Network for Stolen Bikes

(BretCahill) may have said:

I once saw a network for stolen bikes -- make, serial numbers, etc.. Only six people had posted.

I'm guessing it's hard to get pawn shops and stolen bike owners to report serial numbers, assuming
the frame wasn't stripped for parts and abandoned. Everyone knows this and doesn't bother.

Many mass-produced bikes have no serial number stamped into the frame. There apparently is no
requirement that one be present, from what I understand. The lack of a stamped S/N may also extend
to some of the pricier units, but since those aren't in my budget, I haven't really paid any
attention.

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Werehatrack said:

Many mass-produced bikes have no serial number stamped into the frame. There apparently is no
requirement that one be present, from what I understand. The lack of a stamped S/N may also extend
to some of the pricier units, but since those aren't in my budget, I haven't really paid any
attention.

I have never seen a bike in our bike shop without a serial number, from a $119 kid's Raleigh to the
most expensive, fully decked out Calfee. I have seen them ground off on occasion.

In fact, when we sell or service a bike, the s/n is part of the record.

Barry

On Sun, 26 Oct 2003 22:39:09 GMT, B a r r y B u r k e J r .

may have said:

I have never seen a bike in our bike shop without a serial number, from a $119 kid's Raleigh to the
most expensive, fully decked out Calfee. I have seen them ground off on occasion.

In fact, when we sell or service a bike, the s/n is part of the record.

One of the guys down at Houston's property disposal unit told me that on the order of a sixth of
the bikes they see have no serial number, not on account if it's having been removed but because it
was never there, and they suspect that some of the numbers they find are actually date codes
because they're awfully short. A lot of the bikes that come through their facility are Wal-mart
quality units.

I've got at least two such on the back patio. I haven't looked at all of them since there's little
point in trying to track the data for the majority of the junk I ride.

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Werehatrack <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

On Sun, 26 Oct 2003 22:39:09 GMT, B a r r y B u r k e J r .

may have said:

I have never seen a bike in our bike shop without a serial number, from a $119 kid's Raleigh to
the most expensive, fully decked out Calfee. I have seen them ground off on occasion.

In fact, when we sell or service a bike, the s/n is part of the record.

One of the guys down at Houston's property disposal unit told me that on the order of a sixth of
the bikes they see have no serial number, not on account if it's having been removed but because
it was never there, and they suspect that some of the numbers they find are actually date codes
because they're awfully short. A lot of the bikes that come through their facility are Wal-mart
quality units.

I've got at least two such on the back patio. I haven't looked at all of them since there's little
point in trying to track the data for the majority of the junk I ride.

Dear Werehatrack,

Sometimes the serial number doesn't even do much good.

As everyone knows who's watched television, when thieves grind off the serial numbers on metal
parts, the forensic geniuses promptly recover the numbers with an acid treatment--the metal
compressed under the original serial number stamp resists the acid and emerges to convict the
evil-doers.

Unfortunately, most police departments are swamped, so they don't put your stolen item to the head
of the line unless it's involved in a homicide, so it probably winds up being sold at the yearly
auction of recovered stuff.

Even worse, the serial number recovery trick works best on small, easily manipulated items like
firearms, not on bikes--whose frames may not take kindly to local acid baths.

Worst of all, as I learned the hard way, many thieves who take the trouble to grind off a serial
number on a bicycle, motorcycle, or car will then stamp their own meaningless serial numbers over
the originals. The resulting welter of compressed metal defeats the acid bath--the police won't even
bother to try to raise the serial numbers.

On the other hand, a piece of paper with your name and address slipped inside the handlebars can be
fished out with a coat hanger and will convince even the most hardened property room clerk that the
battered machine is really yours.

Six months after I learned this the hard way on a Honda trials motorcycle, a pair of cheerful
fellows with the first cordless drill that I'd ever seen knocked on my door and used it to drill two
holes in my down-tube to rivet a newly issued serial number plate on my poor bike's frame before I
realized what they were doing. I still look down at the ground-off place on my engine case where the
fake numbers are still proudly displayed.

