From: Jerry Hey <jerryhey@earthlink.net>
Date: 2005/06/29 Wed PM 10:49:10 EDT
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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/
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