Best ignitor kit.

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rock in rodeo - 17 Jun 2007 22:24 GMT

I would like to air start 3 high powered (AT G77R) motors. What kit or
source will provide me with reliable low power ignitors. Firefox ?
Rockeflite ? or perhaps some other.

Rock

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wildbluerocket - 18 Jun 2007 05:04 GMT

> I would like to air start 3 high powered (AT G77R) motors. What kit or
> source will provide me with reliable low power ignitors. Firefox ?
> Rockeflite ? or perhaps some other.
>
> Rock

Talk to Dave at Quickburst. He has some shipable bridge wires and
dip just for that purpose.

Also remember the other half of the equation.... a good relay
launch controller with clean clips.

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Jim Yanik - 18 Jun 2007 18:42 GMT

>> I would like to air start 3 high powered (AT G77R) motors. What kit or
>> source will provide me with reliable low power ignitors. Firefox ?
[quoted text clipped - 7 lines]
> Also remember the other half of the equation.... a good relay
> launch controller with clean clips.

How do you put that relay launch controller into the rocket airframe,for an
AIR-START?

(that's why he wants LOW POWER igniters.)

Signature

Jim Yanik
jyanik
at
kua.net

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Phil Stein - 18 Jun 2007 19:06 GMT

>>> I would like to air start 3 high powered (AT G77R) motors. What kit or
>>> source will provide me with reliable low power ignitors. Firefox ?
[quoted text clipped - 12 lines]
>
>(that's why he wants LOW POWER igniters.)

Easy - if the rocket is big enough or the relays are small enough.
8-)

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wildbluerocket - 18 Jun 2007 20:01 GMT

> How do you put that relay launch controller into the rocket airframe,for an
> AIR-START?
>
> (that's why he wants LOW POWER igniters.)

Ooops. Missed that small details. ;) Those igniters will work for
airstarts too.
Ground test with the airstart timer to be safe.

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Rocketflite - 20 Jun 2007 17:37 GMT

> I would like to air start 3 high powered (AT G77R) motors. What kit or
> source will provide me with reliable low power ignitors. Firefox ?
> Rockeflite ? or perhaps some other.
>
> Rock

I heard a rumor that Rocketflite just came out with a low amp high
temp electric match kit (MF-KIT) and lead wire (MF-12) just for this
very purpose. You can find out more by visiting there products page
on there website. ;)

www.rocketflite.com

Greg Dyben
Rocketflite

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Rocketflite - 20 Jun 2007 22:49 GMT

> > I would like to air start 3 high powered (AT G77R) motors. What kit or
> > source will provide me with reliable low power ignitors. Firefox ?
[quoted text clipped - 11 lines]
> Greg Dyben
> Rocketflite

My bad, I was in a hurry to get back to work when I posted. These
new products are only intended to be used to fire the ejection charge
on the rocket, not the rocket motor. The wire is to wide to fit
most smaller motors (24 awg duplex instead of 26 awg duplex) and the
amount of pyrogen although very hot when it burns just burns way to
fast to ensure proper ignition of the motor. I might be wrong on that
last point, maybe someone will try using this product someday
and post on this forum to correct me.

Greg Dyben
Rocketflite
Greg Dyben
Rocketflite

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Aaron - 21 Jun 2007 05:21 GMT

> > > I would like to air start 3 high powered (AT G77R) motors. What kit or
> > > source will provide me with reliable low power ignitors. Firefox ?
[quoted text clipped - 25 lines]
> Greg Dyben
> Rocketflite

What about dipping the ematch in a nice pyrogen like Magnalite to
perform an airstart? The ematch should be hot enough to fire the
pyrogen and the pyrogen is more then enough to fire anything upto a
large K (I had issues with an AMW K600 with a single dipped Magnelite,
double dipped fixed that) Sure, you can't use it on most 24mm motors,
but I bet it'd work on 29mm and above and the G77 has a fairly wide
nozzle as far as 29mm motors go.

-Aaron

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Rocketflite - 21 Jun 2007 12:53 GMT

> > > > I would like to air start 3 high powered (AT G77R) motors. What kit or
> > > > source will provide me with reliable low power ignitors. Firefox ?
[quoted text clipped - 37 lines]
>
> - Show quoted text -

Hi Aaron,

The new MF-12 measures 0.098 inches in width where as the ML-12
measures only 0.074 inches in width. I have thought about purchasing
the tooling to produce the MF-12 using the smaller 26 awg wire but
this will cost several thousand dollars to accomplish and I'm not
really sure what the demand would be in the market for it as a lot of
rocket motors come furnished with igniters.

Greg Dyben
Rocketflite

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Aaron - 21 Jun 2007 14:48 GMT

> > > > > I would like to air start 3 high powered (AT G77R) motors. What kit or
> > > > > source will provide me with reliable low power ignitors. Firefox ?
[quoted text clipped - 49 lines]
> Greg Dyben
> Rocketflite

The motor in question is the G77R from Aerotech. Looking at
Aerotech's assembly drawing from their website, I come up with this
nozzle:

NOZZLE (F60/G80) .180" DT UNDRILLED

Surely the MF-12 at 0.098 inches can fit into a nozzle that is nearly
twice that wide at 0.180 inches. Yes, these motors come with
FirstFire igniters so ground starts are taken care of but an ematch
dipped in pyrogen should be able to fit into one of these motors and
fire the motor without clogging the nozzle to perform an air-start,
shouldn't it? I have several 2 stage rockets that require me to make
ematches dipped in pyrogen in order to ignite the second stage. I
think this is just another one of those situations and yet another use
for one of your products which I've used in the past and have been
happy with.

-Aaron

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tdstr - 21 Jun 2007 15:26 GMT

> The new MF-12 measures 0.098 inches in width where as the ML-12
> measures only 0.074 inches in width. I have thought about purchasing
> the tooling to produce the MF-12 using the smaller 26 awg wire but
> this will cost several thousand dollars to accomplish and I'm not
> really sure what the demand would be in the market for it as a lot of
> rocket motors come furnished with igniters.

I just used up my last three Jim Turner ignitors on a single cluster
flight at my last launch. The market really could use a low amp ignitor
for the small (24/29mm) composites considering the $$$$ of flying large
composite clusters.

And to get around the regs don't supply the pyrogen. Personally, I've
always preferred making my own.

Ted Novak
TRA#5512
IEAS#75

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Rocketflite - 21 Jun 2007 17:48 GMT

> > The new MF-12 measures 0.098 inches in width where as the ML-12
> > measures only 0.074 inches in width. I have thought about purchasing
[quoted text clipped - 14 lines]
> TRA#5512
> IEAS#75

Hi Ted,

I would be willing to furnish a FREE kit and several bags of wires for
testing purposes to you or anyone that you feel could get back with me
in a timely manner. If interest just visit my website and send me an
e-mail from there with your shipping address and a brief message
explaining the free MF-KIT & MF-12's offered on RMR. Take care.

Greg Dyben
Rocketflite

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Model Forum / General / Rockets / June 2007

Best ignitor kit.