Heater hose connection

[Werner]

Hello, what do you use for the hose connection between exhaust heater and heater door flange on the firewall? I hade used a concertina tube made of aluminum, that was only 500 ml airtight and is now torn through.

 

[Jacksonlll]

For years members in our club simply use a cut up pop can. Roll it up, shove it in and let it expand.

 

[Werner]

Jackson, please tell me what is a "cut up pop can"?

 

[1931 flamingo]

I'm betting a soda pop (Coca-Cola, etc) with both ends removed and then split lengthwise.
Paul in CT

 

[Jacksonlll]

That’s it Paul.

 

[CarlG]

Perfect for this application is SCAT hose, available from your local aircraft supply. Aircraft Spruce will sell short lengths in multiple sizes. It's made for hi-temp applications.

 

[Ray in La Mesa]

I used one of the small 5.5 oz. juice cans, V8, pineapple grapefruit apple, etc.

 

[taffrail]

Roofing flashing, cut to depth, roll up, insert it from the firewall door and let it unwind.
Remove with with needle nose pliers. If you screw it up no problem, make another one.

 

[Werner]

The suggestion with the lime bottle is theoretically good. But in Germany this does not work, because other plastic is used. When heated, the hose shrinks. I will therefore try the suggestion of Carl.

 

[Werner]

Today I mounted a SCAT-tube from an airplane. I will report how it works over a long time.

Thanks for all informations!

 

[daren007]

Scatt. The amount needed is too small for aircraft use. Check your local aircraft maintenance facility. They usually throw out pieces this short.