Gen2 Front Fender Laminar Lip - Kawasaki KLR 650 Forum
Bike and Rider Gear For discussions on different gear for the ride & rider.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 22 Old 04-01-2013, 10:04 AM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,344
Gen2 Front Fender Laminar Lip

I fiind myself cursed with the "beakish" Generation 2 front fender that is fabled for creating handling issues at high speeds (above 70mph) due to its design acting as a "kite" or "sail." A lot of riders consider it a drawback to the Gen2 KLR "makeover" and consider it a nuisance if not an outright danger.

It seems like a lot of riders opt to forego the stock front fender entirely, replacing it with front fenders from other motorcycles. While doing research, I found this effective solution online: the "Kawasaki KLR 650 Generation 2 Front Fender Laminar Lip." I figured "What can I lose for $25?"

I was able to get it installed over the weekend and give it a try on a windy day and the difference in handling was immediately apparent and much appreciated. Gone were the days of sudden and unexpected movement of the bars, bike and myself as gusts of wind or the wind blast from semis caught the oversized and poorly-designed stock front fender.

When I first received the thing in the mail, I thought, "What the hell is this gonna do?" It didn't seem like much and I had my doubts as to its efficiency in alleviating the problems associated with the fender's poor aerodynamics.

The lip itself is made from .040 aluminum stock and is easily attached, requiring only the drilling of two small holes in the fender to use the included screws and nuts. After I had installed it, I couldn't resist pushing on it and, just as I had thought, it seemed suspect and flimsy. It currently only comes in black, but can be painted to match fenders of any color.

The manufacturer claims that the laminar lip disrupts the "Boundary Layer" that forms just above the surface of the Gen2 front fender at higher speeds, especially generating lift in the recessed area at the flat, top part of the fender near the attachment point where the fender is beefier and forces can be transferred through the forks.

With the boundary layer disrupted, the molecules of air don't get a good "grip" on the material they're passing over (in this case the upper surfaces of the fender) therefore the forces of any air molecules (i.e. "wind") impacting and flowing over fender and creating lift are greatly negated by the laminar lip disrupting their flow.

All the technical mumbo-jumbo aside, the proof is in the pudding. I put this thing on and can confirm that it does work and, in fact, works quite well. Freeway riding and riding on windy, gusty days are much more relaxed and also much safer. Thanks to this laminar lip, my "Front Fender Of Death" is no longer a concern. I recommend the product highly. For those of you concerned about the aerodynamics of the stock Gen2 fender, the laminar lip is an economical solution and is a lot quicker and easier to put on that a complete replacement fender.








planalp is offline  
Sponsored Links
Advertisement
 
post #2 of 22 Old 04-01-2013, 11:48 AM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,615
Garage
Have you noticed whether or not it produces a whistling sound that might startle deer?

It looks like an excellent idea, from an aero perspective. I'm thinking that the opening might produce enough high velocity and high pressure airflow to create a very high-pitched whistle.

Have you taken a run at your dog with it?

T

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
Tom Schmitz is offline  
post #3 of 22 Old 04-01-2013, 12:16 PM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,344
No, I didn't notice any whistling noise, but I wear earplugs. Maybe it can do double duty as a deer whistle. I never thought of that: an added bonus!



planalp is offline  
 
post #4 of 22 Old 04-01-2013, 12:20 PM
4th Gear
 
Spec's Avatar
 
Join Date: Apr 2010
Location: Gateway to Death Valley!
Posts: 1,928
Quote:
Originally Posted by planalp View Post


At the risk of exposing sensitive military technology let me just say that this also an integral design component of certain aircraft that renders them practically invisible to detection, nuff said.

As a result your KLR is now imume to radar speed traps. $25? It's a bargain my friend. Go test it out and get back to us.

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

Last edited by Spec; 04-01-2013 at 12:55 PM.
Spec is offline  
post #5 of 22 Old 04-01-2013, 01:07 PM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,615
Garage
Quote:
Originally Posted by planalp View Post
No, I didn't notice any whistling noise, but I wear earplugs....
Wouldn't matter. I don't think you'd be able to hear it, especially given your misspent youth.

After consulting a learned paper on deer whistles and examining the device, I made some calculations.

Given what appears to the be the area of the opening and the depth of the channel, I figured that in the range of speed from 45 to 85 miles an hour the device would emit a high-pitched squeal in the 22-28 kilohertz range.

Deer hearing is best from 4 to 8 KHz, but they oughta be able to hear it. It might work better if it was chromed, though.

I still say you should take a run at the dog with it. Don't blame me if he pisses on your tire when you're not looking.

Spec's right. $25 was a bargain.

T

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem

Last edited by Tom Schmitz; 04-01-2013 at 01:09 PM.
Tom Schmitz is offline  
post #6 of 22 Old 04-01-2013, 01:13 PM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,344
Thanks for not laughing at me, guys. I figured you all would think it was a waste of money.



planalp is offline  
post #7 of 22 Old 04-01-2013, 01:18 PM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,615
Garage
No, I think it's a serious bit of gear with unexplored possibilities beyond controlling the front fender.

Radar, deer, hell it might even set of car alarms.

T

Tom [email protected]

The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother. -Philip Marlowe

'Why' and 'How' are words so important they cannot be too often used. -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
Tom Schmitz is offline  
post #8 of 22 Old 04-01-2013, 01:31 PM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,344
Actually, going back and re-reading some of these posts, I think I'm detecting some sarcasm. Oh well, I expected such. I stand fast in my declaration that this is a very well-designed and implemented add-on that efficiently negates what I consider a serious design flaw with the Gen2 front fender.

The guy that came up with it is a long-time KLR rider and aeronautical engineer. I think he knew what he was doing and did a good job with this thing. I really can't imagine going back to riding on the freeway or in high winds without it.



planalp is offline  
post #9 of 22 Old 04-01-2013, 02:28 PM
4th Gear
 
Spec's Avatar
 
Join Date: Apr 2010
Location: Gateway to Death Valley!
Posts: 1,928
Quote:
Originally Posted by planalp View Post
Actually, going back and re-reading some of these posts, I think I'm detecting some sarcasm. Oh well, I expected such. I stand fast in my declaration that this is a very well-designed and implemented add-on that efficiently negates what I consider a serious design flaw with the Gen2 front fender.

The guy that came up with it is a long-time KLR rider and aeronautical engineer. I think he knew what he was doing and did a good job with this thing. I really can't imagine going back to riding on the freeway or in high winds without it.

Aeronautical engineer huh? Coincidence? I think not.

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
Spec is offline  
post #10 of 22 Old 04-01-2013, 03:00 PM
2nd Gear
 
Join Date: Jan 2013
Location: Tampa
Posts: 377
I did this mod (attached photos) this weekend.

Mainly, it's just a cut-down front fender, a la BMW.

I also have a low fender kit and EM fork brace on there.

Rides nice...

Last edited by Dan Diego; 04-25-2013 at 05:52 PM.
Dan Diego is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Laminar Lip or Taller aftermarket screen Jigsaw Gadgets & Gizmos 35 09-09-2018 02:43 PM
Laminar Lip on a 2009 KLR J.D. 2008+ KLR650 Wrenching & Mod Questions 6 07-17-2010 08:01 AM
Cycra fender - Blue Gen2? Get the black one! Tom Schmitz 2008+ KLR650 Wrenching & Mod Questions 13 07-11-2010 04:36 AM
Laminar Lip Raceral Bike and Rider Gear 8 08-13-2007 06:08 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome