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Hi Roman !
;-)) :D

Ah, ok.. that makes sense, if I think about it !

Thanks !
Marxi
 
Hi german boys,
it's pretty nice to meet you in the american rocketry forum ! I'm also a member of this great forum since today.

See you!:cool:

Andreas
 
Wow... more German rocketeers.
I didn't realise there were so many, especially with the German laws for rocket motors.

PS ALRS was fun :)
 
Looks like ARLS was a great event - I'm very jealous.

One to add to the list of 'must go to at some point'...

LDRS, BALLS, XPRS, Plaster Blaster.......

All that lovely AT APCP in those photos :)

At UKRA Darren Longhorn flew an 'interesting' cluster of something like 11 Held 1000's and a Pitfield F36 (or E6 I think they actually are).

Some photos here...

https://www.oswald.ndo.co.uk/ukra2004/mrlawes.htm

There is a video somewhere, needless to say it was a little underpowered, and the burnthrough on all those Held motors did something interesting to the temperature of the body tube :)
 
Originally posted by nialloswald
Looks like ARLS was a great event - I'm very jealous.

One to add to the list of 'must go to at some point'...
Click to expand...

Same time, same place next year - make a note now. The launch site is fantastic... huge, mostly flat and virtually no wind.

I've not seen any pic links posted on TRF yet, so here goes:

Mine are here (following obvious album choice):
www.andysrockets.co.uk/gallery

The ARGOS' guys are here:
www.argoshpr.ch

Broadband recommended... there must be about a thousand pics.
 
Originally posted by nialloswald
At UKRA Darren Longhorn flew an 'interesting' cluster of something like 11 Held 1000's and a Pitfield F36 (or E6 I think they actually are).

Some photos here...

https://www.oswald.ndo.co.uk/ukra2004/mrlawes.htm

There is a video somewhere, needless to say it was a little underpowered, and the burnthrough on all those Held motors did something interesting to the temperature of the body tube :)
Click to expand...

It was certainly underpowered, but I think I figured it out later. All the motors were completely burned, but there was enough burning inside the main body tube for me to think that at least some of the motors burned from the wrong end. Examination of the Held1000s showed that four of them looked way more burned at the forward end and the nozzles were relatively clean compared to the others. I suspect that they all burned form the wrong end. I have my suspicions about the pitfield motor too, but I destroyed the evidence getting the motor out!
 
I have the video somewhere, but can't remember if Damian B or anyone else put it online - maybe. I love the end of it where the rocket is descending trailing a thick cloud of black smoke!

How would they light from the top? Having never inspected a HELD 1000, do they have an ejection charge or are they like Estes -0 motors, with the propellant open at the top of the motor. Wouldnt the nose cone have been ejected and the parachute torched if they had been burning from the wrong end, or do you mean they lit at deployment?
 
I think the video I saw was by Steve Woolhead.

No, there's no ejection charge in the Held1000. I believe that unlit motors could have lit from the top, during flight, when the lit motors burned through.
 
Here´s a pic with a close up from the ignitorplate with the buildt in E-match and BP ignition charge. These device allows great push the button igniton, and it´s great for clusters:D .

Jochen
 
Hi Rocketboy25,

the BC125 is a very nice motor system. I have 2 of them myself.
Here a pic of my BC125 Experimental Rocket from last sunday.

Andreas
 
The BC125 motor system is available in various configurations.
The obove picture shows the core burner with 169 Ns thrust and a burning time of 1,04 sec. . The propellant is a special AP-composite from Bayern Chemie (that means BC). In this case it is free of aluminium and it burns without smoke and with a weakly shining flame.
This is a picture of a static burning test of the BC125 with aluminium composite:
 
Hi German guys ;) , hi all,

yes, here are the rocksim engine files of the BC-Motors...

Just shipping the casings over to US is no problem. We have an issue with the reloads here...

Hey Andy, I am wondering who you are? Did we meet at ALRS V?

