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Date: Sat, 22 Mar 2008 20:51:01 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Porting
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Ernest Christley wrote:
> Porting an engine with a drill will destroy it.
>
> Plain and simple.  No ifs, ands or buts.  I have a die grinder, but 
> nothing more than a pancake compressor so actually using it is 
> painful.  I could buy a larger compressor, but then I have to find 
> someplace to store it.  Having everything else I need to start the 
> porting process, I improvised.  Chucked the parabolic bit into my 
> drill and had at it.
>
> 4 hours, and only one oopsie, later, I had a nicely ported intake, and 
> a drill with a chuck that wobbles like a drunken sailor.  I'm talking 
> at least 1/2" of play at the tip of the chuck.  Fortunately, these 
> drills are cheap at Northern Tool.  I can get them for $15 when 
> they're on sale.  The extra handle gives you a lot to hold onto as 
> you're grinding away; hence, the single oopsie.  You hate for tools to 
> be considered disposable, but in this case it worked out really well.
>
> http://ernest.isa-geek.org/Delta/Pictures/ EnginePortingTemplate.jpg
> http://ernest.isa-geek.org/Delta/Pictures/EnginePortingIntermediateHousingRear.jpg  
>
> http://ernest.isa-geek.org/Delta/Pictures/EnginePortingRearHousing.jpg
> http://ernest.isa-geek.org/Delta/Pictures/EnginePortingIntermediateHousingFront.jpg  
>
> http://ernest.isa-geek.org/Delta/Pictures/EnginePortingRearHousing2.jpg    
>     
> http://ernest.isa-geek.org/Delta/Pictures/EnginePortingFrontHousingOopsie.jpg 
> <http://ernest.isa-geek.org/Delta/Pictures/EnginePortingFrontHousingOopsie.jpg> 
>
>
> -- 
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>
You've discovered the reason you can buy them for $15. :-)  I buy a lot 
of stuff from Harbor Freight (a lot like NT), but I haven't had much 
luck with their power tools.

I've tried to get familiar with where all the 'well stocked' pawn shops 
are located in the areas where I typically drive. If I have time, I stop 
in & look over their tool selections periodically.  Around here, I'll 
see the putrid green $25 B&D homeowner grade drills priced at $35 & 
right beside them, B&D 'HolGun' series (~$175 retail) for ...$35. Same 
story for industrial grade Skill & Milwaukee tools. The only way you'll 
wear out one of these industrial grade drills is to pour grinding 
compound into the bearings.

For one-time work like you're doing, HF sells an electric tool with a 
1/4" collet for about $20 when it's on sale. It's intended to be a 
laminate trimmer, but you can remove the 'foot' & it will function like 
a high speed air grinder.

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=44914

Now, how do I get my freshly installed Puppy Linux computer to 
automatically recognize shared folders on my Windoze computer attached 
to the same network?

Charlie