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Ernest,
I have an air compressor that you can borrow if you like. It will probably
do a pretty good job with an air grinder.
Regards,
Steve Brooks
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of Charlie England
Sent: Saturday, March 22, 2008 9:51 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Porting
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/EnginePortingIntermediateHousingRe
ar.jpg
http://ernest.isa-geek.org/Delta/Pictures/EnginePortingRearHousing.jpg
http://ernest.isa-geek.org/Delta/Pictures/EnginePortingIntermediateHousingFr
ont.jpg
http://ernest.isa-geek.org/Delta/Pictures/EnginePortingRearHousing2.jpg
http://ernest.isa-geek.org/Delta/Pictures/EnginePortingFrontHousingOopsie.jp
g
<http://ernest.isa-geek.org/Delta/Pictures/EnginePortingFrontHousingOopsie.j
pg>
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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
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