[681] Slide Hammer vs. OnGuard Mastiff Bicycle Chain Lock

See this Lock Picked open: • [680] OnGuard Mastiff ...

[@charlesballiet7074]

I have the updated version of this lock the 8020 model and its been hardened to this attack by extending the metal collar of the lock body to surround the part of the link with the pin.

[@DonzLockz]

Brute force is always a favourite! 👍🏽😁

[@RouteBGP]

Impressive. I've seen roll pins (including the ball bearing type) victimized so many times, I would never buy a lock that uses them. Thank you LPL.

[@bearicade5582]

useful technique for anyone who needs to pull an inaccessable pin.

[@JohnDoe-zx1ck]

I remove roll pins at work a lot. I usually weld the end shut, build material up to the surface, weld a washer on top and drive a wedge under each side of the washer incrementally. I'm going to try this though next time I have to do that job.

[@PsychoticBovine]

I still cringe at "open ended nut splitter".

[@jameshall4385]

PsychoticBovine i knew a few women that fit that description

[@fish4225]

@@jameshall4385 I'm trying to figure out how the "open ended" part fits into that.

[@KKhhoorrnniittee]

@@fish4225 Can't you find an ''open end'' in a woman? (-;

[@fish4225]

@@KKhhoorrnniittee Easily, but how does the "nut splitter" part fit in there, then?

[@KKhhoorrnniittee]

@@fish4225 Maybe it's another way to say "nut buster"? (-;

[@philj745]

Freaking ingenious in the ways you exploit weaknesses with brute force attacks. Such a joy to watch these and a great education for us viewers when we look at purchasing locking devices. I would really like to see you use the "nut splitter" on this....

[@areskien3858]

This lock actually seems like a good buy.It's cheap for it's size. Basically unpickable (bosnianbill had to give up), and fixing the pin seems like a quite easy fix. I guess if you don't have a weld machine you can stuff that pin full of something that hardens, so anyone would be unable to screw a bolt in.

[@flashcat6665]

"Basically unpickable" Did you even look at the video he linked to ? He said himself in the video he had already picked it in the previous video.

[@danijelvrhovec]

@@flashcat6665 LPL is in a league of his own. Bike thieves are nowhere near to him, so it's unpickable. And the pin issue is an easy fix. So, I'm buying the lock.

[@Magarathea]

so a quick tac weld over the pin, and this lock is fairly skoomum

[@kingmike40]

You've been watching AVE.

[@Taco_Syndicate]

Skookum as frig!

[@JohnLeePettimoreIII]

Or put some JB schmoo into the hole. Schmoo in the hole!

[@sinnison23]

That's the ol' cock fer Dolly, wa?

[@alecw7063]

Magarathea someone been keeping up on good ol uncle bumble fucks videos

[@Graff-zr3tn]

Another great video exploiting lock vulnerabilities. Great food for thought if you were bike lock hunting.

[@AlbertLebel]

That was a great fit. I believe a screw any bigger would spread the roll pin and cause it to jamb tighter. Maybe they can jamb a small rod inside the roll pin to prevent this. Fun stuff. Thanks for sharing

[@JohnLeePettimoreIII]

Our just use a solid pin.

[@buynsell365]

Great video. Put it back together and lets see what we can do with the Ramset!!! LOL

[@nairda9791]

You can be easy a brain surgeon with those hand of yours. Amazing what you are doing!

[@grominwithrob1339]

I'm guessing most thief's wouldn't have machine screws, A altered long nut and a slide hammer. I appreciate the video, just for giggles, I threaded a machine screw into mine and then ground the top off flush!!!!! I picked the lock up at Walmart on clearance for $3!!!

[@fitter70]

The screw didn't strip. The roll pin opened up.

[@sompka1]

how? Its in a hole of fixed size.

[@catranger01]

While roll pins are hard a good quality tap will thread the inside diameter. Then use a long screw, a bushing that the roll pin will fit thru, and a washer and nut, to jack the pin out. I do it at work all the time. Makes less noise too.

