MOTOCROSS ACTION MID-WEEK REPORT

#WHIPITWEDNESDAY 

JUSTIN BOGLE 2021 High point national-26

Rider: Justin Bogle
Location: 2021 High Point National
Photographer: Chad Murray

TWO-STROKE SPOTLIGHT | 1989 HONDA CR125 

Bike: 1989 Honda CR 125
Owner/ builder: Rod Bushfield
Occupation: Farmer, Calgary Alberta Canada

BIKE DETAILS:
-Frame repainted in original R134 Fighting red
-Footpegs , IMS super stock
-Plastic by UFO
-Graphics by zero9MX

1989 HONDA CR125 
-Rear rim upgraded to 19 inch Excel
-Stainless spokes by CC products
-Works style pipe from Dutch Power Racing ( DPR )
-Aluminum works style tank from Factory Alu Parts in Italy
-Aluminum radiators by GPI
-Vintage rebuilt Pro Circuit silencer
-Shock rebuilt and revalved by Vintage  works MX

1989 HONDA CR125 

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ROUND 3 HIGH POINT NATIONAL RECAP | By Ben Bridges

track 2021 High point nationalThe Highpoint track from above. -Photo by Chad Murray

450 NATIONAL RECAP
DYLAN FERRANDIS 2021 High Point National-1
-Dylan Ferrandis goes 2-2 for his 2nd win of the season.
-It was Yamaha’s first win at High Point since 5/27/01, 20 years ago, when another French rider, David Vuillemin, also won.

david vuillemin 2004 millvilleThe last time Yamaha won the 450 class was 20 years ago with David Vuillemin. Ironically Vuillemin is Ferrandis’ trainer. 

-It was Yamaha’s 9th win at High Point.
-Ferrandis now has a narrow 3 point lead headed to Redbud in two weeks.

Ken Roczen 2021 High point national-31Ken Roczen lost the red plate, it goes back to Dylan Ferrandis for the second time. – Photo by Chad Murray

-After 3 rounds, American riders have yet to get on the top spot of the podium.
-Adam Cianciarulo goes 1-4 for 2nd overall.  It was his 2nd podium of the season.  A.C. is 4th in the points, 32 behind Ferrandis.
-Tomac wakes up to win the 2nd Moto and goes 6-1 for 3rd overall.

podium 2021 High point national-49Eli Tomac finally showed up in the second High Point. – Photo by Chad Murray

-Tomac now has won a moto, or been on the podium, for 8 consecutive seasons in the Premier class.-Roczen goes 3-4 for 4th overall.  He is now 3 points behind Ferrandis.
-Plessinger goes 5-8 for 6th overall.  A.P is still in 3rd place in the points.

250 NATIONAL RECAP
Jalek Swoll 2021 High point national-28Jalek Swoll and “Scuba” Steve Westfall celebrating his first win. – Photo by Chad Murray

-Jalek Swoll gets his first 250MX win at High Point with 1-3 scores.
-It was Husky’s first win this season and at High Point.

-Swoll joins R.J. Hampshire and Zach Osborne as riders to win on a Husqvarna in the 250 Class.

Jett Lawrence 2021 High point national-42Jett Lawrence has figured out an easy technique for popping podium bottles. – Photo by Chad Murray

-Jett Lawrence goes 3-2 for 2nd overall.  He has been on the podium all 3 rounds this season.  He is the points leader by 11 points over Justin Cooper.
-Justin Cooper goes 5-1 for 3rd overall, and he has also been on the podium all 3 rounds.

TAKE THE MXA SURVEY FOR A CHANCE TO WIN A SUNDAY MOTORS FLAT TRACKER

Don’t pass on this opportunity to win a free Sunday Motors bike! Completely fill out the annual “Reader Survey” below or click here. We’ll take your input to help improve both the web and monthly print content of Motocross Action. One lucky winner will be chosen at random to receive a bike from Sunday Motors. For a few minutes of your time, you’ll be entered into a drawing to win this Sunday Motors S 147 flat-track motorcycle. The S 147 model features a 150cc engine, Mikuni carburetor, 14-inch front/rear tire, stainless steel footpegs, bottom-mount brake caliper, YCF 310mm rear shock, 200mm rear disc, low-exhaust configuration system, and kill switch with leash. One winner will be chosen on July 6, 2021.

