Friday, March 31, 2017

Indian files 'Harley-killing' patent

Polaris Industries, maker of Indian motorcycles, has patented an ingenious means of circumventing DOT and EPA sound regulations, effectively legalizing exhausts that produce an ear-splitting 129 dB sound volume. Backmarker learned of this new exhaust technology when one of our contributors discovered Polaris’ patent application.

At first, Polaris refused to comment. But when we said we’d break the story anyway, Polaris’ spokesman admitted that Indian’s ‘Loophole™’ mufflers will be available this fall on 2018 model motorcycles.

Although Polaris wouldn’t tell us how the Loophole™ muffler works, the company’s patent application shows a system of in-muffler microphones, amplifiers, and speakers that will allow the rider to switch on the electronic amplification of the exhaust sound.

Polaris’ patent means its motorcycles can be vastly louder than competitors’ bikes, without violating the letter of federal regulations.

While federal regulations mandate a maximum noise level of 84 dB, that’s for total vehicle noise at 35 mph. Polaris designers realized, however, that those rules do not apply to stereo sound systems. Obviously, DOT’s sound tests take place with stereos off.

“We expect our Loophole™ optional muffler package to be the most profitable accessory in the Indian catalog, come 2018,” Polaris’ spokesman Luke Solicitano told me. “Our customer surveys have shown, over and over, that the one area where we’ve had trouble competing with Harley-Davidson is exhaust volume. People tell us, ‘Harley’s are just louder’. Well, that ends now.”

Off the record, one Polaris engineer told us that the increase is in sound volume only, not power—which is critical, because increasing power would impact the specification of everything from clutch to brakes.

A spokesman for ABATE North Dakota said, “If it’s true that the Loophole™ system produces nearly 130 decibels, this is the most important safety development since wrap-around sunglasses.”

Because the decibel system is based on a logarithmic scale, the Loophole™ exhaust’s 129 dB output is actually over 20 times as loud as DOT regulations specify, yet it’s perfectly legal because technically, it’s an unregulated stereo sound system.

“With the switch in the ‘off’ position,” Polaris’ Solicitano told Backmarker, “It’s not any louder than the stock exhaust, which we calibrate to be right on the DOT’s 84 dB limit. But when you hit the switch, it’s as loud as the flight deck of an aircraft carrier during a catapult launch with full afterburners. We tested a prototype for a few seconds outside the Buffalo Chip last year and about ten guys jumped right out of the kuttes.”

Again, off the record, one Polaris engineer told us that Indians will get a slightly uprated generators with higher amp fuses to handle the electrical drain of the in-muffler amp. The speaker is believed to have been developed in concert with Bose.

Meanwhile Harley-Davidson executives, on learning of the Loophole™ patent have apparently scheduled another trip to the White House.

One Harley exec who wished to remain anonymous because the White House trip hasn’t been officially announced told me, “Polaris just wasted a bunch of money on patent lawyers. After our meeting, Trump’s going to eliminate the DOT anyway.”

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