lustyd
Well-Known Member
It was mine, and it was talking about air ducting as per the thread title and the discussion throughout the thread.
securing hot air duct with plastic cable ties.....heat resistance?
- Thread starter FairweatherDave
- Start date
PaulRainbow
Well-Known Member
You must need a trip to Specsavers.
Try looking again.
Do you specifically come here to start an argument, or does it happen accidentally ?
PaulRainbow
Well-Known Member
Rappey
Well-Known Member
I looked at many forms of insulation for the ducting and exhaust and wasted a crazy amount of time researching it . Didn't want rock wool type stuff due to the fibres that could get blown around or wet.
Chose the proper eberspacher stuff in the end as it does what it's meant to and was the easiest to fit.
I was very surprised at how well the thin ducting insulation actually works and even more surprised just how well the flimsy looking sock works on the exhaust.
Chose the proper eberspacher stuff in the end as it does what it's meant to and was the easiest to fit.
I was very surprised at how well the thin ducting insulation actually works and even more surprised just how well the flimsy looking sock works on the exhaust.
lustyd
Well-Known Member
You're such a grumpy argumentative bear at the moment Paul, is everything OK at home? You've fallen out with quite a few people recently for no apparent reason. If you need help or a hug you only have to ask.
MystyBlue2
Well-Known Member
You can get stainless cable ties, Halfords sell them, Failing that a similar tie that they use for securing CV boots on car drive shafts maybe?
Stainless Steel 304 Ball Lock Cable Ties 200 x 4.6mm
Stainless Steel 304 Ball Lock Cable Ties 200 x 4.6mm
jwfrary
Well-Known Member
Had a ‘temp fix’ (over 2 years) on the landy exhaust, big cable tie in place of the mounting bracket which was no longer in existence.
On that basis I would say cable ties will easily serve the purpose of holding the ducting up.
Funnily enough the MOT guy actually noticed it was there but I suggested that as it was ‘secure’ it was fine and that’s all the guidance says. I got a frown and an MOT
.....twice
On that basis I would say cable ties will easily serve the purpose of holding the ducting up.
Funnily enough the MOT guy actually noticed it was there but I suggested that as it was ‘secure’ it was fine and that’s all the guidance says. I got a frown and an MOT
.....twiceFairweatherDave
Well-Known Member
To elaborate. I have drifted onto exhaust issues.....and have the proper sock. However this terminates at the join with the skin fitting as I have an adaptor that increases the outlet diameter for the last 3 or 4 inches. It is that that I want to hide away from stuff that may slide against it, hence the matting question. Roger's pointers look promising. On the original question of the ducting and cable ties I might wrap the ducting in the Wickes stuff and then probably use a bit of old cord, cable tie, stainless or otherwise. Once I have run the heater in real life and assessed its output I can decide next steps. More pressingly my car clutch just died on the way back from the boat yard. You think you have a car and then you don't.......put an extra tie on jwfray 
lustyd
Well-Known Member
By the way, I used the Wickes stuff to make the forward cabin warmer rather than because the duct was too hot. It was too hot, but that kept the lockers dry and warm which wasn't a bad thing 
Rappey
Well-Known Member
I have 4 outlets on a chinese "5kw" and get 100c temp of hot air at the outlet end ! Great for heating the carpet up .
lustyd
Well-Known Member
I've not tried measuring the temp but good idea. might want to turn that down a touch though!
PaulRainbow
Well-Known Member
What a strange apology, but i'll accept it anyway.
Oh, need to worry, i've not fallen out with anyone that matters, just a couple of armchair experts
lustyd
Well-Known Member
Yes you do disagree with your own advice a lot, that's true!just a couple of armchair experts
Rappey
Well-Known Member
I was just illustrating the temp involved. I wanted to use pvc drain pipe for ducting. Would be very cheap but pvc starts to melt as in gives of fumes roughly around 65c.
I Googled cable ties and they should be made from nylon 66, melting point around 250c.
Now that was suprising so cable ties should be fine for the ducting side of things.
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PaulRainbow
Well-Known Member
How old are you, five ?
lustyd
Well-Known Member
Yes a few feet along the ducts for sure, and outside the insulation probably. The metal fixings on mine in the lockers might well just be for strength in a "busy" area but they definitely feel a bit hot for zip ties to me!
lustyd
Well-Known Member
No, I'm four and three quarters. I joined the forum 6 years before I was born and somehow saved up for my yacht before I started school.
Mistroma
Well-Known Member
The factory fitted 5kW Webasto ducting on my boat is all held in place with very large cable ties and also bound to wiring. Jeanneau obviously consider it fit for purpose and I've never seen any problems even fairly close to the heater itself. I don't know if they are made from Nylon 6/6. I thought that Nylon 6/6 would withstand temperatures of up to 115°CA and standard cable ties were OK up to 85°C. I seem to remember reading that max. temp. in the ducting was about 80°C but can't remember max. at the heater itself.
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Rappey
Well-Known Member
My Googled results gave the melting point for nylon 6 about 220c and 66 at around 250c.
Whether they heat and deform at a much lower temp I've no idea.
Oven meals in plastic containers, they take up to 200c in an oven.
Quite amazing what temperatures some plastics will take.
I searched high and low to find out what sort of plastic the elbows and connectors are made from as didn't want to pay around £32 to eberspacher for a bit of plastic.
I gave up looking when the chinese elbows and vents hit ebay at a fraction of the german parts.
Whether they heat and deform at a much lower temp I've no idea.
Oven meals in plastic containers, they take up to 200c in an oven.
Quite amazing what temperatures some plastics will take.
I searched high and low to find out what sort of plastic the elbows and connectors are made from as didn't want to pay around £32 to eberspacher for a bit of plastic.
I gave up looking when the chinese elbows and vents hit ebay at a fraction of the german parts.
jwfrary
Well-Known Member
To elaborate. I have drifted onto exhaust issues.....and have the proper sock. However this terminates at the join with the skin fitting as I have an adaptor that increases the outlet diameter for the last 3 or 4 inches. It is that that I want to hide away from stuff that may slide against it, hence the matting question. Roger's pointers look promising. On the original question of the ducting and cable ties I might wrap the ducting in the Wickes stuff and then probably use a bit of old cord, cable tie, stainless or otherwise. Once I have run the heater in real life and assessed its output I can decide next steps. More pressingly my car clutch just died on the way back from the boat yard. You think you have a car and then you don't.......put an extra tie on jwfray
Cars....just trouble. It’s ok it’s has a new chassis now and most other things between the number plates!
I quite like the silicon covered sock you can get that in 50mm so will likely go over what you have. Here’s a link for an example no affiliation!
SILICONE COATED FIBREGLASS HEAT FIRE PROTECTION SLEEVING diameter 6 mm to 50 mm | eBay