YOU GOTTA SEE THIS! THE THREE-WHEELER IS BACK...SORT OF
USED IT, ABUSED IT, TESTED IT: STEAHLY OFFROAD YZ450F FLYWHEEL WEIGHT
Steahly’s nine-ounce flywheel weight was designed to harness the power of current generation 2010-2013 YZ450Fs. Steahly cuts a nine-ounce ring of steel on a lathe. The ring is machined to close tolerances for an exact fit on the stock flywheel. Nine ounces wasn't a magic number, it was simply the most weight that Steahly could fit into the space available.
VERDICT: With the Steahly-modified flywheel the YZ450F pulled more smoothly and gained traction in places where it would previously spin. The power was more usable and the chassis liked the more planted feel. The extra inertia of the heavier flywheel not only resisted speeding up, but it also resisted slowing down. We thought this might be a negative, but the heavier flywheel helped under braking and transitioning through corners. Most MXA test rider thought the flywheel weight actually helped the handling of the YZ450F. This made for a smoother transition from full-speed to full-stop. And, it reduced the chance of flame-out. $119.95–www.steahlyoffroad.com or (800) 800-2363.
KIWICROSS: BEN TOWNLEY GIVES YOU AN INSIDER'S VIEW OF NEW ZEALAND MOTOCROSS
THIS WEEK’S BIRTHDAYS: DAVI’S GOT A LOT TO CELEBRATE
Feb. 15...Davi Millsaps 1988
Feb. 16...Don Emde 1951
Feb. 16...Valentino Rossi 1979
Feb. 16...Josh Hansen 1984
Feb. 17...Fredric Bolley 1974
Feb. 17...Heath Voss 1978
Feb. 17...Stefy Bau 1977
Feb. 18...Kevin Foley
Feb. 18...Tyler Evans 1980
Feb. 19...Preston Petty 1941
Feb. 19...Troy Adams 1983
Feb. 19...Michael Young 1981
Feb. 19...Ian Trettel 1992
Feb. 20...Dano Legere
Feb. 20...Ray Tetherton
Feb. 21...Marc De Reuver 1983
Feb. 22...George Washington 1732
Feb. 22...Robert Distler
Feb. 24...Guy Cooper 1962
Feb. 24...Scott Sheak 1974
Feb. 24...Alley Semar
Feb. 25...Craig Anderson 1978
Feb. 26...Jean-Sebastian Roy 1974
Feb. 26...Billy Laninovich 1983
ASK THE MXPERTS: IS RYAN DUNGEY THE FIRST?
Is Ryan Dungey the first rider to ever win an AMA National Championship on a European bike?
Far from it. Going backwards through time, Grant Langston won the 2003 125 National Championship on a KTM. Kent Howerton won 1976 500 National Championship on a Husqvarna, Jimmy Ellis won the 1975 Supercross Championship on a Can-Am. Gary Jones won the 1974 250 National Championship on a Can-Am (Can-Am was technically a Canadian motorcycle, but it was owned by an Austrian company and it used Austrian Rotax engines). Brad Lackey split his 1972 500 Championship season on a CZ and a Kawasaki. Mark Blackwell won the 1971 500 AMA National Championship on a Husqvarna.
Mark Blackwell was the first-ever AMA National Champion. He won the 1971 AMA 500 crown in 1971 for Husky.
Gary Jones raced a Can-Am to the 1974 title (Can-Ams were built in Canada with Austrian engines).
Jimmy Ellis was Gary Jones' Can-Am teammate.
Brad Lackey won the 1972 500 Nationals title on a Kawasaki, but raced some races in the series on a CZ.
Kent Howerton won the 1976 title on a Swedish-built Husqvarna.
Grant Langston won the 2003 AMA 125 National Championship for KTM.
A PIXELATED VIEW OF THIS WEEKEND’S DALLAS SUPERCROSS TRACK...STARRING THE GREEN ARROW
THE THREAT OF E15 FUEL LOOMS LARGE ON THE HORIZON
E15 is a fuel blend that is made up of 15% ethanol mixed with 85% gasoline. This blend is not approved for use in motorcycles, ATVs, boats, lawn mowers and other engines, and may even damage them and void warranties. Most gas station carry E10 (10% ethanol) which is approved by the motorcycle manufacturers. Ethanol is grain alcohol produced from corn that is mixed with gasoline to produce an ethanol-gasoline blend fuel.
Among the dangers of E15 is the fact that riders who fill up with E10 could unknowingly refuel with residual E15 left in a blender-pump hose. A blender pump dispenses different fuel blends through the same hose, such as E10 and E15. When a customer buys E10, as much as a third of a gallon of residual E15 is left in the hose, which can inadvertently get into the next customer's vehicle while fueling with E10. A third of a gallon may not seem like much, but on motorcycles that only hold 2 gallons it is significant. To lessen this danger the EPA has a rule that says that the consumer must buy at least four gallons of E10 to dilute any leftover E15. The AMA and motorcycle manufacturers complained to the EPA about the 4 gallon rule, because bike gas tanks and gas cans don’t always hold four gallons.
