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6.4mm Reamer?

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slook(at)mchsi.com
Guest

Posted: Mon Apr 16, 2007 5:55 am Post subject: 6.4mm Reamer?

I started to install the aileron bellcrank yesterday but found that 

the bushing doesn't fit. I see the note about reaming the bearing 

block to 6.4mm.  How do I do that? Do I need to put some kind of lube 

on the bushing?



Thanks,

Steve



Steve Look

Monticello, IL

601XL, Corvair

"Dogs have owners, Cats have staff"

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lrepilot(at)yahoo.com
Guest

Posted: Mon Apr 16, 2007 6:26 am Post subject: 6.4mm Reamer?

You can either buy a reamer the correct size, or spin

the bushing down to fit the existing hole. I measured

my bushings and they were 0.254 inch dia, so I reamed

the holes out with a 0.255 reamer.

regds

Ken

--- "Stephen R. Look" <slook(at)mchsi.com> wrote:



 	  Quote: 	
		   

 <slook(at)mchsi.com>

 

 I started to install the aileron bellcrank yesterday

 but found that 

 the bushing doesn't fit. I see the note about

 reaming the bearing 

 block to 6.4mm.  How do I do that? Do I need to put

 some kind of lube 

 on the bushing?

 

 Thanks,

 Steve

 

 Steve Look

 Monticello, IL

 601XL, Corvair

 "Dogs have owners, Cats have staff" 

 

 



 browse

 Subscriptions page,

 FAQ,

 http://www.matronics.com/Navigator?Zenith-List



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p.mulwitz(at)worldnet.att
Guest

Posted: Mon Apr 16, 2007 8:45 am Post subject: 6.4mm Reamer?

Hi Steve,



You need to buy a reamer.  You drill the hole to a little bit (.010 

or .020 inches) smaller than the reamer size then run the reamer 

through the hole to get the final size.  I would recommend a hand 

reamer, but you can also use a chucking reamer and a drill press or 

other drilling machine.



There are many sources of reamers in any size you want.  Travers Tool 

is a good one for folks near the east coast.  On the West coast, MSC 

is a good choice.



Lubrication should not be necessary for a slow moving part like the 

bell crank, but you might want to apply a little from time to 

time.  The lube will go between the inside of the bushing and the bolt.



Paul

XL fuselage

At 05:52 AM 4/16/2007, you wrote:

 	  Quote: 	
		  



I started to install the aileron bellcrank yesterday but found that 

the bushing doesn't fit. I see the note about reaming the bearing 

block to 6.4mm.  How do I do that? Do I need to put some kind of 

lube on the bushing?

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JohnDRead(at)aol.com
Guest

Posted: Mon Apr 16, 2007 8:56 pm Post subject: 6.4mm Reamer?

A letter "F" drill is 0.254 diameter and works just fine. 

  

 John



See what's free at AOL.com. 

  [quote][b]

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slook(at)mchsi.com
Guest

Posted: Tue Apr 17, 2007 6:08 am Post subject: 6.4mm Reamer?

Thanks for all the replies. A friend that works in a machine shop said they have a .252 reamer I can use. I just couldn't see spending $30 for those two little holes!

 I found out that 6.4mm {~.252} is a standard metric drill size and those cost about $2.



 Steve



 At 11:55 PM 4/16/2007, you wrote:



  	  Quote: 	
		  A letter "F" drill is 0.254 diameter and works just fine. 

  	
 

 Steve Look

 Monticello, IL

 601XL, Corvair

 "Dogs have owners, Cats have staff"

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dbortol

Joined: 02 Sep 2006
Posts: 46

Posted: Tue Apr 17, 2007 7:24 am Post subject: 6.4mm Reamer?

Steve,



Keep it mind, a reamer makes a very accurately sized, _round_ hole.

The hole from a drill bit is only approximately round. They don't

accomplish exactly the same result. I'm not sure about the application

in this case, but if the roundness is important, definitely use a

reamer.



Dino



On 4/17/07, Stephen R. Look <slook(at)mchsi.com> wrote:

 	  Quote: 	
		   Thanks for all the replies. A friend that works in a machine shop

 said they have a .252 reamer I can use. I just couldn't see spending

 $30 for those two little holes!

 I found out that 6.4mm {~.252} is a standard metric drill size and

 those cost about $2.



 Steve

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barcusc(at)comcast.net
Guest

Posted: Tue Apr 17, 2007 8:28 am Post subject: 6.4mm Reamer?

Dino is right, the purpose of a reamer is roundness of the hole and a very 

smooth finish. I bought the correct reamer for about $15.00 through MSC.



Clyde Barcus

601 XL, Continental Powered

Wings, Tail & Engine Complete

Working on Fuselage



---

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slook(at)mchsi.com
Guest

Posted: Thu Apr 19, 2007 3:09 pm Post subject: 6.4mm Reamer?

The plot thickens! I'm glad I didn't spend money to buy a reamer. The 

bell crank hole is already at 6.4mm. Stopped by my buddy's house 

tonight to run the reamer through the two parts and it passed right 

through! Measured with my cheap Chinese mic at .252". So I came back 

home and measured my 1/4" bushings... .252".

I guess I'll spin the bushings over a file or something and knock a 

few .001s off of them.



Steve



Steve Look

Monticello, IL

601XL, Corvair

"Dogs have owners, Cats have staff"

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