Drilling bolts for safety wire - Chicagoland Sportbikes
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post #1 of 22 (permalink) Old 03-27-2006, 10:42 AM Thread Starter
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Drilling bolts for safety wire

How the heck do you do it? I tried drilling through one of my brake caliper bolts and after 20 minutes I don't even think I got half a milimeter into it, it's barely just even dimpled... Is it just a matter of switching to a cobalt or titanium drill bit to get a hole in those fuckers without taking 2 hours per bolt?

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post #2 of 22 (permalink) Old 03-27-2006, 10:42 AM
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use a press, its easy even with old bits.

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post #3 of 22 (permalink) Old 03-27-2006, 10:43 AM
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Quote:
Originally Posted by Vcook
use a press, its easy even with old bits.
+1

also squirt some lubricant (wd-40) or what not at the same time to help. I like to use cutting oil.

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post #4 of 22 (permalink) Old 03-27-2006, 10:51 AM
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hahaha, make sure you let us know how many bits you go through!

-lube it, I usually just use some motor oil, dip the bit on occasion
-slow RPM, this is the weird one, you generally think that since it's hard you need high RPM-not the case; infact high RPM will make it harder(I don't know why). Drill slower with even pressure and it will start to cut, re-lube the bit and go back to the even pressure and slow RPM.
-Though a drill press it ideal, if you don't have one you can get by easily with a pair of vicegrips to hold the bolt(completely removed from the bike of course) in place.

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post #5 of 22 (permalink) Old 03-27-2006, 11:11 AM Thread Starter
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Arrr stupid bolts being so hard, so much easier to drill through clip ons tubes

I'm gonna try a bit more with more lube and the hand drill with some more and newer bits until I get too frustrated and end up buying a drill press... hopefully it doesn't come to that. I only have a few bolts to drill and I can't think of any other reason why I'd own a drill press other than for a few bolts. Thanks for the ideas

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post #6 of 22 (permalink) Old 03-27-2006, 11:15 AM
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i wish i had room for a decent drill press. I'm always going over to my dad's house to use his, you'd be surprised how much use you get out of one.

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post #7 of 22 (permalink) Old 03-27-2006, 11:17 AM
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If you don't have a press use a vice to hold the bolt. Use a center punch to mark the place you want to drill. It'll make your life alot easier. Use cobalt drill bits. Like everyone said.. easy steady pressure. If you force it, you'll break it and the bit will get stuck in the bolt and make for a real pleasant day. Now try drilling titanium bolts!
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post #8 of 22 (permalink) Old 03-27-2006, 11:34 AM
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You can use my press here at the house if you like, drop me a PM.

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post #9 of 22 (permalink) Old 03-27-2006, 11:49 AM
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Tom lives pretty close to you Jon...

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post #10 of 22 (permalink) Old 03-27-2006, 07:10 PM
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Like everyone said above. I only have to drill my oil pan bolt and I'm done.

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post #11 of 22 (permalink) Old 03-27-2006, 09:11 PM Thread Starter
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The bit breakage count is up to 4 right now, 3 cheap ones and one cobalt one... but using new bits did make the job a lot easier, I got the radiator cap and the 4 caliper bolts drilled so far, except the caliper bolt holes don't line up that well to thread the wire through both sides. Titanium bits are the shit and I feel like a man right now

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post #12 of 22 (permalink) Old 03-27-2006, 09:35 PM
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I have a special jig to hold the bit as it penetrates the bolt head. It looks something like the following:

http://www.pegasusautoracing.com/Pro...asp?RecId=1192

Also have a nut jig:

http://shop.store.yahoo.com/pitposse/nutdrilljig.html

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post #13 of 22 (permalink) Old 03-28-2006, 06:48 AM
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For future reference......

For Brake Caliper bolts or Axle pinch bolts......

Loosen the fasteners, torque them properly, decide where you want the wire to run, mark with click punch on appropriate face of fastener, remove them one at a time to drill ... or label as you remove, drill, install, torque, wire.

Cool.....


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post #14 of 22 (permalink) Old 03-28-2006, 07:18 AM
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Quote:
Originally Posted by Vcook
i wish i had room for a decent drill press. I'm always going over to my dad's house to use his, you'd be surprised how much use you get out of one.

Quote:
Originally Posted by Reverend Rice
If you don't have a press use a vice to hold the bolt. Use a center punch to mark the place you want to drill. It'll make your life alot easier. Use cobalt drill bits. Like everyone said.. easy steady pressure. If you force it, you'll break it and the bit will get stuck in the bolt and make for a real pleasant day. Now try drilling titanium bolts!

+1 for both

carbide drill bits work real good too. And don't drill the bolts dry. Put a finger tip full of motor oil where you're gonna drill. I think someone else mentioned that too

Eric
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post #15 of 22 (permalink) Old 03-28-2006, 09:58 AM Thread Starter
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Screw it, I'm just going to get a drill press today. It's only $99 for a small one and at the rate I'm breaking bits right now, it'll be an investment that pays for itself

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post #16 of 22 (permalink) Old 03-28-2006, 08:22 PM Thread Starter
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I don't freaking get it... I destroyed a total of like 6 or 7 drill bits, 3 of them cobalt ones on one freaking bolt, the front axel pinch bolt. I don't know why, but every time I took the bit to it, it would dull out the bit right away. I got one hole through fine with no problems, but after that, when I tried to do the hole on the other side, it just ate my bits.

I finally got pissed off and decided to start over on it with a different side of the hex. So I drilled through the 2 other sides and it worked fine. WTF is up with that?? How can one side of it be so hard that it destroys all my bits but I can get the rest of it?

Oh yeah, I picked up a small drill press at menards today for like $59. Made the job a lot easier

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post #17 of 22 (permalink) Old 03-28-2006, 08:29 PM
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Are you drilling through the entire bolt? Try just nipping a corner or going at an angle. Saves a lot of time and bits.

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post #18 of 22 (permalink) Old 04-13-2006, 03:52 PM Thread Starter
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Well this sucks, I just found out that I can buy 10 packs of 1/16" titanium drill bits at Harbor Freight for $2, whereas I've been buying them for $3 for 2 at Home Depot... coulda saved up enough money for a couple of lunches if I knew that... doh

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post #19 of 22 (permalink) Old 04-13-2006, 04:03 PM
 
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Quote:
Originally Posted by JonGu
Well this sucks, I just found out that I can buy 10 packs of 1/16" titanium drill bits at Harbor Freight for $2, whereas I've been buying them for $3 for 2 at Home Depot... coulda saved up enough money for a couple of lunches if I knew that... doh
menards had 2 packs of 1/16th bits for $1 and R clips (safety clips) for $.79.
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post #20 of 22 (permalink) Old 04-13-2006, 11:11 PM
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Jon,

I bought the jig that SloRoll was talking about and I also got Carbon bits which I was told will do better on the bolts than titanium. I'll bring this stuff to RA if you want.

By the way, you can also buy pre-drilled bolts on some bikes.

Brian

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post #21 of 22 (permalink) Old 04-14-2006, 01:08 AM Thread Starter
I break everything!
 
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Nah thanks though, I got most of mine drilled already. I figured it out by about the 7th or 8th bit

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post #22 of 22 (permalink) Old 04-14-2006, 07:11 AM
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Alright, see ya tonight at Grattan.

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