In response, on February 7 the EPA posted a new option that said that retailers who use a blender pump to sell E15 and E10 fuel through the same hose must also have a separate E10 fuel pump. Those retailers would be required to have a label on the blender pump that reads: "Passenger Vehicles Only. Use in Other Vehicles, Engines and Equipment May Violate Federal Law." Retailers would also be required to have signs indicating the location of the dedicated E10-or-lower fuel pump. There would be no minimum-fuel-purchase requirement at that pump. And, of course, retailers who want to sell E15 also have the option of having a dedicated E15 pump or hose, or a pump that dispenses E15 and higher ethanol blends through a single hose.
PHOTO WITHOUT A CAPTION...
MEET A.J. CANTAZARO: PREPPING FOR THE PRIVATEER LIFE FOR THE 2013 SEASON
ASK THE MXPERTS: THE NEVER ENDING KX450F LINKAGE RUMOR
I was interested in getting a Pro Circuit link to lower the rear of my 2010 Kawasaki KX450F. I’ve heard that Pro Circuit links are the exact same length as the stock link. True?
False. The Pro Circuit link is 1mm longer (136mm) than the stock 2010 Kawasaki KX450F link. Kawasaki has never made a 136mm link. The longer link will lower the height by about 10m and stiffen up the initial part of the stroke. This makes a noticeable difference in improving the handling, getting your feet closer to the ground and reducing wallowing.
KTM’S CHASE BELL AND DAKOTA ALIX PREPPING FOR THE AMATEUR SEASON
USED IT, ABUSED IT, TESTED IT: IRP KAYABA COMPRESSION CLICKERS
The IRP compression adjuster doesn’t require any tools to change the clickers on CRF450, KX450F, YZ250F and YZ450F Kayaba forks, but (not 2013 air forks). With the IRP clickers MXA test riders could simply pulled over and make changes to the easily accessible IRP knobs in a matter of seconds. This saved a lot of time, especially during the rush of practice.
VERDICT: We have fiddled with other no-tool suspension clickers and they always wobbled, slipped or stuck out like a sore thumb, but IRP Clickers fit perfectly and nestled in the recess of the fork caps. The IRP Clickers mated perfectly to the stock adjustment screw and stayed that way when running through the range of clicks. MXA test riders loved being able to make quick and easy compression adjustments without having to return to the pits. $52.95–www.irp-llc.com or (503) 860-5712.
PRO CIRCUIT’S HAAN WHEELS ASSEMBLIES AVAILABLE NOW
CNC machined from billet 6082 alloy, Haan hubs are made to OEM brake disc and sprocket specifications. They use oversized bearings for more durability and are laced with high-grade stainless steel spokes. The complete wheels are assembled with RK Excel rims or optional Excel A60 rims. The retail price for full-size bikes is $649.95 front and $749.95 rear. For more info go to www.procircuit.com.
JUSTIN BARCIA’S SAN DIEGO DETOUR: THE MOVE THAT MADE CHAD REED ANGRY
CURRENT AMA 450 SUPERCROSS POINTS
(After 6 of 17 races)
1. Davi Millsaps (Suz).............132
2. Ryan Dungey (KTM)...........113
3. Ryan Villopoto (Kaw)..........105
4. Trey Canard (Hon)..............105
5. Chad Reed (Hon).................97
6. Justin Barcia (Hon................83
7. Andrew Short (Hon).............83
8. James Stewart (Suz)............74
9. Justin Brayton (Yam)............67
10. Broc Tickle (Suz)................57
Other notables: 11. Matt Goerke (56); 12. Jake Weimer (48); 13. Mike Alessi (40); 14. Josh Grant (40); 18. Weston Peick (29).
CURRENT AMA 250 WEST SUPERCROSS POINTS
(After 6 of 9 races)
1. Ken Roczen (KTM)...............138
2. Eli Tomac (Hon)....................121
3. Cole Seely (Hon)...................95
4. Jason Anderson (Suz)...........88
5. Kyle Cunningham (Yam)........83
6. Martin Davalos (Kaw)............82
7. Zach Osborne (Hon)..............82
8. Joey Savatgy (KTM)..............62
9. Christian Craig (Hon).............62
10. Jessy Nelson (Hon).............60
Other notables: 11. Tyla Rattray (58); 12. Austin Politelli (57); 14. Malcolm Stewart (46); 17. Josh Cachia (29); 19. Jean Ramos (21).
MORE STEFAN PIERER NEWS: THE DUKE 390 IS COMING TO THE USA IN 2014
KTM CEO Stefan Pierer told the Business Standard that the Duke 390 street bike will be imported to the USA in 2014. The Duke 390, to be launched in Europe soon, followed by India and then the USA has been developed as a joint project between KTM and the Indian Bajaj firm. The bike was developed in Austria, while everything else, including design and final product development, was done in India.
