The Murphy Builders Site

Posted: **Fri Feb 17, 2012 11:58 pm**

Guys

What do you think of the air dryer this company (www.flyingsafer.com) are also
offering on their site? The idea is to pump de-humidified air through the
engine between flights to keep the moisture content low thus keep the engine
from rusting. Anyone have any industrial experience that would say if this
would work? Basically they are using a container of dessicant to dry the air.

If it is for real, wouldn't this solve the corrosion problem for engines not
flown a lot? Any flaws in the theory?

Cheers,

Dave

Alan Hepburn wrote:

I see there's a gear warning system for amphibians mentioned on p118 of
the Novemeber Sport Aviation. Details at www.flyingsafer.com. Function
appears similar to the one Montana Floats are offering, and it's not
outlandishly priced ($430 US).

Al Hepburn

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Posted: **Fri Feb 17, 2012 11:58 pm**

I figure about good for the first day of circulating air and then if you
didn't put the dessicant into the oven and reload the pepsi bottle you would
just be getting wetter and wetter air circulaing through out the engine. We
use dessicant driers on our injection moulding machines to predry nylon/poly
carb/engineering resin/etc pellets before melting them. The unit switches
back and forth between dessicant beds, about every 15 to 20 minutes, to
absorb the materials moisture in one bed while drying the other bed using
heaters. Any longer than about an hour through one bed and instead of drying
the material it starts adding all the humidity in the building to the
material, making things much worse than if you had of just dumped the bag of
raw material into an open hopper.

Wayne

----- Original Message -----
From: "David Ricker" <ricker@inherentsys.ca>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, November 08, 2003 7:07 PM
Subject: Engine Air Dryer, was: Re: Gear Warning System

Guys

What do you think of the air dryer this company (www.flyingsafer.com) are

also

offering on their site? The idea is to pump de-humidified air through the
engine between flights to keep the moisture content low thus keep the

engine

from rusting. Anyone have any industrial experience that would say if

this

would work? Basically they are using a container of dessicant to dry the

air.

If it is for real, wouldn't this solve the corrosion problem for engines

not

flown a lot? Any flaws in the theory?

Cheers,

Dave

Alan Hepburn wrote:

I see there's a gear warning system for amphibians mentioned on p118 of
the Novemeber Sport Aviation. Details at www.flyingsafer.com. Function
appears similar to the one Montana Floats are offering, and it's not
outlandishly priced ($430 US).

Al Hepburn

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David A. Ricker
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Posted: **Fri Feb 17, 2012 11:58 pm**

I've no doubt it would help especially for Lycoming camshafts. However
even if you have electric power to run it, I'm dubious that enough air
will pass the rings to protect the valves. How could it protect the
exhaust or intake valve that is open for instance? For that you would
still need dessicant bags on the exhaust and intake as per the cdn$15.
for 2 kg. of dessicant from Lee Valley tools that I mentioned awhile
ago. Of course if you do that, you could also tie a plastic bag of it to
the crankcase vent as well which means no moist air is going in anywhere
to condense. I am using the 3 bags of dessicant and no powered pump and
I think I'm better off than with just the powered pump. Obviously I
don't believe that moisture coming out of the oil is the main problem.
Ken

David Ricker wrote:

Guys

What do you think of the air dryer this company (www.flyingsafer.com) are also
offering on their site? The idea is to pump de-humidified air through the
engine between flights to keep the moisture content low thus keep the engine
from rusting. Anyone have any industrial experience that would say if this
would work? Basically they are using a container of dessicant to dry the air.

If it is for real, wouldn't this solve the corrosion problem for engines not
flown a lot? Any flaws in the theory?

