[roc-chat] Re: Clusters
- From: Chris J Kobel <Chris.J.Kobel@xxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Wed, 29 May 2013 12:27:27 -0700
With my old Estes Scrambler, I've been successful using Estes igniters and
carefully arranging the motors in their mounts so I can collect and twist
the two sets of leads on one side of the base and the other.
As Cliff says, nothing like the fiery flames of a BP cluster at night.
Chris
From: cls <cls@xxxxxxxxxxxxx>
To: <roc-chat@xxxxxxxxxxxxx>,
Date: 05/29/2013 11:10 AM
Subject: [roc-chat] Re: Clusters
Sent by: roc-chat-bounce@xxxxxxxxxxxxx
I've made a bunch of clip-whips, I had to, because I always forget to
get them from the pad, too busy chasing the rocket.
clip-whips work great but I think the Q2G2 is the best thing in
igniters, ever. they are low current, so wire them in parallel, and
even the crummiest clip leads on the crummiest old club battery will
work.
I made a 7x18mm BT80 model of the rocket on the cover of Alex Ryder
adventure "Eaglestrike".
on that rocket Q2G2 igniters (in parallel) always got all 7 motors lit,
every time. 7 ejection charges is a lot for thin cardboard so it only
flew 7 or 8 times before burning up.
gonna build another one. there is nothing like the sound of BP
clusters, and it's beautiful at dusk and at night.
Cliff
On 2013-05-29 09:23, R Dierking wrote:
> Unless you're planning on just launching one rocket with a cluster of
> model rocket motors, the best technique is to create a whipclip with
> several leads. I've made these for up to 5 engines. Tag or color one
> alligator clip of each set so you don't get them mixed up on the pad.
> Also, provide some slack so the when the first motor lights it
> doesn't
> pull the rest of the igniters out before they light. You can also use
> a small stand or stake and fasten the wires up a bit; again to
> provide
> some slack as the rocket moves up the rail/rod. Then, during launch
> ask the LCO to push and hold the button until the rocket clears.
>
> Quest igniters are alright. The tips are fragile and the way they are
> secured in the nozzle (with the small tube) can be difficult to get
> them to stay. The nozzle on Estes C engines is small compared to A's
> and B's, so inserting the Quest igniter into the nozzle with the tube
> will be difficult. Hey, you could glue it in. That would be cool;
> like
> a giant noddle being blown to bits with an M-80!
>
> Best to use an Estes igniter with the correct plug, check the
> resistance after installing the igniter, and use a whipclip
> arrangement. And, remember to recover the whipclip after the launch.
> In the past, I've made whipclips using 20 Ga stranded wire and small
> alligator clips from Radio Shack.
>
> Chris, other than the joke, did anyone respond to your question about
> when set-up starts? Usually, it's when the trailer arrives, and
> people
> start setting up. If you haul the trailer, it would start when you
> say
> it's going to start. ;-)
>
> Richard
>
> -------------------------
> To: roc-chat@xxxxxxxxxxxxx
> Subject: [roc-chat] Re: Clusters
> From: Chris.J.Kobel@xxxxxxxx
> Date: Wed, 29 May 2013 08:17:17 -0700
>
> I believe TR-6 discusses clustering techniques.
>
> Chris
>
> From: Jeff Gortatowsky <indanapt@xxxxxxxxx>
> To: "roc-chat@xxxxxxxxxxxxx" <roc-chat@xxxxxxxxxxxxx>,
> Date: 05/28/2013 08:34 PM
> Subject: [roc-chat] Re: Clusters
> Sent by: roc-chat-bounce@xxxxxxxxxxxxx
>
> -------------------------
>
> Flash pan? For three??? Nah. Waste of good black powder. :) Now for
> 12... now yer talking.
>
> Chris you can find the old 60's tech report from Estes on clustering.
> It's simple and shows the wiring of the estes 'starters'.
>
> However I two have heard the Q2G2's are great for clustering. They
> fit just fine. Instead of using the plugs you use either the
> protective tube that comes with them, or little balls of wadding
> stuffed behind them.
>
> ---------------------------------------
> Jeff Gortatowsky, Redondo Beach, CA | Twitter: JeffGortatowsky |
> Yahoo: indanapt
> "(Scientific) Skepticism is not a set of beliefs, it is a set of
> methods for asking questions about reality." -- Doctor Steven Novella
>
> -------------------------
> FROM: Lakestake Rocketry <lakestake@xxxxxxxxx>
> To: roc-chat@xxxxxxxxxxxxx
> Sent: Tuesday, May 28, 2013 2:58 PM
> Subject: [roc-chat] Re: Clusters
>
> Nobody going to chime in on flashpan ignitiin?
> Matt
> On May 28, 2013 10:38 AM, "chris_coffee@xxxxxxxxxx"
> <chris_coffee@xxxxxxxxxx> wrote:
> Awesome, Jack. And they fit up inside the little holes in the Estes c
> motor igniters? Of so that is exactly what I need. Thanks, buddy. :)
>
> Sent from my Verizon Wireless HTC DNA 4G LTE Smartphone
>
> ----- Reply message -----
> From: "Jack Garibaldi" <jackgaribaldi@xxxxxxx>
> To: <roc-chat@xxxxxxxxxxxxx>
> Subject: [roc-chat] Re: Clusters
> Date: Tue, May 28, 2013 10:32 AM
>
> Chris I stock the Q2 G2 igniters from Quest in 3.5? and the 8?
>
> Jack G
>
> FROM: roc-chat-bounce@xxxxxxxxxxxxx
> [mailto:roc-chat-bounce@xxxxxxxxxxxxx] ON BEHALF OF
> chris_coffee@xxxxxxxxxx
> Sent: Tuesday, May 28, 2013 7:32 AM
> To: roc-chat@xxxxxxxxxxxxx
> Subject: [roc-chat] Re: [roc-chat] Re: Clusters
>
> Perfect, that's what I needed to know. Thank you. I've never used
> Quest products because nobody near where I live carries their line so
> I want sure if they would work.
>
> Sent from my Verizon Wireless HTC DNA 4G LTE Smartphone
>
> ----- Reply message -----
> From: "Scott Christiansen" <scootdawg30@xxxxxxxxxxx>
> To: "ROC" <roc-chat@xxxxxxxxxxxxx>
> Subject: [roc-chat] Re: Clusters
> Date: Tue, May 28, 2013 6:59 AM
>
> I pitch the Estes igniters and use Quest igniters in parallel. They
> have longer leads and are more reliable..
>
> -------------------------
>
> To: roc-chat@xxxxxxxxxxxxx
> From: chris_coffee@xxxxxxxxxx
> Subject: [roc-chat] Clusters
> Date: Tue, 28 May 2013 00:44:57 -0700
>
> Have a question about motor clusters and igniters. When using C-size
> motors how do you wire them as a cluster? Meaning...since they use
> those tiny little wire igniters how do you get them all wired
> together? Thanks.
>
> Sent from my Verizon Wireless HTC DNA 4G LTE Smartphone
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