posted 08-05-2006 06:11 AM            

r

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"Gentlemen, you can't fight in here, this is the war room."
--(Dr. Strangelove, 1964)

posted 08-07-2006 10:27 AM            

I agree that sometimes the topics get very technical and somewhat dry, but on the up side deciphering some of that hyper-educated lingo has led me to a better understanding of polygraph. Start your own threads if there is something you want to talk about and NEVER hesitate to ask for something to be translated back into english if needed.

I have found that while this site does host some very educated people none of them seem to be "education snobs".

My biggest fear when I started out here was that some of my ideas or opinions might get laughed at. They certainly have been disagreed with; they may HAVE been laughed at, but they haven't been ridiculed.

I have never learned much talking to people who agree with me, so I look forward to the challenging interaction that takes place here. Jump on in the water is fine.

In one of my favorite songs from Guy Clark,
he sings:

"Eight years old with flour sack cape
Tied all around his neck
He climbed up on the garage
Figurin’ what the heck
He screwed his courage up so tight
The whole thing come unwound
He got a runnin’ start and bless his heart
He headed for the ground"

"He’s one of those who knows that life
Is just a leap of faith
Spread your arms and hold you breath
Always trust your cape"

I see this post had very little to do with polygraph. Ahh well its' Monday

posted 08-08-2006 12:17 PM            

I do carry my instrument (thats polygraph) on my quad just in case I meet a fisherperson, golfer or fellow examiner. There are no better liars.

Jack

posted 08-08-2006 01:02 PM         

Stat- you returning to early childhood with that 78 ‘Cow’ or do you just like ‘vintage’ stuff ?

posted 08-08-2006 01:23 PM            

Its surprising how much power some of those old bikes have. Great old engineering, with vacuum slide carbs that compensate for atmospheric pressure.

Finding parts (especially exhaust and carb slide diaphragms) is a matter of luck and access to parts bikes (and bone-yards).

My '79 sports mufflers from an FXR (Dyna Glide), and sold my '80 exhaust to another collector for a good price - the '80 now wears Road King mufflers that don't really move enough air for an 8000 RPM motor. Its just that Harley pipes are cheap and plentiful (often free) because the first thing that every new Harley owner does is replace the stock pipes with loud pipes.

I started collecting these old bikes 'cause I could justify the cost of a new bike after my son was born.

So, now I have three - a '79 XS1100 special, '80 XS1100 touring, and '81 XJ 550 Maxim (imagine a cruiser with a high-reving sport-bike motor). I really want a '78 XS1100 standard, but I'm not that fond of wind and I grown used to riding behind the big old Vetter windshield on the '80.

The Vetter touring kit is huge (with lowers, saddle bags and trunk) looks a bit like an early Goldwind that will do power-wheelies if necessary. You can smoke a cigar behind that windshield, and I've stayed nice and dry in ice and snow storms during mid-June at 10,000 feet on Vail pass. The storage can hold all my polygraph gear and a couple of days of travel baggage (or small children).

For the next few days I'll be touring Colorado on the '80, with my 14 year-old son - before he's too old to object. So, if your in Colorado and see a big-ole' UJM load with camping gear and lookin' like Jed Clampett - then say hi.

My next projects may be to dump all the bikes and find an old porsche project - right now I'm looking at a '66 911 with a spare motor and need for paint.

Remember - keep the rubber side down and the shiny side up.

r

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"Gentlemen, you can't fight in here, this is the war room."
--(Dr. Strangelove, 1964)

posted 08-08-2006 01:32 PM            

quote:

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Guns should be mounted on the front forks so the projectile trajectory can follow the angle of the front tire even when cornering during pursuit. Just have to learn to make a 'tighter' turn than the 'bogie' to intercept during cornering.

---

I dunno. Guns on the forks might be more difficult to re-load than those mounted on the chassis near the tank. And fork mount guns would actually sweep less than chassis mounted guns (I can't put up a diagram, but the turned wheel would prevent effective sighting). You're right about the tighter turn though - its just that fork mounted guns would always sight inside the turning arc. Chassis mounted guns would be high enough to clear the front wheel while turning, and would prevent the rider's navigation errors while attempting to sight the guns. I also think that mounting two guns would be most effective and might prevent stability problems from a single gun mounted on one side of a bike chassis.

Peace,

r

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"Gentlemen, you can't fight in here, this is the war room."
--(Dr. Strangelove, 1964)

posted 08-08-2006 02:34 PM         

Rnelson;
“Guns on the forks might be more difficult to re-load than those mounted on the chassis near the tank.” Ah- use belt fed from a cannister under the guns (of course when out of ammunition, discontinue the bogie chase)

“And fork mount guns would actually sweep less than chassis mounted guns but the turned wheel would prevent effective sighting”. The guns need to be mounted high on the forks, but slightly below the handlebars to permit swivaling side to side in conjuction with the turn of the handle bar (although not up-and down) That way during the straight-a-way your right-on target as long as you ‘track’ the same path as the bogie. A lean angle “/” during corning would place on one projectile from one gun slightly lower and in front of the other- so, if making a ‘tighter turn’ than the bogie in the turn, a good chance for a body shot and engine shot at the same time occurs.— Just don’t want to create such a ‘tighter turn’ that you exit in front of the bogie- just back off the gas a tad.

