How to lesson bubbles in the tank

Discussion on reviews of Glow/nitro and gas engines

How to lesson bubbles in the tank

Postby voidhawk » Wed Oct 13, 2010 12:30 am

Hi Guys,

My main concern now is that i want to remove bubbles from my tank. How do i lessen bubbles so that i wont have any deadstick on my plane?

Thanks
Mike
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Re: How to lesson bubbles in the tank

Postby jeffie8696 » Wed Oct 13, 2010 2:42 am

You can wrap the tank in foam rubber to isolate the vibrations. Also most name brand fuels use a fuel anti foam additive.
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Re: How to lesson bubbles in the tank

Postby RCModelReviews » Wed Oct 13, 2010 3:12 am

Another thing that helps is to use a sintered bronze or felt clunk. They can help a lot -- but basically it's down to vibration.

Make sure your prop is balanced and that your engine-mounting bolts are tight.

As has already been suggested, also check to make sure that your tank is nicely supported by foam rather than resting on the wooden structure of the fuselage.
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Re: How to lesson bubbles in the tank

Postby voidhawk » Thu Oct 14, 2010 1:54 pm

Thanks for the wonderful tips guys! The tank was resting on the wood mount itslef wow im so stupid not to put foam!
Also the positioning of the brass tubes are all facing downwards! This is all a catastrophe!

Alas my plane crashed! :cry:

Will now get a 2nd kit but will all combine all of your advises and make this 2nd time around perfect.

Guys what is a sintered bronze/felt clank?

Thanks
Guys!
Mike
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Re: How to lesson bubbles in the tank

Postby RCModelReviews » Thu Oct 14, 2010 9:14 pm

voidhawk wrote:Guys what is a sintered bronze/felt clank?


It's this
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Re: How to lesson bubbles in the tank

Postby noclassmac1972 » Fri Oct 15, 2010 5:55 am

For Glow or Diesel we use a couple of drops of Armor-all per litre.. Its amazing how well it works.. Try it by shaking some fuel and see the foam/bubbles that form Then add the Armor-all and see the change.....

Robert Bolton
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Re: How to lesson bubbles in the tank

Postby RCModelReviews » Fri Oct 15, 2010 9:05 am

That Armoral trick used to work well when they used silcone in it but they changed the formula a while back and the new stuff doesn't work nearly as well.

Also be aware that the silicone in the old Armoral will contaminate (thus shorten the life of) your glowplug.
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Re: How to lesson bubbles in the tank

Postby voidhawk » Fri Oct 15, 2010 1:49 pm

guys, are you referring to this one? the one you use to shine your car's dashboard?

Image
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Re: How to lesson bubbles in the tank

Postby RCModelReviews » Fri Oct 15, 2010 8:13 pm

Yep... that's the stuff (well the bottle I used was slightly different) -- but check to see if it contains silicone.
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Re: How to lesson bubbles in the tank

Postby jeffie8696 » Tue Oct 19, 2010 6:01 pm

If you are using Morgans Omega fuel it already has some ainti foam added, ask me how I know. :?
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