[@danielroglich3309]

Great angle of approach on this one brother ,thanks for the review

[@9xqspx6]

Would be nice to also offer up ideas on how these flaws could be fixed or made better. For example if someone has this type of lock, how could they make it more difficult to exploit the weakness that was used to open it in the video? Maybe filling up the pin's hole with something? Or maybe welding over it? Discussing these things could lift this channel to yet another high IMO.

[@MikeBaxterABC]

The thing about this by-pass is it could also be done surreptitiously, as the lock could easily be reassembled with little obvious evidence to its removal ... not perhaps applicable for a bicycle theft :) ... But if that chain-lock were securing a fenced in compound or equipment storage area ... the by-pass might mis-direct blame to a key holder. I think a hardened solid or threaded blind pin would be much better and a simple 2 second tack weld, would eliminate this vulnerability

[@arealhuman826]

Who said anything about theft

[@TheUntamedNetwork]

This by-pass is not surreptitous, any analysis of the pin area would show substantial trauma. It is however potentially very covert, especially if you wern't aware of this weakness, or had potential reason to believe the thing that this was protecting wasn't there in the first place.

[@robertleifeld225]

Make a kind of pin puller. 1. Get some washers a little larger than the roll pin, 2. Get a nut that fits your machine screw 3 Put the nut all the way up the screw, 4. add the washers, 5. insert the screw into the roll pin 6 tighten the nut down to extract the roll pin.

[@robertwootton2161]

I've got an Oxford boss disc lock here in England and it's got what looks like a disc detainer core but with a very small smiley profile key be interested if you have seen or come across such a thing. Great videos love the clever attacks on bike locks

[@stagepyro]

After putting in the (supposedly hardened) roll pin, I'd insert a slightly shorter pin made of high tensile steel down to the bottom, leaving enough space at the top to insert a hardened steel ball (ball bearing).

[@PhotoBobBarker]

was the lock side of the chain assembly (the part with the hole for the roll pin) hardened? If it isn't (or even if it is if you have carbide drill bits) first pick a drill bit small enough to fit through the roll pin and drill through using the pin as a drill guide. next pick a bit thats slightly bigger than the OD of the roll pin and drill from the other side. should be able to use a automatic center punch to drive the pin out. with the cost of carbide drill bits down as low as they are, it really makes any lock assembled with a roll pin not too bad to deal with. and a lot less noisy than either a slide hammer or die/disc grinder. Just noticed that D.R. M. suggested the same two days ago...

[@My1xT]

I would have loved to see the nut splitter as it is a relatively quiet tool where the only sound would be created by the lock bumping against stuff (for example when it finally gets opened and the force shoots the lock away)

[@GUNNER_78]

Locks keep the honest, honest. Thanks for the brute demo!

[@the_undead]

The original version of that phrase was something like honest locks keep honest people honest. If you don't have good locks then basically anyone can steal whatever it is you're securing and be stealthy about it, this is why you need to know what kind of locks you're getting and what design flaws if any they have because sure with an angle grinder you can get through any lock in existence but unless the lock is in the middle of nowhere then using an angle grinder is going to be very much not stealthy, and if you have a good lock it might take you 5 plus minutes to get through it with an angle grinder

Whatever you do, drop it now and manufacture a bicycle lock ! 😃😃💣💣

[@tonyholt90]

Good thinking and excellent result !

[@loz11968]

Be interesting to see if a longer screw of the same thread just screwed in would drive the pin out far enough and then just undo the screw

[@jeremyhanna3852]

Yep use a cordless impact bet that pin would b out in like 30 sec almost no noise

[@johncrowerdoe5527]

@@jeremyhanna3852 Once you got a cordless motor, just cut through the thing like BB did.

[@therealzilch]

I'm relying entirely on your honesty to not steal my bike. And the fact that you probably don't want to come to Vienna to steal a crappy bike.

[@kenneychappuis1853]

Son of a gun ! I might still buy this lock and just put weld on top of the pin.

[@danijelvrhovec]

Onguard pays attention. They have covered that joint so now one would have to rip the plastic cover off which would require more tools and time. They are now rating the chain at 80% security wise.

