Copyright 2004, Roadracing World Publishing, Inc.

Dyno trouble: Formula USA’s deal with Dynojet to provide the official dyno for dyno-controlled classes fell apart immediately before Daytona, according to Kenny Abbott of Clear Channel Entertainment-Motor Sports. Officials have now done a deal with Factory Pro Tuning to provide the official dyno and dyno support services for the F-USA Series, starting this weekend. F-USA officials picked up a Factory Pro Tuning dyno last night and positioned it at the Speedway, which meant that no dyno was available to competitors for tuning purposes yesterday when official practice started.

Factory Pro Tuning dynos have historically read differently than Dynojet dynos, and it’s unknown at post time if or how officials will adjust official horsepower limits to suit the new dyno.

Factory Pro Tuning owner Marc Salvisberg has long criticized Dynojet dynos as being innaccurate and producing numbers that are not to actual bhp spec. Despite his assertions, Salvisberg has made little progress in his campaign to unseat Dynojet as the standard dyno in the motorcycle industry and aftermarket.

A Dynojet spokesman was not in at Dynojet headquarters in Las Vegas and could not be reached for comment at post time. Marc Salvisberg was not in at his office in San Rafael, California and could not be reached for comment at post time.



Wet and cold weather has been a concern at Daytona International Speedway this week.

Heavy rain fell in the general area during the day Wednesday but not on the Speedway itself. Team Hammer Track Day participants–divided into separate groups for School, Track Ride and Practice for licensed racers–enjoyed a dry track, with five sessions for each group, including two 40-minute practice sessions in the afternoon. A total of 53 licensed racers participated in the practice sessions on the 3.56-mile track, with 37 riders in track ride sessions and 32 in school sessions.

Thursday was overcast, cold and at times misty, with ambient temperatures only reaching the 50s.

Several riders used Thursday’s Team Challenge race to do endurance runs on tires. Valvoline EMGO Suzuki’s Vincent Haskovec and Steve Rapp both completed 16-lap endurance runs aboard their GSX-R1000 Superstock bikes, on Michelin tires.

Arclight Suzuki’s Scott Harwell and Chris Ulrich used the Team Challenge to work on bike set-up. The team faced the extra factor of having changed from Pirelli to Dunlop tires for the 2004 F-USA season. Late in the race, Ulrich left pit lane after a stop for adjustments and then lost the front and crashed his GSX-R600 in the chicane, breaking his right collarbone. Ulrich flew back to California this morning to see orthopedic surgeon Art Ting.

Friday morning, Daytona was cold and overcast with a light mist falling. The mist abated but it remained cold, in the 40s, with a light wind.