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Posted: **Fri Feb 17, 2012 11:58 pm**

When we first opened shop in '85 we cheated with a normal house oven and
aluminum "turkey trays" of resin. We got away with this when only running 2
machines, but even then only in dry weather, but definitely not now with 27+
machines going 24 hours/day. If it's a 100% humidity day even heating in an
oven can just make things worse. You have to pull the hot moist air out and
through dessicant in a recirculating manor to pull the moisture level down
and down. We have floor unit dryers and try to get material in them 3 to 4
hours prior to machine mould change or start up. Then we load the machine
hopper from the floor dryer with enough to get the first couple hours of
machine running time and the machine mounted dryer takes over from there to
stay with the process continuously, or until the "under paid" material
handler forgets to load the hopper or vacuum auto loader bucket and we start
producing nice steamy moisture streaked parts!! :o((

Wayne

----- Original Message -----
From: "David Ricker" <ricker@inherentsys.ca>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, November 09, 2003 12:26 AM
Subject: Re: Engine Air Dryer, was: Re: Gear Warning System

Yeah, I kind of wondered how long before the dessicant would drop below

the

"effective" level, your PC dryer experience is a good benchmark. Like Ken

said

too, there would also be issues with the things outside the crankcase.

I would have thought just heating the resin pellets for a time period

before

using would do the trick, this is how I have seen it done for

thermo-forming PC

sheet. How long does it take to dry a batch of pellets with your system?

Dave R.

"Wayne G. O'Shea" wrote:

I figure about good for the first day of circulating air and then if you
didn't put the dessicant into the oven and reload the pepsi bottle you

would

just be getting wetter and wetter air circulaing through out the engine.

We

use dessicant driers on our injection moulding machines to predry

nylon/poly

carb/engineering resin/etc pellets before melting them. The unit

switches

back and forth between dessicant beds, about every 15 to 20 minutes, to
absorb the materials moisture in one bed while drying the other bed

using

heaters. Any longer than about an hour through one bed and instead of

drying

the material it starts adding all the humidity in the building to the
material, making things much worse than if you had of just dumped the

bag of

raw material into an open hopper.

Wayne

----- Original Message -----
From: "David Ricker" <ricker@inherentsys.ca>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, November 08, 2003 7:07 PM
Subject: Engine Air Dryer, was: Re: Gear Warning System

Guys

What do you think of the air dryer this company (www.flyingsafer.com)

are

also
offering on their site? The idea is to pump de-humidified air through

the

engine between flights to keep the moisture content low thus keep the
engine
from rusting. Anyone have any industrial experience that would say if
this
would work? Basically they are using a container of dessicant to dry

the

air.
If it is for real, wouldn't this solve the corrosion problem for

engines

not
flown a lot? Any flaws in the theory?

Cheers,

Dave

Alan Hepburn wrote:

of

Function

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Fall River, Nova Scotia
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Fall River, Nova Scotia
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Posted: **Fri Feb 17, 2012 11:58 pm**

Yeah, I kind of wondered how long before the dessicant would drop below the
"effective" level, your PC dryer experience is a good benchmark. Like Ken said
too, there would also be issues with the things outside the crankcase.

I would have thought just heating the resin pellets for a time period before
using would do the trick, this is how I have seen it done for thermo-forming PC
sheet. How long does it take to dry a batch of pellets with your system?

Dave R.

"Wayne G. O'Shea" wrote:

I figure about good for the first day of circulating air and then if you
didn't put the dessicant into the oven and reload the pepsi bottle you would
just be getting wetter and wetter air circulaing through out the engine. We
use dessicant driers on our injection moulding machines to predry nylon/poly
carb/engineering resin/etc pellets before melting them. The unit switches
back and forth between dessicant beds, about every 15 to 20 minutes, to
absorb the materials moisture in one bed while drying the other bed using
heaters. Any longer than about an hour through one bed and instead of drying
the material it starts adding all the humidity in the building to the
material, making things much worse than if you had of just dumped the bag of
raw material into an open hopper.

Wayne

----- Original Message -----
From: "David Ricker" <ricker@inherentsys.ca>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, November 08, 2003 7:07 PM
Subject: Engine Air Dryer, was: Re: Gear Warning System

Guys

What do you think of the air dryer this company (www.flyingsafer.com) are
also
offering on their site? The idea is to pump de-humidified air through the
engine between flights to keep the moisture content low thus keep the
engine
from rusting. Anyone have any industrial experience that would say if
this
would work? Basically they are using a container of dessicant to dry the
air.
If it is for real, wouldn't this solve the corrosion problem for engines
not
flown a lot? Any flaws in the theory?

