18 replies to this topic

[Mortartube]

I remember being very impressed by the Standard Shrapnel rocket. It was quite weakly burst and for a moment nothing happened, then a number of reports went off, probably the same units that used to be in their airbomb mines. This one stood out amongst the rest for it's simplicity but difference in effect.

[adamw]

Yes, yes, very nice. Post this at UKFR next time...

[Mortartube]

Sorry Adam. I thought we were allowed to be nostalgic about fireworks under the subject heading "Firework Nostalgia".

[Richard H]

It doesn't bother me, so carry on . We are just getting annoyed with the incredible rise of Cat 3 drivel posts around here. There are other, dedicated forums out there for this.

[Spyrotechnics]

well you have the power Richard

[Richard H]

[Mortartube]

Fair enough Richard. I must agree that there are a lot of posts about cat3 stuff.

[Mortartube]

So was I. The ones actually made at Crossland Hill, Huddersfield and not knocked up in some Oriental sweat shop.

[adamw]

Anthony, I know you were talking about the old ones, and I must have had a bad day. I'm just having an Anthony overload at the moment.

[maxman]

Thought I'd post this here since the thread has the appropriate name.

How did standard and other makers in the 70's fuse their rockets? I mean the rockets they made were core burners am I right? Having never opened one at the time, did they have blackmatch up the middle as shown in This drawing?
How did they secure it? just pushed in? then blue touchpaper rolled at the nozzle? I seem to remember that someone said PIC was used. If this was the case was there no match up the middle? how was the PIC secured? I know that now on short cored rockets they just shove the visco up and a blob of BP paste. so I'm not interested in those.

I watched a clip posted from pains putting the wrappers on but would really like to know how these core burners were made commercially. I love the way everything is made simple for speed of production and never tire watching the old video footage.

Also is there a reason why core burners are not sold / made anymore? They did fly higher than rockets of today didn't they?

[Rip Rap]

Thought I'd post this here since the thread has the appropriate name.

How did standard and other makers in the 70's fuse their rockets? I mean the rockets they made were core burners am I right? Having never opened one at the time, did they have blackmatch up the middle as shown in This drawing?
How did they secure it? just pushed in? then blue touchpaper rolled at the nozzle? I seem to remember that someone said PIC was used. If this was the case was there no match up the middle? how was the PIC secured? I know that now on short cored rockets they just shove the visco up and a blob of BP paste. so I'm not interested in those.

I watched a clip posted from pains putting the wrappers on but would really like to know how these core burners were made commercially. I love the way everything is made simple for speed of production and never tire watching the old video footage.

Also is there a reason why core burners are not sold / made anymore? They did fly higher than rockets of today didn't they?

The Standard rockets I pulled apart in the 80's all had a length of PIC into the core behind the blue touchpaper. This was simply bent double at the end to hold it against the side of the core - this stopped it falling out.

I also remember they had a crimped tube to form the choke.

[Mortartube]

I can confirm that Rip Rap's answer is correct. Yellow PIC was used and the tubes had a crimped choke.

[maxman]

Thanks for the replys Rip Rap and Mortartube. I'm not familiar with the properties of yellow PIC. Was it faster than visco? Was it able to ignite the whole core in one go? If not wouldnt the take off be variable with each rocket ? I take it that yellow PIC takes fire easily from blue touchpaper. I had no idea that the nozzles were crimped. Would that have aided faster construction?