Bajaj Auto owns 47 percent of KTM and has released two other Indian-built KTM models, the Duke 200 and Duke 125, which will not be coming to America. The Indian factory made 17,000 bikes last year. KTM is now Europe’s largest selling bike maker, with sales of 107,000 units, as against BMW’s 106,000. Pierer says that KTM hopes to increase sales to 200,000 units. “We would produce 200,000 units a year; of that, 100,000 would come from India. We expect sales of 10,000 Duke 390s in Europe and the USA. India and other regions would be additional,” Pierer adds.
BARCELONA SUPERENDURO: THE EUROPEAN VERSION OF ENDUROCROSS — YOU’LL LOVE THE LOG ROLLERS
2013 GRAND PRIX RIDER NUMBERS: AND WE THOUGHT THE AMA SYSTEM WAS STUPID
It is hard to believe that the FIM could come up with a numbering system worse than the AMA’s, but they did. On the happenstance that someone is thinking about enhancing the sport by introducing a numbering system that help the fans understand who’s who in the sport we don’t recommend the Grand Prix system—because they don’t have a system. They just ask the rider, his wife, mechanic or team owner what number they would like and then give it to him. There appears to be no thought involved, but we could be overthinking it. We thought there would be someone, in some class, with the number one plate (or the number 2 plate, or the number 3 plate, or the number 4 plate or the number 5 plate). Guess we were wrong.
2013 GP NUMBERS
7. Jonathan BARRAGAN
9. Ken DE DYCKER
11. Sebastien POURCEL
12. Maximilian NAGL
14. Max ANSTIE
15. Viacheslav GOLOVKIN
17. Jose BUTRON
19. David PHILIPPAERTS
20. James DUNN
21. Gautier PAULIN
22. Kevin STRIJBOS
23. Christophe CHARLIER
24. Shaun SIMPSON
25. Clement DESALLE
30. Gregory ARANDA
34. Joel ROELANTS
35. Sean MITCHELL
39. Davide GUARNERI
40. Tanel LEOK
44. Elliott BANKS-BROWNE
45. Jake NICHOLS
51. Jens GETTEMAN
55. Mike KRAS
59. Alexandr TONKOV
61. Herjan BRAKKE
64. Ito MASANORI
65. Kei YAMAMOTO
66. Toshiki TOMITA
71. Christopher VALENTE
73. Dmitriy PARSHIN
74. Ivo STEINBERS
76. Pascal RAUCHENECKER
80. Michael LEIB
84. Jeffrey HERLINGS
85. Jason DOUGAN
89. Jeremy VAN HOREBEEK
91. Matiss KARRO
95. Augusts JUSTS
99. Kristers TEKO
100. Tommy SEARLE
103. Kenny VAN DUEREN
111. Dean FERRIS
112. Even HEIBEYE
116. Mikolai PASHCHYNSKY
119. Mel POCOCK
121. Xavier BOOG
122. Dylan FERRANDIS
128. Ivo MONTICELLI
131. Nicolas AUBIN
136. Stefan Kjer OLSEN
141. Maxime DESPREY
151. Harri KULLAS
152. Petar PETROV
171. Damon GRAULUS
173. Valentin GUILLOD
183. Steven FROSSARDn
195. Roberts JUSTS
200. Arnaud TONUS
210. Vsevolod BRYLYAKOV
221. Priit RATSEP
222. Antonio CAIROLI
241. Andre PARK
249. Nikolaj LARSEN
256. Kim LINDSTROM
259. Glenn COLDENHOFF
262. Giacomo DEL SEGATO
300. Alessandro LUPINO
461. Romain FEBVRE
495. Mathias PLESSERS
611. Mihail COCIU
685. Steven LENOIR
711. James COTRELL
737. Valentin TEILLET
777. Evgeny BOBRYSHEV
911. Jordi TIXIER
922. Kevin FORS
999. Rui GONCALVES
USED IT, ABUSED IT, TESTED IT: SKF FORK SEALS/DUST WIPERS
With one of every 2013 motocross bike made in our test fleet, the MXA test crew gets tired of blown forks seals. Which is why we replace the stock seals with SKF seals (they come stock on KTM’s and we rarely blow a KTM fork seal). SKF seal kits consist of a new oil seal and a new dust wiper. SKF’s self-lubricating rubber compound not only enables them to keep the oil in, but to reduce static friction (stiction) by a significant amount.
VERDICT: Nothing is more frustrating than looking down at your fork leg and seeing oil oozing towards your front brake rotor. A modern upside-down fork requires complete disassembly to replace a fork seal. In MXA’s opinion, modern fork seals are lightyears better than seals from a few years ago and SKF is better than any other modern seal. It is highly likely that a 2013-era fork seal would never leak or wear out if dirt wasn’t introduced into the equation. It’s not a matter of keeping the oil in, as much as the dirt out–thus the dust wiper. $35.99 (one seal and wiper)–www.mx-tech.com or (877) 850-5114.
Yamaha Motorcycle tests