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A 17/32 is .5312 which is too small. I need .540 to .545. Following your advice I will find someone to grind a 35/64 down. Is this mistaken in some way? Jerry
On Wednesday, June 29, 2005, at 10:59 PM, Michael D. Callahan wrote:
BTW, you need a 17/32" reamer. You have a 35/64". 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
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