Made in America

beeper*71

This space for rent
New American made motorcycle that's not a cruiser! :dance:

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160 HP and excellent torque curve...Drooling here.

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the exhaust looks very....cobbled by a chimp and the ...umm....wasps ass? hanging out past the seat has me scratching my head...outside of that im drooling too....

tho i doubt much of the actual parts are truely american made...lets face it theres american made, american built, american designed but everything has a few parts made elsewhere regardless of what it is
 
The in-line engine configuration has me completely turned off. :dgt:
With that much HP every tim you blipped the throttle it will want to lay on its' side.[smilie=2:

Ever watch your front fenders when you blipped the throttle of your car? Now imagine that with only 2 wheels. :doh:
 
The in-line engine configuration has me completely turned off. :dgt:
With that much HP every tim you blipped the throttle it will want to lay on its' side.[smilie=2:

Ever watch your front fenders when you blipped the throttle of your car? Now imagine that with only 2 wheels. :doh:[/QUOTE]


Not really an issue here, Honda's ST 1100 and 1300 have the same V-4 configuration with the inline crank. Firing order plays a role along with transmission design, balance shafts etc. Others that come to mind are the GoldWing, Moto Guzzi, BMW.....I've ridden all these without the bike flopping over whilst blipping the throttle. ;)

Some more info.

From the Motus press release (sorry about the formatting)

“To create the ultimate sport tourer, we had to either work around the shortcomings of available engines or develop a purpose built engine for our application” said Brian Case, Vice President / Design Director at Motus.
Domestically made streetbikes are all currently powered by v-twin engines, which did not meet performance or efficiency targets for the MST concept. “The domestic motorcycle market is dominated by air-cooled v-twins, but to be successful in the long term, the MST has to present clear improvements over existing technology and not be another “me too” product,” said Case.
After a global search and lengthy discovery process, Michigan-based Katech Engines emerged as the clear choice to help Motus design and build the KMV4.
“When researching quality engine builders, Katech was identified as a powerhouse of engine durability, engineering, and manufacturing,” said Lee Conn, President of Motus. “Katech has over fifty endurance racing championships, experience developing new engines for OEM’s, and access to the most advanced engineering and prototyping technologies. We couldn’t be happier with our decision to retain Katech for the KMV4”.
“Katech is thrilled to finally announce our involvement with Motus,” said Fritz Kayl, co-founder of Katech. “The KMV4 is an exciting project that fits well within our capabilities and experience. We incorporated technology from our race programs to increase durability, performance, and efficiency. We are ahead of schedule and are refining the KMV4 into the most reliable motorcycle engine made,” said Fritz Kayl.
“We didn’t focus on maximum horsepower; we focused on heightening the rider experience. To us, that means tons of torque over a wide RPM range, low vibes, high efficiency and bulletproof durability. Enter the KMV4, a liquid cooled V4 with gDI,” said Case.

If you've never heard of Katech clicky here for some backround.

A very interesting thing about this new engine is the fact that it features direct fuel injection. Very high tech stuff that, this will be the first 4 stroke motorcycle engine to be made available with this (expensive) technology.
 
Not really an issue here, Honda's ST 1100 and 1300 have the same V-4 configuration with the inline crank. Firing order plays a role along with transmission design, balance shafts etc. Others that come to mind are the GoldWing, Moto Guzzi, BMW.....I've ridden all these without the bike flopping over whilst blipping the throttle. ;)

How is the firing order going to affect the rotational direction of the crankshaft?
Ford engines use a different firing order than GM or Mopar but they ALL develop torque twist.
Balance shafts are great for eliminating vibration, but not torque twist.
Transmission design may help while under load by making a right angle to the drive sprocket.
A Gold Wing I HAVE owned and it had very noticeable torque twist under load.
I've ridden a Beemer boxer and the twist on that was worse than the Wing.
I've never ridden a Guzzi but I do know someone that owns one and he does admit to it having torque twist.
All of these are shaft drive which will exaggerate the twist under load.

A super rigid frame will help the twist but there is no way possible to engineer out the rotational inertia of an engine. Any time an engine is under load it applies force in the opposite direction of the crank rotation. It's basic physics. :huh:
 
Agreed there is a noticeable twist on those machines, especially when sitting still and revving the engine. Once underway this sensation is much less noticeable, certainly not enough to adversely affect control and handling of the machine. Case in point my BMW is the best handling, most stable bike I've ever ridden...crank twist be damned. ;)
 
im not sure id call it naked so much as..prepared for a fight..and damned sexy..more or less what id want mine to look like
 
That looks like what those ugly new Harley's are TRYING to be! I like this a TON better!!!!
 
I gotta agree with 68R/T. Dirty-sexy as that bike is, I'd rather see a transverse-mounted engine. I'm not even concerned with torque twist, though... the engineer in me knows that not having to change the direction of power through 90° makes for a far-more efficient powertrain. Shaft drive is more reliable, but chain drive is a ton more efficient. Not many shaft-drive race bikes out there, are there?
 
Shaft drive is more reliable, but chain drive is a ton more efficient. Not many shaft-drive race bikes out there, are there?

Too true Doc, the chain is the most efficient. But for street riding, shaft is the only way. Most shaft systems will outlive the rest of the bike, no breakdowns, almost no maintainence and a lot less noise.
 
You're right, but to me bikes are all about trying to kill yourself anyhow... so I don't care about the noise or maintenance. If I could transverse-mount the engine in my car and chain drive it, I probably would. My mind concentrates on the efficient. ;)
 
You're right, but to me bikes are all about trying to kill yourself anyhow... so I don't care about the noise or maintenance. If I could transverse-mount the engine in my car and chain drive it, I probably would. My mind concentrates on the efficient. ;)


Go for it, I envision a Fiero with a sprocket driven live axle...wicked silly. :D

A sport touring bike is certainly not a racebike but shaft drive behind a powerfull engine can get you killed just as fast. [smilie=i:
 
"You can killed walking your doggie!" --Pacino :D

Seriously, I've never been a street-bike guy so I'll just keep quiet now. However, when it comes to off-road, y'all can keep your 3- and 4-wheeled ATVs, UTVs or whatever they're called, etc. I'll take a non-race thumper dirt bike every time (think Honda XR or Yamaha WR). 2-strokes are a hoot, no doubt, but I don't want to maintain one.
 
Sorry Doc, but the WR falls into race bike class. It's basically just a YZ with a different suspension, exhaust cam and CDI tune. This comes from someone who has owned (and still does) a couple of WR450's. One since new when I assembled it from the crate at the Yammy dealership I worked at in MS in 2003. That one was put straight to Dual Sport duty before it ever left the shop. 6k miles later the engine shit it's guts out the front of the crankcase all over the highway in PR for all the world to see. Luckilly I was able to keep it upright and pull onto the center median of the highway. Fast forward to 2010, swapped in a used engine and started riding it again only to have that engine blow the rod out the bottom of the crankcase coming out of a hairpin turn while I was still leaned over hard on a supermoto track. Ouch... The landing after the highside hurt, ...a lot!

I've never owned a XR but their reliability is legendary. If anything, I'd have to call the WR's track record "Infamous" at this point. They can't hold a candle to the XR as far as reliability goes.

EDIT: The exception to this would probably be the WR250X Dualsport (dirt or SuperMoto). Despite the name, it's not based off the WR250F. It's more akin to the XT250 but modernized to bring it up to current tech engine and suspension wise. They are showing to be a fairly durable bike ranking right up there with the XR's, KLX's and DRZ's for reliability.
 
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