Fuel tank foaming/vibrating  
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Fuel tank foaming/vibrating - 5/29/2002 10:11:07 AM   
astrohog



Posts: 377
Joined: 12/8/2001
From: Bellingham, WA, USA
Status: offline 		I am flying Gremlins with both the MVVS .21 and the MVVS .26 as well as one with a Norvel .25. All of them are set up nearly identical (fuel tanks are set up identical). I have problems with the two MVVS engines. They run great and are tuned to perfection, but I get foaming problems and i think it has to do with the vibrations from the high performance engines. What can I do to reduce this problem. I am using fairly rigid closed-cell foam to encapsulate/isolate the tank. Is the latex foam better for vibration resistance? Or should I just get some of the fancy bladder tanks? They look kinda like a pain. Anyone have any experience that they can share?

Regards,

Jeff
       Post #: 1

foaming - 5/29/2002 6:52:35 PM   
kramer



Posts: 191
Joined: 12/16/2001
From: LaPorte, IN, USA
Status: offline 		Use Armorall.Keep putting a few drops at a time in your fuel and shake,when it stops foaming you can stop addin it.

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(in reply to astrohog)
       Post #: 2

Fuel tank foaming/vibrating - 5/29/2002 7:20:43 PM   
WolverineRC



Posts: 142
Joined: 2/24/2002
From: Bellingham, WA, USA
Status: offline 		Jeff:

Put an FX 25 on that Gremlin with a Master Airscrew prop, I hear they cut plastic... er.... Streamers real good ;-)


Sorry Bud couldn't resist.


BTW: the B-2 Should be out Thursday.

(in reply to astrohog)
       Post #: 3

Fuel tank foaming/vibrating - 5/29/2002 9:46:50 PM   
JohnVH



Posts: 14767
Joined: 12/5/2001
From: Lynden, WA, USA
Status: offline 		[QUOTE]Originally posted by CPILCHARD



BTW: the B-2 Should be out Thursday. [/QUOTE]

Great! Ill bring the vid cam!

(in reply to astrohog)
       Post #: 4

Fuel tank foaming/vibrating - 5/30/2002 8:34:45 AM   
shmo46


 

Posts: 418
Joined: 1/26/2002
From: Tucson
Status: offline 		Try one of those sintered bronze filter/clunks. OS makes one called a bubbleless clunk. Dubro makes one too.

Added about 7 minutes to my flight time. Runs great till it runs dry.

_____________________________

Nobody is perfect, I am a nobody, therefore i am perfect!

(in reply to astrohog)
       Post #: 5

Fuel tank foaming/vibrating - 5/30/2002 10:02:56 AM   
JohnVH



Posts: 14767
Joined: 12/5/2001
From: Lynden, WA, USA
Status: offline 		I wonder if a BVM UAT would take care of that, sure be a good test for it!!

(in reply to astrohog)
       Post #: 6

Charles - 5/30/2002 12:36:11 PM   
dragon192



Posts: 80
Joined: 3/2/2002
From: WA
Status: offline 		Do you mean like this?
Sorry Jeff, could not resist .
[URL]http://home.earthlink.net/~cpilchard/B2/page_01.htm[/URL]

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to astrohog)
       Post #: 7

Fuel tank foaming/vibrating - 5/30/2002 5:57:35 PM   
JohnVH



Posts: 14767
Joined: 12/5/2001
From: Lynden, WA, USA
Status: offline 		Thats a dandy access setup on that one, haha

(in reply to astrohog)
       Post #: 8

Fuel tank foaming/vibrating - 5/30/2002 6:04:48 PM   
WolverineRC



Posts: 142
Joined: 2/24/2002
From: Bellingham, WA, USA
Status: offline 		I don't think that one will be foaming anymore

(in reply to astrohog)
       Post #: 9

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