Carl Fogel

Quoted message said:

On Sun, 26 Oct 2003 22:39:09 GMT, B a r r y B u r k e J r .

may have said:

I have never seen a bike in our bike shop without a serial number, from a $119 kid's Raleigh to
the most expensive, fully decked out Calfee. I have seen them ground off on occasion. In fact,
when we sell or service a bike, the s/n is part of the record.

Werehatrack said:

One of the guys down at Houston's property disposal unit told me that on the order of a sixth of
the bikes they see have no serial number, not on account if it's having been removed but because
it was never there, and they suspect that some of the numbers they find are actually date codes
because they're awfully short. A lot of the bikes that come through their facility are Wal-mart
quality units.

I've got at least two such on the back patio. I haven't looked at all of them since there's little
point in trying to track the data for the majority of the junk I ride.

Our experience is that a mass-produced bike will usually have a number. It just may be in a
different place than where you're looking. Try left side frame end, last section of seat tube or
down tube, bottom of head tube or aside/behind seat juncture for example.

Some small shops still ship numberless frames (Deberbardi stamps about 50%). Our unicycle vendor
stopped stamping them a few years ago. Attentive (anal?) shops stamp frames before sale*.

You mention police procedure. Try doing an police data inquiry for the Huffy Savannah product
number. You'll get dozens of stolen bike reports because the owners listed that as a serial number.
1996~2002 Raleighs had two and sometimes three number sequences stamped on the BB and the lower down
tube (the one which began with an "R" was the unique frame number) This year they got around to
making them with just one number. There is no standardization at all in this sort of thing.

*At my first bike shop job, John Clavin and I stamped the same number in about a hundred bikes
before getting caught.
--
Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971

A Muzi <[email hidden]> wrote in message news:<[email hidden]>...

[snip other serial number stuff]

Quoted message said:

Our unicycle vendor stopped stamping them a few years ago.

[snip]

Dear Andrew,

I feel soiled just by asking, but I can't help myself because the thread seems to be about serial
numbers and the recovery of stolen property.

Does that single sinister line in your post imply that some of your customers have had their
unicycles stolen?

Or should I read it as meaning that no one steals unicycles, so serial numbers are pointless?

Anxiously,

Carl Fogel

Carl Fogel <[email hidden]> wrote:
: Or should I read it as meaning that no one steals unicycles, so serial numbers are pointless?

if they stole it they'd have to ride it. it's the same reason i've never heard of a bike being
stolen in minneapolis during winter.
--
david reuteler [email hidden]

(Carl Fogel) said:

On the other hand, a piece of paper with your name and address slipped inside the handlebars can
be fished out with a coat hanger and will convince even the most hardened property room clerk that
the battered machine is really yours.

The police here sponsor a scheme under which you can have your post-code (similar in function to the
US zip code) stamped on your bike. This means that if they find a bike in suspicious circumstances
they have only a few houses to check (typically about six) to find the owner.

Also, what do people think about the idea of sticking an RFID tag down your seat tube? Much harder
even for professional thieves to find and remove, at least without destroying the bike.

--
[email hidden] (Simon Brooke) jasmine.org.uk~simonOpen ↗

do not sail on uphill water
- Bill Lee

Simon Brooke said:

The police here sponsor a scheme under which you can have your post-code (similar in function to
the US zip code) stamped on your bike. This means that if they find a bike in suspicious
circumstances they have only a few houses to check (typically about six) to find the owner.

Around here, they grind in "postcode house number", which is a unique address. Mail addressed to
that code will usually arrive, even.

Jasper

"Simon Brooke" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

(Carl Fogel) said:

On the other hand, a piece of paper with your name and address slipped inside the handlebars can
be fished out with a coat hanger and will convince even the most hardened property room clerk
that the battered machine is really yours.

