Author Topic: Disc locks  (Read 351 times)

0 Members and 1 Guest are viewing this topic.

Offline Tim2005

  • Expert
  • ****
  • Posts: 900
Disc locks
« on: October 09, 2018, 11:53:39 am »
Is anyone using a disc lock on an undrilled disc? I recollect when this topic came up a coupe of years ago people were struggling to find one that will fit over the sohc discs successfully- has anyone found anything yet?

Yes I do have shackle & chain locks, but sometimes a disc lock would be much more convenient to carry.

Online Bankerdanny

  • Eventually I will be old enough in reality to be
  • Really Old Timer ...
  • *******
  • Posts: 5,867
  • Endeavor to persevere
Re: Disc locks
« Reply #1 on: October 09, 2018, 12:49:57 pm »
I suppose you could just drill one hole for the lock.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F, '74 CB550k project bike, '77 CB550F basket case engine donor. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki 80 (K11 probably, it's been 30 years), '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline spotty

  • Hot Shot
  • ***
  • Posts: 553
  • cb750....for when a Vmax is just too much bike
    • spottys world of vmaxes and great danes
Re: Disc locks
« Reply #2 on: October 09, 2018, 01:56:16 pm »
use a padlock through the holes in the centre part, it should bang up against something and prevent it being wheeled away

don't forget to take it off before you ride away, you will come to a very sudden halt shortly followed by a very sudden fall over. theres a reason people use those stretchy cable things from the lock to the handlebars

i had a serious cable through the front wheel of my GS750 years ago and i forgot it was there, took off and snapped four spokes before we shuddered to a halt, luckily didn't fall over
and here was me thinking I'd kicked the honda habit........silly me

Offline Bodi

  • Old Timer
  • ******
  • Posts: 4,648
Re: Disc locks
« Reply #3 on: October 09, 2018, 08:15:42 pm »
There are disc locks that don't go through holes, but I haven't been able to find dimensions to say if one will fit over the disc. This Kryptonite https://www.kryptonitelock.com/content/kryt-us-2/en/products/product-information/current-key/003243.html?type=motorcycle is one type, others have a long body with a pin closure... Those are rather easy to defeat using a big easy-out, though: you screw it into the slot and the thing breaks in two. The cheapo zinc body ones can be melted off in a couple of minutes with a MAP torch.
Our bikes are, luckily, pretty low on the desirability list for bike thieves. You need a different (lower) level of security than for an R1 or a Road King.
I worry more about cars driving into my bike - or having a hard to replace side panel or other easy to remove part stolen - than about losing the whole bike.
Regardless of your bike model, if a professional bike thief wants it... it will be gone.

Offline evinrude7

  • just cause i post a lot doesn't mean i'm an
  • Expert
  • ****
  • Posts: 1,498
  • something to husker
Re: Disc locks
« Reply #4 on: October 10, 2018, 06:56:33 pm »
use a padlock through the holes in the centre part, it should bang up against something and prevent it being wheeled away

don't forget to take it off before you ride away, you will come to a very sudden halt shortly followed by a very sudden fall over. theres a reason people use those stretchy cable things from the lock to the handlebars

i had a serious cable through the front wheel of my GS750 years ago and i forgot it was there, took off and snapped four spokes before we shuddered to a halt, luckily didn't fall over

when i park my bike out in the carport i put one of those old school U shaped kryptonite locks thru the spokes and struts of the front fender.  i've tried to pull away numerous times with it still on the front wheel.  fukin' bent the fender struts so many times i can't even bend them back perfectly straight anymore. 
cb750 k6 - ugly

Offline 70CB750

  • Labor omnia vincit improbus.
  • Really Old Timer ...
  • *******
  • Posts: 12,198
  • Northern Virginia
Re: Disc locks
« Reply #5 on: October 11, 2018, 01:40:39 am »
I snap a padlock over drive chain.  Safe enough.

Offline slikwilli420

  • Master of Disaster
  • Master
  • *****
  • Posts: 1,868
Re: Disc locks
« Reply #6 on: October 11, 2018, 07:18:18 am »
I snap a padlock over drive chain.  Safe enough.

