How to make your Viking MUCH quieter (DIY) - Yamaha Viking Forum
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post #1 of 118 (permalink) Old 03-19-2014, 01:22 PM Thread Starter
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How to make your Viking MUCH quieter (DIY)

I would say, and most would agree, that the number one complaint about the Viking is the amount of noise you hear in the cab. I have tried a few things, and all have worked to varying degrees. However, I just finished my soundproofing project, and I am MORE than pleased with the results.
I took my Viking to a local shop, that specializes in soundproofing, and challenged them to come up with a solution. We tried several products that seemed promising...so I took a bunch of it home and gave it a shot. What I can tell you is this...Between the Hushpower muffler and the installed soundproof material, I now have the quietest Viking out there. I can have a normal conversation with the person next to me and have to raise my voice just a bit to talk to the person in the far seat. I can honestly say that noise is no longer an issue for me! I'm not saying it's a golf cart quiet...but it is no louder than anything else I tried....and quieter than some.

Here's the info: I used 3 materials
#1. 3 LF of 1" SSP foam mat (SSP = Super Sound Proof)
#2. 2 LF of 2" SSP
#3. 3 LF of 1/8" MLV and 1/4" SSP bonded (MLV = Mass Loaded Vinyl)
Plus 1 can of spray on contact cement

This stuff is a closed cell foam that is water proof - mold, mildew, gas and oil resistant.

I removed the seats and covered all of the plastic from where your heals touch on up to the front of the seats. I did this on the back side (inside) so it was not visible. Then I cut individual pieces and covered all of the plastic (on top the outside) under the seats. You need to take your time with this as there are many different shapes and stuff. This was all done with the MLV SSP and contact cement. Then I pulled the side panels off and used a large piece of the 2" SSP and ran it front to back along the inside square frame from under the drivers seat and used the same stuff around the outside seat belt holes and gas tank. Then I put the seats back in and used the 1" SSP to fill every void in between the seat frames and over the tool storage area...and used 2" SSP over the top of the air cleaner box. Don't forget the holes where the seat belts come through as well. Next I used a piece of the 1" SSP that fit perfect on the front of the bed. I left the pipe insulation and bed mat from my earlier sound project. Next, I used some pieces of the 2" SSP that filled the gap between the back of the seats and the pipe insulation.
When I started it up, I was amazed at the difference...I mean it's HUGE! One thing I also learned is that, after doing all this, I found that there was a howl coming from the air intake under the hood. I threw a piece of the MLV over that as well. In short, all I did was put a sound barrier between the cab and the engine...and the difference truly is night and day!

The sound proofing materials will run you approx. $175 plush shipping. The name of the company is "Super Soundproofing" just ask for Randy...he really knows his stuff! (888-942-7723)
Best Soundproofing Materials, Noise Control Materials and Solutions by soundproofing.org

I would HIGHLY recommend the Hushpower silencer along with the SSP material. In my opinion, if Yamaha would have done this from the beginning the sound problem would hardly be an issue! It really is that big of a difference!

Here are the install photo's...

MLV over the seats
How to make your Viking MUCH quieter (DIY)-dscn0376.jpg How to make your Viking MUCH quieter (DIY)-dscn0378.jpg

1"SSP in all the voids around the seat frames and 2" over the air box
How to make your Viking MUCH quieter (DIY)-dscn0392.jpg

2" SSP along the interior frame
How to make your Viking MUCH quieter (DIY)-dscn0381.jpg

1" SSP on front of bed w/pipe insulation on latch rod
How to make your Viking MUCH quieter (DIY)-dscn0391.jpg

With seats installed material is not that noticable
How to make your Viking MUCH quieter (DIY)-dscn0394.jpg

Behind seats w/2" SSP to fill gap between seats and bed
How to make your Viking MUCH quieter (DIY)-dscn0389.jpg How to make your Viking MUCH quieter (DIY)-dscn0383.jpg

Here are the materials
How to make your Viking MUCH quieter (DIY)-dscn0385.jpg

What I learned most of all was that it makes a huge difference if you use materials that were specifically designed to reduce noise and sound transfer. This stuff REALLY works! Here's a link to the video... http://www.vikingforum.org/forum/yam...ing-video.html

2014 Viking w/Viking VI (NO SAG) shock upgrade
Viper Max 5000lb wide spool
Hushpower silencer & DIY Soundproofing (Quietest Viking around!)
OEM cargo box, front/rear windshield, bed mat & overfenders
Heat shield by (Blue Wolf)
Night Rider (PlasmaGlow)
Custom lighted switch, gauge & bolster panels (Concours Specialties)
DIY Custom spare tire carrier & bed rails
ITP SS212 wheels & 26.5" Pit Bull Rockers
LED lighting (Baja Designs)
Kolpin gun holder
Summit 28,000BTU heater
Strongmade Lift
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post #2 of 118 (permalink) Old 03-19-2014, 03:01 PM
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Great job, i personally cant wait to see some Videos of it driving by, etc.

