1979 Yamaha OW40    Bob Hannah 1979 AMA 250 National & Supercross Champion

In 1978 Bob Hannah had enjoyed an incredible year winning both the 250 outdoor Nationals and the Supercross title. Bob set an AMA record winning 22 motos in a row. In 1979, the OW40 was not ready until the third round of the SX series. Bob and his mechanic Keith McCarty again dominated the 250 Nationals and the Supercross series. There were some very unique setups that McCarty and Hannah came up with.


Keith McCarty’s Comments: During this time suspension travel was reaching 12 inches plus and everyone was going in that direction. The problem was, in making real tall bikes, they wouldn’t go through the corners well.  We went in the other direction.  We wanted to make our bike real low and also have lots of travel.

 I had a lot weird requests because I wanted the bike real low.  The forks were very special inside.  The tall fork caps were to increase the air capacity of the fork, to change the spring curve.  I think that is one of the big things that helped us win.  Bob had as much travel as they did but his bike was an inch and a half lower.

 Bob Hannah’s Comments:  We really worked hard to make the bike low and maintain the suspension travel.  Keith and I did a lot of testing in the Tehachapi hills.  We always went there to test.   We lowered the bike and my cornering speeds were up as a result.  The taller bikes just did not turn.  For sure, we were the only ones to do this.  We were also content with a bike that made good mid-range power (for a better drive out of the corners) versus top end.  I was content with the small rear hub because I didn’t use much rear brake and the smaller one was lighter anyway.  Our bike was also very light (around 200 lbs).  Without a doubt the biggest improvement we made, was to make it lower.  It gave us a huge advantage over the competition.  Once we got where we wanted it, all I did was worry about winning races.





Less than two months since Bolt secured the SuperEnduro title in dominant fashion, the British rider is now set to take on round one of this year’s HEWC – the Xross Hard Enduro Rally in Serbia. The Press Release from Husqvarna was devoid of actual facts about the new machine. The inside talk is that Billy will be racing a 2024 TE 300 TBI machine, as opposed to the TPI version that was available in 2023. It’s been pointed out that the machine (in the photo) is lacking oil injection, the frame is new and while the throttle body is covered by a carbon fiber guard, it lacks the Transfer Port Injectors of the TPI machine. We hear the production bikes will be oil injected, have Throttle Body Injection and the new electric power valve!


Questions: Is that a new engine? Updated chassis? A flatter saddle and new plastics?

TBI or TPI? The word we hear is definitely Throttle Body Injected!







Letti on his 2024 KTM 300…new frame, new engine, TBI Injected, Electronic power valve 


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Sweden, ISDE, 1990. Day five, the final grass track special test of the day and my DR350 is dead… oh so close to the Parc Ferme. I kissed a rock in the special, bent the rear sprocket and derailed the chain. I used every minute prior to houring out to fix it but the chain was mangled, and when mated to the bent sprocket it would spit off immediately. Working on this in supreme slop and so close to finishing my first ISDE was deflating.

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