Drilling / Filing disk to take lock

[Marmalade]

I know I shouldn't but,,,,

I've just got an oxford disk lock alarm but it won't fit through the disk

So, could i drill out one of the holes as shown to make it big enough to fit, maybe do it to opposing sides of the disk to counteract any unlikely (my opinion) imbalance issues

https://i370.photobucket.com/albums/oo141/bramble43/disk1.jpg
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Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[0ddball]

Will it not fit on the rear disc?
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ZXR750L

[Marmalade]

Think it's about the same but then i have to take panniers off to get to it and alarm would be screaming by the time i get to it to unlock
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Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[jimspeed]

how much would you need to file it by? as long as your not going to be taking over half the material away it "should" be fine but wouldn't it be a pain to only have one place it fits on the the disk,
balancing would hardly be effected as its close in to the centre anyway.
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Hyosung cruise 125(passed test on, sold) Kawasaki el 252 (better than expected but sold on) Kawasaki GPZ500S first "big"bike.(sold) ZZR600 E5..Z750 2007,ER5, currently on a 2008 Enfield bullet electra x and loving it..
,"Alpha-9: Is there any correlation between dyno rod and dyno kits?"

[Wafer_Thin_Ham]

Wouldn't fancy it myself.
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[J4mes]

I'd take the lock to a machine shop and have them mill a few mm off the bolt instead. Ok, it won't be as "secure" as before, but a thief still won't be able to get anything down there to cut it off really.

[Nexus Icon]

[cb1rocket]

You would just weaken the brake disc, and the chances of it failing are small but I still woudn't, its there to save your life.

Better option: get another lock

[Vincent]

[DrDonnyBrago]

I stick my lock through one of the holes in the rear sprocket.


As for filing it, I wouldn't want to chance it but it would probably be ok.

[sickpup]

If that's the lock with only a pin it can be removed in seconds.

[stonesie]

I think it would be fine, then again I would not do it to my own brakes, nither would I do it to anyone elses... Too much of a 'What if?' factor for something as safety critical as the brakes.

[Marmalade]

That lock on there is rubbish. The one intended is oxford boss alarm lock which are meant to be quite reasonable.

It's not a lot to come off, maybe 3 mm.

I'l have a proper look tomorrow
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Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[jimspeed]

if its only 3mm I would take some from both sides of the hole and not worry too much personally
I wouldn't take it all from one spoke tho
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Hyosung cruise 125(passed test on, sold) Kawasaki el 252 (better than expected but sold on) Kawasaki GPZ500S first "big"bike.(sold) ZZR600 E5..Z750 2007,ER5, currently on a 2008 Enfield bullet electra x and loving it..
,"Alpha-9: Is there any correlation between dyno rod and dyno kits?"

[Marmalade]

I'm quite happy with doing it but thought i'd ask to see if any of the couple of bcf members had tried anything similar and had it go tits up for some strange reason.
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Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[Rogerborg]

Oooh, I'd hesitate to risk a good disc for a cheap lock.

I had the same problem on my GPZ, but eventually figured out that I could fit the lock over the belt drive.
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Robby]

GPz305? I'd cut the belt to steal the valuable lock, but I wouldn't even touch the bike. Might catch something, spend the rest of my short life feeling my head go soft and wear away while my spine rattles.

As for the OP, send the lock back and get one that fits. Its only a deterrent anyway, any bike thief that really wants to steal it will have it picked up and loaded into the back of a soundproof van in 15 seconds.

[Fairies attack]

Not sure if it has already been said but:

If you drill on hole bigger, find the exact oppersite and drill it to the same size. It should keep the wheel balanced, since it has worked on all the bikes I have owned.

[CaNsA]

Marmalade, dude, i never expected you to ask this sorta question.

Anyways, you will prolly need to replace the powerband. I would suggest getting a yellow one to improve the braking on the disc that hasnt been drilled.

[DrDonnyBrago]

[Marmalade]

[CaNsA]

I really wouldnt if it was me.

I cant stop thinking about the stress point and how the force will be no longer be spread out equally under heavy breaking.

You catch my drift?

[nowhere.elysium]

Personally, and I'm not talking from experience here, just a stance of paranoia, 'd be concerned about small stress fractures forming after you'd drilled the disc and been using it for a bit: it's unbalanced at that point, and won't pass the stresses through the metal in the same way.
If you bought the lock, then try to return t for one that fits. If it was a gift, then hold on to it for any other bikes you may use, and get a different one.
Having a disc fail is potentially much more expensive than any disc lock.
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'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project

[Marmalade]

Careful guys, you've almost talked me out of it
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Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[calyx]

MOT manual:

A. Mechanical Brake Components

1. Examine all the mechanical components of the brakes which can be seen without dismantling, looking particularly for:

Reason for rejection;

1. Serious reduction in strength of any component due to excessive wear, cracking or damage (eg a brake rod reduced in diameter by more than I/3rd of original dimension)

g. An insecure or cracked brake drum or disc or securing bolts loose or missing
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Boris - London