The never ending engine thread, East-West - Page 1801 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-06-2014, 01:56 PM   #18001
Dale Hunter
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Re: The never ending engine thread, East-West


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Hype wing nuts to!
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Old 12-06-2014, 01:56 PM   #18002
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Re: The never ending engine thread, East-West

Quote:
Originally Posted by Billpilotca View Post
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.
I have used felt clunks for about 2 years now. I like the fact that the felt clunk only needs to hit the fuel every few seconds to replenish the fuel absorbed onto the felt.

I even flew twice without fueling once (accident), did rolling harriers until moments before landing on that second flight. When I landed and shut the plane off there was not 3 drops of fuel left in the tank. The felt absorbed all the splashing fuel. Dano has a short vid to prove. This should have been a crashed plane for sure but the felt saved the plane. I did look at a couple carb screens and did not see any felt fibers at the carb screen. I think there is also many types of felt clunks. The type fortitude uses does not seem to allow felt fibers to go any where.

Saying that the Aeroplus tanks come with a heavy normal clunk. I carry felt clunks to put in the fuel tanks for those that like felt.

I love dales hype tank setup. He always lands with one tank completely full.
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Old 12-06-2014, 01:58 PM   #18003
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Re: The never ending engine thread, East-West

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Quality control.
(Beagle)
Looks like a gas sniffing beagle to me Dale.

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Originally Posted by Eye Can Fly View Post
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 I more consistent acrobatically!
Really I defy 98% of pilots to tell the difference CG wise. But each to his own. I can however see dual tanks to be useful with 200 cc motors and above.
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Old 12-06-2014, 02:02 PM   #18004
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Re: The never ending engine thread, East-West

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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?
I don't think a jet would ever require a felt clunk. Down lines only last for seconds and the jets have a header tank.
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Old 12-06-2014, 02:04 PM   #18005
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Re: The never ending engine thread, East-West

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Hype wing nuts to!
-Dale-
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Dale - I use nylon wrong nuts on my Suk also. I got fed up with the standard nylon bolts and put studs into the wing. I use neoprene backed washers under the nylon wing nuts and they seem to hold better - but clumsy a bit.

Do you have the studs drilled for those clips ? I learned to hate those clips when I used to fly Aeroworks all the time.
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Old 12-06-2014, 02:18 PM   #18006
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Re: The never ending engine thread, East-West

Mounting my favorite cans on my favorite motor on my favorite plane!!! Good day at the Olsen house. Maybe fly it Tomorrow
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Old 12-06-2014, 02:20 PM   #18007
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Re: The never ending engine thread, East-West

Dales Hype tanks is just a header tank set-up. While one tank empties it keeps the second tank full. Not bashing your set-up Dale I think it's a great idea!!
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Old 12-06-2014, 02:21 PM   #18008
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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
That is where a little header tank that stays full like in a heli would help.
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Old 12-06-2014, 02:34 PM   #18009
Dale Hunter
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Re: The never ending engine thread, East-West

News Flash !
Our phone can receive calls from Saskatchewan.
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Old 12-06-2014, 02:36 PM   #18010
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Re: The never ending engine thread, East-West

Ya, but as Dale gets further along in his stool flight he has to trim the plane because it keeps wanting to bank to the one side LOL!!

Wait until I do 5 tanks in series Dale!! The new hype
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