twobone Posted September 26, 2011 Share Posted September 26, 2011 I'm thinking of putting a dynamat type product behind the seats, in the truck, on the tranmission tunnet, under the carpets and on the firewall. I need to lower the highway noise. Even with earplugs and ear defenders, the harmonic noise is very high. I'm hoping to mask some of the tranmission, propshaft and diff noises. Any one attemp this? Link to comment Share on other sites More sharing options...
GBOLT Posted September 26, 2011 Share Posted September 26, 2011 A few stalker guys have done Lizard Skin. Here is a link. http://www471.pair.com/stalkerv/gallery2/main.php?g2_itemId=15684 Link to comment Share on other sites More sharing options...
WestTexasS2K Posted September 26, 2011 Share Posted September 26, 2011 Lizard skin works well if you want a spray on. Dynamat will be easier. Link to comment Share on other sites More sharing options...
HOTTTCAR Posted September 26, 2011 Share Posted September 26, 2011 I have used both also. Second Skin Damplifier Pro. seems to b as good as Dynamat and usually costs less and i prefer it. You dont have to cover the whole panel to kill the sound transfer. Once you get it rolled on don't plan on taking it off easily. It is an Al. foil backed butyl based rubber adhesive that cuts noise transfer and vibration. It works. Link to comment Share on other sites More sharing options...
pi7ot Posted September 26, 2011 Share Posted September 26, 2011 I don't have a recommendation for any sound deadening. I tend to think that the R'n'R (Rawness and Racket) is a large part of the appeal of the Beastie. I get fed up with the inertia and civility of regular cars. I hop into one of the big fat Bimmers if I'm not in the mood for Rock 'n' Roll. I did add a piece of dynamat to the underside of the bonnet to cut down on a buzz, caused by the ign coil pack. I run into the conundrum of improving a condition, (eg heat soak killing the starter,) vs the gain in weight. It is raining today and I feel like pulling out the 7. Better wait. m Link to comment Share on other sites More sharing options...
twobone Posted September 26, 2011 Author Share Posted September 26, 2011 I hear you (although it appears less so every day ; Link to comment Share on other sites More sharing options...
m wirth Posted September 26, 2011 Share Posted September 26, 2011 on long drives I just wear my open face helmet with a nice visor, don't seem to get any more looks than usual. it is just a 4 wheel motorcycle. Link to comment Share on other sites More sharing options...
Mondo Posted September 27, 2011 Share Posted September 27, 2011 I tried some on stuff that is similar to dynomat (worked great in my 67 truck). I thought it might be vibrating aluminum sides (footwell area) but didn't notice much. Thinking of getting some of this to put near latches or other pieces that are close to each other. http://zeronoise.com/automotive_noise_control/automotive_gasketing_foam.htm Link to comment Share on other sites More sharing options...
BMW RACER Posted September 27, 2011 Share Posted September 27, 2011 While we're on the topic of noise. I have a crossflow with the T9 trans. I was wondering how noisy the trans should be. With the side curtains on I can hear what sounds to me to be quite a bit of trans noise. With no curtains most of it gets drowned out by the buffeting. Maybe I've spent too much time driving German sedans. I'm wondering, is my trans is getting tired or is this normal for a car with virtually no sound deadening? Link to comment Share on other sites More sharing options...
twobone Posted September 27, 2011 Author Share Posted September 27, 2011 I think that the sound is normal. With the side curtains and/or roof up, you get to listen to the diff and tranny. I think the diff is the larger culprit. Its got very large ring and pinion and bearings spinning right underneath a flimsy plywood panel right behind your ears. I also think the flat rear seat back panel makes a good resonator Link to comment Share on other sites More sharing options...
pi7ot Posted September 27, 2011 Share Posted September 27, 2011 (edited) Plywood panel?? Birkin have really upped the ante since 2000 :hurray: Mine is um...paper with black vinyl trim :cooldude: I don't hear any gear whine, diff or box, just tyre , wind, and now major exhaust. I would suggest Redline MTL in the T9. I think I'm using either Mobil 1 or Valvoline synthetic in the Quaiffed diff. That reminds me. I add some felt-like material between the braces and the aluminum bulk head behind the seats. m Edited September 27, 2011 by pi7ot Link to comment Share on other sites More sharing options...
