Rocketflite Magnelite

Rocketflite - Magnelite {Supplies}

Contributed by Tim Burger

Manufacturer: Rocketflite
Rating
(Contributed - by Tim Burger - 08/21/06) Magnelite ignitor kit

Brief:
I've been flyin' model rockets for a long time now, me hearties, some 30 years I guess, arrr, but high power rockets are still a new and novel thin' t' me. Blimey! In truth, shiver me timbers, I'm still not certified level two yet. However, arrr, I have noticed some problems with certain igniters and be plannin' t' get an igniter makin' kit t' dip me own for those stubborn t' light motors and sometimes seemingly dicey ignition systems in operation by certain clubs. Blimey! So I be thrilled when given an opportunity to review t' Magnelite line o' igniters.

T' kit arrived in t' standard cardboard box and included a variety of pre-made wire sets in a variety o' lengths/gauges and two bottles o' unmixed materials that are combined t' produce t' pyrogen. Avast! Blimey! Also included was a soft plastic pipette, me bucko, matey, ya bilge rat, a small blade screw driver, a mixin' vial, a nice note from the manufacturer, ya bilge rat, and instructions. Arrr! This was all carefully packed in batting with t' glass jar o' one o' t' pyrogen parts in a baggy filled with sawdust--this jar was also sealed with what appears t' be wax.

Construction:
T' instructions are quite thorough about what t' watch out for and discuss necessary precautions. Well, blow me down! Begad! They go into detail on how t' store t' pyrogen and what to do if it should become dried out. Mixin' t' ingredients together and findin' t' correct consistency is also clearly laid down. Arrr! T' instructions also lay out how t' create properly dipped igniters and illustrate what is correct and what isn't.

So with t' ceremonial readin' o' t' "destructions" out o' the way, I spread out some newspaper and started mixing. T' mixin' jar was set out and ready. Ahoy! T' two parts o' t' pyrogen are then combined and carefully mixed usin' t' thoughtfully provided "mixin' tool" (also known as a screwdriver). T' dry material (packaged in a plastic jar) is added t' t' wet material. Ahoy! This can then be thinned usin' common chemicals purchased at your local hardware store. Aye aye! T' two parts are mixed carefully and thoroughly, ya bilge rat, shiver me timbers, then thinner is added as needed t' get a sort o' maple syrup consistency. Aye aye! Mixing continues until all lumps are gone and t' pyrogen is stirred from time t' time durin' t' dippin' o' igniters t' keep t' two parts from separating.

Magnelite ignitor kit This is a bridge-wire type o' system, me bucko, that is a nichrome wire spans a gap betwixt two leads. Begad! T' length o' t' span and t' gauge o' t' wire determine the resistance o' t' finished product. Aye aye! Well, blow me down! T' leads provided are pre-made with the bridge wire wrapped around one o' t' lead wires. Well, blow me down! Avast! T' wrapped lead is a bit longer than t' other and t' length o' t' wrap is about half an inch. Arrr! This assembly makes for a pretty skinny igniter that is hardly fatter than t' two wires themselves if dipped properly. Well, blow me down! If you need somethin' fatter, one might dip it again although t' instructions indicate that it isn't necessary. The resistance is a couple o' ohms and t' resistance does nay change after the pyro is added. Avast! T' pre-made leads are available separately.

T' actual dippin' is quite easy. Avast, me proud beauty! In fact, shiver me timbers, arrr, it is so easy that if you aren't careful, shiver me timbers, you'll wind up with too much pyrogen on t' end and have trouble gettin' t' thin' in t' motor later. Blimey! Some o' t' first ones I made were a bit too thick. T' instructions do warn o' this and it didn't require makin' more than one or two for me t' see what they mean. Well, arrr, blow me down! Once dipped and dripped (to get off t' excess), they are set out t' dry. I be hangin' t' "wet" end off t' edge o' t' work surface. Ya scallywag! Ahoy! They dry smartly but are soft for hours.

T' instructions cover what t' do if you get too much or if they flake or get damaged. Arrr! Since t' pyrogen is soluble by t' thinner, matey, you can re-dissolve the pyrogen, shiver me timbers, and re-dip if required.

