Skid Plate Noise ! - Kawasaki KLR 650 Forum
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post #1 of 12 Old 06-06-2012, 02:10 AM Thread Starter
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Skid Plate Noise !

I noticed a large increase in engine noise when I installed the HT aluminum skid plate, and I mean noises were resonating up to me on driving around town that I kept wondering "what the heck?" Sounded like the thing was ready to toss a rod, throw a chain, just hard to listen to. But being new and knowing the only thing I did was add the plate I decided to take it off and test ride. Back to quiet thumper. I then wrapped all the contact points of the frame (where it clamps) and the U-bolt and spacer block with electrical tape and re-install. Knocked the resonation I was hearing way down, guess about 90% gone. Made a huge difference.
Anyone else tried this or have an even better solution? The only thing I think might be better is I have some clear adhesive insulating plastic sheating that maybe I could make two nice wraps, but it's a lot harder than simply wrapping good quality (3M) electrical tape about four wraps. It sure did deaden the sound.
The only issue I have with the electrical tape is longevity. It will undoubtedly get gummy with chain lube, heat etc...
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post #2 of 12 Old 06-06-2012, 02:18 AM
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I forgot about the added noise mine made...

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post #3 of 12 Old 06-06-2012, 06:46 AM
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Huh? What?
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post #4 of 12 Old 06-06-2012, 07:22 AM
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My apologies if I reference the wrong forum member, but I believe it was sardog1 who sprayed the inside surfaces of his metal skid plate with truck bed liner or something similar and reported a noticeable decrease in the amount of noise reflected by the plate.



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post #5 of 12 Old 06-06-2012, 10:14 AM Thread Starter
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I don't have any bed liner handy. For now the tape worked really good. Knocked some vibration down too.
I did add some spacer washers behind the Regulator when I installed the PD Nerf bar crossovers. I wasn't even gonna be able to get them on without stressing the plug in the bottom. Now I have a little clearance too so it could bend a little if need be.
None of the kit fit very good, or these bikes are all really different, which I understand there is some variation. Next is dealing with the front fender which I went and rode in the wind last night and I could feel it pretty good in the gusts. I might just take a jigsaw , and sand paper to it before I go on a trip.
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post #6 of 12 Old 06-06-2012, 10:48 AM
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Quote:
Originally Posted by LittleSteve View Post
I noticed a large increase in engine noise when I installed the HT aluminum skid plate, and I mean noises were resonating up to me on driving around town that I kept wondering "what the heck?" Sounded like the thing was ready to toss a rod, throw a chain, just hard to listen to. But being new and knowing the only thing I did was add the plate I decided to take it off and test ride. Back to quiet thumper. I then wrapped all the contact points of the frame (where it clamps) and the U-bolt and spacer block with electrical tape and re-install. Knocked the resonation I was hearing way down, guess about 90% gone. Made a huge difference.
Anyone else tried this or have an even better solution? The only thing I think might be better is I have some clear adhesive insulating plastic sheating that maybe I could make two nice wraps, but it's a lot harder than simply wrapping good quality (3M) electrical tape about four wraps. It sure did deaden the sound.
The only issue I have with the electrical tape is longevity. It will undoubtedly get gummy with chain lube, heat etc...

Dude ear plugs! I've ridden about twice without plugs, the motor noise is distracting. I did glue some inner tube strips to the plate where it contacted the frame, don't remember if it made much difference.

No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him. 1 Cor 2:9
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post #7 of 12 Old 06-06-2012, 10:50 AM
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Thanks for the heads up, I plan on getting that skid plate so I'll keep that in mind when installing.
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post #8 of 12 Old 06-06-2012, 03:21 PM Thread Starter
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I always take ear plugs when I have to make long runs. The KLR is pretty quiet compared to my V-1300 with straight Cobra pipes ! It's the kind of noise echoing up at me with the aluminum sheet plate hard against the frame that just sounded pretty rough. Even the counter ballance chain could be easily heard, about three times as loud, and there was also a high pitched whine on slow accleration that was really exagerated. Sounded like the transmission on my 1300. It all pretty much went away getting a little insulation between the metal, so why not.
Thans for the comments,
Steve
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post #9 of 12 Old 06-06-2012, 05:11 PM
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TPI sells some skid plate foam made by UNI - The same people who make foam air filters. I've heard that helps.

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post #10 of 12 Old 06-06-2012, 10:09 PM
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The skid plate I built did the same thing, I took a fat piece of rubber and compressed it between the plate and the frame at the closest pinch point. Stopped the resonating completely.

http://www.klrforum.com/showthread.php?t=12001
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