X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wx-out-0506.google.com ([66.249.82.227] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTP id 2279274 for flyrotary@lancaironline.net; Wed, 22 Aug 2007 20:30:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.249.82.227; envelope-from=rotary.thjakits@gmail.com Received: by wx-out-0506.google.com with SMTP id i27so289708wxd for ; Wed, 22 Aug 2007 17:30:15 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=c/zN5c8EPUbxgnqMW0GXtdJx8CrBpWYDe9OrGiJHi8lrodSt1Xavfrv6LvNkbHiCWAYQ8BlZfVk5A60tcORGgi/XRV16rfmXF2xXFybpJOaacN/fRgWrp0KskOzLaYMN4a96NhPBOqC/naPxH6Mnw4Hx6K0k0cy5sIyxVgazwxk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=tq/V1pDxfuvIH4Dkkx+QpzGRNjTPZZ4ly3hqskv06RkPLFVKgEqGefOmWu11D7zfZcwkf8grpYQhtPIXoxyhKAQ/4Yu4PyU0oPOPgb3o1v7pJOKw6ByUlSndM+AfI75VvRyfpPaWoEfcEOl9KB9eZhp+mJqLWKHjXU6/1zgHnvE= Received: by 10.70.47.19 with SMTP id u19mr1999117wxu.1187829014464; Wed, 22 Aug 2007 17:30:14 -0700 (PDT) Received: by 10.100.197.17 with HTTP; Wed, 22 Aug 2007 17:30:14 -0700 (PDT) Message-ID: <63163d560708221730s6c2b4ca2ue5aa021e9a5b8fa9@mail.gmail.com> Date: Wed, 22 Aug 2007 19:30:14 -0500 From: "Thomas Jakits" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Tap 'em holes was [FlyRotary] Throttle Body Nut Ideas In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_11290_28712223.1187829014434" References: ------=_Part_11290_28712223.1187829014434 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline And the lord said: "Weld the damn thing on!!" If you want to be flexible for later trials, weld a flange to the plenum. You bolt an adapterplate to the flange and bolt the throttlebody to the adapter with sunken boltheads. O-ring groove in the adapter will seal fine. When settled on a final config. scrap it all and weld the d**n thing on.... Thomas :) On 8/22/07, Dale Rogers wrote: > > wrjjrs@aol.com wrote: > > Dale, > We have been using these taps for years. > > > Bill, > > I've been using them for more than 20 years, myself. I needed smooth > strong threads in a rear sight I was making for a mini-14 rifle. Since > then > I've been using them on nearly all aluminum parts I make for aviation use. > As soon as my new "tap" comes in, I'll be doing them even for the NPT > threads in my oil filter adapters. > > You should check in Machinerys Handbook or with the manufacturer for the > tap drill size. I always ask for a tap with a air/lube relief groove. Hand > tapping can be tough with the roll tap as these are called. > Bill Jepson > > > > > For those without a copy of Machinerys Handbook, a quick rule-of- > thumb that works is to drill the hole halfway between the size needed > for a conventional tap and the size of the thread. For example, for a > 1/4"-28 thread, I use a #A drill, rather than the #3 recommended for > a cutting tap. > > Best Regards, > Dale R. > COZY MkIV #1254 > > > -- > > Homepage: http://www.flyrotary.com/ > > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html > > ------=_Part_11290_28712223.1187829014434 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline
And the lord said:
 
"Weld the damn thing on!!"
 
If you want to be flexible for later trials, weld a flange to the plenum.
You bolt an adapterplate to the flange and bolt the throttlebody to the adapter with sunken boltheads.
O-ring groove in the adapter will seal fine.
 
When settled on a final config. scrap it all and weld the d**n thing on....
 
Thomas :)


 
On 8/22/07, Dale Rogers <dale.r@cox.net> wrote:
wrjjrs@aol.com wrote:
Dale,
We have been using these taps for years.

Bill,

   I've been using them for more than 20 years, myself.  I needed smooth
strong threads in a rear sight I was making for a mini-14 rifle.  Since then
I've been using them on nearly all aluminum parts I make for aviation use.
As soon as my new "tap" comes in, I'll be doing them even for the NPT
threads in my oil filter adapters.

You should check in Machinerys Handbook or with the manufacturer for the tap drill size. I always ask for a tap with a air/lube relief groove. Hand tapping can be tough with the roll tap as these are called.
Bill Jepson 

 

For those without a copy of Machinerys Handbook, a quick rule-of-
thumb that works is to drill the hole halfway between the size needed
for a conventional tap and the size of the thread.  For example, for a
1/4"-28 thread, I use a #A drill, rather than the #3 recommended for
a cutting tap.

Best Regards,
Dale R.
COZY MkIV #1254


--

Homepage:  http://www.flyrotary.com/

Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html


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