Until someone zip ties it out of the way and rides your bike away. Best bet for bike safety is visibility. If people can see someone picking the lock, its less likely to be picked. Check out the lock picking lawyer on YouTube and you can see that pretty much everything can be picked in about the time it takes you to use a key.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline 70CB750

  • Labor omnia vincit improbus.
  • Really Old Timer ...
  • *******
  • Posts: 12,198
  • Northern Virginia
Re: Disc locks
« Reply #7 on: October 11, 2018, 07:50:34 am »
I wonder how you zip tie out of the way a padlock hanging on the drive chain in front of the rear sprocket?  ;D

By chain here I mean 530 o-ring, just to make myself clear.

Offline Bodi

  • Old Timer
  • ******
  • Posts: 4,648
Re: Disc locks
« Reply #8 on: October 11, 2018, 08:02:19 am »
I think the lock goes around the chain and sprocket outer ring, not going to work on a solid sprocket. Just on the chain it would do pretty much nothing, just tie it to something and it will rattle and grind but not slow you down.

Offline slikwilli420

  • Master of Disaster
  • Master
  • *****
  • Posts: 1,868
Re: Disc locks
« Reply #9 on: October 11, 2018, 08:06:58 am »
I think the lock goes around the chain and sprocket outer ring, not going to work on a solid sprocket. Just on the chain it would do pretty much nothing, just tie it to something and it will rattle and grind but not slow you down.

Bodi's got the idea. If just on the chain, very easy to get around. If around the sprocket and chain, much more difficult. Even that said, its not very difficult to learn how to pick nearly any lock out there.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 19,122
  • I refuse...
Re: Disc locks
« Reply #10 on: October 11, 2018, 08:13:00 am »
If someone wants your bike, they will get it. Regardless of the deterrents used. Locks and chains help with mischievous runts, but serious folks are equipped to defeat all methods. Even so far as to hoist the thing and carry it away if need be.

(Prokop, if I were determined to get your bike, I’d cut the chain, drop the lock, and then install a new master link. Off I go  8) Of course, tying off the padlock with 2 zip ties works also.)
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

*** Currently experiencing life at 60 WTFs per hour ***
I always thought getting old would take longer

Offline millla03

  • Enthusiast
  • **
  • Posts: 100
Re: Disc locks
« Reply #11 on: October 11, 2018, 09:33:08 am »
I use a motion alarm style disc lock through the spokes along with a cable lock through front wheel and frame. Not much to carry. Cant roll far that way and makes an awful racket when moved. Better than nothing when youre staying at a hotel.
Luke

72 Honda CB750 K2

Offline DaveBarbier

  • Old Timer
  • ******
  • Posts: 4,473
Re: Disc locks
« Reply #12 on: October 12, 2018, 04:54:36 am »
Of course if someone really wants your bike they’ll get it. That’s not what the disc locks or steering locks are for. A professional bike thief with a goal of your bike is rare case. 99% of the time it’s the jerk that wants a free bike he can ride and ditch or chop up and sell if he likes the rims or tank or something. The deterrent type locks are what helps prevent that. You want something very visible so they don’t attempt to ride it and trash your bike. That’s why these locks are brightly colored.

The pad lock on the sprocket and chain will just ruin your bike as the guy tries to ride away and dump your bike because he didn’t notice the lock.

Offline 70CB750

  • Labor omnia vincit improbus.
  • Really Old Timer ...
  • *******
  • Posts: 12,198
  • Northern Virginia
Re: Disc locks
« Reply #13 on: October 12, 2018, 04:59:56 am »
If the lock is snug like this, there is no use trying to zip tie it out. 

The padlock does not take much space to carry in your kit,  but if somebody tries to get the bike, the bike will end up on the ground most likely.  Lock with higher visibility is better in deterring people, but is a pain to pack.

Still, as Cal says, if there is a determination, the bike is gone.

In Czech guys cement anchors in the garage floors and lock bikes to it and still bikes disappear - the russsian and ukraine markets are hungry  >:(

Online jgger

  • Hot Shot
  • ***
  • Posts: 705
Re: Disc locks
« Reply #14 on: October 12, 2018, 05:24:47 am »
I used to put a Cresent wrench through the holes in the rear sprocket on my dirt bike, then use a padlock through the hole in the handle. That might work on the disc in the center.

Might look at what ic available in gun locks also.

 

;