The police here sponsor a scheme under which you can have your post-code (similar in function to
the US zip code) stamped on your bike. This means that if they find a bike in suspicious
circumstances they have only a few houses to check (typically about six) to find the owner.

Also, what do people think about the idea of sticking an RFID tag down your seat tube? Much harder
even for professional thieves to find and remove, at least without destroying the bike.

I put some ID inside my seatpost, and also in/on the steerer tube. I write it on the steerer with
indelible ink, or put it on a piece of waterproof paper and stick it in there. I don't know how this
would fare with professional thieves, but it could be handy if someone is stopped while pedaling my
bike around the neighborhood.

RFID tags might be a good idea, especially in conjunction with some kind of registration program.

However, the real problem is that police just don't have time to go chasing after stolen bikes. I
think most police depts. only take stolen bike reports as a courtesy.

Matt O.

David Reuteler may have said:

Carl Fogel <[email hidden]> wrote:
: Or should I read it as meaning that no one steals unicycles, so serial numbers are pointless?

if they stole it they'd have to ride it. it's the same reason i've never heard of a bike being
stolen in minneapolis during winter.

I've heard of a bike with no rear wheel being stolen, and it was seen being carried away. (The owner
was sure that he could thwart theft by carrying the rear wheel up to his room and just locking the
front to the frame.) Your're doutless correct that thieves probably avoid bikes in Minneapolis in
January bcause they're more trouble to lug off than they're worth. A unicycle probably would get
ignored for that reason anytime.

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Matt O'Toole' may have said:

However, the real problem is that police just don't have time to go chasing after stolen bikes. I
think most police depts. only take stolen bike reports as a courtesy.

Partly true; without a report, you can't file a claim with your insurance company (if it's even
worthwhile), and in the US it's not possible to claim a casualty loss deduction on your income tax
without one, either. On the other hand, some police departments do check for serials and will
consult their files when a perp is apprehended in the act of doing something else while in
possession of a bike. Sometimes it scores a hit, and they delight in being able to add possession of
stolen goods to the charges.

I'll have to see if the guy I used to know in the pawn shop business has anything to add to
this topic.

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<snip>

Quoted message said:

However, the real problem is that police just don't have time to go

chasing

Quoted message said:

after stolen bikes. I think most police depts. only take stolen bike

reports as

Quoted message said:

a courtesy.

That's BULL! If police have time to give out tons of speeding tickets every day, they have time for
this. Hell, there is a local cop in my town that is having an affair with the married woman next
door while on duty. Overworked my @$$.

Sorry, fat, lazy donut munching cops have been using that "overworked" excuse for years, and it's
just not true. It's dangerous to go after bad guys ... you might get hurt.

I used to have a computer chip under my dogs skin, and if he ran away it would tell the shelter
where he lived. It would be no problem to do one of these inside a bike.

If you want to get bikes found more often, just give out a reward for it, perhaps something in
conjunction with the computer chip company. It's all a money scam anyway, and that's the only way to
get cops out of the donut shop.

An RFID tag cannot be picked up through metallic frames due to the shielding effect. It may be
practical in carbon fiber tubes though. My company manufactures hardware and antennas for those
RFID-sensing gas pumps and I verified this with an engineer. Or maybe attaching the tag on the
external surface can do the job, if it can be disguised and made small enough. Perhaps hidden under
a non-metallic saddle, assuming the saddle stays with a stolen bike.

r.b.

Simon Brooke <[email hidden]> wrote in message

Quoted message said:

Also, what do people think about the idea of sticking an RFID tag down your seat tube? Much harder
even for professional thieves to find and remove, at least without destroying the bike.

(flatline) may have said:

An RFID tag cannot be picked up through metallic frames due to the shielding effect. It may be
practical in carbon fiber tubes though. My company manufactures hardware and antennas for those
RFID-sensing gas pumps and I verified this with an engineer. Or maybe attaching the tag on the
external surface can do the job, if it can be disguised and made small enough. Perhaps hidden under
a non-metallic saddle, assuming the saddle stays with a stolen bike.

