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Vent tubing routing question

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Old 03-27-2014, 07:31 PM
  #1  
TPL33
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Default Vent tubing routing question

I've got my vent tube coming out the bottom of a cowl, under the muffler, then attached to the muffler. I really don't like this set up because you can see the tubing and would prefer it be hidden. The other option would be to come down from above the muffler (not around it and under) but the tubing would rest on/touch the muffler. Would it hurt the vent tube in any way to have it on the muffler? Would it melt/damage the tubing or cause a vapor lock? Thanks in advance.
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Old 03-27-2014, 08:09 PM
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speedracerntrixie
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Glow engine, no nothing gets hot enough to melt silicon tubing. Gas engine, it could be an issue as the mufflers can get hot enough to melt Tygon tubing that is commonly used.
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Old 03-28-2014, 03:05 AM
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Rudolph Hart
 
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You could use a straight piece of soft ally tubing on the outside of the cowl,large enough to poke a short length of silicone vent tubing into.Bend it any way you like.
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Old 03-28-2014, 04:33 AM
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I have a gasser that the vent tube drops into the cannister tunnel from above. Wraps around the cannister but doesn't touch it then out the bottom a couple of inches. I use glue on wire supports to keep the vent line off of the cannister muffler.
Youre going to want your vent line out of the cowl
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Old 03-28-2014, 05:21 AM
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Hi mate,i like to keep the vent line as close to the prop as i can,the model ends up cleaner after a flight.You can easily funnel a silicone fuel line straight into an old 35mm film canister inside the cowl no worries.
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