race3737 said:
If you know that a certain rollout works for a track with a certain run line length, is the rollout directly proportional to the runline? (Flat track)
For instance, if you know that a rollout of 2.28 is good for a 208 ft run line, would a rollout of 1.53 be good for a 140 ft run line?
208 / 2.28 = 140 / X
Where X = 1.53
If this is true, does it apply to Stock, 19t and/or mod?
Thanks
As the other reply suggests, you can run the same roll,
on tracks that are 30-40 feet different.
If your example is from experience, and you do indeed run that 2.28,
on the big track, then the formula most likely will not work,
as a 1.53 seems to be quite low, for a 140 footer....
depending on a lot of variables, of course, we run around 1.90 on
a track about that size. (carpet)
I think mathematically, the flaw comes from using a direct proportion.
using your formula, if you raced on a track of 100 feet,
you'd need about a 1.1 roll.... that just isn't likely.
The easiest "formula", is asking a guy that seems to get around well,
what range roll does he run! If he's really good, and says 2.02,
you should try something about 2 teeth smaller, as generally he
is really dialed in, and you won't be right off.
He'll be on the throttle a lot more than you, and can utilize the
higher roll. just my opinion of course... good luck.