Tag Archives: KnowItAllI

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KTM 85SX JETTING: MR KNOW-IT-ALL

Dear Mr. Know-It-All,

I’ve a 2011 KTM 85 that had main plug fowling issues that we fastened by placing the throttle-slider needle clip to the second notch to the highest.
When it was fowling a plug, it used to begin second kick each time chilly; now, it takes 15 odd kicks to get it to fireside up. When it does begin, it revs to full throttle with out me touching the throttle till it’s heat. The bizarre factor is, for those who began it within the morning and let it settle down utterly, it could begin second kick like a traditional two-stroke.
You appear to repair everybody’s issues, so we thought we might strive you. Thank you a lot to your time.

Flynn

through [email protected]

thumping at erzberg

I personally despatched a missive to my buddy Dick Wilk for his recommendation right here, because it may very well be a myriad of points plaguing your steed. If the throttle shouldn’t be sticking open, then you’ve got an air leak. In Dick’s phrases: “This can come from the base gasket, intake manifold, center case gasket or crank seals. You can have the engine pressure checked to determine where it’s leaking, or send the engine to Dick’s Racing for evaluation. A medium-sized ice chest works great for shipping engines.”

last years top clamp fits perfectly
Last years prime clamp suits completely on the brand new TBI 300, and Enduro Engineering is providing spacers for the 23 mannequin (plus the the older machines).
last years top clamp fits perfectly
last years top clamp fits perfectly
last years top clamp fits perfectly

Every lanky pilot who owns certainly one of these beautiful machines goes by your similar dilemma, as the brand new KTM 300 has been re-engineered from fore to aft. The new bar mounts usually are not rubber mounted and have two bar positions as a substitute of 4. They are available in place 1. Flip them round to 2 to open it up. As of now, a number of firms are engaged on a extra adjustable bar mount. We referred to as Jeff Slavens, and he instructed us that final yr’s clamp suits completely and offers you six out there bar positions. Jeff stated that Flo Motorsports has 4mm-lowered pegs, and Seat Concepts has a Comfort tall saddle that’s 19mm taller than the stocker.

If you don’t thoughts displaying your ignorance for the world to see, who’re we to disclaim the chance? Send proof of your failures to [email protected] orMr. Know-It-All
Dirt Bike P.O. Box 957
Valencia, CA 91380-9057

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WHY DO TWO-STROKES BEAT FOUR-STROKES AT ERZBERG? MR KNOW-IT-ALL

Dear Mr. Know-It-All,

I just watched the Red Bull video from Erzberg and was curious as to why there are no four-strokes competing in that race? They are at the front of the Enduro GP world and, of course, all facets of motocross. I would think that since they’re all electric-start and fuel-injected, the four-stroke’s ability to grab traction and not spin would be an advantage.

“Front Curious George”

via [email protected]

If you paid close attention to the Erzberg show, you would have seen GasGas Factory Racing’s Enduro GP World champion Andrea Verona winning the prologue on his 350 four-stroke. Andrea Verona is hugely successful winning the FIM E1 Enduro World Championship in 2020, 2021 and 2022, as well as the FIM Enduro GP World Championship in 2022. So, there is no doubting Andrea’s ability, and without enough time to set up a 300 two-stroke, he raced his factory 350, naturally with suspension settings and tire combos that work on Erzberg’s rocky skin.

Over the last decade, the sport of Hard Enduro has morphed from tough and technical to brutal. There have been several catalysts to this evolution—the 300 two-stroke and traction are at the forefront. David Knight, Taddy Blazusiak, Graham Jarvis, Jonny Walker, Alfredo Gomez and Mani Lettenbichler have dominated the mountain on two-stroke machines. Gummy tires and mousse insert technology have given the riders crucial traction on the trials-based obstacles. And, back to the question as to why there are no four-strokes at Erzberg: The reality is that the new 300 two-strokes throttle down far better than a four-stroke, and they do not flame out like four-strokes suffer when short-shifted and attempting to carry a high gear to enhance traction and reduce spin. The bottom line: The 300 two-stroke won’t stall; they make traction, and they’re easier to handle in the Hard Enduro rock-and-roll environment.

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If you don’t mind displaying your ignorance for the world to see, who are we to deny the opportunity? Send evidence of your failures to [email protected] or Mr. Know-It-All
Dirt Bike P.O. Box 957
Valencia, CA 91380-9057

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DEALING WITH ROCKS AND ROOTS: MR. KNOW-IT-ALL

Dear Mr. Know-It-All,
I purchased a used YZ250 after riding an ’04 XR250, and I primarily ride off-road. The area where I ride has lots of rocks and roots, and while my old XR was slow, it was extremely smooth on the trail. However, the YZ has a strong engine but the suspension feels off, as it doesn’t seem to handle the rocks well. I would appreciate any advice you can offer. I understand that the YZ is a motocross bike, but it’s really rough on me!
– Todd
via [email protected]

Todd, I want to inform you, without any harsh criticism, that the most important aspect to consider when riding in rocky terrain is the suspension. Serious riders in Colorado typically have their bikes set up with lighter springs and valve adjustments. If you’re using stock motocross suspension, riding on rocks, stones, roots, and harsh terrain will result in a rough ride. You can try adjusting the compression settings in the fork and shock to make them softer. Additionally, using softer springs would likely be beneficial. However, my wise suggestion is to consult with a professional suspension tuner who is knowledgeable about your riding area and the varying terrain conditions. They will take into account your height, weight, and riding ability to customize the suspension settings for optimal performance on the specific landscape.
One more thing to consider is the impact of tires and air pressure on the feel and traction of your bike. In Colorado, riders commonly use rear tires with a sticky compound and a foam insert for extra cushioning. They also either use a Tubliss front system, which allows for lower air pressure without the risk of pinch-flats, or a plush front bib mousse for added comfort and traction.

If you don’t mind showcasing your lack of knowledge to the world, we won’t deny you the opportunity. Send evidence of your failures to [email protected] or Mr. Know-It-All
Dirt Bike P.O. Box 957
Valencia, CA 91380-9057

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