[DeTomaso] Fwd: Re: dyna mat

jderyke at aol.com jderyke at aol.com
Mon May 25 02:30:06 EDT 2020 

Dave & others, be very careful of gluing anything inside the doors that can catch & hold rainwater. DeTomaso did this on Mangusta doors to help silence the cabin, and the insulation soaked up and held rainwater that ran down the windows past the cat-whiskers. It's a rare Mangusta that has intact OEM door bottoms- most are/were rusted out. Ford & DeTomaso left that innovation out of Panteras and it may not have been just cost.  Dunno about Dynamat's water-absorbency. 
 Cheers- J DeRyke
 
 
-----Original Message-----
From: Dave Londry <davel at trguys.com>
To: detomasolist <detomaso at server.detomasolist.com>
Sent: Sun, May 24, 2020 6:07 pm
Subject: [DeTomaso] Fwd: Re: dyna mat

  Very true - I was just afraid of getting into anti-nodes and poles and
  zeros etc.
  On 2020-05-24 12:59 p.m., John Maloney wrote:

  Dave,


  Your e-mail on Dynamat is excellent.  However, what you refer to as
  nodes are called anti-nodes.  Nodes are points at which there is no
  motion in that mode of vibration.


  John #3269

  Retired Structural Dynamist


  Sent from [1]Mail for Windows 10


  From: [2]Dave Londry
  Sent: Sunday, May 24, 2020 12:32 PM
  To: [3]detomaso at server.detomasolist.com
  Subject: Re: [DeTomaso] dyna mat


  Our good buddy with the Mangusta (factory small-block chevy), Dick

  Ruzzin, gave me a great lesson on placing sound deadening material.


  The point is to locate the Dynamat at the nodes (places where the

  vibration amplitide is greatest) and just enough of it to 'kill the
  buzz'.

  It all takes some messing around, like driving around with no door

  panels installed and nothing on the inner roof.

  And, the pressure of a one thumb in the right place will simply kill
  one

  vibration mode.


  I got the doors well with one 3"x 8" piece horizontally in the middle
  of

  each door.

  I needed to drive the car over to Detroit to have the master do the

  roof, but that would be 2500 miles each way.

  On my own I did get it well damped, with four 6" x  6" pieces spread in

  a square, but I know he'd have used much less.

  The roof had about 4 modes that I kept chasing around for several hours

  until i just threw extra material at them.

  Dave


  On 2020-05-23 10:20 a.m., David wrote:

  >    Mr. Finch,

  >

  >

  >    As an experiment I used a "dyna mat" type product on the ceiling
  of my

  >    hot rod truck when I had the headliner (a piece of card board)
  out.

  >    Poo, can't find the video comparison . . . .

  >

  >

  >    You don't need to cover every inch, just a piece across the roof,
  you

  >    will be amazed. My old truck lives outside, the stuff never comes
  off.

  >

  >

  >    David in Durango

  >

  >

  > _______________________________________________

  >

  >

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  or approve the archiving of list messages.


