I made a replacement shaft for an electric model airplane motor. My wife
bent the old one as part of the learning process (she's learning control
line. You cannot fly ten dumb thumbs high with a control line plane --
you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm rod to
length, made a 20-mil wide groove cutter, cut a groove, pressed out the
old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Tim Wescott wrote:

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10
for a replacement shaft! For just an hour's work!

Can I get a Triple Burger on a Kaiser roll, or would it be cheaper to
get the Big Classic Double with an extra beef patty?

--

On Tue, 14 Jul 2015 19:49:53 -0500, Tim Wescott
wrote:

I made a replacement shaft for an electric model airplane motor. My wife
bent the old one as part of the learning process (she's learning control
line. You cannot fly ten dumb thumbs high with a control line plane --
you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm rod to
length, made a 20-mil wide groove cutter, cut a groove, pressed out the
old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

So, at $15.00 an hour, minimum wage, you only lost six dollars and
fifty cents :-)
--
cheers,

John B.

On Tuesday, July 14, 2015 at 8:49:55 PM UTC-4, Tim Wescott wrote:
I made a replacement shaft for an electric model airplane motor. My wife
bent the old one as part of the learning process (she's learning control
line. You cannot fly ten dumb thumbs high with a control line plane --
you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm rod to
length, made a 20-mil wide groove cutter, cut a groove, pressed out the
old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Hope you at least made a second one while you were at it as a spare.

G'luck
PaulS

On 7/14/2015 7:49 PM, Tim Wescott wrote:
I made a replacement shaft for an electric model airplane motor. My wife
bent the old one as part of the learning process (she's learning control
line. You cannot fly ten dumb thumbs high with a control line plane --
you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm rod to
length, made a 20-mil wide groove cutter, cut a groove, pressed out the
old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

If I were doing this, it takes only a bit more time to make 2 or 3 for
the next accidents.

David

On Tue, 14 Jul 2015 19:49:53 -0500, Tim Wescott
wrote:

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

If you were to drive off to the shop to buy a new one, you would
probably have spent just as much time. And then there's the fuel cost
on top.
--
RoRo

On Wed, 15 Jul 2015 07:50:48 -0500, David R. Birch wrote:

On 7/14/2015 7:49 PM, Tim Wescott wrote:
I made a replacement shaft for an electric model airplane motor. My
wife bent the old one as part of the learning process (she's learning
control line. You cannot fly ten dumb thumbs high with a control line
plane -- you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm rod
to length, made a 20-mil wide groove cutter, cut a groove, pressed out
the old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for
a replacement shaft! For just an hour's work!

If I were doing this, it takes only a bit more time to make 2 or 3 for
the next accidents.

Most of the time was spent making the tool, and that's done.

We bent another one today, so I have my evening's entertainment laid out.

(She's learning control line, where basically you don't crash at all or
you land on the propeller. Infernal combustion engines tend to have much
stouter crankshafts than 'lectric, which is why those little Cox plastic
planes ever survived long enough for a second attempt).

--
www.wescottdesign.com

Tim Wescott wrote:

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

Were it in ThisPartOfRightPondia and Euro instead of Dollar, you'd
even have earned the recently established mandatory minimum salary.

--

"I'm a doctor, not a mechanic." Dr Leonard McCoy
"I'm a mechanic, not a doctor." Volker Borchert

On Wed, 15 Jul 2015 15:40:15 -0500, Tim Wescott
wrote:

On Wed, 15 Jul 2015 07:50:48 -0500, David R. Birch wrote:

On 7/14/2015 7:49 PM, Tim Wescott wrote:
I made a replacement shaft for an electric model airplane motor. My
wife bent the old one as part of the learning process (she's learning
control line. You cannot fly ten dumb thumbs high with a control line
plane -- you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm rod
to length, made a 20-mil wide groove cutter, cut a groove, pressed out
the old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for
a replacement shaft! For just an hour's work!

If I were doing this, it takes only a bit more time to make 2 or 3 for
the next accidents.

Most of the time was spent making the tool, and that's done.

We bent another one today, so I have my evening's entertainment laid out.

(She's learning control line, where basically you don't crash at all or
you land on the propeller. Infernal combustion engines tend to have much
stouter crankshafts than 'lectric, which is why those little Cox plastic
planes ever survived long enough for a second attempt).