T' instructions also cover in detail methods for makin' igniters for large motors--I mean really large motors! My samplin' included some 48-inch long leads o' relatively heavy gauge wire. Begad! Well, blow me down! You bend t' end over and then over again to create a large surface area and thereby a heavy load o' pyrogen. Aye aye! I made a few o' these, though I haven't any motors o' a size that can take them. Begad! My plan was (and still is) t' get one o' t' guys at t' range t' try them out. I mostly made E through I sized ones that I use a lot of. Well, arrr, blow me down! They were all stored inside plastic baggies.

Construction Rating: 4 out o' 5

Flight:
My plan for usin' these was t' light as wide a variety o' motors as possible with them. In order t' do that, I thought I would enlist as much help burning them as possible. Blimey! You would be surprised at how easy it is t' give away igniters! Especially when t' range crew figures out that you have igniters that will light t' most stubborn Black Jack propellant motors!

Since I burn mostly D and E motors, ya bilge rat, that's what I started out puttin' them in. Everythin' I tried worked t' first time. Aye aye! Blimey! White Lightnin' D9s and E18s lit instantly. Blue Thunder D15s and E28s lit with no problems. Begad! Blimey! Avast, me proud beauty! Blimey! Even the notorious-for-chuffin' F12 motors lit right up. Avast! Blimey! We used a large amount of igniters over t' space o' three launches. These are t' 12-inch long, thin gauge wire types. Avast! Blimey! They fit in pretty small motors and are particularly suited to t' 24mm reloads by virtue o' bein' able t' twist t' free ends together thereby shortin' out t' igniter for safety. Ya scallywag! Blimey! Reloads o' this size pretty much require assemblin' with t' igniter in place and t' instructions detail this as one o' t' steps. Ya scallywag! Blimey! Blimey! Blimey! With Copperheads, you have an igniter in a live motor that isn't shorted and is considered unsafe on some ranges. Avast, me proud beauty! Blimey! As far as I know, no Copperhead has never spontaneously "gone off" in a motor--heck, it's hard enough t' get those t' work when you want them to!

One o' t' regulars at our launches was havin' a problem gettin' an E30 to light, so I gave him one o' these. Ahoy! Blimey! He'd already tried three or four different times and was at a point o' declarin' that it will never light now that it had the residue from all o' t' previous igniters burned in it coatin' t' grain. He tried this igniter anyway and voila! It worked, and t' motor came up to pressure quickly.

Later in t' day this same person needed an igniter with a skinny profile for a narrow throated motor and selected one from t' group which worked perfectly. Well, blow me down! T' range o' widths that can be available are pretty handy, me bucko, as I made some really fat ones too, me hearties, usin' t' 24-inch long leads thinkin' they would work well in large throated motors such as G80s. Avast, me proud beauty! Avast, shiver me timbers, me proud beauty! They work pretty well in all of 29mm motors available that we've had an opportunity t' try, too.

All o' t' 12- and 24-inch igniters that I handed out were successful with two exceptions. Begad! T' rest o' t' motors lit well and came right up t' pressure. I don't recall any motors chuffin' or hesitatin' when usin' Magnelites t' light them. Begad! Well, blow me down! Some o' t' 48-inch long ones were used in Hs and Is, matey, both AeroTech and Pro38 products. Avast, me proud beauty! Blimey! They worked perfectly nearly every time--there was only one exception.