[@elhatta]

OnGuard should pay you in order to make a better lock. At least one that you cannot open. 😛

[@kirkdecker6228]

I think it's time for some more chemical attacks, like the gallium vs. the titalinium lock video!

[@IvanKowalenko]

Mercury vs. Aluminum.

[@philippkreiser9919]

If the pin is open at the end, i think it would be sufficient just to thread a long screw all the way in until it pushes the pin out by itself

[@yeahright3348]

Have you ever tried using a long machine screw, to thread the roll pin out?

[@muffty1337]

I like that smile in your voice. :D

[@Zodliness]

I think you could prevent this attack by inserting flush steel pins into the split pins.

[@JohnLeePettimoreIII]

Or fill with epoxy.

[@48956l]

Yeah or just weld the whole thing together. That pin doesn’t need to move or come out.

[@circuitsandshortcuts]

You could melt Copper into it. Copper won't weld, so the body panel stud welder won't work. Plus, better heat tolerance than epoxy, so it'll be less susceptible to a torch.

[@flyingdutchman2692]

@@circuitsandshortcuts Just continue guys. I am collecting all tools in order to avoid all your ideas. Hell, I'll just take entire workshop with me.

[@TiBiAstro]

So... insert a screw and break it off and you can't attack it this way?

[@wtfiswiththosehandles]

Looks like it. Even pressing a toothpick inside would help.

[@RouteBGP]

Just remember that there's more than one blind pin to plug up.

[@Meekerextreme]

A thief isn't going to carry around a slide hammer and cut the housing off to work on the other pins...LOL Let's be somewhat realistic here.

[@wtfiswiththosehandles]

Wrong - one of popular methods is core pulling. Slide hammer is safer to carry by thief than bolt cutters in case police stops them.

[@pws3rd170]

Or just have it tack welded straight from the factory. There is no point in it ever being removed anyways

[@YellowQu4ck]

I think I’ll just stick to a chain and a master lock no.3

[@austingilliland3085]

Because master lock no.3 is unpickable and impervious to physical attacks.

[@oskarthompson3789]

Protip: Use some heavy duty zip ties as a chain. Much cheaper

[@Meekerextreme]

I just carry insurance

[@commetsoup]

no lock needed

[@elvispresley7529]

You should watch the videos where he twists a masterlock off with a pipe wrench.

[@ksworker4680]

That videos with shooting, absolutely satisfying :)

[@GrimmsDeath]

What I'm hearing from this and the previous video is this is a decent bike lock either requiring special tools and the skill to use to them r not so covert methods of bypassing it.

[@user-rw3qq2sr1z]

Great job, Counselor !! Maybe a stainless steel screw may have held up a little better. Also, can you post links to where you purchased your tools, picks etc . . .. (if possible) i need a slide/slap hammer. ...thanks again, great video

[@fitter70]

The screw held up just fine. Came out because the roll pin opened up once it was released from the hole.

[@zedorda1337]

I wonder if just running a machine screw through till it bottoms out and see if the threads can pull it out by just continuing to drive the screw against the blind hole end?

[@joegallo8774]

Thank ya again great content

[@cameroncobb2034]

If they would hammer a ball bearing inside that pin, it would stop the slide hammer attack on it. Real easy fix.

[@yessure5291]

So where the roll pin is you need to spot weld it into place.

[@Steelandbrass]

Do you have any videos for spare tire locks? Specially ones that fit on a Jeep Wrangler? If not I think it would be good to see which ones are worthy of getting.

[@sengcau4795]

Great video. But the sad truth is that bike thief learns to how pick locks much more from LPL than I learn how to protect my property from theft. 😭

[@JP-hj7fc]

That clevis pin is an easy drill out, even from either the other side

[@RAkers-tu1ey]

Thanks, You saved me the trouble of buying one of those to test. I thought BB was a bit off on the sliding resistance of that roll pin. I have a bunch of really hard random machine screws obtained from aerospace surplus (when there was such a thing) that I used to use for things like this.

