USGPRU Adds 250cc Grand Prix Class

[motomadness]

USGPRU Adds 250cc Grand Prix Class

From a press release issued by USGPRU:

The USGPRU is pleased to announce that we will be running a 250GP class in 2004. The rulebook is being updated to reflect the addition of the class. The structure will be very similar to that of the 125GP class from this past year, with timed qualifying, 50km races, and a cash purse for the winners.

CCS and F-USA will host the majority of the rounds with a few special events being run with other organizations. The schedule should be finalized by mid January '04.

For additional details, visit our website at: www.USGPRU.net


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TZBoy, SuperDuck - interested?  Of course you most likely would have to be experts.

[TZDeSioux]

Very cool. I don't think you have to be an expert to run USGPRU. There's only one class but it's open to both amateurs and experts. Sean..you should keep your TZ and run some of the races with us.

[TZ_Boy]

  I wouldn't get to excited, they said there were going to run a 250 class in 2003 but it never happened.  They also tried to have a rule for unleaded fuel only but it didn't work out for the 125 class.
  I think Brian is right they let us Amatuers run. I will definetly run if they get it together.

  

[brian_gordon]

they tried it last year and it didn't work becuase of lack of participation. with no more ama, the interest level should be higher. for the average club racer, just think how nice it will be to race with only 250 two stroke bikes.

[motomadness]

Definitely would be nice to run in an all 250 class.  I have to put some numbers together to see how feasible it would be.  

It would awesome if I could run both a TZ and an R6.

[MZGirl]

I just got a TZ.  I may have to think about this one.  I'll be doing track days on it over the winter to get accustomed to it, and to set it up for me.  But I think this could be fun.

[Super Dave]

They also tried to have a rule for unleaded fuel only but it didn't work out for the 125 class.
  

MAKING everyone run unleaded is silly.  Some bikes would require potential machine work to allow them to run an unleaded, or visa versa.  Additionally, you can't garuntee that the fuels would necessarily be available at the track.

[Arnziffel]

There was alot of discussion about running unleaded, but they canned the idea.
 I ran 125s with them in their  start up year and had alot of fun doing so and would run 250 this year but can't afford to switch back to the 2 stroke .

[motomadness]

Isn't the conversion from unleaded to leaded a matter of changing the cylinder heads and jetting?  SuperDuck/TZboy?

I think I am going to try and find a way to ride both an R6 and a TZ next year.

[Super Dave]

The original intent, as it was sold to me, was in the interest of "enviornmental concern" that leaded fuels were "bad".  

Combustion of leaded and unleaded fuels is dramatically different.  Yeah, you'd have to probably change the combustion chamber shape to get performance back.  

Unleaded fuels are low in MON also, so, you'd probably have to reduce the compression to make it work without detonation.  Timing?  Probably.

Jetting, of course.  Unleaded's are really heavy and most are oxygenated.  

Interestingly, unleadeds really post a larger health threat to you than leadeds.  Too many funny chemicals in unleaded race fuels.  

[TZDeSioux]

Lets not forget that late model GP bikes come from the factory setup to run unleaded fuel. I believe 1996 was the last year for leaded bikes. My 98 which was worked over pretty good had 7.8cc leaded heads and with a 0 deckheight it ran really strong. That setup would've definately detonated way too much if I had ran unleaded fuel. Also remember that plug chops are just about useless with unleaded fuel so you'd need an oxygen sensor of some sort or a detonation counter to jet your bike properly. Besides, leaded fuel lubricates everything nicely. I think USGPRU wanted to go unleaded because they wanted to following what the FIM was doing.

[TZ_Boy]

   Yes the USGPRU think's they are the springboard for World Gp racing so they wanted to follow there lead of running unleaded.  They said they didn't have the money to buy the fuel testing equipment so they canned the idea.

  I would enjoy racing with only 250's as well as qualifying for grid posistion's.  Forcing people to run unleaded would only reduce entry's.