Cheers,

Dave

Alan Hepburn wrote:

I see there's a gear warning system for amphibians mentioned on p118 of
the Novemeber Sport Aviation. Details at www.flyingsafer.com. Function
appears similar to the one Montana Floats are offering, and it's not
outlandishly priced ($430 US).

Al Hepburn

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Posted: **Fri Feb 17, 2012 11:58 pm**

Hey Wayne,

Yeah, but you're drying a continually new batch of product, and trying
to do so in a pretty short time, and by driving dry air through the
wet product to lower the moisture content. Therefore lots and lots
air to dry, so you fill the dryers pretty rapidly. And it works and
IS worth doing for better moulding isn't it?

I would assume that the air flow theory is opposite to your needs and
(3 WATTS??) is extremely low through the unit. And maybe these guys
have a control to shut off the air flow if the desiccant needs drying.

Take care.

Brian Lawson,
Bothwell, Ontario.
XXXXXXXXXXXXXXXXXXXXXX

I figure about good for the first day of circulating air and then if you
didn't put the dessicant into the oven and reload the pepsi bottle you

would

just be getting wetter and wetter air circulaing through out the engine.

We

use dessicant driers on our injection moulding machines to predry

nylon/poly

carb/engineering resin/etc pellets before melting them. The unit

switches

back and forth between dessicant beds, about every 15 to 20 minutes, to
absorb the materials moisture in one bed while drying the other bed

using

heaters. Any longer than about an hour through one bed and instead of

drying

the material it starts adding all the humidity in the building to the
material, making things much worse than if you had of just dumped the

bag of

raw material into an open hopper.

Wayne

----- Original Message -----
From: "David Ricker" <ricker@inherentsys.ca>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, November 08, 2003 7:07 PM
Subject: Engine Air Dryer, was: Re: Gear Warning System

Guys

What do you think of the air dryer this company (www.flyingsafer.com)

are

also
offering on their site? The idea is to pump de-humidified air through

the

engine between flights to keep the moisture content low thus keep the
engine
from rusting. Anyone have any industrial experience that would say if
this
would work? Basically they are using a container of dessicant to dry

the

air.
If it is for real, wouldn't this solve the corrosion problem for

engines

not
flown a lot? Any flaws in the theory?

Cheers,

Dave

Alan Hepburn wrote:

I see there's a gear warning system for amphibians mentioned on p118

of

the Novemeber Sport Aviation. Details at www.flyingsafer.com.

Function

appears similar to the one Montana Floats are offering, and it's not
outlandishly priced ($430 US).

Al Hepburn

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Posted: **Fri Feb 17, 2012 11:58 pm**

FWIW a handfull or two of dessicant in bags (no fan) seems to last all
season and dries in the kitchen oven in less than an hour according to a
friend who has been doing this longer than me. That is simply based on
the color change crystals. Anyway it makes me feel better when working
on an engine that is externally wet with condensation, like mine often
is this time of year in Ontario. Yes I know I'm picky but I've also seen
visible rust appear on cylinders in a week here.

Some claim you can actually hear your car rust here once it gets covered
with winter salt ;) I know I can hear the insects chomp on my woodpile
on a really quiet day...

Also someone suggested once that they thought the commercial powered
unit did not run the fan continuously.

Ken

David Ricker wrote:

Yeah, I kind of wondered how long before the dessicant would drop below the
"effective" level, your PC dryer experience is a good benchmark. Like Ken said
too, there would also be issues with the things outside the crankcase.

I would have thought just heating the resin pellets for a time period before
using would do the trick, this is how I have seen it done for thermo-forming PC
sheet. How long does it take to dry a batch of pellets with your system?

Dave R.

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