My solution to teaching people to fly control-line planes was to teach
tem on 1/2-A planes in tall grass. It saved props and motors. g

--
Ed Huntress

On Wed, 15 Jul 2015 23:38:43 -0400, Ed Huntress wrote:

On Wed, 15 Jul 2015 15:40:15 -0500, Tim Wescott
wrote:

On Wed, 15 Jul 2015 07:50:48 -0500, David R. Birch wrote:

On 7/14/2015 7:49 PM, Tim Wescott wrote:
I made a replacement shaft for an electric model airplane motor. My
wife bent the old one as part of the learning process (she's learning
control line. You cannot fly ten dumb thumbs high with a control
line plane -- you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm
rod to length, made a 20-mil wide groove cutter, cut a groove,
pressed out the old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10
for a replacement shaft! For just an hour's work!

If I were doing this, it takes only a bit more time to make 2 or 3 for
the next accidents.

Most of the time was spent making the tool, and that's done.

We bent another one today, so I have my evening's entertainment laid
out.

(She's learning control line, where basically you don't crash at all or
you land on the propeller. Infernal combustion engines tend to have
much stouter crankshafts than 'lectric, which is why those little Cox
plastic planes ever survived long enough for a second attempt).

My solution to teaching people to fly control-line planes was to teach
tem on 1/2-A planes in tall grass. It saved props and motors. g

I'm working on an electric and foam alternative to that. Rev 2 will have
the motor behind the wing, pushing, and the battery in the nose. Boring
straight into the ground may mangle the fuse (we don't have tall grass),
but at least it won't damage the motor.

--
www.wescottdesign.com

On 15 Jul 2015 21:38:24 GMT, (Volker
Borchert) wrote:

Tim Wescott wrote:

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10 for a
replacement shaft! For just an hour's work!

Were it in ThisPartOfRightPondia and Euro instead of Dollar, you'd
even have earned the recently established mandatory minimum salary.

For Tim, I'll bet that his average hourly rate is a wee bit more.
I'll rate his statement with a Facetiousity Factor of 100%.

--
The business of America is not business. Neither is it war. The business
of America is justice and securing the blessings of liberty.
-- George F. Will

On Thu, 16 Jul 2015 00:35:07 -0500, Tim Wescott
wrote:

On Wed, 15 Jul 2015 23:38:43 -0400, Ed Huntress wrote:

On Wed, 15 Jul 2015 15:40:15 -0500, Tim Wescott
wrote:

On Wed, 15 Jul 2015 07:50:48 -0500, David R. Birch wrote:

On 7/14/2015 7:49 PM, Tim Wescott wrote:
I made a replacement shaft for an electric model airplane motor. My
wife bent the old one as part of the learning process (she's learning
control line. You cannot fly ten dumb thumbs high with a control
line plane -- you're always one or two mistakes away from disaster).

So, during the better part of an hour's worth of work, I cut a 3mm
rod to length, made a 20-mil wide groove cutter, cut a groove,
pressed out the old shaft, and pressed in the new one.

Making the cutter on my bench grinder took most of the time.

The best part is -- I saved $8.50! $7.40 for the motor, and $1.10
for a replacement shaft! For just an hour's work!

If I were doing this, it takes only a bit more time to make 2 or 3 for
the next accidents.

Most of the time was spent making the tool, and that's done.

We bent another one today, so I have my evening's entertainment laid
out.

(She's learning control line, where basically you don't crash at all or
you land on the propeller. Infernal combustion engines tend to have
much stouter crankshafts than 'lectric, which is why those little Cox
plastic planes ever survived long enough for a second attempt).

My solution to teaching people to fly control-line planes was to teach
tem on 1/2-A planes in tall grass. It saved props and motors. g

I'm working on an electric and foam alternative to that. Rev 2 will have
the motor behind the wing, pushing, and the battery in the nose. Boring
straight into the ground may mangle the fuse (we don't have tall grass),
but at least it won't damage the motor.
Junior's first attempt went ammazingly well in the park across the
street until, in an attempt to avoid the tree on our side of the
street, he did an accurate vertical hit on the top of a street light!
---

Gerry :-)}
London,Canada