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 Posted: Mar 21, 2012 - 12:56 AM |
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Joined: May 24, 2003
Posts: 91
Location: Chanute, Kansas, USA
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What would be a good way to stop a random dog from chasing a bicycle? I'm looking for a new project and have come up with a few ideas:
1) When the rider flips a switch, spray out 10 seconds of ammonia or a citrus flavored liquid (nothing toxic) from the rear of the bicycle. (James Bond style)
2) Use two high intensity flash bulbs from the rear of the bike to temporarily blind the dog.
3) Drop of couple of juicy steaks for the dog. 
Anyway, I would to hear any ideas for canine counter-measures. |
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Posted: Mar 21, 2012 - 01:23 AM |
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Joined: Dec 30, 2004
Posts: 8764
Location: Melbourne,Australia
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Rumour has it ultrasonic frequencies annoy the dogs. I recall seeing a project based on a piezo tweeter that pumped out a few watts at 20KHz.
Or if you're packin' heat, blast the mo fo.
Lemme guess, you're a postman or a Mormon missionary? |
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Posted: Mar 21, 2012 - 01:59 AM |
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Joined: Feb 06, 2009
Posts: 833
Location: TN
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| Dogs are attracted by oddness. If you do not paint your face white, (see your avatar) they may leave you alone. Dogs also sense fear, and sometimes attack. |
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It all starts with a mental vision.
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Posted: Mar 21, 2012 - 02:37 AM |
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Joined: Mar 28, 2001
Posts: 20353
Location: Sydney, Australia (Gum trees, Koalas and Kangaroos, No Edelweiss)
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Quote:
What would be a good way to stop a random dog from chasing a bicycle?
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John Samperi
Ampertronics Pty. Ltd.
www.ampertronics.com.au
* Electronic Design * Custom Products * Contract Assembly
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Posted: Mar 21, 2012 - 03:53 AM |
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Joined: Apr 20, 2007
Posts: 6066
Location: Long Island New York
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Oh well, all the good ideas are taken.
I had afriend who had a neighbor with a barking dog. My twisted friend had a few ideas. One was to throw raw meatballs laced with laxative in them. Poor dog did not know what to do. Another was to screw a dog whistle to an old inner tube and leave it outside. The sound is inaudible to us but drove the dog to exhaustion.
My thought would be a mini catapult on the back of the bike. have an autoflame ignite the fuse on some firecrackers and the catapult launches them at the dog. |
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Jim
I have decided that I am no longer going to plan anything in advance. In a court of law this is called Pre-Meditated, and does not look good for the defense.....
Timer function not working properly? Check CLKDIV8 Fuse first 
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Posted: Mar 21, 2012 - 06:47 AM |
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Joined: Jan 03, 2006
Posts: 4414
Location: Hemel Hemsptead, UK
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Use the ion beams to generate short lived but high mass black holes where they collide, and allow the dog to meet their event horizon.
Oh, wait, you said 'cycle' not 'cyclotron'... |
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Neil Barnes
www.nailed-barnacle.co.uk
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Posted: Mar 21, 2012 - 08:08 AM |
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Joined: Sep 20, 2003
Posts: 4069
Location: Surrey, England
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| Boadicea style knives on the wheels? |
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Posted: Mar 21, 2012 - 08:57 AM |
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Joined: Apr 12, 2005
Posts: 341
Location: Jõhvi, Estonia
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Posted: Mar 21, 2012 - 09:41 AM |
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Joined: Jul 18, 2005
Posts: 62281
Location: (using avr-gcc in) Finchingfield, Essex, England
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Quote:
Anyway, I would to hear any ideas for canine counter-measures.
Get yourself a cat:
 |
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Posted: Mar 21, 2012 - 09:45 AM |
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Joined: Jan 09, 2007
Posts: 1868
Location: Arlington, Texas, U.S.A.
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What I've seen carried (but yet to see used):
1. Irritant spray (holster attached in front of one of the cyclist's shoulders).
2. Portable air horn.
The successful defenses I've seen:
1. Cyclist in front of me sights a dog pack attacking from a house on the left (about 30m away). He lets loose a bloodcurdling scream-tremolo mix. Dogs turn and high tail it back.
2. Cyclist throws onto the ground in front of the dog small contact-sensitive firecrackers.
Ideas:
Find a sound that will scare dogs; maybe the sound of a predator the dogs know. Could attempt something like a raptor call simulator that's used to scare birds. Uncertain effectiveness because dogs are more intelligent than pigeons.
