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Old 02-09-2018, 09:16 PM
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I had Dubro Tygon lose the inner layer after two years. It collapsed and plugged the fuel inlet. So now I go through my planes every two years, and if I have to pull my engine in between, the line gets replaced. I started buying the blue line a year ago from taildragger and it is still plyable.
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Old 02-10-2018, 08:41 AM
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That clear blue stuff is available through outfits that deal with snowmobiles and jet skis, maybe motorcycles as well. It's used as a primer line. Though it does stay flexible for a while, it eventually will get hard as a rock. You have to slice it with a #11 or risk damaging the fitting when removing it. But you're looking at 5+ years. I use it outside the tank.
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Old 01-02-2019, 04:25 PM
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Thank for the info ,going to try drilling the back plate have the problem with air flow on my stick
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Old 01-07-2019, 05:58 PM
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1st Time gas user

This is a great thread lots of great info. I'm a first time gas user and I'm looking for pearls of wisdom. I'm putting a DLE 61 on a GP 1/3 Pitts I've had stashed away for a few years. The firewall has been updated with thicker wood where the engine mounts, triangle stock on the box both front and back. With this being my first gasser what advise can you give on mounting the engine?

Thanks
Rick
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Old 01-07-2019, 06:05 PM
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Your plane should have center lines on the firewall.Measure your center to center on the engine mounting holes. Divide that by two and that is the center between the holes.Match that center to the center of firewall marks.
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Old 01-07-2019, 06:41 PM
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Thank you that is something I didn't know.

Rick
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Old 01-20-2019, 06:57 AM
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Valach 60cc 4-stroke engine has tubing that goes from crankcase to carburetor pump. What is purpose of this?
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Old 01-20-2019, 08:09 AM
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Engine manf's have 2 options for getting a pulse signal to the pump diaphragm. One is nice and simple like the one you are talking about. The other routes the signal internally, from the crankcase to the pump diaphragm.
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Old 01-21-2019, 01:02 AM
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Quote:
Originally Posted by Truckracer View Post
As long as the fuel line continues to seal to the fittings, it should be ok for use. Just not very convenient to use that way and you donít know when a failure might occur. If it was my airplane and I valued it, I think I would consider replacing all the lines with Viton.

+1
For the minimal cost of Viton on your fuel lines you could rest easy for years.....this stuff is bullet proof with gasoline.
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Old 02-12-2019, 06:10 AM
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No metal push rods real?

I have a metal push rod on throttle and choke. Is this something I need to switch out to plastic? I assumed the possible interference would be for older fm style radios. Does it affect the 2.4 ghz as well?
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Old 02-12-2019, 07:14 AM
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Quote:
Originally Posted by rsnow View Post
+1
For the minimal cost of Viton on your fuel lines you could rest easy for years.....this stuff is bullet proof with gasoline.
+1
100% Viton on both my new EF Extra and the new filler can.
https://www.mcmaster.com/5119k41
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Old 02-12-2019, 08:50 PM
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Quote:
Originally Posted by Phil liebo View Post
I have a metal push rod on throttle and choke. Is this something I need to switch out to plastic? I assumed the possible interference would be for older fm style radios. Does it affect the 2.4 ghz as well?
I donít think itís as big of an issue anymore with 2.4. All of my gassers have a metal pushrod with 2-56 ball link ends. Never had a problem with this equipment. You do want to be sure the ignition module is as far away from your Rx as you can (I.E. the engine box assuming your Rx is under the canopy). I think Iíve seen a minimum recommended distance of 12Ē from some engine mfgís.
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Old 02-12-2019, 08:51 PM
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+1 on the Viton. Internals on the tanks get refit with the “V”.
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Old 02-13-2019, 05:25 AM
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Quote:
Originally Posted by Toothata540 View Post
I donít think itís as big of an issue anymore with 2.4. All of my gassers have a metal pushrod with 2-56 ball link ends. Never had a problem with this equipment. You do want to be sure the ignition module is as far away from your Rx as you can (I.E. the engine box assuming your Rx is under the canopy). I think Iíve seen a minimum recommended distance of 12Ē from some engine mfgís.
Thanks. I kinda figured that. Otherwise you could scrape two pieces of metal together near the Rx and see a problem. And the tail wheel has a rod that slides back and forth in a metal ring and that would be problematic as well. I did have a signal glitch at the field last week though and was wondering if that could have caused it.
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Old 02-13-2019, 02:34 PM
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2.4 radios don't glitch. They either work or they don't work at all. Just the nature of the beast. They can go into failsafe if that is setup.

I use metal pushrods all the time in various locations on various models but I always use plastic ball links on the ends. The one most important thing you need to be aware of in a gasser is to have the spark plug cap firmly seated and secure on the plug. If loose, you will have a problem. Other than that, most 2.4 equipment tolerates being mounted most anywhere in the airframe though as much spacing as possible between the ignition and receiver is always a good idea.
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