The MXA wrecking crew is busy year-round testing motorcycles and producing content for the magazine and website, but once a year we compile a “reader survey” to help us learn more about our loyal magazine/website readers and viewers. We take your input on the survey to help improve both the website and monthly print content coming from Motocross Action. This year, we are offering the super cool opportunity of winning a Sunday Motors 147 Flat Track motorcycle! Completely fill out the annual MXA Reader Survey by click here. One lucky winner will be chosen at random to receive a bike from Sunday Motors and you’ll be helping us out as we strive forward continuing to testing motorcycles, parts and gear. One winner will be chosen on July 6, 2021.

TALK MOTO WITH MOTO MINDED PEOPLE. JOIN MXA’S FACEBOOK GROUP CHAT

We love everything moto and want to bring all moto junkies together into one place to share their two cents, ideas, photos, bike fixes, bike problems and much more. To check it out first you must need to or already have a Facebook account. If you don’t, it isn’t much work and you could even have an alias so nobody knows it is you. To join click HERE. After you request to join we will accept your request shortly after.

MXA | MOTO | TRIVIA

Name all the riders in this photo and the year. Answer is at the bottom of the page.

THE JULY 2021 ISSUE OF MXA IS HERE NOW? YOU DO SUBSCRIBE DON’T YOU? IT IS THE BEST DEAL IN THE SPORT

What’s in the soon-to-be-released July issue of MXA? There are 30 pages of two-strokescoverage, including in depth coverage of the 2021 Wiseco World Two-Stroke Championship, a full test on a how Dick Wilk built an awesome KTM 300SX, a test of the 43.5 horsepower Pro Circuit KTM 150SX engine kit, a story on how a long forgotten memory resulted in an ultra trick 2003 Kawasaki KX125, a review of Scalvini’s stamped KTM 125SX exhaust system (did you know they also made stamped pipes as well as cone pipes?) and our cover story how to make your own version of the Yamaha YZ125 on the cover (it started as a $1000 Craigslist beater). And that’s not all, we do a thorough interview of a man that only industry insiders have ever heard of and few of them can pronounce his name (just call him Sel). He’s been a major player for decades, but you may only remember him best when we tell you that he is the man that convinced Roger DeCoster to jump ship from Suzuki and to KTM. Meet Selvaraj Narayana! And, much more!

HOW TO SUBSCRIBE TO MXA SO THAT YOU NEVER MISS ANOTHER ISSUE, PLUS GET A $25 ROCKY MOUNTAIN GIFT CREDIT TO COVER YOUR COSTS

If you subscribe to MXA you can get the mag on your iPhone, iPad, Kindle or Android by going to the Apple Store, Amazon or Google Play or in a digital version. Even better you can subscribe to Motocross Action and get the awesome print edition delivered to your house by a uniformed employee of the U.S. Government. Did we mention the $25 gift card for any part you want from Rocky Mountain ATV/MX? You can call (800) 767-0345 or Click Here (or on the box at the bottom of this page) to subscribe.

THE WILD AND WEIRD WORLD OF BRAKE FLUID

It was no easy chore for the braking industry to find a fluid that had the appropriate properties to handle the stressed conditions of a hydraulic braking system. The fluid needed to be light enough that the inner workings of the brake hydraulics would respond instantly to modulation, but compatible with plastic, metal and rubber components. Most important, the fluid had to remain consistent in temperatures that vary from 500 degrees (much hotter than the transmission) all the way down to freezing…and still be able to transfer through the brake line into the caliper pistons.

It’s due to high heat that one cannot simply fill the master cylinder with 30 weight motor oil. Regular oil would expand to the point of exceeding the relief space inside the master cylinder reservoir until the brakes locked up. In cold climates, standard oils will also thicken and cut the fluidity of the movement.