danilo Posted September 27, 2011 Share Posted September 27, 2011 Sound deadening can be added in a number of ways: Dynamat ( Peel 'n Stick Ice 'n water shield from a construction supply firm, IF you want to pay 'normal' pricings). Doesn't really do that much (tested) unless the panel resonates, then the added mass helps dampen the vibrations. That Goop that Truck owners slather onto their truck beds to 'protect' them, "Bed Liner". From what only Gawd knows? Same effect as sticky backed SBS (tar) membranes described above. But It'll take a chisel to remove it later though :-) Carpet underfelt, the compressed fiber blanket types: Yup, comes in several thicknesses is water / mold /fire proof. Scissors cuts it nicely and it's easily attached with removable (eventually:-) adhesive. IMO the Best choice for actually deadening noises and Very inexpensive as unexpected bonus. Link to comment Share on other sites More sharing options...
twobone Posted October 14, 2011 Author Share Posted October 14, 2011 (edited) I went ahead and ordered 50 square feet of B-Quiet Ultimate ( http://www.b-quiet.com/ultimate.html ). I know I will pay a small weight penalty, but its all in an attempt to quiet her down a bit Tonight I pulled the seats and the carpets in preparation for the sound deadening. There really isn't much to these cars is there (Steel tube + ali sheet + rivets = car...LMAO) As an added comfort feature I'm going to swap the passenger and driver seats. The driver seat canvas seat bottom is broken. No wonder it felt like I was sitting on the floor...I was! Fixing the seat can be another winter project Edited October 14, 2011 by twobone Link to comment Share on other sites More sharing options...
lancylad Posted October 14, 2011 Share Posted October 14, 2011 Did mine in the thermo -coustic material from Eastwood company. Made a noticable difference in sound transmission. Added weight to the car but thats okay. My lovely lady noticed the difference the first time out in the car..after the refit. Link to comment Share on other sites More sharing options...
HOTTTCAR Posted October 14, 2011 Share Posted October 14, 2011 (edited) We covered every Al panel in this car. It added 28lb. but like the last one it won't sound like a rattle trap when you hit a bump. http://www471.pair.com/stalkerv/gallery2/main.php?g2_itemId=19326 Edited October 14, 2011 by HOTTTCAR Link to comment Share on other sites More sharing options...
twobone Posted October 24, 2011 Author Share Posted October 24, 2011 I ended up putting about 10 lbs of sound deadening in the following places: -bulkhead behind the seats -on the floor under the seats and floor carpet -Under the carpet in the transmission tunnel -a bit under the dash on the firewall -a bit on the outside of the pedal box -under the carpet in the boot I have to say the car is transformed at highway speeds. It took a huge chunk out of the high pitched ambient sound and vibration of the transmission, propshaft and live axle diff. All the fun with just less fatigue. In my mind, it was well worth the weight and the cost ($150). I came home after a full day drive to the sound of silence (no excess ear ringing). Link to comment Share on other sites More sharing options...
11Budlite Posted October 25, 2011 Share Posted October 25, 2011 Thanks for the update twobone. I might do the same thing to my Birkin this winter... Link to comment Share on other sites More sharing options...
Mondo Posted October 25, 2011 Share Posted October 25, 2011 Good earplugs are a lot quieter & cheaper;) Just kidding, I wish I could get it to only engine exhaust, wind & tire noise... Link to comment Share on other sites More sharing options...
twobone Posted October 25, 2011 Author Share Posted October 25, 2011 whats interesting is that before, even with earplugs and ear defenders, the vibration and resonance would work its way into my head (time to wear a tinfoil hat to keep out the signals from the mother-ship I guess). Much better now Link to comment Share on other sites More sharing options...
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