jetski's toolbox - today: individually coded anti theft wheel nuts

Dear ladies and gentlemen,

here's a design for an individually coded (>100.000 combinations) M9 anti theft 3-pin nut/tool set for track wheels, especially the front wheel as it would allow to carry only one lock. Tool and nuts would be quite easy to be manufactured on a lathe, no CNC needed.

The diameter of the nut would be 26mm, quite much, but still less than the Pitlock nuts that only exist for M10 anyway. The benefit is the 37° conical outer shape to prevent it from vise grip attacks.

Please let me know if something like this (with individually coded nuts and tools) already exists(??), and what you think of the design.

jetski

http://www.lfgss.com/picture.php?albumid=1582&pictureid=9116

Interesting. Any idea how one would work out exactly many combinations are there? Obviously there would be duplication, for example your example 0,98,-133 would be the same as 0,227,325

No clue, but it's definitely enough ;-)

I'd lose the tool.

I could make you a new one if you do not lose your memory as well and remember the code

It would confuse the hell out of Catfood. he has problems enough borrowing shit from people.. ;-)

Balks... i'm feeling nice today so will let the obvious retort to your comment slide.

Dear ladies and gentlemen,

here's a design for an individually coded (>100.000 combinations) M9 anti theft 3-pin nut/tool set for track wheels, especially the front wheel as it would allow to carry only one lock. Tool and nuts would be quite easy to be manufactured on a lathe, no CNC needed.

The diameter of the nut would be 26mm, quite much, but still less than the Pitlock nuts that only exist for M10 anyway. The benefit is the 37° conical outer shape to prevent it from vise grip attacks.

Please let me know if something like this (with individually coded nuts and tools) already exists(??), and what you think of the design.

jetski

http://www.lfgss.com/picture.php?albumid=1582&pictureid=9116

Would this not be the same as a pinhead design?
http://www.pinheadcomponents.com/
I'm not sure if they have a patent

Yeah I do have some pinhead skewers on my gf's bike, they are similar but I don't like them because they are overly complex without necessity, do not come in M9 and are not stainless steel. And the torque engagement is shite.

I wonder if my design would get in conflict with their patent(s).

Looks great. 5 quid? :)

Yeah I do have some pinhead skewers on my gf's bike, they are similar but I don't like them because they are overly complex without necessity, do not come in M9 and are not stainless steel. And the torque engagement is shite.

I wonder if my design would get in conflict with their patent(s).

I did not read but this was on goggle search
http://www.google.com/patents?id=jXsZAAAAEBAJ&zoom=4&pg=PA1#v=onepage&q&f=false

I would imagine one pin and a good fit over the axle would make a universal tool that would crack any one. I guess testing is in order, but that's what jumps out at me as an achilles heel - I imagine the pinhead is designed to have just enough torque to move the nut with all three engaged.

This thread reminds me to get some pitlocks. Sorry.

I would imagine one pin and a good fit over the axle would make a universal tool that would crack any one. I guess testing is in order, but that's what jumps out at me as an achilles heel - I imagine the pinhead is designed to have just enough torque to move the nut with all three engaged.

Ok, right. So, either there is no axle sticking out = a "flat" look, or the pin holes are more shallow, but I think the flat version would be alright?
Any other achilles heels in that version coming to your mind?

jetski

pin spanner/ decent circlip pliers would have it away wouldn't it? good idea though, seen similar for locking electrical access panels etc

This seems to be a minor improvement on your design as far as resistance to common tool attacks go, and could be made with your multiple key differs option.

These are even better as far as attack resistant features go, and come in cycle sizes, both M9/M10 and 3/8"x26. I think their standard product comes in a single coding, although the design allows for key differs for higher security applications.

These are even better as far as attack resistant features go, and come in cycle sizes, both M9/M10 and 3/8"x26. I think their standard product comes in a single coding, although the design allows for key differs for higher security applications.

I ordered those a while ago and I have them here in front of me, they are ok, but as you said, it's a single coding. The design is very complex and it isn't easy to alter it to individual codes (but it might be possible).

I found another solution which I am happy with: I have a left over pinhead nut from those pinhead skewers, and I will simply drill it a bit larger and cut a M9 thread in there. The pinhead nuts are just large enough to be expanded to M9 without touching the indents where the pinhead individual key engages.

Hi guys, im new here but theres a policy of not starting threads until i have been here 24hrs and i really cant wait that long. I was hoping someone could look at the pictures i have posted and tell me how to remove the fork. Everything else is out, the wedge and the handlebars and the wheel is only on loose. If someone could help I would be eternally grateful.. Thanks

http://yfrog.com/4z94259261j

Unscrew the upper headset cup and it will drop right out. Also use google before asking such simple questions, since there are about a million online bike maintenance resources, and only then use the "Any Question Answered" thread if UTFS here doesn't turn up a more relevant thread.

cheers fella, im closer to converting to a fixie!