[@ejonesss]

frankly that is a very good lock but could be improved. first they could make the part on the lock thicker and make pin hole all the way through and use short pin (make the pin length 2/3 or 3/4 the depth of the lug) then fill both ends with some filler so a screw cant be placed in the holes. you see that the pin holes and screw holes in some locks are plugged. otherwise the lock is a very good security.

[@harmlymostless6925]

My first thought about defeating your slide hammer would be to place a weld over the hole. bevel the hole and fill it with a nice round blob of weld. Of course, all that would have done would be to move to your next kind of attack.

[@introprospector]

The screw wasn't stripped, the pin expanded and released it's grip on the threads.

[@JohnDoe-fn1me]

Again, great job LPL 👍 One question, I have some padlocks and hasps that I would like to test for steel hardness. Could you recommend any brands of files or testers I could get online (amazon, ebay)? Thanks and keep the awesome videos coming.

[@thomasneal9291]

a bit late... but if you use a large screw with fine thread, you are expanding the pin, making it even harder to remove from the shackle. I would go back to the idea of using a smaller screw with heavier threads that will hopefully bite into the steel a bit more than actually spreading it.

[@chrisgalore745]

Great video... bring on more destruction

[@painmono2478]

Useful tool that slide hammer.

[@BillyHey72]

I'm not sure if it's the same lock, it looks almost identical, but the 8020/8021 only gets a Sold Secure bronze rating in the UK, compared to Gold on the 8019 (with the brute mini U lock). Maybe it's due to this weakness.

[@XtreeM_FaiL]

Those spring pins are also brittle. I'm sure that you can break it with home made retracting tool or just plane old hammer.

[@magiclocks9206]

Bill showed that the chain was well hardened but I wondered about the forked piece that the roll pin is in. Could it be hacksawed?

[@davidgannon5388]

You opened it in 80 seconds! From 3:06 to 4:25!

[@aserta]

I would thread that roll pin. Yes, they are a bit pricey, but i have used taps to take out pins like that. Also use a dead blow hammer and a reverse strike yoke (used to work metal pieces like a wheel arch). In short, little to no noise.

[@Nitrxgen]

dead blow hammer and reverse strike yoke sound like those cheesy fake wrestling moves

[@Sschnayke]

Seems like a small weld at the end of the pin would prevent this correct, so the pin and lock body where one?

[@tuoppi42]

Have you tried if tapping an ice pick or similar thin-ish object next to that roll pin would fold side in? Not applicable with small roll pins, but might(tm) work with big ones like that.

[@anidiotinaracingcar]

Why is the pin hollow? Hom much more secure would the lock be with a solid one (with a rounded end)?

[@randomusernumber1]

as a bike owner i make a habbit of hammering ball bearings into hex head fasteners on my bike so they cannot be used , what if i hammer a ball bearing into the roll pin ?

[@JoebobbedGaming]

great video. another lock defeated :)

[@devengossi2567]

Easily fixed with a simple simple spot weld

[@RPRosen-ki2fk]

I also thought about your approach when BB went through his analysis. You're beginning to make me wonder, if I'm subscribed to a Lock Sport channel, or a mechanical channel like AvE's. Any time you want to give up law, you can come ... work with me!

[@davidgalbraith1840]

LPL knows all about skookum choochers.

[@DUDE72341]

hopefully your getting theses lock manafacturers to step up..If they are charging silly prices for cheap locks thats a crime..I understand a 10.00$ lock keeping the kids out but some of these are almost a days pay and thats a crime in itself!

[@Bigfluffydragongaming]

Open ended nut splitter is the new CBT

[@joelbellJB]

I think all people that work with metal knows that nothing is permanent 😆

[@towtruckaj]

Have you ever seen a lock with a more aggressive safety feature? Like maybe a lock that has a feature where you can go on your phone and turn a stun feature on and off, And when it's on if you touch it, it tased you like a stun gun? It would stop a thief dead in his tracks if he touched it.

[@zenjon7892]

What if you tried a crescent wrench on the chain and a spanner wrench on the U bolt and twisted?

[@dustysparks]

The fastest way to mitigate this attack would be to fill the center of the roll pin with a shot of epoxy, or an even smaller roll pin (would take two attempts like this; more time to open).