The fluid answer came in the form of a Polyglycol, a fluid that stayed consistent from hot to cold and had the ability to lubricated the moving pistons and seals. But brake fluid is much more complicated that all of that.

WHAT IS A HUMECTANT?
Try this experiment at home. Fill a cup to the brim with DOT 3 brake fluid and sit it outside on an unpainted surface. Within a short time, the brake fluid will overflowed.

So what? You ask. What you have just witnessed a brake failure in the making. Why? Read on. Brake fluid is not the same as other fluids (like motor oil). Hydraulic brake fluid must remain stable under high temperatures, provide lubrication for moving parts, seal the system and have a light enough viscosity to react quickly. Polyglycol fits the brake fluid profile to a T.

Unfortunately, glycol, an alcohol derivative, has one nasty habit. It absorbs water. In scientific terms it is a humectant; a substance that promotes the retention of moisture.

Which brings us back to our experiment. Why did our cup of brake fluid overflow while just sitting there? The brake fluid absorbed moisture out of the atmosphere, dispersed it throughout the brake fluid and increased its volume. Brake fluids ability to absorb moisture from the atmosphere is the cause of 95% of hydraulic brake failures.

WHAT IS BRAKE FADE?
Using two small brake pucks to stop a 400 rpm, ten-inch disc that is powered by a 50 horsepower engine generates heat. How much heat? Up to 500 degrees. This heat is transferred through the brake pads directly to the brake fluid. Even in a perfect state (with no water contamination) brake fluid can become so hot that it will boil. When it boils, it vaporizes into a compressible gas. Under braking, the vaporized gas will compress before the hydraulic fluid, and if there is any lever play left the pucks will compress later. Maybe too late! Your brakes get mushy, the lever goes slack and corners start coming at you fast. Bad news!

Keep in mind that we have yet to consider that the fluid has been contaminated with water. If you kept notes in high-school physics you will remember that water boils at 212 degrees, much lower than brake fluid. When water gets in your brake fluid it lowers the boiling point and causes the brakes to fade even earlier. This dilemma is known as vapor lock. A more proper term would be vapor fade since the gas produced by the boiling brake fluid rarely expands to the point of locking motorcycle brakes on.

HOW DOES WATER GET IN?
Hydraulic brake systems are sealed, so how does water get in? There is a good chance that the brake fluid was contaminated with H2O before you put it in your brakes. Or the moisture entered when the reservoir cover was off. It’s even possible for hydroscopic fluids to pull moisture past the master cylinder diaphragm. As a matter of fact, cheap brake fluids are so hydroscopic (water attractive) that manufacturers have started to use Teflon brake hoses to keep moisture from being drawn through the rubber.

Jonah Giestler rear brake caliper 2021 Supercross_Houston 1_Ride Now KTM-9530

WHAT IS DOT?
DOT is the acronym for the Department of Transportation. The DOT administers fluid regulations and monitors the quality of the brake fluids being sold. The DOT criteria is so high that there are only three companies in the United States that produce brake fluid. No matter whose name is on the can (as long as its American-made), you can guess that the brake fluid came from Dupont, Dow or Union Carbide. Europe also has only three fluid manufacturers and companies like Motul use these blends (which do offer a different profile than what is available in America).

WHAT IS THE WET BOILING POINT?
Brake fluid manufacturers, who are proud of their product, will list both the dry and wet boiling points of the fluid. The dry boiling point (which is the higher number) is taken when the fluid is in perfect condition. The wet boiling point is taken with the fluid fully hydrated and at equilibrium. The higher the wet boiling point the less susceptible the fluid is to absorbing water.

WHAT ARE CINITASTOKES?
The viscous performance of the fluid is also tested at hot and cold temperatures, and is measured in cinitastokes (cst). A lower cinitastoke count indicates a thinner viscosity. The thinner the brake fluid the more responsive it is to the hydraulic pressure emanating from the master cylinder. This is good because thicker fluids are slower to transfer energy from the lever to the pucks.

2020 Anaheim 1 Supercross Brandon Hartranft Front Brake

WHAT IS DOT 3?

