klr 650 : 685 kit-- nklr freedom frites--

[revmaaatin]

List- Thinking about how to reduce bike noise to my ears. Yes Virginia, I wear ear plugs when I ride. OEM muffler installed. Q. Has anyone here used the 'waffle' rubberized-fabric draw liner to line their inner metal skid plate to reduce reflected engine noise? Q. How well did it work for you?--if you did it. Q. What did you use for glue to keep it on? It has been nearly 6 years since I went metal vs plastic skid plate and recall there was a significant increase in reflected, audible engine noise--and I want to knock as much of that down as possible. Q. Other suggestions? my ears thank you in advance. revmaaatin.

[jeepaviation]

I have not lined my metal skid plate with any type of waffle. However, I do know of an adhesive that will glue rubber to metal and keep it there. The product is made by 3M and is Labeled 1300L. Amongst us aviation types it is affectionately known as gorilla snot. Look up your local airport and find a maintenance or service center, or try to order some online. I will keep my eye on this thread. I have not heard of the waffle mod to reduce noise. If it is effective, I would may install a blueberry waffle:)

--- In DSN_KLR650@yahoogroups.com, "revmaaatin" wrote: > > List- > Thinking about how to reduce bike noise to my ears. > Yes Virginia, I wear ear plugs when I ride. OEM muffler installed. > > Q. Has anyone here used the 'waffle' rubberized-fabric draw liner to line their inner metal skid plate to reduce reflected engine noise? > > Q. How well did it work for you?--if you did it. > Q. What did you use for glue to keep it on? > > It has been nearly 6 years since I went metal vs plastic skid plate and recall there was a significant increase in reflected, audible engine noise--and I want to knock as much of that down as possible. > > Q. Other suggestions? > > my ears thank you in advance. > > revmaaatin. >

[Jeff Khoury]

#ygrps-yiv-196449870 p {margin:0;}I always thought that spray-on rubberized undercoating would work well... It certainly works well on cars.  $4.00/can at Pep boys, Duplicolor brand. -Jeff Khoury

----- Original Message ----- From: "revmaaatin" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Sunday, December 20, 2009 7:38:37 PM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] Metal skid plate noise reduction   List- Thinking about how to reduce bike noise to my ears. Yes Virginia, I wear ear plugs when I ride. OEM muffler installed. Q. Has anyone here used the 'waffle' rubberized-fabric draw liner to line their inner metal skid plate to reduce reflected engine noise? Q. How well did it work for you?--if you did it. Q. What did you use for glue to keep it on? It has been nearly 6 years since I went metal vs plastic skid plate and recall there was a significant increase in reflected, audible engine noise--and I want to knock as much of that down as possible. Q. Other suggestions? my ears thank you in advance. revmaaatin.

[Ross Lindberg]

Moose makes some skid plate noise dampening foam for about $10.  Fred should be able to get some for you.  Undercoating/bed liner is tough as nails and would look pretty cool, but the foam seems like a lot less work.

 

Ross Lindberg

Fertile, MN

[spike55_bmw]

Foam works best as long as the voids (air bubbles) remain open and can 'capture' the annoying frequencies. These voids will evenually fill up with dirt / oil an become less effective. Its a trade-off. I dealt with noise attenuation issues in the food industry where closed shiny surfaces were easy to keep clean but reflected the machine noise that we wanted to reduce to acceptable levels (90dBa / 8hrs). We settled on very rough surfaces that would scatter the noise but then we had use pressure washers for cleaning rather than a simple / less costly wipe-down. Also higher frequencies are easier to disrupt and I don't know, off-hand, what the KLR engine puts out ('a' scale). I might be over-analyzing this. For $10, try it and report back. Don R100, A6F

--- In DSN_KLR650@yahoogroups.com, "Ross Lindberg" wrote: > > Moose makes some skid plate noise dampening foam for about $10. Fred should > be able to get some for you. Undercoating/bed liner is tough as nails and > would look pretty cool, but the foam seems like a lot less work. > > > > Ross Lindberg > > Fertile, MN >

[revmaaatin]

--- In DSN_KLR650@yahoogroups.com, Jeff Khoury wrote:

> > I always thought that spray-on rubberized undercoating would work well... It certainly works well on cars. $4.00/can at Pep boys, Duplicolor brand. > > -Jeff Khoury > >

Thanks to all who responded. I think this rubberized undercoating is the way I'll try first. Would seem to be much cleaner than the waffle draw liner--and perhaps even less of a fire hazard. Thinking about Ross's suggestion for foam--looks like that would trap heat more than the others suggestions of undercoating or waffle drawliner. Unless you have a bike instrumented like -my-dear-Watson of the thermobob fame, the thoughts about trapping heat would only be speculation on my part. I have the 'foam' on my KLX300R--but it is used to plug holes, installed by the PO--keep the dirt from packing into the 'voids'-- rather than deaden sound. Thanks to all who replied. Looks like a good April 1 project. revmaaatin.

