DIZZY
Sr. Member
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Ride it like you want it
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« on: May 06, 2011, 07:37:23 PM » |
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How do you know what size drill bit to use for the tap size or bolt size you want to use? and does the rule apply to metric and imperial a like?
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Dizzy
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voodoo
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« Reply #1 on: May 06, 2011, 07:39:07 PM » |
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Ive got a Helicoil guide and a Tap & die guide that tell me what size goes with what,I will dig it out tomorrow...Voodoo....
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Custom Paint Spraying...
English by Birth..Biker by choice....
Growing old is inevitable...Growing up is optional....
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DIZZY
Sr. Member
Karma: 6
Posts: 295
Ride it like you want it
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« Reply #2 on: May 06, 2011, 07:42:25 PM » |
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Cheers Voodoo  |
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Dizzy
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snafu
Full Member
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« Reply #3 on: May 06, 2011, 07:55:47 PM » |
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hornet6
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« Reply #4 on: May 06, 2011, 08:29:05 PM » |
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Drill 5mm for a 6mm tap
Drill 6.5mm for a 8mm tap
Drill 8.5mm for a 10mm tap
Drill 10.5mm for a 12mm tap
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no projects ever finished
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Tony oily bike
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« Reply #5 on: May 06, 2011, 08:51:49 PM » |
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There's nowt as light as a hole, so add lightness.
Our lady of blessed acceleration, don't fail me now! - Elwood Blues
Nitro doesn't add power, it multiplies it! Bob Loux, running 10.07 secs @138mph on a 650 normally aspirated Triumph drag bike in 1965!
"Incontinence Hotline" - please hold.
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spanners
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« Reply #6 on: May 06, 2011, 08:57:29 PM » |
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LIVE FAST and DIE YOUNG,, past 50 AND STILL HERE NOW. WAITING. FOR. THE. GRIM. REAPER
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morrag
Hero Member
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Posts: 2875
Carpe diem!
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« Reply #7 on: May 06, 2011, 10:06:39 PM » |
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I generally use a Zeus book, but a "cheerful" method,which is usually accurate enough for most applications, is to choose a twist drill that just passes through the nut of the size to be tapped! a simple method shown to me as an apprentice over 50 years ago, and handy when on site and miles fr om the workshop and reference books!! Morrag
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Beware the Ides of March, But!
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DIZZY
Sr. Member
Karma: 6
Posts: 295
Ride it like you want it
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« Reply #8 on: May 07, 2011, 07:04:23 AM » |
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Thats a handy tip Morrag, i will remember that thanks.
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Dizzy
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DIZZY
Sr. Member
Karma: 6
Posts: 295
Ride it like you want it
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« Reply #9 on: May 07, 2011, 07:15:08 AM » |
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Just had a look at the charts oily bike has put on here and i think they could be a big help to every one.Could someone put them on our Trike Bike and car help section "Motors". I aint very good on the computer and dont know how to do it.  |
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Dizzy
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voodoo
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« Reply #10 on: May 07, 2011, 08:08:17 AM » |
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That saves me scanning my charts then lol...Voodoo.....
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Custom Paint Spraying...
English by Birth..Biker by choice....
Growing old is inevitable...Growing up is optional....
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DIZZY
Sr. Member
Karma: 6
Posts: 295
Ride it like you want it
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« Reply #11 on: May 07, 2011, 08:25:50 AM » |
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yeah cheers though voodoo,this might help others too |
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Dizzy
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voodoo
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« Reply #12 on: May 07, 2011, 08:33:21 AM » |
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Best thing I ever spent out on is a quality Tap & die set and a full Heli-coil set...they aint cheap but I would never be without a set now...Voodoo...
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Custom Paint Spraying...
English by Birth..Biker by choice....
Growing old is inevitable...Growing up is optional....
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triker_Chewie
Hero Member
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Posts: 1712
west aussie dreamer
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« Reply #13 on: May 07, 2011, 09:16:01 AM » |
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The tap gives you the info. A normal 6mm thread has a 1mm pitch so it needs a hole 1mm smaller.
A 12mm thread has a 1.25mm pitch
The pitch is marked on the tap
Fine threads and wierd thread sizes have different holes need
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I hate when people compare Lemmy with God, i know he is great but he is not gonna be Lemmy, ever If your Dad hasnt got a beard, you've got two Mums there's no point it lookin' pretty if we can't drive it.
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Cabman77
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« Reply #14 on: May 07, 2011, 02:58:06 PM » |
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Never a truer word has been spoken, it truly is the engineers bible, not just for drilling and tapping but all sorts of formulae, tolerances etc etc. |
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..........and Joshua entered Jericho on his Triumph..............
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