  --

  Dave Londry

  TRGuys.com


  [6]davel at trguys.com

  Cell    604-721-2278

  Skype    embeddedspaces



--
Dave Londry
TRGuys.com

[7]davel at trguys.com
Cell    604-721-2278
Skype    embeddedspaces

References

  1. https://go.microsoft.com/fwlink/?LinkId=550986
  2. mailto:davel at trguys.com
  3. mailto:detomaso at server.detomasolist.com
  4. mailto:DeTomaso at server.detomasolist.com
  5. http://server.detomasolist.com/mailman/listinfo/detomaso
  6. mailto:davel at trguys.com
  7. mailto:davel at trguys.com
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-------------- next part --------------
   Dave & others, be very careful of gluing anything inside the doors that
   can catch & hold rainwater. DeTomaso did this on Mangusta doors to help
   silence the cabin, and the insulation soaked up and held rainwater that
   ran down the windows past the cat-whiskers. It's a rare Mangusta that
   has intact OEM door bottoms- most are/were rusted out. Ford & DeTomaso
   left that innovation out of Panteras and it may not have been just
   cost.  Dunno about Dynamat's water-absorbency.
   Cheers- J DeRyke
   -----Original Message-----
   From: Dave Londry <davel at trguys.com>
   To: detomasolist <detomaso at server.detomasolist.com>
   Sent: Sun, May 24, 2020 6:07 pm
   Subject: [DeTomaso] Fwd: Re: dyna mat
     Very true - I was just afraid of getting into anti-nodes and poles
   and
     zeros etc.
     On 2020-05-24 12:59 p.m., John Maloney wrote:
     Dave,
     Your e-mail on Dynamat is excellent.  However, what you refer to as
     nodes are called anti-nodes.  Nodes are points at which there is no
     motion in that mode of vibration.
     John #3269
     Retired Structural Dynamist
     Sent from [1]Mail for Windows 10
     From: [2]Dave Londry
     Sent: Sunday, May 24, 2020 12:32 PM
     To: [3][1]detomaso at server.detomasolist.com
     Subject: Re: [DeTomaso] dyna mat
     Our good buddy with the Mangusta (factory small-block chevy), Dick
     Ruzzin, gave me a great lesson on placing sound deadening material.
     The point is to locate the Dynamat at the nodes (places where the
     vibration amplitide is greatest) and just enough of it to 'kill the
     buzz'.
     It all takes some messing around, like driving around with no door
     panels installed and nothing on the inner roof.
     And, the pressure of a one thumb in the right place will simply kill
     one
     vibration mode.
     I got the doors well with one 3"x 8" piece horizontally in the middle
     of
     each door.
     I needed to drive the car over to Detroit to have the master do the
     roof, but that would be 2500 miles each way.
     On my own I did get it well damped, with four 6" x  6" pieces spread
   in
     a square, but I know he'd have used much less.
     The roof had about 4 modes that I kept chasing around for several
   hours
     until i just threw extra material at them.
     Dave
     On 2020-05-23 10:20 a.m., David wrote:
     >    Mr. Finch,
     >
     >
     >    As an experiment I used a "dyna mat" type product on the ceiling
     of my
     >    hot rod truck when I had the headliner (a piece of card board)
     out.
     >    Poo, can't find the video comparison . . . .
     >
     >
     >    You don't need to cover every inch, just a piece across the
   roof,
     you
     >    will be amazed. My old truck lives outside, the stuff never
   comes
     off.
     >
     >
     >    David in Durango
     >
     >
     > _______________________________________________
     >
     >
     > Detomaso Email List is not managed by POCA
     > Posted emails must not exceed 1.5 Megabytes
     > DeTomaso mailing list
     > [4][2]DeTomaso at server.detomasolist.com
     > [5][3]http://server.detomasolist.com/mailman/listinfo/detomaso
     >
     > To manage your subscription (change email address, unsubscribe,
   etc.)
     use the links above.
     >
     > Members who post to this list grant license to the list to forward
     any message posted here to all past, current, or future members of
   the
     list. They also grant the list owner permission to maintain an
   archive
     or approve the archiving of list messages.
     --
     Dave Londry
     TRGuys.com
     [6][4]davel at trguys.com
     Cell    604-721-2278
     Skype    embeddedspaces
   --
   Dave Londry
   TRGuys.com
   [7][5]davel at trguys.com
   Cell    604-721-2278
   Skype    embeddedspaces
   References
     1. [6]https://go.microsoft.com/fwlink/?LinkId=550986
     2. mailto:[7]davel at trguys.com
     3. mailto:[8]detomaso at server.detomasolist.com
     4. mailto:[9]DeTomaso at server.detomasolist.com
     5. [10]http://server.detomasolist.com/mailman/listinfo/detomaso
     6. mailto:[11]davel at trguys.com
     7. mailto:[12]davel at trguys.com
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
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   To manage your subscription (change email address, unsubscribe, etc.)
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   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

References

   1. mailto:detomaso at server.detomasolist.com
   2. mailto:DeTomaso at server.detomasolist.com
   3. http://server.detomasolist.com/mailman/listinfo/detomaso
   4. mailto:davel at trguys.com
   5. mailto:davel at trguys.com
   6. https://go.microsoft.com/fwlink/?LinkId=550986
   7. mailto:davel at trguys.com
   8. mailto:detomaso at server.detomasolist.com
   9. mailto:DeTomaso at server.detomasolist.com
  10. http://server.detomasolist.com/mailman/listinfo/detomaso
  11. mailto:davel at trguys.com
  12. mailto:davel at trguys.com
  13. mailto:DeTomaso at server.detomasolist.com
  14. http://server.detomasolist.com/mailman/listinfo/detomaso

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