You usually only need 4 cars to make a class.
Talk to your buddies that have em, pick a day that works and show up to race.
That's how UF1 started, Lightfoot talked to a few F1 racers and picked a day to run em. Then it snowballed from there by keeping in contact by emails, rctech etc.
The guys that showed up were a mixed bunch of F1s, Tamiya, HPI, 3 Racing...
After we started racing a few times, Mr. Lightfoot got together with The Powers That Be at Tamiya Aliso in So Cal and he put on the first UF1 race that was for separate rubber and foam classes.
Each class allowed 200mm and 180mm cars so there were assorted cars, driver skills and wheelbases in each.
It sorted itself out fine and with each following outing the rules became more clear cut and easy for everyone to follow and participate in.
Silvercans or 21.5s and trust me, there were some stupid fast silvercans that gave the 21.5 all they could handle. Eventually the 21.5 took over due to the no maint. factor.
Rubber and foam also ran together sometimes and were scored separately since there were only one or two heats in the early stages.
We got hooked and Charles Lightfoot and Tim Ruwe planned out and pursued the first UF1 Championship series that visited several tracks and crowned the first champ for 2010. (blows his own horn, thank you)
Then came the Winter UF1 Series, bi weekly, 8 race dates that were all at one track, TQ Raceway in Corona CA., it was on carpet and ran on rubber only and still allowed both 200mm and 180mm to run together. A winter champ was crowned. The battle for 1st came down to the last laps of the 3rd A main and was between a 200mm and a 180mm car.
Today/ok yesterday we just finished up our 2nd Annual UF1 Series and crowned a new UF1 Champ. Again 8 races all at different tracks, 2 different classes, Open class with no limits at all and Realistic (current) which was for 180mm and rubber tires only.
You were allowed to choose which class to score points in each day as many chose to run both classes but by mid season the Open class had lost it's appeal to many and the Realistic class was the most popular.
At the end of the series only 1 champion was crowned so some strategy was involved in choosing where your points came from.
Some chose the Realistic for points as they were running very well there and some chose Open due to the fact that there were less entries and more points were easier to gain here.
Others like myself chose to take points in the Open class cuz we love the 200mm on foam and found our cars solid and often at the front of the pack.
As it turned out, our most consistent racer ran in the Realistic class and swept the event several times for maximum points and took the 2011 title.
It was a close battle for second place between 2 of us in the Open class and another Realistic class driver.
I was fortunate enough to have had some really good Open class events scoring max. points at a couple of em and held on today to take the second spot.
UF1 2011 Winter Series starts up in a couple weeks and will again be at TQ Raceway but will only be crowning a champion in the Realistic Class.
The "Support" class will still be Open motored F103s but in LeMans format on rubber tires and must run lights, a true exhibition class which seems to have more interested in it than the Open F103 F1 cars.
Just race em.