I have a question for everybody.

Right now i am running a stock 27turn putnam or sometimes CO27 i am trying to find out if i should run my gear ratio at 1.8 or 1.9 some people have told me to run at 1.75-1.8 but others told me to run at 1.9-2.0 i am racing at a small track where i need a lot of speed in the turns i was running a 1.99 last week and i lost a lot of speed in the turn but i was a rocket down the front strech and down the back streach. What gear ratio should i run.

Taylor

Run whatever roll out is fastest for you, for a full run. Your roll might vary from what others are running due to slight difference in motors, chassis setup and driving style.

If you know the runline of the track we can give you a starting point.
Setup is still alot more important than hitting the perfect rollout.

Where are you running, or do you know about what the run line is? and when you say a 27 turn Putnam what is the motor brand? still a CO27? because with a X-stock (black can) or Monster (greenish can) you will be around .10 lower rollout. Then with a CO27

its a black can putnam and a trinity blue can co27

You make a couple of references to gear ratios....
Do you know what roll out is?
Just asking... because there is a difference between gear ratio
and roll out...

How many laps are you guys running in stock, in a 4 minute race?

Without knowing the runline/ size of track, A good rule of thumb thats works for me on every track i run, is gear the Black can 1-2 tooth lower then the CO27

Run whatever roll out is fastest for you, for a full run. Your roll might vary from what others are running due to slight difference in motors, chassis setup and driving style.

If you know the runline of the track we can give you a starting point.
Setup is still alot more important than hitting the perfect rollout.

Very good advice! Only thing I,ll add is that usually its better to slightly under gear on very small tracks. It will allow you to get thru and out of the corners quicker making it easier to pass other cars.

its about a 120foot overall track i like to run a high line in the strights and a low line in the turns. I got the ratio by tire size x Pie x Pinion divided by spur not shure what all the other stuff is.

Taylor

running about 54-64 laps

:confused: what motor is better the CO27 or the putnam

For tight tracks The Co27 is a good motor its a torque based motor and is more forgiving on your gearing.
Although if you can get a good Monster they are tough to beat when geared right.
When you say Putnam, that does not tell us which motor it is. Take a pic of the can and post it and we can tell which Putnam tuned motor it is.

Light Green/Sage color is a Monster
Black color can - X Stock
Light Gold color can - Roar Stock
Cobalt Blue color can - CO27

120' - I say start around a 1.70-1.75 with a Monster and maybe a 1.85 with a Co27

That will get you close

its a black caned putnam

thats what i am running this week end if it will make that much diffrance i can switch them right now i am running a size 2.0 tire and a 33 pinion and a 116 spur 64 pitch.

taylor

i also have a light green putnam monster.

Would the monster be better over all of them.
taylor

i tryed gearing the CO27 at 1.99 last weekend was a rocket but got beat in the turns like nothing.

Need a ratio that would be great in the turns and out of them

2.00-2.10 on a 120ft. track, with the co27. Work on the car so it can handle the gear.

Actually the Black can motor and the Monster should be geared about the same. The Co27 is the only one that needs a taller gear.

I ran stock for about 6 years. Worked my way up and got up to speed.
So please take my advice when I say this:
STOCK class speed is all about Chassis setup, and getting laps, laps and more laps under your belt to hone your driving skills. One bobble down the straights, or not setting the car up for the turn correctly will kill your momentum in stock racing.

If you are getting killed in the turns work on the car, not the motor.

Honestly motor probably only matters when you are talking the best of the best like a Snowbirds sized race. And even then the best chassis is gonna win.
That is why guys like Eric and Steve Salvas, Jody Miller, Dusty Dean, etc are always up front in Stock at big events.
They know their chassis and probably record more laps per year than just about anybody in the country and it shows.

Some food for thought:
I have never seen a guy strap in a different stock motor and gain 2 laps.
I have seen a pro take somebody's chassis, rebuild the front end for them and pick up 2 laps.