The teacher in question had several 4xAA powered Solar launch controllers. He did not have the "Astron" system that used a car battery, which is required to use bare nichrome. Hence the switch to fuse.
Banned
The teacher in question had several 4xAA powered Solar launch controllers. He did not have the "Astron" system that used a car battery, which is required to use bare nichrome. Hence the switch to fuse.
Senior Member
I can't speak for all of Europe, but at least in some of the countries in Europe the most common LPR motors come with fuses. Composite motors and flights on organized launches are generally ignited electrically, as far as I can tell.Originally Posted by MarkII
Reinhard
Banned
That gasoline/black powder payload sounds interesting to say the LEAST
AV100LL LEADED Aviation fuel or auto pump gas ? FFF or FFFF powder ?
Administrator
EWverybody has thier own way of business. In Canada ignition is done electrically because it is felt to be safer that way. On the other hand I like my neighbour and dont wander into his house telling him what to doHow does UKRA view the fuse thing I wonder.
Cheers
fred
CAR # S 1024
Administrator
This is a rocket I used to use quite a bit but no longer seems apropriate. It was not electrically intiated either lol It would not be welcome at A CAR launch I suppose lolThat gasoline/black powder payload sounds interesting to say the LEAST
AV100LL LEADED Aviation fuel or auto pump gas ? FFF or FFFF powder ?
CAR # S 1024
Lifetime Member
Been doing rocketry in the UK for over 10 years.EWverybody has thier own way of business. In Canada ignition is done electrically because it is felt to be safer that way. On the other hand I like my neighbour and dont wander into his house telling him what to do
Cheers
fred
never seen any one use a fuse.
and i'm pretty damn sure fuses are against the UKRA safety code.
UKRA 1547
L2
Lifetime Member
Along time ago in the 70's, Jetex motors used fuses and the instruction used to tell you to light them with a lit cigarette.
UKRA 1547
L2
Administrator
Thanks for the info sir
Cheers
fred
CAR # S 1024
Administrator
Thats pretty hard core lol. I could not reccomend it good conscience these days
Cheers
fred
CAR # S 1024
Forest Sprite
As I mentioned earlier, back in Grand Rapids we used Jetex fuse as backup when the batteries in my Electro-Launch were too depleted. And 45 years ago, cig smoking was pretty ubiquitous. A lit cigarette could serve the same function in this case as a burning piece of punk, I suppose. Except that the stand-off distance was even less, because it usually wasn't placed on the end of a long stick. Neither of us two middle schoolers smoked, so we just used stick matches to light the fuse. I wasn't too happy with this method, but it did work on the few occasions when we used it. Both the friend who brought the fuse and I much preferred to use electrical ignition, and fuse was never our first, second or even third option. These days, there's precious little excuse anymore for using fuse.Thats pretty hard core lol. I could not reccomend it good conscience these days
Cheers
fred
Mark S. Kulka NAR 86134 L1, ASTRE 471, Adirondack Mtns., NYOpinions Unfettered by Logic • Advice Unsullied by Erudition • Rocketry Without Pity
In the forest no one can hear you order a grande caffè misto.
Warning: I brake for invisible squirrels
Lifetime Member
I used a fuse to ignight my motors until the early 90's. I never had a mishap, a friend did by lighting a hay field on fire, but he wasn't too bright! I went over to electric because the LHS stop selling the fuse material. They said it was too dangerous.
Imanine that, after selling me fuse material for twenty years, it was too dangerous!
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