The never ending engine thread, East-West - Page 1800 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-06-2014, 10:37 AM   #17991
Lorne @ Pro-RC.ca
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Re: The never ending engine thread, East-West


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So how many did you bring in Lorne?
Just one of these and one of the 91" mxr.
I made a deal with them to sell them and direct ship from china because they have so many color choices.
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Old 12-06-2014, 10:38 AM   #17992
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Re: The never ending engine thread, East-West

The reason I use felt clunks
http://www.flyinggiants.com/forums/s...=3#post2217051

The clunk is out of the fuel about 10% of the flight on this test. Crazy
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Old 12-06-2014, 11:59 AM   #17993
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Re: The never ending engine thread, East-West

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Just an observation with the intent of being helpful - many of the guys with larger engines have gone away from felt clunks. In some cases they cause inconsistent idle and are not necessary for downlines (at idle or low throttle) that only last 3-5 seconds. Personally I used to use the walbro felt clunks but ran into some crazy idle issues on a large gasser that seemingly were cured when I got rid of the felt clunk.

Keep in mind there is also another screen buried under the felt. It can sometimes clog and some people seem to blame the fibres from the clunk plugging up passages in the carb. If you double filter your gas (i.e. air stone type pickup in the gas can and then another in-line filter in the fill line) you don't need the filtering of the felt clunk and it can potentially cause problems. Perhaps if you replace the felt clunk every year you can reduce any issues.

Now - having said all this - if you ask 10 guys you will get likely get three different answers or opinions. I know when some of the top aerobatic guys around here found out I was using a felt clunk they told me emphatically to "get rid of the damn thing".

Only mentioning this to add to the usual confusion of what is best or not. Other opinions will no doubt conflict with what I said.
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Old 12-06-2014, 12:12 PM   #17994
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Re: The never ending engine thread, East-West

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Originally Posted by Lorne @ Pro-RC.ca View Post
The reason I use felt clunks
http://www.flyinggiants.com/forums/s...=3#post2217051

The clunk is out of the fuel about 10% of the flight on this test. Crazy
If I understand it correctly most North American jet guys have gone away from felt clunks in favor of regular heavy clunks for a number of reasons (felt debris?) (Europeans still seem to like them though).....but we always use UAT's (header tanks without pickups) so it's really not an issue as far as the clunk drawing a bit of air from time to time in the main tank....I really don't understand how a felt clunk will prevent what we seen in the video anyway?
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Old 12-06-2014, 12:25 PM   #17995
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Re: The never ending engine thread, East-West

Mr. Hunter has come up with a goof-proof way to eliminate the air issue. And if you use a in-line paper element filter on the out side of your filler pump there isn't a lot of need to put filter devices in your tank(s) HINT!!!

I'm sure Dale can elaborate on his tank system.....
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Old 12-06-2014, 12:38 PM   #17996
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Re: The never ending engine thread, East-West

I put a loop in my feed line
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Old 12-06-2014, 12:46 PM   #17997
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Re: The never ending engine thread, East-West

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Originally Posted by Eye Can Fly View Post
Mr. Hunter has come up with a goof-proof way to eliminate the air issue. And if you use a in-line paper element filter on the out side of your filler pump there isn't a lot of need to put filter devices in your tank(s) HINT!!!

I'm sure Dale can elaborate on his tank system.....
Quality control.
(Beagle)
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Old 12-06-2014, 12:51 PM   #17998
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Re: The never ending engine thread, East-West

The other benefit of how Dale does it is the tanks can be situated in relationship to the CG ,so when full the plane is balanced better when filled to the brim. Call it more consistent acrobatically!
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Old 12-06-2014, 12:54 PM   #17999
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Re: The never ending engine thread, East-West

Hype Tanks.
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Old 12-06-2014, 12:55 PM   #18000
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Re: The never ending engine thread, East-West

18,000
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