2011 KTM 350 SX-F: Rider Test

7 Июн 2015 | Author: | Комментарии к записи 2011 KTM 350 SX-F: Rider Test отключены
KTM 350 SX-F

2011 KTM 350 SX-F: Rider


Surprise! not going to wipe the 450cc bike off the face of the Earth. not going to bring in a new era of mid-size It’s not a revolutionary idea.

essentially a niche motorcycle fills a void.

It’s and it’s bad. It’s and it’s confused. It is, as you would from a machine that is to meld two worlds, a confused It is very much a Dr. Jekyll and Mr.

engine (or maybe two Dr. Jekylls a Mr. Hyde).  The first personality is low to mid. Off the bottom and into the the 350SXF has a nice torquey

When it is on the track all by itself it like a 450, but it runs much like a 1998 YZ400. Smooth, tractable, and metered. Not fast, but usable.

It like a 450—until you ride a 450 at the rpm range—then it feels like a The second personality shows as the engine climbs into the top Unlike a 450, the 350SXF all of its serious horsepower above rpm.

Since it makes its horsepower as the last rpm is wrung out of the at 12,200 rpm, you have to it to the rev limiter if you want to make the horsepower work for you (because at rpm below max, it makes and less horsepower). To be successful you to rev it…really rev it.

KTM says that the 350SXF 230.2 pounds, but on our scale it 237 pounds (without gas—which is how are weighed by the FIM and AMA). In a perfect the 2011 KTM 350SXF would 220 pounds. Why?

Because is the minimum weight limit for a in the 450 AMA National class. Additionally, the philosophy of building a mid-sized engine is that you can put it in a 250 frame and for the loss of horsepower with a overall weight. At 237 pounds, the is not light. Why?

Let’s that the typical 250F 220 pounds. To make it into a you have to add in the beefed-up engine steel clutch basket, frame and larger rear That is conservatively about 6 more. Next on the agenda is the that fuel-injected bikes weigh about 3 pounds than a carbureted bike of the electric fuel pump, gas tank and added magnets of the

Finally, KTM elected to mount an starter on the 350SXF. And, though the KTM 350SXF starter is slightly smaller than the unit, there are still the of the battery, starter gear and itself. All this weighs 5 more pounds (because you get to the weight of the kickstarter, kickstarter and idler gear). The total gain is 14 pounds.

When you add 14 to 220 pounds, you get a ballpark figure of 234 By this calculation, the 2011 KTM is about 3 pounds heavier it should be. For comparison, the 2011 KTM weighs 242 pounds.

The 5 extra pounds are attributed to the larger cases, bigger and longer frame rails.

MXA test rider loved the feel of the 350SXF. Once we issues with the fork and spring rates, we were to raise the fork height to the amount of turn-in we wanted. you get the balance right, this corners like it’s on We know for a fact that the Suzuki RM-Z450 turns but it sacrifices straight line for quickness in the tight stuff.

The KTM is a all-around chassis—it turns, but it make sacrifices in your at speed. The 2011 model is sleeker, smaller, lower and at the top (and KTM was smart enough to the footpegs far enough apart to a firm stance in the rough KTM went from the bottom of the to the top by making small changes model year.

A lot of the credit may go to the tunability of steel frames compared to cast or forged frames.

Who Would Likely Buy the KTM 350 :

Given the way that the KTM 350SXF to be ridden, which we will get to in in a minute, it is not a plug-and-play replacement for a motocross bike. The 350SXF and its the 450SXF, are night-and-day different, is surprising when they so many components. If push to shove, we’d say that are three main buyers for the KTM 350SXF:

(1) Vet riders: For a Vet class who would prefer to race a bike, but can’t afford to up 20 horsepower to his 450-equipped competition, the offers all the charms of a very 250, with the torque of a slow 450. Although are spots on the dyno curve it gives up as much a 11 horsepower to the

(2) Play riders: When you bound by any rules, and are just for a fun bike to ride, the 350SXF is a bit like owning a 450 at low rpm and a 250 at high

(3) 250 transplants: For a kid coming straight out of the 250 for the 450 class, the 350SXF offers the of a high rpm, pin it to win it, flat-out 250 the arm-stretching blast and bulk of a

(1) Gas line quick-release. Thanks to a quick-release, the gas tank can be removed the frame without any drama.

