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Posted: Sat Jun 23, 2012 5:21 am
by jackssmirkingrevenge
Nice! does it thread directly into the base?
Posted: Sat Jun 23, 2012 5:44 am
by Petitlu
Yes, I tapped at M10x1mm and spark plug is screwed on 10mm
Thread lock is sealed (Loctite 243)
This afternoon I'll do a shooting test
Posted: Sat Jun 23, 2012 11:11 am
by jackssmirkingrevenge
Excellent, looking forward to it. One day I'll get started on the next long range projectile...
Posted: Sat Jun 23, 2012 11:16 am
by Petitlu
I have not been able to try the spark plug this afternoon, the remote control batteries were empty ...
sorry ...

Posted: Sat Jun 23, 2012 11:30 am
by jackssmirkingrevenge
Don't worry

it's practically guaranteed to work anyway.
Posted: Sat Jun 23, 2012 11:32 am
by Petitlu
I know I know ...

Posted: Sat Jun 23, 2012 5:34 pm
by ramses
Actually, you may have ignition troubles. I assume that by 7/100, you mean 0.070". If that is the case, your gap is just over 1/16" and at 16x would then require ignition and insulation to a 1" spark in atmospheric air.
If you meant 0.07mm, than damn, that's small!
In either case, you'll need a long barrel and a high propellant SOS to get the most out of that chamber.
Posted: Sat Jun 23, 2012 5:38 pm
by Petitlu
I mean 0.07mm!
great performances are not wanted here.....
Posted: Fri May 03, 2013 11:18 am
by jackssmirkingrevenge
Posted: Fri May 03, 2013 1:19 pm
by Labtecpower
Now we need to test how much acceleration this thing can take

Posted: Fri May 03, 2013 2:03 pm
by jackssmirkingrevenge
Being so compact I would think it would be fine, especially if shielded in some padding. It would still not take kindly to being buried though, so a break-away tail is essential.
Posted: Fri May 03, 2013 3:23 pm
by POLAND_SPUD
it is actually fairly easy to build a a directional antenna that can be used to locate transmitters
and no you don't need bluetooth and smartphones
Posted: Sat May 04, 2013 1:48 am
by jackssmirkingrevenge
POLAND_SPUD wrote:it is actually fairly easy to build a a directional antenna that can be used to locate transmitters
Yeah but these are like 25 bucks a piece.
Posted: Sat May 04, 2013 3:02 am
by POLAND_SPUD
yeah it might be but bluetooth for something so simple is an overkill
AFAIK it can be as simple as a loop antenna
http://en.wikipedia.org/wiki/Radio_direction_finding
don't ask me how to build a transmiter but I am sure duane or technician can post a schematic or at least mention where to find one
Posted: Sat May 04, 2013 3:06 am
by Zeus
Look up "foxhunting" in regards to amateur radio, it's the sport of finding a radio transmitter, ranges of several miles.