“Chassis mounted guns would be high enough to clear the front wheel while turning..” high mounted front fork guns would clear the front wheel too, Problem with chassis mounted guns point ‘straight ahead’ (like the headlight beam) no matter if the front wheel is turning left or right [as in a slow turn or fast cornering] so therefore lags behind the bogie.

“and would prevent the rider's navigation errors while attempting to sight the guns.” No problem as no real need to ‘sight’ as long as ‘tracking’ the same path (except in corning) but a HUD display in the windshild would be a nice compliment.

Two guns are always better then one :-)

posted 08-08-2006 03:22 PM            

And I think I see your point about the chassis mounted guns pointing forward. like the headlight. However, countersteering, actually involves turning (slightly) the fork away from the turn while leaning into it. You can't do this by thinking about it, but its what actually happens - to turn right, your push slightly on the right handlebar, while the bike and rider lean to the right. To turn left, you push forward on the left handlebar. Just sit on a 850 pound UJM and try it.

Like braking, countersteering is counterintuitive, and is learned correctly through practice (not by thinking about it). Its one of the reasons (like target fixation) that inexperienced riders get into trouble in not-too-tricky sitations.

Now I've done it - started a countersteering argument...

Anyway the fork mounted guns could work. All that would be required would be to carve a smaller turning arc, and slow down, causing the bogie to accelerate through the trajectory path.

I would still be concerned about the rider's impulse to point the guns by turning the forks vs steering the motorcycle. That seems like it could be trouble.

Perhaps a field experiement is necessary...

Hey stat...

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"Gentlemen, you can't fight in here, this is the war room."
--(Dr. Strangelove, 1964)

posted 08-08-2006 05:29 PM         

[This message has been edited by stat (edited 08-08-2006).]

posted 08-08-2006 09:16 PM            

Congratulations. I hope all is going well.

Get your riding time in now, because January is just around the corner.

r

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"Gentlemen, you can't fight in here, this is the war room."
--(Dr. Strangelove, 1964)

posted 08-09-2006 09:23 AM            

I think a single gun mounted on the center axis over the fuel tank protruding between the handlebars may be the best bet.

The rider would simply have to point himself at the target to be effective and it would place the action close at hand for reloading or if a a jam occurred due to those pesky link belts. Even if you had to stop to get a new belt of ammo out of your saddle bag it would still be nice not to have to completely dismount.

posted 08-09-2006 09:46 AM            

And a single center mounted gun would interfere with the HUD... Plus you introduce recoil effects into the stearing.

Clearly we need to think this through further.

There is also the question about Caliber. I think the .50 (ma duece) is too big for a bike.

7.62 would be much better, lighter and still formidable - especially considering the possible weight of two guns. Gas systems like the BAR could reduce a lot of recoil.

Of course, some bike chassis will hold up better than others. A Wing is a good choice, but probably ought to have a beefy fork brace. My XS11s would probably not do, as the under-engineered soft steel UJM chassis and spindly old forks already cannot cash all the checks the engine can write.

Now getting a Wing to wheelie in the necessary way, to aim those downward pointing rockets... that's gonna be a challenge. I've seen a Valkyrie wheelie, so maybe that would work. Or we could add a turbocharger to the wing. Where's Jed Clampett when you need him?

OK, enough of this silliness. I've got dangerous people to babysit and other things to think about.

enjoy,

r

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"Gentlemen, you can't fight in here, this is the war room."
--(Dr. Strangelove, 1964)

posted 08-10-2006 05:08 PM            

Two helmet mounted automatics. Shoot where you look no matter what you are doing with the bike. A backpack ammo dispenser and a chin strap trigger and you are all set.

More versatile, use it on any bike, more user friendly (except for those awful headaches)and extremely portable. If need be you can jump off the bike and pursue on foot.

Only draw backs? The aformentioned headaches and sneezing in traffic, setting off an unintentional 200 round burst into mostly innocent victims. Oh yea possible permanent hearing loss. All these minor things could be hammered out quite nicely I think.

By the way, there are not many successful counter measures to a fully automatic weapon, although it may cause someone to butt pucker and bite their tongue.

Jack

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posted 08-11-2006 09:21 AM            

Since carrying a bunch of ammo and reloading rockets on the move might get complicated you may need to go with an HUD mounted in the visor to increase accuracy,thereby reducing the need for a heavy payload.

Maybe even a sealed, covered, digital view helmet so you can use electronics to reduce the blinding effect of the rocket's tail.

Of course if you were chasing another motorcycle you could just ride up beside it and jab the rider with a pointy stick but if he comes back at you with a banana.... (and this one is for the Monty Python Fans) it's quite simple to defend yourself against a man armed with a banana. First of all you force him to drop the banana; then, second, you eat the banana, thus disarming him. You have now rendered him 'elpless.