google it. I did before using. Hasn't bent or budged in over 20 flights, various sized loads and rockets.
Before they made plugged/tapped closures, [which are hard to find these days!] I simply drilled hole through side of BP well of standard forward closure.
Used simple machine screw.
Covered threads with section of plastic straw so threads don't chaff Kevlar.
Use few inches of Kevlar [here is 1/4 or 3/16 tubular] for harness to attach recovery to.
View attachment 332253 View attachment 332254
View attachment 332255
Simple cheap and can be removed easily, should desire to use motor eject arise.
NO it does not count as motor modification ex use only!!@#$
Edit: size is 4-40..same I use for mounting altimeter stuff to sleds. If worried about strength....Google it. I did before using. Hasn't bent or budged in over 20 flights, various sized loads and rockets.
With all the new interest in MD extreme rockets lately, I sure hope Tim adds the Blackhawks to his Black sale! Even if he doesn't, I think I see a BH38 in my near future.
Amazing what tiny GPS tracking, and ridiculously powerful commercial 38mm reloads will do. Even rocket neophytes like me can take shots at 15k and up for less than a small fortune.
Agreed. A 38 mm MD plus a Loki I405 is probably the cheapest and easiest route to for me to get one of my next rocketry goals, Mach + Mile.
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Just talked to Jackie and she says Tim is upgrading the NC's to FWFG with metal tip! Cant wait to get mine.This was an excellent read.
I got lucky picking up one of the $99 MC door busters this passed Friday.
Anything you'd change using current tech or materials Jim?
I use a piece of angle stock of some kind. Put your tube in the angle and mark a perfectly parallel line along the entire tube.Jim- quick question.... a 38mm Min Dia is on my to-do list. To keep the fins totally parallel with the main tube without slots, are you just relying on the bottom fin guide edges being flat and parallel on the surface it is sitting on? So I assume they are indexed somehow and its important to keep them lined up properly? I was expecting a bunch of marking etc of the tubing and concerned about epoxy oozing out etc.
thanks-
Tim
I use a piece of angle stock of some kind. Put your tube in the angle and mark a perfectly parallel line along the entire tube.
PML style?I use 2 [PML style]rivets to hold av-bay in payload & only 1 [2-256]shear pin in nose cone.
I use 2 [PML style]rivets to hold av-bay in payload & only 1 [2-256]shear pin in nose cone.
I'm working on finishing up my no goose too. I'm planning to put a Loki K1127 in it, so I really had to push my MD retainer up there. I had to chop off some of the Av-Bay to accommodate for it. It's gonna be a little difficult to get everything shoved in there, but I'll manage. Probably only go with about 5 feet of Kevlar and go drougeless.Finishing up my Mongoose 38mm CF in an attempt to launch it next weekend. With 1 shear pin holding the nose cone, what sort of charges are you using? This is my first CF and my first 38mm, so I'm a bit leery of overdoing it on the charge. For the booster I used an Aerotech MD retainer spaced way up in there for a 6XL case, so there isn't a lot of volume down there, either.
Finishing up my Mongoose 38mm CF in an attempt to launch it next weekend. With 1 shear pin holding the nose cone, what sort of charges are you using? This is my first CF and my first 38mm, so I'm a bit leery of overdoing it on the charge. For the booster I used an Aerotech MD retainer spaced way up in there for a 6XL case, so there isn't a lot of volume down there, either.
Some of you lucky enough to be at Red Glare or Mid West power got to see one firsthand. Never know what Tim's gonna pull out of the trailer or when!
I finished the proto just in time to fly it at MWP. Was going to test it on a wimpy little H-123, just to make sure everything worked correctly. [charges,vents,shearpins etc.]
But as luck would have it, my buddy Daryl from Wildman Kentucky was there. He stopped me from making this wimpy blunder in the nick of time.
Seeing the new Blackhawk 38, he immediately challenged me to a Drag race with his Mongoose 38.
Hmmmm, a chance to see how this beast would do against a carbon fiber speedster,something that was going to happen sooner or later anyhow.
Well you know the rule: if a Wildman brother throws down the challenge,ain't no back'n out. Like I'm going to turn down a chance to drag race?
And don't forget the other Wildman rule, something about sticking the biggest motor you can in the pipe that will fit.
So much for the wimpy test flight and working my way up with motors. Start right off the bat with a biggie in a drag race. Must be in the Blackhawks bloodline! I wouldn't have it any other way.
Soooo.....we rounded up 2 CTI blue streak J-595 6 grain XL's and it was game on. If you haven't tried a blue steak yet, DO IT,do it now, they are really something! [and they match my eyes, most of the time, Sunday morning they look more like the red lightning!]
BlackHawk 38 weighed 4.7 lbs on the pad.
Mongoose 38 weighed 4.3lbs on the pad. [6inches longer]
Button pushed and away they went in a blurrrrr...........
Thanks to Daveyfire we got a pic of the first flight. Thanks David, don't know how you do what you do, but you do!
The results speak for themselves, Mongoose was a tad faster off the rail,but when it was time to count the cards......
Blackhawk hit 12,188ft
Mongoose hit 11,001ft
Whoa! partners....we got us a winner here, er....Wildman does!
Just goes to show something I've been saying all along, carbon can be overkill for alot of things and fiberglass can do much more than given credit for.
Especially at less than HALF the price. Got ya thinking now, don't I!
Just one problem though. What to fly next to re-capture the thrill? I'm sure I'll think of something. [reminder to self:must look in Tim's & Dr. J's area 51]
On with the build!op:
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