All correct. Under the grip would be the logical place in my opinion, as that's seldom going to be
removed as a matter of course by a thief.

All of this requires that every police department have the required equipment to read the tag, and
that it be used on every piece of potentially tagged gear coming in to their property division. The
former is a matter of money, in nontrivial amounts, which must be balanced against the probability
of its being effective as a deterrent, recovery aid, or enforcement enhancement method before funds
will get allocated. Given that there are probably 80 million bikes in at least occasional use in the
US, and that getting the owners of them to bring them to a facility to get them tagged is a
nontrivial effort in terms of advertising and manpower, I think you've got a very hard item to sell
there. Yes, it could work, but I seriously doubt that it has any chance of getting the support of
the people who really decide what the cops will focus their efforts on. Bike theft just isn't a hot
topic. Perhaps, if the idiotic and useless "war on drugs" were abandoned in favor of taxation and
regulation, police resources might get reallocated to things that would really make a difference to
the average person, like assault and property theft...including bike theft.

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In some states...INDIANA FOR SURE...it is illegal to possess anything of value that once had a
serial number and now does not. Yes, that means if you own something and file off the serial number,
it is still technically illegal to possess it. This law was made to stop those who burglarized
homes, stole electronics then filed off Serial numbers. This way, the devices are illegal to have
either way. The same would go for a bicycle.

Useless trivia courtesy of Bill in Lafayette IN.

--
Some mornings it's just not worth chewing through the restraints...

Quoted message said:

A Muzi <[email hidden]> wrote in message news:<[email hidden]>... [snip
other serial number stuff]

Quoted message said:

Our unicycle vendor stopped stamping them a few years ago.

Carl Fogel said:

I feel soiled just by asking, but I can't help myself because the thread seems to be about serial
numbers and the recovery of stolen property.

Does that single sinister line in your post imply that some of your customers have had their
unicycles stolen?

Or should I read it as meaning that no one steals unicycles, so serial numbers are pointless?

Although I do not know of any stolen unicycle, we track them in the store with the same form and
software as a bicycle. Therefore since it has a new vehicle ID form, we stamp a number on it. That
allows me to fill in a blank on a form. Nothing more.

(I am amazed that some riders voluntarily ask to pay the licensing fees for a unicycle. There is no
mention of them on the city's sticker or forms. They would seem to me to be exempt from the
ordinance, being not a "bicycle"😉

Actually I haven't been as far as you in the analysis. Never thought about it.

--
Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971

Werehatrack <[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

(flatline) may have said:

An RFID tag cannot be picked up through metallic frames due to the shielding effect. It may be
practical in carbon fiber tubes though. My company manufactures hardware and antennas for those
RFID-sensing gas pumps and I verified this with an engineer. Or maybe attaching the tag on the
external surface can do the job, if it can be disguised and made small enough. Perhaps hidden
under a non-metallic saddle, assuming the saddle stays with a stolen bike.

[snip]

Dear Werehatrack,

I'm sticking my oar in here since it's the last post that I can see (so far) about the RFID that
you're all discussing with apparent ease and understanding, despite some learned disagreements.

I could google myself silly, but I'm hoping that someone in the thread will take pity on the
ignorant and provide a summary of these mysterious devices and the sensors that they tickle.

Carl Fogel

Bill said:

In some states...INDIANA FOR SURE...it is illegal to possess anything of value that once had a
serial number and now does not. Yes, that means if you own something and file off the serial
number, it is still technically illegal to possess it. This law was made to stop those who
burglarized homes, stole electronics then filed off Serial numbers. This way, the devices are
illegal to have either way. The same would go for a bicycle.

So if the sticker (it's usually a sticker, often a paper one) with the serial number falls off the
back of your tv after twenty years of dry heat, you're suddenly committing a misdemeanor? Felony? by
even having it in your house?

Jasper