insulation
Submitted: Wednesday, Oct 25, 2006 at 13:00
ThreadID:
38808
Views:
4302
Replies:
6
FollowUps:
3
This Thread has been Archived
Member - Hurkmagurk (WA)
I have just bought a motorhome (sorry, all you dedicated 4byer's). The previous owner has fitted a nice metal toolbox on the rear for the generator and I would like to sound-proof it even more than at present. Does anyone have any ideas on insulatiion material that is good for sound,but fire-proof? (ie-not polyurethane foam!)
Reply By: Member - Andrew (QLD) - Wednesday, Oct 25, 2006 at 13:22
Wednesday, Oct 25, 2006 at 13:22
Silly question, should you really run the generator in a sound-proofed toolbox? I would have thought the majority of the noise would be from the muffler area and this needs to be outside the box (together with the air cleaner etc).
Just a simple observation. :-) I hope you enjoy the motorhome experience.....
Andrew
AnswerID:
200851
Reply By: Member - Hurkmagurk (WA) - Wednesday, Oct 25, 2006 at 13:27
Wednesday, Oct 25, 2006 at 13:27
Thanks for the good wishes Andrew.
It has actually been made for running inside the toolbox, as there is a hole for air in and exhaust out. I just thought the steel might be resonating the sound, and the it might be possible to damp it a bit. Perhaps Gyproc might do the trick?
AnswerID:
200852
Follow Up By: Member - Andrew (QLD) - Wednesday, Oct 25, 2006 at 14:38
Wednesday, Oct 25, 2006 at 14:38
Thanks for that.....actually normal Plasterboard (Gyprock etc) wouldn't probably do much....as
well as not being fireproof with its paper covering.
Since no-one else is around....might i suggest that the mounts for the generator could be worth looking at due to transmission of vibrations through them to the vehicle. The other thought might be that the enclosing of the genset may actually cause more sound (inside the vehicle) than when open due to the vibrating of the enclosed air within the toolbox.
You could try some the sound deadener used underneath vehicle floor carpets though i'm not sure of its fire properties.
Enjoy
Andrew
FollowupID:
460014
Follow Up By: Member - Max- Wednesday, Oct 25, 2006 at 15:26
Wednesday, Oct 25, 2006 at 15:26
Hi there - try a product called Proshield it is a foil backed closed cell foam you can get it in different thicknesses but 12mm should do the trick. Rolls are 1mtr. wide and buy what you want off the roll. It is a noise and heat insulation used in automotive and airconditioning industries.
Regards,
Max.
FollowupID:
460021
Reply By: ozdragon - Wednesday, Oct 25, 2006 at 15:48
Wednesday, Oct 25, 2006 at 15:48
Have a look at this. It may help.
Site Link
Peter
AnswerID:
200874
Reply By: nissnut - Wednesday, Oct 25, 2006 at 15:58
Wednesday, Oct 25, 2006 at 15:58
Hi Hurkmagurk, I used to work in the small engine industry. Most engines of this type are air cooled and although an air inlet and exhaust outlet have been provided has any consideration been given to actualy cooling the engine......regards nissnut
AnswerID:
200876
Follow Up By: Member - Hurkmagurk (WA) - Wednesday, Oct 25, 2006 at 17:56
Wednesday, Oct 25, 2006 at 17:56
Nup, but I sure will now
FollowupID:
460053
Reply By: Sand Man (SA) - Wednesday, Oct 25, 2006 at 17:59
Wednesday, Oct 25, 2006 at 17:59
Have you considered an alternative such as a 4 stroke Inverter type Genny such as the Honda Eu series or the cheaper Kirpor?
These are very quite when running and may eliminate the need for sound proofing at all.
Just thinking outside of the square.
AnswerID:
200908
Reply By: BenSpoon - Thursday, Oct 26, 2006 at 10:26
Thursday, Oct 26, 2006 at 10:26
how much room have you got?
Rockwool is the industrial choice (wool made from rock) speak to AIS (Aust Insulation supplies) They may have offcuts or something you can get, although 50mm is the usual thickness. The info on the web is for granulated- you can also get rolls.
Thinner options- Coventrys/supercheap/clark rubber for underbonnet adhesive backed closed cell foam insulation. I have seen stuff in industry that is aluminium faced as
well, but not sure where to get it- maybe blackwoods.
You can get corrugated acoustic foam from electrical suppliers (jaycar, RS etc) that handles 110 degrees, but again thats 50mm.
AnswerID:
201001