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  #1  
Old 11-06-2014, 06:44 PM
Ron B. Ron B. is offline
 
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Location: Yarmouth, Nova Scotia
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Default tools

I see we need a 0.311" reamer , 5/15" is 0.3125" and obviously not what Van's wants us to use. Van's also calls this reamer a 7.9mm. Avery tools has there 5/16" reamer listed as under size 5/16" @ 0.3115" I do believe , should be OK.
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  #2  
Old 11-06-2014, 08:31 PM
SoCal Flyer SoCal Flyer is offline
 
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Go to www.amazon.com
Input the exact size reamer you are looking for.
Lots of them will show up.
Search .311 reamer or 7.9mm reamer.
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  #3  
Old 11-07-2014, 04:22 AM
Ron B. Ron B. is offline
 
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I placed an order with Averytools
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  #4  
Old 11-07-2014, 04:52 AM
Tom023 Tom023 is offline
 
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Location: Cypress, TX
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McMaster has them in increments of .0005. The .3110 is $24.
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Last edited by Tom023 : 11-07-2014 at 04:55 AM.
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  #5  
Old 11-07-2014, 08:32 AM
AlinNS AlinNS is offline
 
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Location: Welsford, Nova Scotia
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Hi Ron.

Be sure to check out McMaster Carr. I think they have a depot in Ontario because their shipping to our neck of the woods is incredibly fast for the price. Haven't been able to stump those guys yet for tools/bits!
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  #6  
Old 11-07-2014, 08:36 AM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Quote:
Originally Posted by Ron B. View Post
I see we need a 0.311" reamer , 5/15" is 0.3125" and obviously not what Van's wants us to use. Van's also calls this reamer a 7.9mm. Avery tools has there 5/16" reamer listed as under size 5/16" @ 0.3115" I do believe , should be OK.
In the world of precision machining and drilling, .0005" can mean a lot.
That is why reams are available in that size increment, and why the one specified is specifically .311 (or 7.9 mm which at the level of precision we are working to is the same size)

More specifically, if you measure a typical AN5 bolt it does not measure 5/16". They typically are .311 (vs .3125). That is one and a half thousandths smaller than 5/16". In an instance where a tight fit is desired (landing gear leg bolts for example), a hole that is .0015 over sized will be a rather loose fit for the bolt. Even .0005 larger could be undesirable depending on the actual diam of the bolt being installed.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

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Van's Aircraft Engineering Prototype Shop Manager
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  #7  
Old 11-07-2014, 09:14 AM
jswareiv jswareiv is offline
 
Join Date: Dec 2006
Location: New Orleans, LA
Posts: 474
Default Size Matters

Quote:
Originally Posted by rvbuilder2002 View Post
In the world of precision machining and drilling, .0005" can mean a lot.
That is why reams are available in that size increment, and why the one specified is specifically .311 (or 7.9 mm which at the level of precision we are working to is the same size)

More specifically, if you measure a typical AN5 bolt it does not measure 5/16". They typically are .311 (vs .3125). That is one and a half thousandths smaller than 5/16". In an instance where a tight fit is desired (landing gear leg bolts for example), a hole that is .0015 over sized will be a rather loose fit for the bolt. Even .0005 larger could be undesirable depending on the actual diam of the bolt being installed.
I looked on Avery's website and they show .3110 as the size, not .3115. Normally when the plans call for a tool that we probably don't have, it is listed on the front page of that section at the bottom. I didn't see this reamer listed. I like that feature because I usually look at all of the 1st pages, so when I am ordering tools, I can order them at the same time and hopefully get a cut on freight and it's more convenient to have it when you need it. Thanks.
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Last edited by jswareiv : 11-07-2014 at 09:16 AM.
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  #8  
Old 11-07-2014, 10:23 AM
Tom Martin Tom Martin is offline
 
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Location: Ontario, Canada
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These types of tools are available in almost every medium sized town in North America. There is no need to pay for shipping and experience time delays for these reamers/drills. Check out your local industrial area, there will be a tool shop there that probably stocks these drills and reamers.
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  #9  
Old 11-07-2014, 10:25 AM
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rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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Quote:
Originally Posted by jswareiv View Post
I looked on Avery's website and they show .3110 as the size, not .3115. Normally when the plans call for a tool that we probably don't have, it is listed on the front page of that section at the bottom. I didn't see this reamer listed. I like that feature because I usually look at all of the 1st pages, so when I am ordering tools, I can order them at the same time and hopefully get a cut on freight and it's more convenient to have it when you need it. Thanks.
An attempt has been made to do that, but may have been missed in some instances.
What plans section did it call for the .311 reamer, and was this the first instance in the plans that it was needed?
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #10  
Old 11-07-2014, 07:21 PM
jswareiv jswareiv is offline
 
Join Date: Dec 2006
Location: New Orleans, LA
Posts: 474
Default Reamer

Quote:
Originally Posted by rvbuilder2002 View Post
An attempt has been made to do that, but may have been missed in some instances.
What plans section did it call for the .311 reamer, and was this the first instance in the plans that it was needed?
25.2, the first section in the fuselage. I ordered one from Avery and on there site, it says it is, .3110. I received it today and the package says, .3115. So, Scott, will it make a difference that I should return it to Avery? Thanks Scott. Just received my kit and there are a cagillion parts. I can't wait to get started. Thanks.
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