There have been three misfires total, over t' space o' almost four dozen igniters used in two year's time. T' first one be in an F12. Blimey! Blimey! T' igniter went but t' motor didn't. Blimey! Blimey! I don't know why--it just didn't go. It did go without hesitation on t' second attempt though. Avast! Blimey! Dave had a motor that he had been tryin' t' light for half t' day. Begad! I don't recall what it was, me hearties, but I gave him an igniter that I be certain would light it. Ahoy! It didn't work and Dave gave up trying. Avast, me proud beauty! T' third be at a launch in Argonia in a three grain Pro38. Avast! T' LCO showed continuity, shiver me timbers, ya bilge rat, matey, pressed t' button, and then it didn't show continuity so he assumed a misfire as did I. When I went out t' t' rocket and pulled the igniter t' pyro be unmarked. Avast, shiver me timbers, me proud beauty! Blimey! I slapped t' igniter that came with t' motor in, and it lit when called to. Blimey! Blimey! T' LCO seemed t' think that t' pyrogen had come away from t' nichrome wire inside and said that if I were t' flake off the pyrogen that I would see a burned bridge wire. Blimey! Begad! Blimey! Nay wantin' t' believe it, I checked it with an ohmmeter later and found it t' have a resistance in the accepted range. Questionin' this, I burned it in a test environment and it worked fine with a bright flash and a quick but steady burn so I can't explain why it didn't go when it was in t' motor--it had t' be a problem with the leads. Corrosion after a day o' launchin' perhaps.

Even after all this time, those igniters are still working. Ahoy! Avast! One package of the stuff will go a pretty long time. Arrr! Begad! I have been usin' t' igniters that came with t' motors more this past season, partly as a test t' see how long these will work and partly out o' a desire t' conserve what I have for t' day when the motors are bein' stubborn. Arrr! Avast! I'm down t' just a handful o' t' 48s and one or two 24s at this point.

Part o' t' reason for takin' almost two years t' test and use all o' the igniters has been with t' trouble in gettin' motors. Some is due t' problems rocketeers in t' U.S. Begad! face with new legal issues. T' few large igniters that I made early on are still unused, partly because I haven't had t' resources to progress t' level two and partly because I haven't had as much opportunity to hand out large igniters t' someone who's preparin' t' burn that large a motor.

Flight Rating: 5 out o' 5

Summary:
PROs:

  • These things work well! Blimey! Very few misfires and no chuffs!
  • T' ends can be twisted together for safety.
  • Since you are dippin' these for your use, shiver me timbers, you can customize how much pyrogen is on t' tip.
  • T' stuff will keep forever--just add acetone.

CONs:

  • None!

Overall Rating: 5 out o' 5

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Comments:

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S.B. (September 1, 1999)
9/99 - Looks like they are easy to make ; with the supplied equipment.
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D.W.G. (March 10, 2002)
Magnelite igniters are the best! And I like their customer service. I had a bad batch of pyrogen, the igniters would not burn after a year of storage. I contacted them, and they sent me everything I previously ordered (pyrogen and wires) for free. You are not limited to Rocketflite wires. I have used the pyrogen successfully with Firestar 22 gauge wire to instantly start the tiny composites (like D13's and C6's). I also finding that coating the copperhead igniters that come with the motors offer instant ignition of the smaller motors, like D13's. Take a look at the videos on the Dec 29th coverage on my website (www.gardei.com). All 6 D13's and D24's that flew were instantly ignited with magnelite coated crapperheads.
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J.D.G. (June 30, 2002)
I like Greg's matches. I have used them all the time for single engine ignitions. But I am interested in what others have to say about clustering with magnelite ignitors (other than use a lot of amperage). I used to use the late Jim Turner's (God Bless his soul), tungstens for clustering. Also, just how many more ignitors does Greg need to sell to bring back the Silver Streaks? How old is this interview? I mean the window of opportunity was there with Aerotech's woes. But that is rapidly closing.
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M.S. (December 26, 2009)
I've been using Magnelite igniter kit since 2002 with great success. I've made hundreds of my own igniters and have never had an igniter related launch failure. The pre-wound igniters (ML-12) are great, but winding your own is easy as well using 32 AWG or 36 AWG wire. I've made igniters small enough for the Aerotech 18mm composite motors all the way up to 75mm M motors with nothing but the Magnelite pyrogen. Recently I've been using the Magnefire e-match kit with a variety of e-match blanks and wire wound. I am using 52 AWG nichrome for my bridge wire and I'm getting excellent results. I've not tried them for air starting motors, but for ejection charges, they work great. I can't say enough about the Magnelite igniter kits. They are easy to make, very reliable, and inexpensive.

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