[albatrossklr]

Hi Rev, I think you will have a problem with getting this stuff to stick and the reviews are not favorable. albatross (keeping mine naked)

--- In DSN_KLR650@yahoogroups.com, "revmaaatin" wrote: > > > > --- In DSN_KLR650@yahoogroups.com, Jeff Khoury wrote: > > > > I always thought that spray-on rubberized undercoating would work well... It certainly works well on cars. $4.00/can at Pep boys, Duplicolor brand. > > > > -Jeff Khoury > > > > > > Thanks to all who responded. > I think this rubberized undercoating is the way I'll try first. > Would seem to be much cleaner than the waffle draw liner--and perhaps even less of a fire hazard. > > Thinking about Ross's suggestion for foam--looks like that would trap heat more than the others suggestions of undercoating or waffle drawliner. Unless you have a bike instrumented like -my-dear-Watson of the thermobob fame, the thoughts about trapping heat would only be speculation on my part. > > I have the 'foam' on my KLX300R--but it is used to plug holes, installed by the PO--keep the dirt from packing into the 'voids'-- rather than deaden sound. > > Thanks to all who replied. > Looks like a good April 1 project. > > revmaaatin. >

[revmaaatin]

--- In DSN_KLR650@yahoogroups.com, "albatrossklr" wrote:

> > Oh great Rev of the heilige bergen, > > I had to look that one up on Google Earth..... > > Landed for a while in Gen ve mid-life and do enjoy dark roast coffee, Bordeaux blend reds, but absolutely hate fluffy breads. Bread should have prominent grains, chewy crust and a flavor of it's own.... stone ground rye comes to mind. > > albatross > (just a winged vagabond) >

Iye--a winged vagabond as well--but mine wings were of Titanium, Aluminum and Kevlar--with badges titled Sikorsky and Beechcraft. I spent two years strapping on big helo's out of Sicily during 86-88; chasing USS Flat-tops from Portugal to Tel Av and many points in between. I accumulated/spent 30+ days in Hyeres, FR. not all at once but in bits and pieces of 3-7 days at a time. Hyeres what a place. We were also 'forced' to rent big-block turbo-charged Mercedes/Renault/Peugeot cars because the compacts had no seat-belts. Since I was driving these primo-Euro cars, I felt obligated to validate many of Car and Drivers opinions. Alas--I did not know that 'Dual Sports' even existed then, outside of the occasional .sic. R-80GS that one would see. Sport bikes/mopeds largely ruled the streets plus an occasional Harley. The KLR would have really been at home in Italy, or during my tour in Spain 93-95. sigh. Oh, I would have loved to roamed about Greece and Turkey as well. Not out of reach now, just not as easily when you are living there. Nothing finer than to pull into a Coffee BAR via a thumping Dual Sport or Sikorsky/Beechcraft/rental car and have a local pastry and cappuccino. Even those things change as well--the Euro really take pride in their pastry chiefs and the the only decent cappuccino within 200 miles is available/made in my own kitchen--as some of those on this list have enjoyed as they passed through. Not to worry--the great plains is also quite a place for a KLR as well--and I am doing my part to log as many smiles as possible. revmaaatin. oil/tyre change/cappuccino available on request.

[Jeff Khoury]

#ygrps-yiv-829699096 p {margin:0;}You can make it stick, but as with any coating, you must prep properly first.  The biggest barriers to it sticking are: *Surface being too smooth *Oil/dirt/detergent on the surface. In the case of your skidplate, scuff it with 220 grit, wipe with alcohol or mineral spirits and then apply.  I use alcohol because high-school chemistry tought me that alcohol dissolves fat (or oils in this case).  It takes a long time to dry and smells like asphalt. I've applied it to car fender wells and the underside of my CB750's rear fender.  It's still there!

----- Original Message ----- From: "albatrossklr" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Monday, December 21, 2009 11:55:38 AM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] Re: Metal skid plate noise reduction   Hi Rev, I think you will have a problem with getting this stuff to stick and the reviews are not favorable. albatross (keeping mine naked) --- In DSN_KLR650%40yahoogroups.com, "revmaaatin" wrote: > > > > --- In DSN_KLR650%40yahoogroups.com, Jeff Khoury wrote: > > > > I always thought that spray-on rubberized undercoating would work well... It certainly works well on cars. $4.00/can at Pep boys, Duplicolor brand. > > > > -Jeff Khoury > > > > > > Thanks to all who responded. > I think this rubberized undercoating is the way I'll try first. > Would seem to be much cleaner than the waffle draw liner--and perhaps even less of a fire hazard. > > Thinking about Ross's suggestion for foam--looks like that would trap heat more than the others suggestions of undercoating or waffle drawliner. Unless you have a bike instrumented like -my-dear-Watson of the thermobob fame, the thoughts about trapping heat would only be speculation on my part. > > I have the 'foam' on my KLX300R--but it is used to plug holes, installed by the PO--keep the dirt from packing into the 'voids'-- rather than deaden sound. > > Thanks to all who replied. > Looks like a good April 1 project. > > revmaaatin. >