classic

classic automotive reviews, specifications, insurance accident lawyers information, cars, motorcycle honda aprilia lamborghini yamaha Harley Davidson ATV news

Finance

Finance automotive reviews, specifications, insurance accident lawyers information, cars, motorcycle honda aprilia lamborghini yamaha Harley Davidson ATV news

insurance

Insurance automotive reviews, specifications, insurance accident lawyers information, cars, motorcycle honda aprilia lamborghini yamaha Harley Davidson ATV news

accident

accident automotive reviews, specifications, insurance accident lawyers information, cars, motorcycle honda aprilia lamborghini yamaha Harley Davidson ATV news

news

news automotive reviews, specifications, insurance accident lawyers information, cars, motorcycle honda aprilia lamborghini yamaha Harley Davidson ATV news

Home » BMW Motorcycle, motorcycle

BMW K1300S 2009

Submitted by on March 29, 2012 – 11:46 pmNo Comment

Over the course of a day that saw just a couple ticks less than 250 miles on the clock, we would have plenty of time to suss out if the changes had improved throttle response. We’re glad to report the hunting and surging, created by inconsistent idle speed control on the 1200, is no longer. However, a new or different problem remains – though it’s not a deal breaker.

A number of riders, including me, discovered what can best be described as a flat spot in fueling. It often surfaced after reapplying throttle from closed to open, particularly after a length of time on overrun. The problem didn’t seem related to rpm, gear selection, etc. There’s no surging or rugged abruptness, but imagine dialing the throttle back on, say, after passing the apex of a long sweeping bend only to have the engine respond with moderate but notable hesitation. Otherwise, throttle response is good, and despite its ferocity, the big mill is exceptionally smooth with only upper revs rousing some vibration.

This flat spot only lasts for a heartbeat, but one potential drawback can be less-than-smooth cornering. When power does come back in, it causes the front end to unload slightly with some chassis pitch as a result. A patient or skilled pilot can ride around this little glitch, but it’s possible a rider might start anticipating it, which in turn could lead to some choppy riding.

It’s hard to pin-point the source of this mildly annoying gremlin as it could be the result of numerous factors; suffice it to say that fuel mapping needs a few more tweaks.

Claimed output from the S model is 175 hp at 9,250 rpm and 103 ft-lbs at 8,250 rpm, with a claimed boost of over 7 ft-lbs between the 2K and 8K rev range when compared to the K1200S. That tremendous torque runs through a new clutch and tranny improved for smoother, more precise shifting. Indeed, BMW has hit the mark here. Shifting action is Japanese sportbike-like: light, accurate and often transparent.

If you’re as lazy as I am when it comes to shifting but don’t want to risk bunging up the tranny with fancy clutchless upshifts, BMW has made the Gear Shift Assistant from the HP2 Sport as an available option on the K1300S. This gizmo was normally only found on race bikes, allowing a racer full-throttle upshifts without concern for blipping the throttle. This “quickshifter” cuts fueling and ignition just long enough to slip into the next higher gear. For a small sum it can now be yours on this street-legal missile of a bike.

When power from the mighty German inline-Four leaves the engine output shaft, it does so via a new and improved shaft final drive that employs a 2-stage damping system to mitigate forces transmitted from the engine to the rear wheel. A spring and friction disc in Stage 1, and a series of three different hardness polyurethane elements in Stage 2 all but eliminate driveline lash and jacking typical to most shaft drives. Only ham-fisted throttle action will make some jacking noticeable.

otomaps.com source article: www.netcarshow.com www.motorcycle.com www.roushperformance.com

Leave a comment!

Add your comment below, or trackback from your own site. You can also subscribe to these comments via RSS.

Be nice. Keep it clean. Stay on topic. No spam.

You can use these tags:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

This is a Gravatar-enabled weblog. To get your own globally-recognized-avatar, please register at Gravatar.

*