***Formally Viking2k14*** But still here to help anytime!!

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post #3 of 118 (permalink) Old 03-19-2014, 03:43 PM
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Thank you MnT, you've done a lot to help out many.
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post #4 of 118 (permalink) Old 03-19-2014, 04:06 PM
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Very nice, was starting on this last weekend, just don't have the 2" stuff

Joe

2014 Viking
Street Legal w/ License plate
Arrived at dealer on 11-15-13
Picked up 11-29-13
Line-X bed liner inside & out
Moto Alliance Light bar & Viper 5000lb winch
Headlight Brush Guards
Over Fenders, Rear Bumper
Overhead Stereo, Kick panel speakers, Sub
Floor Mats, Bed Mat
Sound Deadening kit
Added to make street legal:

Turn Signals, Horn, license plate light
Windshield wiper & washer sprayer
Side view mirrors, DOT windshield
STI Black Diamond XTR, DOT Radial tires & HD4 wheels 12-11-14



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post #5 of 118 (permalink) Old 03-19-2014, 04:31 PM
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Mass,

Are you losing any storage under the seats (driver)?...not that reduced noise levels is a bad compromise. Just wondering?
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post #6 of 118 (permalink) Old 03-19-2014, 04:57 PM Thread Starter
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Thanks guys...this is hands down the best money I have spent on it. To put it in perspective, the windshield cost me twice as much...and I got MUCH more out of this! I mean this is one of the cheapest things I've done to the dang thing

Fhb...the only space I lost under the seat would be the 2" thickness of the foam that runs (on edge) right along the inside frame rail from where your right heel is to the plastic right in front of the rear tire. There is still a ton of room under there.

One thing I didn't mention in my first post is how important that piece is on the front of the bed. That area behind the seats is where most of the noise is coming from.

2014 Viking w/Viking VI (NO SAG) shock upgrade
Viper Max 5000lb wide spool
Hushpower silencer & DIY Soundproofing (Quietest Viking around!)
OEM cargo box, front/rear windshield, bed mat & overfenders
Heat shield by (Blue Wolf)
Night Rider (PlasmaGlow)
Custom lighted switch, gauge & bolster panels (Concours Specialties)
DIY Custom spare tire carrier & bed rails
ITP SS212 wheels & 26.5" Pit Bull Rockers
LED lighting (Baja Designs)
Kolpin gun holder
Summit 28,000BTU heater
Strongmade Lift
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post #7 of 118 (permalink) Old 03-20-2014, 09:21 AM
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that is awesome. thanks for sharing

you should have got a noise meter! measured the before and after

that would have given some nice raw data to the modification
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post #8 of 118 (permalink) Old 03-20-2014, 10:03 AM
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I was going to say the same thing. Where is the data?


But it can still be done. We need someone that has a bone stock Viking. The db meter should be placed inside the cab at ..say...head level and take a reading at idle, 5mph, 10mph, 20 mph, 30mph on the same type of riding surface, etc. As long as the readings are taken consistently the data should be a fairly good measure of reduction of interior db levels. The same readings with the same variables can be taken on his modified Viking. It would be best to use the same db meter but that most likely won't happen unless he has a buddy with an unmodified Viking local to him.

I personally am more interested in the interior noise than the exterior noise.

Joe



Quote:
Originally Posted by cheeyz View Post
that is awesome. thanks for sharing

you should have got a noise meter! measured the before and after

that would have given some nice raw data to the modification

2014 Viking
Street Legal w/ License plate
Arrived at dealer on 11-15-13
Picked up 11-29-13
Line-X bed liner inside & out
Moto Alliance Light bar & Viper 5000lb winch
Headlight Brush Guards
Over Fenders, Rear Bumper
Overhead Stereo, Kick panel speakers, Sub
Floor Mats, Bed Mat
Sound Deadening kit
Added to make street legal:

Turn Signals, Horn, license plate light
Windshield wiper & washer sprayer
Side view mirrors, DOT windshield
STI Black Diamond XTR, DOT Radial tires & HD4 wheels 12-11-14



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post #9 of 118 (permalink) Old 03-20-2014, 11:16 AM Thread Starter
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Quote:
Originally Posted by cheeyz View Post
that is awesome. thanks for sharing

you should have got a noise meter! measured the before and after

that would have given some nice raw data to the modification


I thought about a db meter, but I already had the muffler on and the mat behind the seats. I didn't want to pull that off and start from scratch. Sorry about that. All I can tell you is that it is WAAAAAAY quieter now and, for $175, it's the best investment I have made. Even if you did it and still wanted it quieter...it still will be much quieter than before. The only raw data I have is my ears....and my ears say this really made a BIG difference.
I don't know how much came from the muffler, and how much came from the sound proofing? I think most came from the sound proofing...but at lower RPM and idle the exhaust noise is negligible. You saw in the video what it sounded like next to that generator.
Again, anyone can get an idea ,as to how much you can quiet the cab down, by doing the towel thing. Shove a bunch of towels between the back of the seats and the front of the bed (fill that space up). Also fill all the gaps (seat belt holes) in and around the seats. You WILL notice a big difference!

BTW...did you know the Viking was already running in the video?
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2014 Viking w/Viking VI (NO SAG) shock upgrade
Viper Max 5000lb wide spool
Hushpower silencer & DIY Soundproofing (Quietest Viking around!)
OEM cargo box, front/rear windshield, bed mat & overfenders
Heat shield by (Blue Wolf)
Night Rider (PlasmaGlow)
Custom lighted switch, gauge & bolster panels (Concours Specialties)
DIY Custom spare tire carrier & bed rails
ITP SS212 wheels & 26.5" Pit Bull Rockers
LED lighting (Baja Designs)
Kolpin gun holder
Summit 28,000BTU heater
Strongmade Lift
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post #10 of 118 (permalink) Old 03-20-2014, 12:51 PM
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Did you custom fab the Flowmaster Hushpower Silencer to fit or is it available as an off the shelf item from the manufacturer? Any information that you have would be greatly appreciated...
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