Corrosion is where ya find it.

[Tom-D]

Many folks worry about structural corrosion with good cause but that isn't the only place you find it, and it costs as much to cure the problems as if it were a spar.
pictures the before and after of the fuel finger strainers of the 150 project.

 

[Tom-D]

just to add, all the aluminum tubing in the fuel system is the same all must be replaced.

 

[somorris]

Wow.

 

[Timbeck2]

Before and after what? Are the second pair new or bead blasted clean?

 

[mscard88]

Before and after what? Are the second pair new or bead blasted clean?

That's what I assumed...

 

[Tom-D]

they were bead blasted here at home

 

[Timbeck2]

I'm not implying that bead blasting is an unacceptable method of cleaning, I'm just asking. They look good to me.

 

[Tom-D]

Here are the gas caps, and wing tip lighting

 

[Tom-D]

I'm not implying that bead blasting is an unacceptable method of cleaning, I'm just asking. They look good to me.

pretty much a normal cleaning method.

 

[Capt. Geoffrey Thorpe]

So this is a long time ramp queen?

 

[Tom-D]

So this is a long time ramp queen?

dry storage 1987 to now.
squirrel had a nest in the right wing tip, actually ate a hole thru the skin, ruined the light fixture, the rest is simply time and ?
I don't know if I can save the baggage compartment floor or not. Some Times it is simply easier to replace.

 

[Tom-D]

Alodining - before and after
the gear leg step plates, cast aluminum.

 

[Let'sgoflying!]

I bet you did a survey of the expensy parts of the a/c before you started changing fuel strainers and light fixtures....to determine if the entire project is ber.

 

[Tom-D]

I bet you did a survey of the expensy parts of the a/c before you started changing fuel strainers and light fixtures....to determine if the entire project is ber.

Remember I bought this project for the core engine. any thing else is gravy. But any way, it's a late model 150 market is pretty good at 25-30 if done right.

 

[GlennAB1]

Alodining - before and after
the gear leg step plates, cast aluminum.

****, use enough alodine?

 

[Tom-D]

****, use enough alodine?

doesn't take much when you dip freshly beaded cast aluminum, that's about 5 seconds in the tank.

 

[Tom-D]

****, use enough alodine?

Show us how you do it .

 

[GlennAB1]

I buy off a lot of structures work. Never seen alodine that dark, it's usually light golden.

 

[Tom-D]

I buy off a lot of structures work. Never seen alodine that dark, it's usually light golden.

on smooth surfaces that is the color, on rough beaded surface it will show much darker.
how often do you see pure cast aluminum ?

 

[GlennAB1]

Do you use 1200S? The Boeing 757 SRM states to apply the solution by brush or clean cotton cloth and rub the wet surface until gold color comes into view (approximately 30 seconds).

Yours is gold color alright, nevermind.

 

[Tom-D]

Do you use 1200S? The Boeing 757 SRM states to apply the solution by brush or clean cotton cloth and rub the wet surface until gold color comes into view (approximately 30 seconds).

Yours is gold color alright, nevermind.

I dip, right out of the bead cabinet.
Remember Alodine is a 6% solution of Chromic acid, if you are rubbing you are cleaning the surface to get the color.
are you allowed to etch?

 

[GlennAB1]

Do you have to bead blast the steps too?

 

[mtuomi]

Remember I bought this project for the core engine. any thing else is gravy. But any way, it's a late model 150 market is pretty good at 25-30 if done right.

25-30 needs fresh engine and /G and new interior.

 

[Tom-D]

25-30 needs fresh engine and /G and new interior.

And that is what it will have.

 

[mtuomi]

And that is what it will have.

Then should be an easy-ish sell. There seems to be a lot of movement in the 150/152 market at the moment.

 

[GlennAB1]

are you allowed to etch?

No, we mechanically abraid.

 

[Tom-D]

No, we mechanically abraid.

with what ?
most won't clean the surface chemically.
glass beading will as will etching.

 

[Tom-D]

Then should be an easy-ish sell. There seems to be a lot of movement in the 150/152 market at the moment.

cheap flying is what seems to sell.

 

[GlennAB1]

with what ?
most won't clean the surface chemically.
glass beading will as will etching.

Aluminum oxide, or type A Scotch-Bright.

 

[GlennAB1]

Oh, have to clean it with solvent before Alodining too.

 

[Tom-D]

Aluminum oxide, or type A Scotch-Bright.

There's your problem,, use glass bead, 1100 grit. with a portable dry hone.
then spray the 1200 on and keep it wet for 5-10 seconds. that will produce a nice golden color.
many won't etch because of hydrogen embrittlement.

 

[Tom-D]

Oh, have to clean it with solvent before Alodining too.

solvent is an oil. so is anything derived from a barrel of crude
no wonder you must rub with a cloth, you must have a clean water break free surface prior to applying the 1200. read the directions in AC 43,13.

this is but one pre-cleaner to use prior to alodine 1200.
http://www.eastwood.com/eastwood-af...e=&network=g&gclid=CKPv-fvfw9ICFUhufgod3zgKmw

 

[GlennAB1]

Manufacturer SRM trumps 43.13, calls out specific solvent.

 

[Tom-D]

Manufacturer SRM trumps 43.13, calls out specific solvent.

call for a review.

What solvent. ?

 

[GlennAB1]

I'm too close to retirement of give a ****.

Series 88 or equivalent.

 

[GlennAB1]

There's your problem,, use glass bead, 1100 grit.

Let me guess, you bead blast different metals with the same medium?

 

[Tom-D]

Let me guess, you bead blast different metals with the same medium?

nope, the cessna's are 99% 2024-T3.
But my system is a filtered system that removes any fractured glass that has struck the item being cleaned, once the glass is turned to powder it is removed.
The NAVY uses one booth for all, and they have no problems, So why should there be any problems with mine when 99% of the items being cleaned are 2024- ?

 

[Checkout_my_Six]

So....who did your pre-buy?

 

[Tom-D]

So....who did your pre-buy?

Some old A&P who wanted the engine.

 

[Checkout_my_Six]

Some old A&P who wanted the engine.

See....there's your problem.