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Old 03-24-2013, 03:05 PM   #31
bigfishs
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Joined: Oct 2007
Location: albany, NY
Oddometer: 46
Did this today on my DG muffler KLR250. I used a section 48 inch long coil of the 1/4 inch cloth from Lowes (15 dolla for the roll, about half of it remaining). The DG can only fit about 16 inches in, unlike my wife who tops out at 6, so I did a 16 inch tapering to 3 over 48 inches. Id say its close to stock now noise wise and a bit slower than just the DG muffler. My spark arrestor cone wouldnt fit back in either. Much less annoying than before and lets face it, if we wanted high performance and light we'd be riding KTM690s
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Old 03-24-2013, 03:58 PM   #32
Yam2Yam2 OP
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Joined: Jul 2012
Oddometer: 22
Got some video of my bike, today. It's a bit windy, sorry about that. I have the recording volume set as it was for the DB meter. Some of you might have trouble cranking your playback volume high enough to hear clearly...

Here's me taling into the camera from 2 feet away: http://youtu.be/il7l4cKMoo8

Starting the bike: http://youtu.be/_6GXoq0tBhc

At 9 seconds, I blip the throttle hard, with the muffler pointed at the camera, 50 feet away. I take off gently, as I normally would if people were outside. Kickstand up gives some noise perspective. You can hear a jet in a landing flyby at the end: http://youtu.be/Ix7k8natlF8

I ride by at 35 mph, accelerate fairly hard (for city), ride by again (you can hear the mechanical noise as loud as the exhaust pulses), then get on it fairly hard riding away from the camera, and accel about 3/4 throttle toward the camera. I'm going almost 40 just before I hit the driveway: http://youtu.be/pAnBfaeP6AY


I'm very pleased with how the bike sounds when riding it. Growly enough for enjoyment, quiet enough for riding when people are outside.
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Old 03-25-2013, 06:58 AM   #33
el capitan
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Joined: Oct 2012
Location: Vienna, Austria
Oddometer: 62
Back in 87 I installed a straight-through-muffler meant for a XT 500 (silver tank) to my 83 KTM 500 GS Rotax. It was loud as hell, not even bearable back then. I solved the issue with a cone made from steel mesh and filled it with porous materia (pieces of bricks and similar), then closed the cone. I installed a piece of round aluminum to four cross-wires drilled through the endcap, on which the pin of the cone rested. Result: Sporty, but not too loud and it only backfired when I had to switch to reserve. Your approach with mesh is very similar in its effect.
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Old 04-02-2013, 04:48 PM   #34
bryantjt
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Joined: Apr 2006
Location: Far Upstate NY
Oddometer: 986
What happened to the pictures and videos?

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2006 V-Strom 650
2006 KTM 450
2006 KLX250S (9000 miles of fun) - gone
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Old 11-05-2014, 12:11 AM   #35
katone
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Joined: Jan 2013
Location: San Diego
Oddometer: 36
Quote:
Originally Posted by bryantjt View Post
What happened to the pictures and videos?
Reup pics would be nice OP
Thanks
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katone screwed with this post 11-10-2014 at 10:34 AM
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