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To slosh or not to slosh

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Geoff Heap

Joined: 12 Jan 2006
Posts: 266
Location: Lindenwold, New Jersey

Posted: Tue Jun 20, 2006 4:25 am Post subject: To slosh or not to slosh

Hey Guys.

Can someone please give me the 10 cent tour on sloshing. I'm getting ready to install my header tank and i could use some advice on what is best to clean the inside with, and then. Is sloshing always to be done on alum tanks? Whats the rule here? 

I'm thinking that it will help with possible pinholes resulting from welding. I HAVE pressure tested my tank and it held for 30 minutes at least but there could be a pinhole waiting to rear its ugly head in service ............Thanks...Geoff

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larry(at)macsmachine.com
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Posted: Tue Jun 20, 2006 6:12 am Post subject: To slosh or not to slosh

Geoff,

The tank is likely not to have any pinholes if you lightly pressured the 

tank and brushed bubble solution around the welded

joints.  Sloshing a tank that is not part of the wing skins probably 

would help you cleans the tank of debris, but I'd only do it

after the question of leakage, seepage and pinholes is certifiably 

satisfied.  A pinhole doesn't occur after welding.  It's there and

you discover it in the process, weld it shut and look for more.  The 

average is likely half a dozen on first weld and you may find

more for a short while, but don't use water to flush or test for leaks.  

Water will mess up your windings in the fuel sender and not

give you accurate readings later.   I committed all these sins with 

regret, new senders, etc. 



Larry McFarland - 601HDS at www.macsmachine.com

Geoff Heap wrote:



 	  Quote: 	
		  



Hey Guys.

Can someone please give me the 10 cent tour on sloshing. I'm getting ready to install my header tank and i could use some advice on what is best to clean the inside with, and then. Is sloshing always to be done on alum tanks? Whats the rule here? 

I'm thinking that it will help with possible pinholes resulting from welding. I HAVE pressure tested my tank and it held for 30 minutes at least but there could be a pinhole waiting to rear its ugly head in service ............Thanks...Geoff





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frank.hinde(at)hp.com
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Posted: Tue Jun 20, 2006 7:47 pm Post subject: To slosh or not to slosh

Depends on how long you want to live?...Ok that's a bit harsh but I have

personally witnessed a plane crash due to sloshing...The sad part is I

warned the owner about it just before his first flight.



What can happen is the slosh makes like dangly boogers hanging down

inside the tank...which harden and after a whie break off and plug your

fuel strainer.



More risky on slender wing tanks where you can't see inside but even so

you need to be sure there are no danglies if you insist on using this

stuff.



Needless to say I would not recommend it



Frank 



--

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Afterfxllc(at)aol.com
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Posted: Tue Jun 20, 2006 8:15 pm Post subject: To slosh or not to slosh

I'm not sure if anyone covered this or not but Van's used to tell you to  

slosh the tanks but not anymore.... I have seen that stuff flaking off in the  

tank and I would never slosh a tank...if you use proseal properly it will make  

the biggest mess in the world but not leak.

 

Jeff

601 xl hanging engine

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