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    Thread: TATA Indica V2 ICE Build Log

    1. #1

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      TATA Indica V2 ICE Build Log

      I was spending a lot of time over what to do for damping material. The choice was numerous from branded items like dynamat, our own monty's Dampmat, wuerth sheets, noisekiller and more. The cheapest option was tar felt sheets available in hardware shops.

      However I was apprehensive in using any kind of asphalt (bitumen based) materials in the inner areas of the car, be if floor / door or the boot.

      Anything I touched upon, read upon or was advised was based on asphalt. Asphalt inherently has carcinogenic properties, yes all our roads are based on tar but I did not want to compromise.

      More reading brought me to two more materials. Wool felt and super compressed synthetic foam.

      Both provide for excellent acoustic insulation and wool felt is used in speaker enclosures of leading audiophile brands.
      How the insulation works is, the fibres in the compressed wool-felt trap sound and convert it to heat.

      So the hunt began for wool felt sheets and to my surprise I found a dealer in Broadway.

      I made a visit and he had many varieties and colours ranging from thickness of 3 mm sheets to 12 mm sheets. To my surprise I also saw that he was selling aluminium sheets.
      The density of 3mm sheet is roughly 0.25sg.

      The felt sheets were 6 feet wide and aluminium sheets were 5 feet wide.
      I bought 72 sq.ft (6 ft x 12 ft) of 3 mm felt sheet and 75 sq.ft (5 ft x 15 ft) of aluminium sheet.

      Total cost Rs. 2000 for 75 sq.ft of material. Glue, Fevicol Sr998 2kgs: Rs. 650.

      Bitumen based dampeners like dynamat reflect sound while wool felt sheets absorb sound and convert it to heat. The aluminium foil will help in absorbing this heat.
      Some other Dynamat materials like dynaliner and dynapad which are used in vehicle floors add weight and absorb road noise and rattles.

      I fell short of the aluminium foil and will have to do another trip to Broadway to buy more. I might put two layers of felt sheet for floor to add more weight.

      I hope it works and helps in reducing vehicle and outside noise as well as rattles, at least to some extent.

      Now I wonder if any ICE guy in Chennai will be willing to do the dampening with this stuff or I will have to do it myself with the help of my car mechanic.

      Here are some pictures of the materials I bought. I stuck the aluminium foil to the felt sheet using Fevicol SR998.

      The felt sheet
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      Aluminium foil
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      Glue and metal sheet to apply

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      Felt sheet with adhesive
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      Pasting aluminium foil on felt sheet
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      Job complete
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      Last edited by bamaboy; 21st Sep 2013 at 14:58. Reason: Thread title edited on the request of OP

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      Quote Originally Posted by gkannan View Post
      However I was apprehensive in using any kind of asphalt (bitumen based) materials in the inner areas of the car, be if floor / door or the boot.

      Anything I touched upon, read upon or was advised was based on asphalt. Asphalt inherently has carcinogenic properties, yes all our roads are based on tar but I did not want to compromise.
      The Bitumen or Tar-felt sheets used in Damping materials or Waterproofing sheets is derived from the distillation of crude oil. Its completely non carcinogenic.
      Coal Tar on the other hand is carcinogenic.

      Bitumen & Health FAQs
      1. What is the difference between Hazard and Risk?
      “Hazard” and “Risk” have very different meanings. See how they differ by clicking here.
      2. What is bitumen?
      Bitumen is a virtually non-volatile, adhesive and waterproofing material derived from the distillation of crude oil. It is produced by removing the lighter fractions from heavy crude oil during the refining process and is very viscous, almost solid, at ambient temperatures.