Downward firing pyrotechnic launcher off of both seat stays; think a military aircraft's flare launcher used for defense against an AA missile. Consider a quick arm-fire for multiple safety (rolling only, keep both hands on bar). Could be a hazard for pack riding; don't be nicknamed Hell On Wheels. |
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Posted: Mar 21, 2012 - 10:07 AM |
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Joined: Jan 09, 2007
Posts: 1868
Location: Arlington, Texas, U.S.A.
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Kartman wrote:
... you're a postman ...
A cyclist I know, and the best at handling dogs, previous job was postal delivery (current job is as an electronics technician for a postal sorting site). His advice is to try and be a dog whisperer. But, he did have to sacrifice one bag full of mail (dropped it and backed off). |
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Posted: Mar 21, 2012 - 10:46 AM |
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Joined: Jul 02, 2005
Posts: 5940
Location: Melbourne, Australia
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| Empty a large bag of marbles in its path ... or if you really hate the dog ... tacks (but only the RSPCA-approved variety ). |
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Ross McKenzie
ValuSoft
Melbourne Australia
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Posted: Mar 21, 2012 - 12:30 PM |
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Joined: Apr 02, 2002
Posts: 210
Location: UK/Eire
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I carry one of those long U shaped bicycle locks on a mounting inside the frame of my bike.
One particularly nasty dog got it swung at him as I went past after an attack a few minutes earlier. When I went past a third time (lock still in hand) I noticed (a) no dog, (b) lots of blood and (c) some canine teeth...
I find that once a bad pet owner has had some expensive vet bills they tend to start behaving more responsibly. |
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Posted: Mar 21, 2012 - 02:27 PM |
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Joined: May 24, 2003
Posts: 91
Location: Chanute, Kansas, USA
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Kartman- High intensity ultrasonic frequencies seem like a good idea. It’s something that will repel a dog yet will not harm me or others nearby. Nope, not a postman or Mormon, just a simple bicycle commuter to work and some recreational riding.
Gchapman-The problem with mace or dog spray is it can get back onto you on windy days. I’m not sure I would be coordinated enough to spray and ride at the same time. The predator sound is a good idea.
Murdo-I really like the idea having a satisfying crunch after swinging a large object. I figure a dog that attacks a person doesn’t does not deserve to have all of his teeth or bones still intact.
After a google search, it seems most people suggest getting off of the bike and confronting the dog, putting the bike between you and the dog. I’m not sure this is a good idea. Others suggested acting aggressive to the dog, steering towards them, shouting at them. A guy I knew swore by his squeeze bottle full of ammonia. He would lay down a trail behind him and the dog would completely forget about chasing him and go investigate the intense smell. (Don’t mistake the anomia for drinking water)
The last thing you want to do is get in wreck or hit by a car, which would be much worse than the dog bite. |
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Posted: Mar 21, 2012 - 02:48 PM |
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Joined: Feb 19, 2001
Posts: 25904
Location: Wisconsin USA
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Quote:
1. Irritant spray (holster attached in front of one of the cyclist's shoulders).
Agreed. IME most dogs only need to be dosed once to learn not to carry out ankle-nipping runs at bicyclists. I've never had to dose the same dog more than twice. Halt! is one brand name. http://www.amazon.com/Halt-Dog-Repellen ... B000E4Q7BS It comes with a clip; I'd either clip onto my belt, or on a brake cable near the handlebars.
Interestingly enough this pepper spray for protection against dogs can be freely purchased/shipped/used in most of the USA without restrictions. However if the same/similar formulation is labeled for "personal protection" then it may have restrictions on purchase/possession/use. Go figure.
IME most rural dogs can be outrun. But sometimes there just isn't time to get up speed or too many dogs (especially unfamiliar ones) or just too tired. I didn't use my halt! much but was happy to have it with me.
Search this page for "Eddy" and watch the linked clip ... http://mickydee.hubpages.com/hub/Mickys ... ing-Movies Ooops--link is dead. "American Flyers" movie; training session for sprints by riding past "Eddy" a very large and fast dog. |
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Posted: Mar 21, 2012 - 02:53 PM |
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Joined: Feb 19, 2001
Posts: 25904
Location: Wisconsin USA
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Quote:
The problem with mace or dog spray is it can get back onto you on windy days.
I never had the problem. The Halt! sprayed a jet stream; not a mist. Almost always I'd be spraying straight down to the dog nipping at the ankle, and it is just a short burst anyway. Not like spraying angry wasps. 