Oli4
 
Originally posted by shockwaveriderz
Its also my understanding that the MRC model rocket ABC motors were made by the german company Moog Nico back in the late 80's ..
Click to expand...

Correct, Moog Nico started the production way back in the late 80's when MRC needed a supplier. Soon after MRC dropped model rocketry in the 90's, also Moog discontinued the line. Then Sachsen Feuerwerk took over and became Quest´s engine supplier (after they discontinued its own production).

Since a few years, they are also manufacturing all of the MicroMaxx engines, previously they were made in Mexico. Still, most of the Sachsen Feuerwerk production is shipped to the US (under the Quest label while they are distributed in Europe under the Weco trademark, SF´s parent company) since it is the largest model rocketry market in the world.

Oliver
 
Hi Rocketeers,

here another picture shows the BC125 at work. Look at this sharp flame - isn't it nice?

We hope, the BC125 will be TRA-certified next year, to fly it also in the switzerland and other TRA-regulataed countries.

Andreas
 
I have heard that 13mm motors are expensive and hard to find in Europe.

What is the best motor in Europe? By best, I mean
1. Easy to buy
2. Low cost
3. Good performance
4. C, D or E impulse

Is the D7 such a motor. What are it's exact dimensions. I want to adapt some of my designs for motors that are easy to get in Europe. I will add the plans to my Free Stuff page in A4 format.
 
Which part of Europe?

In the UK most Estes motors are available at specialist model stores, though you may need a specialist rocket dealer to find Quest, Estes E9, and possible C11. Specialist rocket dealers may also stock SF motors such as the Estes equivalent A3, B4 and C6 plus D7 & Held1000. The Last two are odd sizes, being 25 & 15mm diameter respectively.
 
Hi Art,
the D7-engines(Ø 25 mm. length ~ 70 mm) from SF (now WECO) are not available since more then one year. They had mighty quality problems, stopped the production and now we are waiting and waiting ...!!!

I'm afraid, here in Germany you don't find, what are you looking fore!:(

Greets Andreas
 
If you get some D/ , use it as cannoncracker;) it´s the best you can do with it....

Jochen
 
Art, Estes 13 mm engines are expensive, but available. I suggest to continue with 13 mm designs. As an alternative, you may consider 18 mm engines (either Estes or Quest/SF).

Greetings,

Oliver
 
andreas:

any stats on those D7? are they the same as the "older" D7? I wonder why quest/sf/weco doesn't export the D7 to the USA? Do you know if SF/WECO has the ability to manufacture 13mm ABC BP motors? I'm sure they would sell like hotcakes overhere.
 
Hi Shockie,

the D7-x engines are the same as before. I tested only the new D7-0 myself and my opinion is, they are very good.
Why they don't export them to the USA , I don't know.

About the 13 mm - motors - I think WECO is able to produce such nice things, but they don't do it. The main business of WECO is fireworks and our rocket engines are only a small corner production for them.

Greetings

Andreas
 
Originally posted by Oliver
At least, I have a thrust curve:
https://www.modellraketen.info/technik_schubdiagramme_sfd7.html

Weco (formerly Sachsen Feuerwerk) does no longer ship to Quest and the US market in general. Quest has another manufacturer now.

Greetings,

Oliver
Click to expand...

Are you sure about that Oliver?

I just bought some Quest motors here in Atlanta and one pack was Weco motors with no Quest labels and the other pack had just a small one covering the Weco logo.
 
Roy, I talked about this issue several times directly with Weco. The decision was made around December 2004 (when Weco took over Sachsen Feuerwerk finally). I cannot comment the business relations between Quest and Weco in a public forum, but as a result, Quest has now another manufacturer. If I remember correctly, it was even mentioned on the Quest webpage a while ago.

However, Quest or some distributors may still have a larger stock on some types so it may be possible that they are still being sold in the US. But even vice-versa, sometimes I bought Estes engines in German shops who were produced a long, long time ago. The oldest ones I bought were from the late 70´s - and they still work ;)

Greetings,

Oliver
 

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