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Loud whistling from front mini heki whilst travelling.
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userrogermash
Posted: 24 June 2020 5:03 PM
Subject: Loud whistling from front mini heki whilst travelling.
 
Having a look around

Posts: 30
25
Location: Sun Living V65 SL 2018..


Well gang after your marvelous response to my last query, here is another one
Another way that Adria saves money on the Sun Living is by fitting MINI instead of MIDI heki roof lights From about 50mph onwards an unpleasant whistling noise disrupts conversation. There is no apparent air leak, and no water leaks One reason may be because the rubber seal only covers the front and back, and not the sides. The van was hired out for it's first year and I wonder if the seal was shortened in case the hirers did not open it.
I have obtained a new seal from Leisure Shop Direct, but no fitting instructions for fitting.

All help would be appreciated, Roger
usercolin
Posted: 24 June 2020 6:37 PM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 


Legendary contributor

Posts: 8132
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Location: Bedfordshire, Globecar 636SB


Don't expect any great improvement, noise from skylights is a common problem seals or no seals.
I have experimented with stuffing cushions in the skylight and it totally cuts out noise, so much so that I could hear a whistle from the door that I had never heard before! Usually I just put up with it.
userKeithl
Posted: 24 June 2020 6:39 PM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 


Lord of the posts

Posts: 5341
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Location: Birmingham. 2004 Auto-Trail Cheyenne Mercedes 313.


Could you fit a wind deflector to the roof immediately in front of the Heki?

Keith.
userDerek Uzzell
Posted: 24 June 2020 6:51 PM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 


50005000500020001000500100
Location: MODERATOR - 2015 Rapido 640F LHD 2.3ltr 150bhp


Roger

Dometic’s Mini Heki comes in two flavours, “Style” or “S”, and it sounds like you have the former.

You’ll see from ths webpage

https://www.dometic.com/en-gb/uk/products/climate/ventilation-solutions/motorhome-and-caravan-rooflights

that the “Style” rooflight can be obtained with, or without, ‘forced ventilation’, with the latter having a rubber seal all around the rooflight and the former with a seal only part way round.

If you fit the full seal, your rooflight should not whistle when your motorhome is moving but, when the rooflight is closed and the vehicle static, there’ll be no ventilation through the rooflight and the motorhome’s interior may become stuffy.

Fitting the seal should be sufficiently simple to need no instructions.
usersilverback
Posted: 24 June 2020 8:30 PM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 


Treasured contributor

Posts: 931
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Location: keighley, west yorks


to fit the seal I just used double sided tape on the seal and gently worked around the groove
Jonathan
userDerek Uzzell
Posted: 25 June 2020 7:17 AM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 


50005000500020001000500100
Location: MODERATOR - 2015 Rapido 640F LHD 2.3ltr 150bhp


The Mini-Heki “Style” model used to be called the “Plus” and Dometic provided ‘replacing the gasket ring’ guidance in this 2008 document.

http://www.swift-owners-club.com/support/oem-handbooks/dometic/repair-mini-hekiplus.pdf

I was under the impression that the rubber seal that is widely marketed would have a removable adhesive backing to stick it to the underside of the rooflight’s dome, but on-line complaints clearly indicate that’s not so. (Example here)

https://forums.motorhomefacts.com/30-parts-accessories/86675-how-fit-mini-heki-rooflight-seal.html

The 1st image attached below shows the dome with the seal all the way around the groove. The seal will need to be stuck into the groove and using a clear silicone adhesive/sealant or (as Silverback has done) double-sided tape should work OK.

It’s evident from on-line comments that a Mini-Heki may be installed with a complete dome-seal, a partial seal or no seal whatsoever. Also that, when a partial seal is fitted, its position is not standardised.

Roger has said that his Mini-Heki has a seal at the front and rear of the dome, but not at the dome’s sides, whereas my Rapido’s Mini-Heki has the seal across the front of the dome and (from the front) half way up each side, with no seal in the remainder of the dome’s groove (which would seem to make better sense for ‘partial sealing'). It perhaps needs adding that the Rapido’s Mini-Heki rooflight is over the motorhome’s bed that is well to the rear of the vehicle - so if the rooflight whistled while travelling it’s unlikely I’d hear this.

I did notice that, when the operating-handle of my Rapido’s Mini-Heki rooflight was in its closed position, it was less ‘tight’ than I liked. I’ve addressed this by gluing a short piece of white plastic tube around the handle where arrowed in the 2nd image below.



(mini heki seal.jpg)



(handle.png)



Attachments
----------------
Attachments mini heki seal.jpg (12KB - 5 downloads)
Attachments handle.png (163KB - 4 downloads)
usergoldi
Posted: 25 June 2020 8:06 AM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 
Has lots to offer

Posts: 418
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Location: west yorkshire globecar family scout l


Good morning,

Mine is a globecar with a midi heki, When I first got it I replaced seals twice , also spent about 700 pounds on new before finally giving up and getting some noise insulating foam and a blank to put behind the sliding screen screen. I also tried two different wind deflectors. I put it all down to the location with relation to front aerodynamics. I might also add that We had an Adria twin before with no problems.

Edited by goldi 2020-06-25 8:07 AM
userrogermash
Posted: 25 June 2020 11:03 AM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 
Having a look around

Posts: 30
25
Location: Sun Living V65 SL 2018..


Well, once again I'm in debt to you all. I have enough knowledge to cure it now. My previous van a 2007 Adria Twin had no problem had no problems with noise,from the heki just water leaks. I had that changed for a new one and that came with added noise.I might have tried to cure that, but the next visit to body shop regarding rust and a large bill sorted that. When you are told to change vans you' do!
Thanks very much, Roger
userbaden87
Posted: 29 June 2020 5:45 PM
Subject: RE: Loud whistling from front mini heki whilst travelling.
 
Gets involved

Posts: 231
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Location: Autotrail Apache 2019


Turn Radio up
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