Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 | 3
kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2058684 19-Jul-2018 10:17
Send private message

Does anyone know which would give me a smoother rectangular curve in a type space

 

Rigiflex:

 

https://smooth-air.co.nz/images/stories/products/pdfs/2595.pdf

 

Un-insulated flex:

 

https://smooth-air.co.nz/images/stories/products/pdfs/2593.pdf

 

My plan is to use a reducer to go from 200 -> 250 duct then make a rectangular template 300 x 90, put that inside the tube and deform about 50cm of tube into a rectangular shape, then pull it through the gap, then once out the soffit change about 20cm length into a gradual curve again and attach that to a vent.

 

.

 

.

 

.

 

PS (In case you suggest the following)...

 

You can buy a 220x90 mm rectanguar duct with adapter to 150mm, the problem is I can't get this into position, so it's not an option.

 

 

^ to get this device into position it would need to fit through a 150mm round hole in the soffit or a 350x100mm gap in the attic framing, which is not possible.





HTPC / Home automation (home assistant) enthusiast.


 
 
 

Trade NZ and US shares and funds with Sharesies (affiliate link).
nickb800
2699 posts

Uber Geek

Trusted

  #2058689 19-Jul-2018 10:25
Send private message

The full flexible ducting has steel spring wire, so will spring back to ciruclar shape after you try to form it with your rectangular template. The semi-rigid duct probably would retain the rectangular shape, but it would be incredibly difficult to achieve without making a complete hash - crushing or tearing the tube. You would certainly need extra for practice!

 

I think you are going to have to accept reduced airflow or cutting large holes in the interior ceiling and soffit. Are you sure that the smooth-air adapter DPab229 wouldn't fit? Even if you have to go down in ducting size, say 60x204, the PVC duct has a smooth surface so air will flow more easily than a flexible duct of equivalent cross-section.


nickb800
2699 posts

Uber Geek

Trusted

  #2058694 19-Jul-2018 10:28
Send private message

Presumably that adapter would fit on the rangehood end, just not the soffit end? What if you used something like the Smooth Air VE8282 on the soffit end, and had a rectangular outlet instead of converting it to a normal circular outlet?




nickb800
2699 posts

Uber Geek

Trusted

  #2058696 19-Jul-2018 10:29
Send private message

Or if you're really stuck, do something yucky like chop one of those adapters in half to get it through the narrow gap, and tape it back together with aluminium foil tape.


kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2058697 19-Jul-2018 10:30
Send private message

is there a external vent that can attach directly to 220x90 pvc duct?





HTPC / Home automation (home assistant) enthusiast.


kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2058698 19-Jul-2018 10:31
Send private message

nickb800:

 

Or if you're really stuck, do something yucky like chop one of those adapters in half to get it through the narrow gap, and tape it back together with aluminium foil tape.

 

 

not a bad idea.

 

I get what you are saying actually if the flexible duct surface through the deformed part isn't nice and smooth even if the cross sectional area is larger the flow will be buggered.





HTPC / Home automation (home assistant) enthusiast.


nickb800
2699 posts

Uber Geek

Trusted

  #2058702 19-Jul-2018 10:43
Send private message

kiwijunglist:

 

is there a external vent that can attach directly to 220x90 pvc duct?

 

 

Sounds like the external vent is the least of your worries lol

 

But seriously, I can't see anything from Smooth Air or Simx, but I bet if you went into their stores you could find something that would be a close enough match that you could bridge the gap with aluminium foil tape.




rkl

rkl
11 posts

Geek


  #2597195 3-Nov-2020 18:04
Send private message

Holy thread revival batman!
I'm in the same boat, need to run 200mm duct to a soffit it little access.
What did you end up doing?
Anyone in this thread put a duct through a concrete tile roof, im pretty handy DIY, just unsure with how steep the roof is.

kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2597205 3-Nov-2020 18:20
Send private message

I did it all myself.



I rounded the edge of the 4x2 slightly in the narrow gap. I compressed the ducting so it was a tiny bit oval / rectangular shape where it passed through the narrow area. The metal spiral was able to hold the shape. I did gradual transition in the shape of the tube.

I exited out the soffit




HTPC / Home automation (home assistant) enthusiast.


MikeAqua
7671 posts

Uber Geek


  #2597433 4-Nov-2020 10:00
Send private message

kiwijunglist: I did it all myself.


I rounded the edge of the 4x2 slightly in the narrow gap. I compressed the ducting so it was a tiny bit oval / rectangular shape where it passed through the narrow area. The metal spiral was able to hold the shape. I did gradual transition in the shape of the tube.

I exited out the soffit

 

How have you found the performance of the extractor?





Mike


kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2597757 4-Nov-2020 17:34
Send private message

Very good




HTPC / Home automation (home assistant) enthusiast.


Danite
35 posts

Geek


  #2597887 4-Nov-2020 22:04
Send private message

You could have also split it into 2x150mm and had two vents?

kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2597974 5-Nov-2020 06:33
Send private message

Yup that's what I almost did but when I rounded off the edge of the 4x2 above and below it was squeezing through it gave another 3-4cm and I decided to just leave it at 200mm with a slight squeeze.




HTPC / Home automation (home assistant) enthusiast.


rkl

rkl
11 posts

Geek


  #2598034 5-Nov-2020 08:11
Send private message

Sweet thanks, might get back in there and see if I can do the same. Have got some guys coming out to quote to install the whole system through the roof. Might not be too much more to do that. Looking at $2-300 in parts alone for all the ducting, etc


kiwijunglist

2969 posts

Uber Geek

ID Verified

  #2598157 5-Nov-2020 10:25
Send private message

$300 sounds like heaps. Duct should be $50-100 and vent should be $25-50.




HTPC / Home automation (home assistant) enthusiast.


1 | 2 | 3
View this topic in a long page with up to 500 replies per page Create new topic





News and reviews »

HP Unveils Broadest Consumer Portfolio of AI-Enhanced Laptops
Posted 3-Mar-2024 18:09


Samsung Tab S9 FE Review
Posted 3-Mar-2024 18:00


Norton Genie Review
Posted 3-Mar-2024 17:57


Synology Introduces BeeStation
Posted 23-Feb-2024 14:14


New One UI 6.1 Update Brings Galaxy AI to More Galaxy Devices
Posted 23-Feb-2024 10:50


Amazon Echo Hub Available in New Zealand
Posted 23-Feb-2024 10:40


InternetNZ Releases Internet Insights 2023
Posted 20-Feb-2024 10:31


Seagate Adds 24TB IronWolf Pro Hard Drives for Multi-user Commercial and Enterprise RAID Storage Solutions
Posted 19-Feb-2024 16:54


Seagate Skyhawk AI 24TB Elevates Edge Security Capacity and Performance
Posted 9-Feb-2024 17:18


GoPro Releases Quik Desktop App for macOS and Introduces Premium+ Subscription Tier
Posted 9-Feb-2024 17:14


Ring Introduces New Ring Battery Video Doorbell Pro
Posted 9-Feb-2024 16:51


Galaxy AI Transforms the new Galaxy S24 Series
Posted 18-Jan-2024 07:00


D-Link launches AI-Powered Aquila Pro M30 Wi-Fi 6 Mesh Systems
Posted 17-Jan-2024 20:02


Newest LG 4K Lifestyle Projector Doubles as Art Objet
Posted 9-Jan-2024 15:50


More LG Smart TV Owners Set To Enjoy the Latest webOS Upgrade
Posted 9-Jan-2024 15:45









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.







GoodSync is the easiest file sync and backup for Windows and Mac