Lead sheets for sale on e-bay item # 320214851246 due in a coupl of hours. Thought someone might be able to use them. No connection just trying to help.
Pardon my ignorance but does one sheet cost $364.00?
Pardon mine too, however what would a busnut do with a sheet of lead?
Jack
Jack, you install it above the engine in the bedroom if you have a rear bedroom cuts out the engine noise its a great sound barrier
not to mention (1) it'll protect you from radiation! LOL! & (2) it'll provide more weight on the drives for traction ;D
;D BK ;D
Can line the entire bedroom with it to protect against voyeurs with xray vision. That is, if you are not too old for it to matter.
My 06 was professionaly converted in the 70s and all flooring was underlined with lead, thats the way it was done in those days and very effective to, both heat and noise is reduced. Its about i/8 inch and runs front to back.>>>Dan
Forgot to mention my 06 weighs 24400 full up ready to go.>>>Dan
Several of us have used lead sheet sandwiched between plywood for our generator enclosures. The lead helps deaden the sound - same as over the engine.
Price of lead has really gone up lately (along with most of the metals we all use).
Jim
claimjumper lead sheets are in use today by converters.I did not know its been in use since the 70s bet thats 1 quite ride with lead sheets from front to back
The price seems to be out of line. He is starting the bidding at $2.00/pound and the price for lead on the LME is $1.30/pound and the bid price for scrap lead is .85/pound in the US.
I would not use lead. Lead is a hazardous material and is hard to isolate in the building process. Lead is greasy to the touch and will spread through out your coach and clothing. If you use lead, get the grandkids tested when they start having tremors and be prepared for a lengthly recovery period away from the contamination.
The 98 Prevost H3-45VIP I gutted last year had lead sheets under the entire floor. It was the material between the frame and first layer of 3/4 inch plywood, which there was 2 layers, lapped and rotated. Very nice.
Don't know if they still use it, but I haven't seen it in their seated coaches.
Just to be a trouble maker, I am going to wrap my lead in asbestos and live longer than all of you.
Be aware, but be practical, they have their uses and have no equal replacements. They will always make lead and they will always make asbestos (yes it is still being made for special uses); till some one invents something better to replace it.
Ray D
I was thinking that lead sheets might be good for in the back and above the genset but I was afraid of A: cost B: Weight and C: lead poisoning, of course you wouldn't be able to tell with me. ;D
Isn't there another effective alternative?
-Dave
lots and lots of alternatives.....most from the marine or Aerospace industry
where light Weight is a key factor
someone I met at bussing 08, advised the bubble wrap foil rolls under ply sub flooring works well????
I would be surprised if bubble wrap would do much.
For those designing their generator compartment -
To reduce sound, the theory is to reduce the low frequencies with mass (lead or other) and the high frequencies with a soft material. The auto industry uses a hard dense rubber material and a felt material on the front of dash and some floor pans.
When I constructed my generator box in my MCI 8, I used the following materials from outside to inside - particle board (next time I would use wolmanized plywood for better moisture acceptance), 1/8" heavy black rubber product (like horse stall material), fiberglass ceiling sheets (or waffle rubber). The other design element to incorporate is to duct the air so the sound waves are absorbed instead of going straight out or bounce on hard surfaces.
BTW, this installation in the MCI 8 was much quieter than my current coach with a professional installation.
Ed Roelle
Flint, MI
I have had very good results with a sound deadening product call DynaMat. I always used it with subs for large stereo systems but it deadens noise and vibrations amazingly well. They have multiple types ie with foil, thicknesses, etc. Its pretty pricy but for a generator area or over and engine compartment I think it would work very well.
So,
If I have 1/8 th inch thick lead, Polyisoc. foam insulation, Plywood sheeting, 1/4 inch rubber mat from tires. What would be the order of installation? How thick for each/the plywood sheet? How thick for the/each poly sheet. Adhesives? Fastening? Rubber too much?
This would be the ultimate, right?
Thanks for taking the time,
John
Trevor, although Dynamat is an OK product it pails in comparison to the marine stuff used for Generator and Engine room Apllications.
Can't think of the product name right now....if you do a search It will come up in the archives.
I have seen real life comparisons of this stuff......the online digital sound comparison is very representative of real life.
http://www.glacierbay.com/insulation_ultradb.asp
Google 'Soundown" They manufacture a veriety of sound reduction materials. Jack