Modern Vespa

I'm drilling out the old steering column lock on my 1980 P200 but I don't know how deep I have to drill or how big a hole I have to drill. I've watched this video but it doesn't answer those questions. Any thoughts?

Pins stop at the red line but you'll feel it too. When you'll hit the hardened part of the lock the drill will "stop". Just drill at the center for the pins to fall out. Next, take a flat head screwdriver, wedge it in and turn anti-clockwise...

I think it's 4 pins. you reach them and the springs get caught in the drill. after #4 you can turn it with a flathead screwdriver.

How screwed am I. I see now that I got off center when I started drilling. What should I do now?

You used a bit bigger drill bit than needed, but should be fine.

Did the tumblers fall out from the top?

Now just turn it with a screwdriver the way the key turns it and that's it!

If you have to get a grinding bit and work your way up, Do you have a rotary tool? I use these for porting.


https://www.northerntool.com/shop/tools/product_200637645_200637645

The pins are in the square part at the top.

they're held in with springs, so they should all just fall out as the drill reaches them. They prevent the cylinder from turning, so once they're gone, it should be able to turn.

Hard to tell, but it looks like you probably got them.

If not, try a smaller drill bit in the area toward the top to get this area. (second photo here).

No Hjo, the tumbles have not fallen out and I can't even feel them with a lock pick. Is that what I'm looking for... the tumblers falling out so I can turn the cylinder?


Yes Christopher, I do have a grinding tool (somewhere) and I'll try working my up with it. Same question as I asked Hjo... am I looking to release the tumblers so that the cylinder will turn?

Ah. I edited the last note.

Yep. The drill just destroys the channels where the pins are, and it will grind them up. Since they're held in with springs, you can tell when you get them, bc the springs get caught up in the drill bit.

probably just need to do a second drill (smaller gauge) a bit higher. that will make it easier to turn, too.

Try looking up rekeying a lock a visual should help attached a link below. There are pins in the way that are a puzzle to keep the cylinder from turning. Normally a key is used to solve the puzzle and allow the cylinder to turn. In this case the puzzle key is lost and you are brute forcing it. Once you get it drilled out or ground out and each pin falls out the spring pushing each pin should fall out. Once you get them all out the cylinder should turn.

The only reason I know how they work is I had three separate locks in my house when I moved in none were keyed the same but all in good shape. I looked up articles like the one below, bought new pins and a new key. Rekeyed all three locks to be the same. One was even a different brand but used the same basic blank.


https://www.familyhandyman.com/project/how-to-rekey-a-door-lock/

Damn, it just keeps getting better and better!

I started drilling a second hole and got this far and the bit snapped off inside. I don't know if I'll be able to get it out with an EZ-out so I'm going to go at it from below with a dremmel and hopefully reach the pins that way. Damn!

Thanks for the piece on the pins. That helps explain what I"m looking for.

Grind up from the bottom that bit will eventually fall out.

GOTCHA YA BASTARD!

I used the Dremel from below and was able to dislodge the broken drill bit and then I continued removing material until I could get a screwdriver in and twist the barrel. I got it about half way and then with a final push, got it the rest of the way and out it popped! Damn, that was a lot more work than it should have been.

Now, I understand that the new lock will just pop right in and I'll be good to go... (although I've heard that one before)

Thanks for all you help guys.

Fatbear aka Luckybear

Wouldn't want it to be to easy to steal.

Victory!!

Hi All,

Whats the procedure for getting the lock out if you have the key? obviously the barrel turns and pushes in to lock the fork, but what do i need to do to get the entire lock out.

If you pry out the two rivets and remove the cap, you can use the key to turn the lock counterclockwise and the whole thing should pop out.

Ok, thanks. That doesn't sound too bad then.

Thanks

All sorted.

Obviously i should have paid attention to 'pry out the rivets'. Instead, i ground most of the heads off and then pried the lock cover. it came straight of with the rivets. So basically i wasted 20 mins grinding when i didn't need to.

After that, as you say, so easy to do. Old lock straight out, a clean up and a bit of grease and then new lock went straight in.