In almost all cases DOT 3 is the least expensive and lowest performing brake fluid produced. The exception to this rule is Maxima DOT 3 550 with a 568 dry boiling point (the highest of any stateside-produced motorcycle brake fluid).
-Base: Synthetic Polyglycol base.
-Dry boiling point: Minimum required dry boiling point-401 degrees. ÿ
-Wet boiling point: Minimum required wet boiling point-284 degrees.
-Viscosity: Viscosity at minus 40 degrees-1500 cst.
-Compatibility: DOT 4 & 5.1.
-Color: Amber to clear.

WHAT IS DOT 4?

Most DOT 3 fluids meet DOT 4 regulations and vice versa (save Motul’s Racing Brake Fluid 600, which has incredibly high dry and wet boiling points of 585 and 421 degrees). Motul 600 exceeds DOT 3’s 1500 cst viscosity rating by two percent (at minus 40 degrees) to be labeled as such.
-Base: Synthetic Polyglycol base.
-Dry boiling point: Minimum required dry boiling point-446 degrees.
-Wet boiling point: Minimum required wet boiling point-311 degrees.
-Viscosity: Viscosity at minus forty degrees-1800 cst.
-Compatibility: DOT 3 & 5.1.
-Color: Amber to clear.

WHAT IS DOT 5?
The high boiling points of DOT 5 made DOT 5 the hottest fluid going in the late 80s (now only Harley-Davidson specs it). But the fluids syrupy nature wreaked havoc on the system if water or air entered. Since thick brake fluid won’t allow microbubbles to float to the top of the reservoir, unwanted air is dispersed throughout the system (making lever action mushy). Unlike a Polyglycol fluid, silicone-based brake fluids do not absorb water. Instead, the heavier water settles toward the bottom of the hydraulics, where the caliper resides. That means a liquid with a low boiling point is residing in the area that generates the most heat. If not bled, the caliper can also corrode.
-Base: Silicone base.
-Dry boiling point: Minimum required dry boiling point-500 degrees.
-Wet boiling point: Minimum required wet boiling point-500 degrees.
-Viscosity: Viscosity at minus forty degrees-900 cst.
-Compatibility: DOT 5 silicone base.
-Color: Purple. The purple color is a DOT mandate indicating a silicone base that cannot be mixed with the yellowish DOT 3, DOT 4 or DOT 5.1 fluids. When mixed, the fluids coagulate and turn to Jell-O. Unlike DOT 3, DOT 4 and DOT 5.1, DOT 5 will not damage painted surfaces.

WHAT IS DOT 5.1?
This European-produced fluid came into existence due to the fast moving, anti-lock braking systems (ABS) used on todays automobiles. DOT 5.1 is the thinnest fluid and offers the least hot-to-cold change in viscosity. This fluid has the highest wet boiling point of any of the synthetic Polyglycol.
-Base: Synthetic Polyglycol base.
-Dry boiling point: Minimum required dry boiling point-500 degrees.
-Wet boiling point: Minimum required wet boiling point-356 degrees.
-Viscosity: Viscosity at minus forty degrees-900 cst.
-Compatibility: DOT 3 & DOT 4.
-Color: Amber.

WHAT THE FACTORIES USE?
Although Team Honda, Kawasaki, Suzuki, Yamaha and KTM will use the best performing fluids produced, you can expect your motorcycle to be floored with low cost DOT 3 fluid. It is best to replace it after break-in with a racing DOT 3, 4 or 5.1 fluid (preferably with one that carries the highest dry boiling point you can find).

There are several important tips to follow when dealing with brake fluids:
(1) Fluids with high dry boiling points but low wet boiling points need to be changed often.
(2) Correctly changing brake fluid means completely flushing the system (gravity feed).
(3) Mixing new fluid with the old immediately lowers the boiling point of the new fluid.
(4) Although fluids with high wet ratings can run longer before water contamination becomes too great, it’s never smart to run fluid longer than six months.
(5) Remove fluid spilled on disc rotor and pads with contact cleaner immediately.
(6) Although brake fluid is packaged in a hermetically-sealed environment, it’s still not a good idea to purchase a dusty container of fluid that looks like it’s been sitting on the shelf for years.
(7) Seal the container immediately after use to keep moisture retention at bay

