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Posted
  On 11/07/2024 at 7:44 PM, Red said:

Brendan, what is that black round thing with a rod or tube sticking out of its centre that appears to be directly behind the air filter element?

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It's a hose. I forget what it's there for. Will have a look when I get home and let you know.

  • Like 1
Posted
  On 11/07/2024 at 7:53 PM, BrendAn said:

It's a hose. I forget what it's there for. Will have a look when I get home and let you know.

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Crankcase breather to stop the skins getting oil soaked? 

  • Like 2
Posted
  On 11/07/2024 at 9:54 PM, Thruster88 said:

Crankcase breather to stop the skins getting oil soaked? 

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crank breather runs to catch can. i did trace that hose on the airfilter but i forget what it was for. will check tomorrow

  • Like 1
Posted
  On 12/07/2024 at 1:35 AM, spacesailor said:

Aren't those airfilters supposed to be oiled . Likewise the foam filters .

spacesailor

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Yes both types should be oiled

  • Like 1
Posted
  On 12/07/2024 at 1:47 AM, BrendAn said:

crank breather runs to catch can. i did trace that hose on the airfilter but i forget what it was for. will check tomorrow

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Does it actually go into the filter?, perhaps

a makeshift primer?

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Posted

Breather grundge shouldn't go into an aeromotor intake. It'll pug up your intake ports and ring grooves. Nev

  • Like 1
Posted

There's no point in oiling those coarse plug filters. They are not efficient whatever you do with them..  They have an insignificant area.   Most planes have NO airfilter. Dust in the anti icing section is a risk to engine health.. If you fly in a dust storm prepare for a wrecked engine.  Don't do it. Nev

  • Like 1
Posted

I have yet to see a piston engine aircraft without a filter. The turbine Airtractor aircraft most definitely have filters.

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Posted (edited)

They need them with all the dust.. . Some turbines have to be regularly washed out to Maintain performance.. I don't know any large radial that has any filter. A damaged (or blocked) filter wouldn't help the engine. Alcohol Spray is used as an anti and deicing procedure in the intakes and that is not compatible with a fine filter. They are fitted to the lycoming continental jiggers but they have to be regularly serviced and don't usually fly in torrential rain and icing conditions. Impact ice (Rhime) can block them.. The carb heat bypasses them. Nev

Edited by facthunter
clarity
  • Like 1
Posted (edited)

We only look after one radial, a Beaver, it has a filter.

 

All the certified aircraft have an alternative air supply, carb heat or a spring loaded opening. 

Edited by Thruster88
  • Informative 1
Posted
  On 12/07/2024 at 7:04 AM, facthunter said:

Breather grundge shouldn't go into an aeromotor intake. It'll pug up your intake ports and ring grooves. Nev

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I didnt mean the breather if that was directed at me (its hard to tell who you are replying to as you never use the quote function)

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Posted
  On 12/07/2024 at 5:41 AM, Red said:

Does it actually go into the filter?, perhaps

a makeshift primer?

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I will be looking at in the morning.

Posted

No I think the quote function can alter meanings. I sometimes NAME the person, IF it' s specific If it's a general statement I don't bother, because it's general.  Nev

  • Like 1
Posted

The hose must be for carb vacuum or maybe a vent ?. It just loops over to a nipple on the carby.

IMG20240713140153.jpg

Posted

And how does this carb heat work.does it just warm the body of the carb. Its a flat plate with 2 wires attached to it.

IMG20240713140232.jpg

IMG20240713140225.jpg

Posted
  On 13/07/2024 at 5:20 AM, BrendAn said:

The hose must be for carb vacuum or maybe a vent ?. It just loops over to a nipple on the carby.

IMG20240713140153.jpg

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It likly the carburettor float bowl breather/overflow.  Its supposed to terminate in an area of  atmospheric  pressure thats the same as the carburettor air intake. 

  • Informative 1
Posted

Venting it in the wrong place makes the mixture go for a Whoopsie. Bit of a trap for young players .  Nev       

  • Like 1
Posted
  On 13/07/2024 at 6:17 AM, skippydiesel said:

It likly the carburettor float bowl breather/overflow.  Its supposed to terminate in an area of  atmospheric  pressure thats the same as the carburettor air intake. 

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Seeing the pictures that's exactly what it is, I have done the same except with a shorter hose that enters the opposit end of the filter near the carb throat avoiding the loop...does the same thing

  • Informative 2
Posted (edited)
  On 13/07/2024 at 5:22 AM, BrendAn said:

And how does this carb heat work.does it just warm the body of the carb. Its a flat plate with 2 wires attached to it.

IMG20240713140232.jpg

IMG20240713140225.jpg

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Yea they are just a resistor that affixs to carb body near the area where the butterfly is located, as much use as a chocolate teapot imo

Edited by Red
  • Informative 1
Posted

Put a temp sensor there and you don't have to guess if you're safe. Long intake manifolds are bad for icing. Actually good for icing but BAD for you.. Don't forget you can get icing in ambients of 26 c.. but unlikely at  the south pole.  Hands up if you know why that is.   Nev

  • Informative 1
Posted
  On 13/07/2024 at 6:27 AM, facthunter said:

Venting it in the wrong place makes the mixture go for a Whoopsie. Bit of a trap for young players .  Nev       

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I got caught with a 582 once. They have a vent hose connected to both carbs. I noticed 3 pinholes in the hose so I put a new piece of hose on. Pushed fuel out of both carbs when I started it. Then I realised it was a vent. 😁

  • Like 1
  • Informative 1
Posted
  On 13/07/2024 at 7:05 AM, facthunter said:

Put a temp sensor there and you don't have to guess if you're safe. Long intake manifolds are bad for icing. Actually good for icing but BAD for you.. Don't forget you can get icing in ambients of 26 c.. but unlikely at  the south pole.  Hands up if you know why that is.   Nev

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Because the air is dry at the south pole ?

  • Agree 2

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