[NSRCA-discussion] Engine problem

[Ken Velez]

I believe the tap is 1/4-32 odd and very difficult to find. I have been trying for a long time locally and have not found one.

Ken
  ----- Original Message ----- 
  From: jivey61 at bellsouth.net 
  To: NSRCA Mailing List 
  Sent: Saturday, August 26, 2006 9:49 PM
  Subject: Re: [NSRCA-discussion] Engine problem


  Ron 
  I think you are right I just know it isn't 10-32. You can't get the tap just any hardware store.I have one but been a long time since I had to use it.

  Jim Ivey
    ----- Original Message ----- 
    From: Ron Van Putte 
    To: NSRCA Mailing List 
    Sent: Saturday, August 26, 2006 9:13 PM
    Subject: Re: [NSRCA-discussion] Engine problem




    On Aug 26, 2006, at 7:55 PM, <jivey61 at bellsouth.net> wrote:


      Nat
       Isn't the glow plug a 10-28, not a 10-32??????


    Actually, I think it's neither.  I think that glow plug threads are 1/4-32.


    Ron Van Putte

        ----- Original Message ----- 
        From: Nat Penton 
        To: NSRCA Mailing List 
        Sent: Saturday, August 26, 2006 6:31 PM
        Subject: Re: [NSRCA-discussion] Engine problem


        MattK
        You have just pointed out the easy way to square up the head where the glow plug seats. Take a headless 10-32 bolt and screw into the glow openning from the bottom. Use a lock nut if possible. Chuck the bolt in the lathe and cut the glo washer seat. Who do I bill for this ?   
          ----- Original Message ----- 
          From: Rcmaster199 at aol.com 
          To: nsrca-discussion at lists.nsrca.org 
          Sent: Saturday, August 26, 2006 2:05 PM
          Subject: Re: [NSRCA-discussion] Engine problem


          Are there end mill bits available with a square central locating shoulder built in? Seems that may be the easiet way to get what Earl suggests. Another two step approach might be to use drill rod that just fits the hole as the locator first, locking the head down in the fixture, then switching to the bit and touching the surface to square.

          MattK

          In a message dated 8/26/2006 1:49:06 PM Eastern Standard Time, johnferrell at earthlink.net writes:
            I hate to bug Clarence with the problem. Since the engine runs well the only real problem is it slobbers on the airplane. 

            I have a Lathe and Mill in the shop. Set up will be tricky, the plug is pretty deeply recessed. The risk to the threads by using a pilot rod in the hole is high.

            I believe I will anneal a plug washer and try a little of the liquid gasket goo. If that don't solve the problem I will just accept the mess. 

            John Ferrell    W8CCW
            "My Competition is not my enemy"
            http://dixienc.us/

              ----- Original Message ----- 
              From: Earl Haury 
              To: NSRCA Mailing List 
              Sent: Saturday, August 26, 2006 11:44 AM
              Subject: Re: [NSRCA-discussion] Engine problem


              John

              Assuming that the problem is lack of perpendicularity between the threaded hole and the gasket surface - find a "friend" that will set the thing up in a mill aligned on the threaded hole, then touch the gasket surface with a mill to square. (You might give Clarence a call also - unusual that he would not catch this.)

              Earl



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