(2) kickstart. If you want a lighter you can install a kickstarter on the 350SXF. You get to the starter, battery and drive but you need to add a kickstarter, kickstart idler gear and case

(3) Multi-purposing. The water pump, and timing chain gear are all from the primary gear.

(4) tank. At 1.98 gallons of the KTM 350SXF tank is a half-gallon than the gas tanks on the Honda, Suzuki or Yamaha EFI bikes.

(5) frame. The steel frame is 5mm than the old frame and 15mm at the footpegs; KTM went through 24 frame variations in rigidity. As for the of the chromoly frame, the KTM frame is one lighter than any aluminum sold.

(6) Steel clutch basket. this may seem like a idea, we loved the steel basket on the 350SXF (it is similar to the used in the old-style KTM RFF engine). It not wear out, and since the spins one-third as fast as the and in a reverse rotation, its weight add flywheel effect.

KTM used the clutch basket becasue it has a profile that allowed the cases to be narrower.

(7) Lifting. KTM has provided a hand hold to the bike onto a stand.

(8) Nothing handles as well as a Five years ago MXA was saying handled as badly as a KTM.

(9) On the FIM’s two-meter-max test, the KTM out 115.7 dB. It also passed the 94 dB test at 4500 pm.

KTM 350 SX-F
KTM 350 SX-F

(1) Radiator tube. When water out of the overflow, the head pipe a steam cloud.

(2) Oil filler We had the oil filler cap on the right side of the unwind during a moto. We a smaller and sleeker KTM accessory cap.

(3) Water pump We knocked the water pump in a and dislodged the water pump a major water leak.

(4) preload ring. Hated it. much harder to use than year’s simple aluminum The new nylon preload ring easily and, for some it is very hard to turn.

KTM says not to hit it with a hammer and but we had no choice.

(5) Gear ratios. must work for someone, but not us. is a big gap between second and third.

(6) This would be an incredible at 220 pounds, amazing at 225 pounds, at 230 pounds, but the 237 pounds isn’t a mark in the “plus” category.

(7) The Excel rims on MXA ‘s race were buttery soft. We the spokes with a vengeance. KTM that they will all of the soft rims on the showroom

Recommendations for Improving the Bike:

(1) We went from the standard curve to the “aggressive” curve. is ignition timing only, not mapping.

To access the maps you KTM’s optional adjuster ($49.60 from your dealer).

(2) Gearing. We geared it one tooth (from 50 to 51), and MXA test riders chose to it down two teeth. The stock gap gears is too large. With the setup, the bike has a hard making the jump from to third, and it takes a long to get the rpm up to the rev limiter. Gearing it down one helps the second-to-third shift and the rev limiter into sight.

it down two teeth makes gear more usable. The pull may seem like a thing, but if you don’t get to 12,2000 you reaching max horsepower. Translated means that for every rpm 12,200 you are losing power.

(3) Exhaust system. We borrowed a Alessi replica Factory 4.1 system from FMF and it romped. It excellent performance, and the proof was MXA ’s 52-tooth aficionados returned to 51 because the power carried

(4) Springs. Every MXA test demanded that we go stiffer on the (front and rear).

(5) Locking gas We cut off the tangs on KTM’s irritating gas cap to the locking device (if you do it just the gas cap will click off and you won’t to use two hands to open it).

(6) vent hose. The stock radiator vent hose directly onto the head Bad idea. We installed a longer hose that dumped out the engine.

(7) Oil filler cap . If you wear boots with hinges, the can hook on the black plastic oil cap and unscrew it.

KTM 350 SX-F
KTM 350 SX-F
KTM 350 SX-F
KTM 350 SX-F
KTM 350 SX-F
KTM 350 SX-F
KTM 350 SX-F
KTM 350 SX-F

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