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George,
I have to disagree with your observation. The boring tool, by itself will not yield a surface appropriate for seating the injector o-ring (and easy removal for service). It will have to be followed by honing or reaming. And most (inexpensive) boring tools are difficult to adjust to +/- 0.001. Jerry's best (& least expensive) bet is to have a standard size reamer ground down to his target size.
Regards,
Dale R.
From: "George Lendich" <lendich@optusnet.com.au>
Date: 2005/06/30 Thu AM 02:47:09 EDT
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: Machining help needed
Jerry,
The boring tool should be very accurate - provided your using a mill and
holding the job very securely.
George ( down under)
> 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
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