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From: "Michael D. Callahan" <micallahan@worldnet.att.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1026729@logan.com>
Subject: Re: [FlyRotary] Re: Machining help needed
Date: Wed, 29 Jun 2005 22:25:34 -0500
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    You need to find somebody with a tool and cutter grinder who knows how
to use it. You might look for a tool cutter sharpening service in your area.
They can make that into the size reamer you need.
    You might can buy a proper sized one from MSC, Travers, or one of the
other industrial supply houses.
    Do not use the flapper wheel, it'll be anything BUT straight.  Mike C.


----- Original Message ----- 
From: "Jerry Hey" <jerryhey@earthlink.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, June 29, 2005 9:49 PM
Subject: [FlyRotary] Re: Machining help needed


> Mike,  the closest reamer I have located is a .5469 which is only
> slightly too big.  It probably would work but if I could stay within
> tolerances that would be better.  The bore  is sized to create the
> right crush on the o-ring.  Pressurized fuel,  leaking is not  an
> option.    Jerry
>
>
> On Wednesday, June 29, 2005, at 09:10 PM, Michael D. Callahan wrote:
>
> > You need a proper sized fluted reamer for that. The boring bar wil be
> > far
> > too rough and you have to have a full through hole for  the adjustable
> > reamers. Drill and/or bore the hole about .015 undersize and ream it
> > up from
> > there.
> >     If you were closer, I'd knock this right out for you.  Mike C.
> >
> >
> > ----- Original Message -----
> > From: "Jerry Hey" <jerryhey@earthlink.net>
> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> > Sent: Wednesday, June 29, 2005 9:07 PM
> > Subject: [FlyRotary] Machining help needed
> >
> >
> >> I need to find someone to finish the bores on my injector bosses or
> >> tell me how to do it.   Final i.d.should be .540 to .545 in.    The
> >> bosses are .45 in high and are bored and reamed to .5312.  Material is
> >> 6061.   I tried using a boring bar but could not maintain the
> >> tolerances.  I bought adjustable hand reamers but they were not the
> >> right tool for the job.  I considered trying to sand the bore to the
> >> correct size using a flapper but have not tried it  yet.  Suggestions?
> >> Volunteers?     Jerry
> >>
> >>
> >>
> >>>>  Homepage:  http://www.flyrotary.com/
> >>>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >
> >
> >>>  Homepage:  http://www.flyrotary.com/
> >>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html