      3. Is there a difference between bitumen and coal tar (or tar sands)?
      Yes there is.
      Bitumen is distilled from crude oil and is very different from coal tar, which is derived from processing (pyrolysis) of coal at very high temperatures. Coal tar was used for road building and water proofing, but was replaced by bitumen during the 1950s.
      Although similar in appearance, the chemical composition of coal tar is very different from bitumen, as is the nature of hazard that coal tar presents to the user: coal tar is classified as carcinogenic, whereas bitumen is not.
      [Tar sands - also known as cold oil sands or bitumen sands - contain naturally occurring heavy crude oil, which is a very different substance to bitumen.]
      4. Should the general public be concerned about any hazards from bitumen?
      No. Bitumen in use, for example, on roads, roofs or pavements, are inert and do not present any known health or environmental hazard.
      5. And what about those who work with bitumen?
      Bitumen is normally manufactured, stored, transported and handled hot. Hence the most significant hazard to workers from hot bitumen is the potential to cause burns.
      Bitumen is usually applied hot. Hot bitumen gives off fumes, which can cause respiratory tract or eye irritation. Apart from this temporary irritation, under normal conditions there is no evidence that working with bitumen is hazardous to worker health. The risk of exposure to this hazard - and, therefore, the potential health impact on workers - is minimised through good temperature control, working practices and appropriate workwear.
      Source : http://www.eurobitume.eu/bitumen-health-faqs

      Quote Originally Posted by gkannan View Post
      Both provide for excellent acoustic insulation and wool felt is used in speaker enclosures of leading audiophile brands.
      How the insulation works is, the fibres in the compressed wool-felt trap sound and convert it to heat.
      +1.
      Quote Originally Posted by gkannan View Post
      Bitumen based dampeners like dynamat reflect sound while wool felt sheets absorb sound and convert it to heat. The aluminium foil will help in absorbing this heat.
      Some other Dynamat materials like dynaliner and dynapad which are used in vehicle floors add weight and absorb road noise and rattles.

      I fell short of the aluminium foil and will have to do another trip to Broadway to buy more. I might put two layers of felt sheet for floor to add more weight.
      My two cents : Don't use Aluminium layered wool felt sheet behind the speaker. Simply apply the wool felt sheet without the Aluminium layer. Its the Aluminium layer which reflects back waves behind the speakers and considerably reduce the Midbass attack.
      Last edited by bamaboy; 5th Sep 2013 at 21:56.
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      Thanks bamaboy

      Quote Originally Posted by bamaboy View Post
      The Bitumen or Tar-felt sheets used in Damping materials or Waterproofing sheets is derived from the distillation of crude oil. Its completely non carcinogenic.
      Coal Tar on the other hand is carcinogenic.
      I agree to some extent, but there are two sides to the coin. I will just leave it at that.

      Quote Originally Posted by bamaboy View Post
      My two cents : Don't use Aluminium layered wool felt sheet behind the speaker. Simply apply the wool felt sheet without the Aluminium layer. Its the Aluminium layer which reflects back waves behind the speakers and considerably reduce the Midbass attack.
      Thanks, that sounds logical and makes a lot of sense.

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      Wouldn't wool felt absorb water?

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      Quote Originally Posted by archat68 View Post
      Wouldn't wool felt absorb water?
      Yes, but it will dry off too unless of course it gets soaked which ideally should not happen within the car.

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      gkannan Very intriguing and interesting. Kudos to your effort. Are you planning to stick the sheet over floor panel only? What about your door panels?

      Not sure if Power Zone would be willing to carry out this job? Tagging power zone agent matbhuvi

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      Quote Originally Posted by keerthi View Post
      gkannan Very intriguing and interesting. Kudos to your effort. Are you planning to stick the sheet over floor panel only? What about your door panels?
      The floor with my service guy as it involves lots of dismantling and and re-assembling work. Rear doors and boot probably DIY. Front doors at the time of fixing the components with the hope that the ICE guy agrees to use this item.

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      Quote Originally Posted by keerthi View Post
      Not sure if Power Zone would be willing to carry out this job? Tagging power zone agent matbhuvi
      Why not? Just call him and check with him
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      Vehicle left with Speedfreaks yesterday for ICE installation.

      Head Unit: Pioneer deh-80prs
      Amplifier: PHD 4075 4-channel
      Components: Focal 165 V30
      Subwoofer: 12inch Pioneer TS-W306c
      Car: Tata Indica v2 petrol
      Felt damping for floor, tradional damping for front doors and boot.

      Passive setup for the time being. Time for installation about 3 days.

      I don't have time to sit through the installation. However have requested Karthick of Speedfreaks to provide for some photos of his work on my car. Will try and post as and when it is available.

      Keeping fingers crossed!

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      Congrats on the DIY damping material gkannan. I would be watching this space to read about the progress. Do make it to chennai meets that happen. Would love to audition your setup with this Damping material in place.

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