[@youtube.commentator]

Love your vids, especially exploits, thanks for the video

[@stevesbuttdocter1173]

Just wondering, would “smoking them open” work on master Locks? (Bosnian bill “scared” them open) It would at least be another original way of opening, like you always seem to invent....

[@mitschcrafter6766]

You know its probably better that i dont know what a nut splitter is.

[@Meekerextreme]

Looks like enough room to hacksaw the pin

[@Wibblywobbly03-o7]

I know your channel name implies that you are a lawyer, but are you/ have you working/worked in an auto shop?

[@TheLandbo]

It is my experience that most external bike, moped or motorcycle locks are opened by people without a key with either bolt cutters or battery angle grinders. Battery angle grinders have become so inexpensive that they are probably taking over the market for thieves' preferred work tools, as it works on all locks and does not fill much as opposed to good bolt cutters.

[@magooracing]

Fill the roll pin with JB Weld

[@ChadHHC86]

Couldn't you grease gun the roll pin out?

[@kellybullock559]

The good thing about these videos is that the lock company's get to see their mistakes an hopefully fix them the bad thing is you show thieves how to open locks that are on the street now. Any bike lock is to keep honest people honest.

[@kellybullock559]

Glad you didn't show the tool that is silent and will fit in your pocket to pull that pin

[@metamorphicorder]

Kelly Bullock the crims dont know this stuff? Even if they didnt, its unlikely they would try this method. Its slow, bulky and loud. They could i guess but its better to know your weaknesses so you can cover them than it is to hope that a bad guy doesnt find them and use them against you.

[@qualifierone8899]

Cot damn it. I’m still looking for a good bicycle lock 🔐

[@the_undead]

The kryptonite forget about It (I have no idea how the name is actually spelled) is probably one of the best bike locks money can buy

[@plutoplatters]

yep... a tiny weld over the pin hole....

[@DRMatt-zd4rh]

could you please try to pick the oxford boss, with the half pipe shaped key, i'd like to know if it's safe for a bike...

[@mrcelada]

2 or 3 minutes, tben is not a weaknesses, is a reasonable time considering proper tool usage

[@DoctorNemmo]

This is my bike lock. I guess I'll fill the sleeve with silicone so nopne can access that pin.

[@tjd2326]

I bet a longer screw would push the pin out by pushing against the steel inside

[@htiguy1]

Very quick!

[@bird718]

interesting attack point, very unique

[@charlesballiet7074]

so to defeat that attack I just have to break off the end of something I can jam into that hole like a nail or a screw

[@meteorytypl]

just put inside pin some resin or hard glue and thats it, anyway if You are good whay not try it from other sides if You alredy destroyed the lock

[@Epikification]

Should this be considered non destructive?

[@lockpickinglawyer]

Probably... never really thought about it.

[@bradslone8511]

I'm looking for a lock to chain my 4 wheeler up and that does not make feel secure.

[@Taco_Syndicate]

Are you going to reassemble it and try the other way? You should be able to drive that pin home easily. I kinda want to see it spread apart now.

[@leerfarmer]

I'll just do the old school attack as it hasn't failed yet. Cut the lock with a road flair.

[@michaelsebourn3425]

so fun to watch

[@richardanderson4796]

All locks keep honest people out, where there's a will there will alway be a way and the angle grinder is KING

[@cup_and_cone]

Looks like the roll pin sits slightly proud, which unfortunately would prevent a simple fix for owners: Using a punch and hammering over the edge opening so the roll pin can't backout.

[@josuelservin2409]

thechosendude, I think that hammering down a small nail down the center would be enough

[@davidnull5590]

Perhaps a tiny dot of weld from a MIG welder? That would rule out this attack and probably would have cost the manufacturer a few pennies.

[@cup_and_cone]

Josuel Servin - Would also work if you find one that fit, then grinded it flush so it can't be grabbed.

[@cup_and_cone]

David Null - It looks like the reason they used a roll pin in the first place is the assembly line order, otherwise they would have riveted the chain or done some other better retention method if they could do it earlier in the assembly process.