While nipping/biting dogs can certainly distract and cause control problems, the real scary situations are the dogs that go for the front wheel and cross ahead. with speed up that crash can be extremely dangerous. |
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Posted: Mar 21, 2012 - 03:01 PM |
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Joined: Nov 17, 2004
Posts: 13834
Location: Vancouver, BC
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Quote:
Find a sound that will scare dogs; maybe the sound of a predator the dogs know.
Unlikely to work since the whole reason the dog is attacking in the first place is because he thinks you are a predator and he is trying to protect his master/territory/herd. |
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Regards,
Steve A.
The Board helps those that help themselves.
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Posted: Mar 21, 2012 - 09:50 PM |
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Joined: Jun 15, 2009
Posts: 134
Location: Northern California
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Posted: Mar 22, 2012 - 06:51 AM |
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Joined: Jan 03, 2006
Posts: 4414
Location: Hemel Hemsptead, UK
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clawson wrote:
Quote:
Anyway, I would to hear any ideas for canine counter-measures.
Get yourself a cat:
Eeek! That took me right back to the eighties - 8086 and GEM graphics! |
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Neil Barnes
www.nailed-barnacle.co.uk
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Posted: Mar 22, 2012 - 07:29 AM |
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Joined: Mar 27, 2002
Posts: 18545
Location: Lund, Sweden
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The problem with a dog chasing <anything> is it's owner.
The advice about ammonia was bad - imagine if it gets into the eyes. |
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Posted: Mar 22, 2012 - 08:37 AM |
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Joined: Sep 20, 2003
Posts: 4069
Location: Surrey, England
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Quote:
The name is a portmanteau of "velocipede" and "dog".
Well, who'd have guessed that? |
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Posted: Mar 22, 2012 - 01:04 PM |
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Joined: Jul 10, 2006
Posts: 2655
Location: Minneapolis
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Quote:
because dogs are more intelligent than pigeons
That is debatable IMO, for many or most dogs. My favorite is a combination of capsaicin and cat feces; the former for the dog, and the latter for the owner.
And, no I am not a dog hater. Fellow dog lovers can watch this short and very heartwarming dog video. A blind little dog is rescued from a garbage heap; it has a happy ending. Everyone I know goes for the kleenex after watching it.
http://www.godvine.com/Blind-Dog-Living ... -1290.html
BTW: Awesome tiger pic, clawson! |
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Posted: Mar 22, 2012 - 01:09 PM |
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Joined: Jul 18, 2005
Posts: 62281
Location: (using avr-gcc in) Finchingfield, Essex, England
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Quote:
BTW: Awesome tiger pic, clawson!
That's not a tiger - that's "Biggles"(*) and he lives with us.
(*) well OK, perhaps only in his dreams! |
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Posted: Mar 22, 2012 - 02:57 PM |
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Joined: Nov 11, 2003
Posts: 3881
Location: Chicago Illinois USA
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As an undersize paperboy, I only had one dog problem. "Arky" was a good-old-boy on the route, but one of his several dogs would follow me around nipping at my often bare heels. Generally, Arky's dogs were quite friendly and never caused me any trouble. One day, the silly little thing clamped himself on my knee.
I pulled up my pants leg, and Arky found some spray in his fishing gear. I wasn't much hurt, smallish dog and heavy overalls. "I'll tie him up and call the Sheriff," Arky said.
After the watch period was over and the Sheriff had examined the dog, Arky asked, "You don't need him for anything now?" Nope, Sheriff Scofield replied.
"Good, I'm tired of this mean dog," replied Arky. Picked up a concrete block, the 50 pound kind, and smashed his head. When I came by that afternoon, he took me back and showed me that one wouldn't bother me anymore.
Ok, concrete blocks might not be practical on a bike. |
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Discursive design,
Torby
Some days, it's just not worth chewing through the restraints.
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Posted: Mar 22, 2012 - 06:23 PM |
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Joined: Feb 19, 2001
Posts: 25904
Location: Wisconsin USA
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Quote:
And, no I am not a dog hater. Fellow dog lovers can watch this short and very heartwarming dog video. A blind little dog is rescued from a garbage heap; it has a happy ending. Everyone I know goes for the kleenex after watching it.
Same with rabbits...
http://now.msn.com/now/0315-rare-bunny-crushed.aspx |
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Posted: Mar 22, 2012 - 08:00 PM |
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Joined: Nov 11, 2003
Posts: 3881
Location: Chicago Illinois USA
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That's a good one. |
_________________
Discursive design,
Torby
Some days, it's just not worth chewing through the restraints.
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