RAW VIDEO OF OUR 2-STROKE WORLD CHAMPIONSHIP KTM 300SX

COOPER WEBB NOMINATED FOR ESPY AWARD FOR BEST ATHLETE

Reigning Monster Energy Supercross Champion Cooper Webb Nominated for First ESPY Award in the Best Athlete, Men’s Action Sports Category  

Fan Voting Taking Place Now Through Friday, July 9 at ESPYS.com     

Press Release: ESPN recently announced the 2021 ESPY Award nominations and two-time Monster Energy Supercross Champion Cooper Webb is nominated for his first ESPY Award in the Best Athlete, Men’s Action Sports Category. 

The Red Bull KTM athlete had an amazing Supercross season winning 8 of 17 races including the final race of the season in decided fashion while claiming his second Supercross championship. Webb visited the podium 13 times during the season and now sits 11th on the All-Time wins list with 19 career victories. Remarkably, all those wins were captured in the last three seasons where Webb has won the title twice in three years.   

Supercross fans can cast their votes for Cooper Webb up through Friday, July 9 at 8:00 p.m. ET: Vote by clicking here – 2021 ESPY Awards – Best Athlete Men’s Action Sports. 

Red Bull KTM athlete Cooper Webb winning his eighth and final race of the 2021 season at Rice-Eccles Stadium in Salt Lake City, earning his second Supercross championship in three years.

Webb is competing in the Best Athlete, Men’s Action Sports category against Japanese snowboarder, Yuto Totsuka, Norwegian snowboarder Marcus Kleveland and two-time World Surfing League champion Gabriel Medina.  

Red Bull KTM athlete and two-time Supercross champion Cooper Webb is nominated for his first ESPY Award in the Best Athlete, Men’s Action Sports Category. Winners will be announced on Saturday, July 10 live from New York City on ABC.

This year marks the 29th iteration of the ESPY Awards which will be broadcast live on Saturday, July 10 at 8:00 p.m. ET on ABC from The Rooftop at Pier 17 at the Seaport in New York City. Sports fans can vote across 32 different categories for their favorite athletes, plays and sports moments from this past year.   

  Ryan Dungey

Ryan Dungey (four-time Supercross champion) was the last Supercross athlete to be nominated for an ESPY Award, in which he won twice in back-to-back years – 2015 and 2016 in the same Best Athlete, Men’s Actions Sports category. 

WANNA RACE IN SOCAL? NEED TO RENT A BIKE? FIND A PLACE TO STAY? JUST CALL STAPO WHEN YOU CAN TRAVEL AGAIN

Stapleton Husky TC250 project bike--1709Dennis Stapleton at work.

In his spare time, when he’s not testing with MXA, racing in a foreign country, going to Japan or helping many of his motocross buddies, MXA test rider Dennis Stapleton opens up his house, garage, bikes and mechanics to help riders who would like to come to SoCal on a motocross vacation—and now that the coronavirus pandemic is waning in the USA and the country is opening back up, foreign riders will be able to come to America to race, train and sightee again. You should plan ahead and make your reservations now for this upcoming Summer and Fall. Dennis offers full service to all of the Southern California tracks for racers or for play riders. Whether you want to rent a bike, move in for a week, race at Glen Helen or take motocross lessons—this is one-stop shopping. Just send them an email ([email protected]). If you’d like to live the SoCal lifestyle for a day, a weekend, a week, a month or three months, visit Dennis Stapleton’s’ website at www.knobbyshopsouth.org for more details!

FAST FREDDIE NOREN | MY WIFE WAS HIS MECHANIC FOR THE WEEKEND

CLASSIC PHOTO

Ryan Villopoto sitting down talking with Bones Bacon and Grant Langston. 


MXA TRIVIA ANSWER: From left to right: Justin Brayton (10), Jake Wiemer (21), Jeff Alessi (801 in the backround), Mike Alessi (800), Weston Peick (54), Josh Hanson (100), Matt Goerke (87), Nico Izzi (50).

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