How much is too much Cross?

[1fasttiller]

Hi gents, my son has been on a Slack Pursuit now for a little over a year, we had a '21 and now on a '22 and even though they are supposed to be the same kart, this one just seems to love cross, he weighs 320lbs with kart and runs Jr3. we find that every time we add cross he seems to get faster. I'm just curious to know how much is too much? We're already well above the PMI suggested setting for a Jr (or even adult for that matter). We do run on pretty hard, fast tracks all over the SE here in FL and GA. I guess it will drastically slow down when we reach the breaking point? What other sign(s) should I look for to show too much cross?

 

[flattop1]

I was always told add cross till you get a 4 wheel drift .
Then back of 2% .

 

[Ted Hamilton]

If you keep getting faster, add until you slow down, then go back one. Baselines are just a starting point. All drivers, all driving styles are not the same, so all setups may not match.

 

[racing promotor]

When you get to much you'll see it, and if ya don't the driver will tell you.

 

[1fasttiller]

When you get to much you'll see it, and if ya don't the driver will tell you.

I'm hoping so! lol this kid just keeps getting faster and this pursuit keeps on taking it! We'll see this weekend at the World 100 how much she can take!

 

[racing promotor]

Don't panic and pull it to early in practice unless you're on the right tire just for hot laps, but if you go past what it takes you'll loose the RF

 

[1fasttiller]

Don't panic and pull it to early in practice unless you're on the right tire just for hot laps, but if you go past what it takes you'll loose the RF

Good point, I'm known to panic in practice like a dummy... is Jasper known to get very bit up and hard? we've only been there like twice for sat night races

 

[racing promotor]

Earl from So Co can tell you everything you need to know
Good luck

 

[rabiddog]

Given enough karts, Jasper can get very hard and very fast in the blink of the eye, don't let the practice sessions fool you

 

[hotelcalifornia]

How much cross you got it on? I was on a buddy's impulse after he first bought it, had 48.5 nose and 69 cross, it was snappy af and super fast

 

[1fasttiller]

How much cross you got it on? I was on a buddy's impulse after he first bought it, had 48.5 nose and 69 cross, it was snappy af and super fast

Lets just say well north of 72% and Slack recommends max of 68%

 

[hotelcalifornia]

...

 

[hotelcalifornia]

Lawd..well your spindles must be close to being maxed out..only other way I could see you getting more is by moving the left rear down

 

[1fasttiller]

Actually still have washers left on both spindles and the pill in the LR is not maxxed either..

 

[Kj26]

When the left front doesn’t touch the scale pad, it’s to much

 

[SchieberRacing6]

When the left front doesn’t touch the scale pad, it’s to much

When the right rear doesnt touch AND left front is light your at 90%...

 

[TGRRacing32]

I’ve been as much as %73. Go up until it pushes.

 

[XXX#40]

When the left front doesn’t touch the scale pad, it’s to much

The R1 and Nemesis loved that

 

[1fasttiller]

Well we found it! Kart performed well in Jr2 Friday night at the W100 and came from 13th to 4th, he was turning faster laps than the leaders but ran out of laps. Saturday was a different story in Pro Jr stock with no plate! kart was twitchy, hard to drive and pushed on exit all day. I believe we found the limits of a Pursuit!

 

[MO Predator Racer]

Well we found it! Kart performed well in Jr2 Friday night at the W100 and came from 13th to 4th, he was turning faster laps than the leaders but ran out of laps. Saturday was a different story in Pro Jr stock with no plate! kart was twitchy, hard to drive and pushed on exit all day. I believe we found the limits of a Pursuit!

What was the track like in Pro Jr? Or were the tires not right?