Just thought I'd share this with you guys:

http://vids.myspace.com/index....95476

 

that's how it's done, no baby tracks

 

Dude that was one of the greatest kart vids I have seen so nice to see that on a big track, especially seeing how close you got up to the kart in front.....sweet!

Do you have to change your gears to run such a long straight? Is that difficult?

 

is it difficult to go straight?

 

Sucks about your motor. Nice vid though.

 

Cool vid! I love the bump drafting on the straights. That, and I wish I could go that fast through Oak Tree in my car!

Although that sucked about the motor, at least it happened to turn the car where you had plenty of runoff (South Bend).

Thanks for posting!

 

Cool vid! hadn't seen a kart on a real course before

 

That was pretty awesome. No other way to put it. Do I dare ask for speed estimates on backstraight, south bend and hogpen? I'm guessing the backstraight won't horrify me as much as any corner speeds, lol. What kind of laptimes can you run with clear track?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. Nishant &raquo;</TD></TR><TR><TD CLASS="quote">Cool vid! hadn't seen a kart on a real course before </TD></TR></TABLE>

this is so funny... not on you Mr nichant, but because most of you have no idea what carting was like back in the day when shifters made there first appearance in the US. full tracks is all we had, and supercart was king. one two five and 250 GP motors only... TZ and RS/NS

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MSchu &raquo;</TD></TR><TR><TD CLASS="quote">this is so funny... not on you Mr nichant, but because most of you have no idea what carting was like back in the day when shifters made there first appearance in the US. full tracks is all we had, and supercart was king. one two five and 250 GP motors only... TZ and RS/NS</TD></TR></TABLE>

That I don't, I'd love to drive a cart. I'm sure I will at some point. I've only gotten into this whole HPDE/tracking thing for about 2yrs now. I wind up learning something new just about everyday.

Back in day? How far we talking?

 

like 1980-83ish

 

cool video, did u get any rocks on the lens?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by essex &raquo;</TD></TR><TR><TD CLASS="quote">Dude that was one of the greatest kart vids I have seen so nice to see that on a big track, especially seeing how close you got up to the kart in front.....sweet!

Do you have to change your gears to run such a long straight? Is that difficult?</TD></TR></TABLE>

The gears are substantially different than what you would run on a sprint track. We're very close to running a 1:1 ratio from front to rear sprockets. To run WOT for such a long period of time, the motor building is more on the reliability side (ideally). Larger piston to cylinder wall tolerances and more CC's and squish in the combustion chamber.

The reason my motor stuck was because I was a tad too low on the squish. It turned the spark plug into a glow plug because the combustion chamber was so small. That's why it didn't raise it's ugly head until after a few laps.

Once the spark plug melted, it put a hole in the top of the piston and then the piston stuck to the cylinder wall causing it to lock up the rear axle.

The end result was that the debris from the melting of the plug caused the main crank bearings to seize as well.

I ended up having to split the casehalves at the track. I salvaged the connecting rod bearing and replaced the main bearings. Got everything back together at 1am on Sunday. The only thing we changed was the squish by adding an extra .005" basegasket.

Ran the race on Sunday from the back and finished third. Worked hard for that result.

Overall...it was a lot of work but definitely learned something new.

Glad you guys liked the video.

I believe we are hitting 115-118mph on the back straight when we are bump drafting. I need to look at my MyChron to see what kind of speeds we are turning in other parts of the track.

Laptimes for me, by myself, was around 2:12's in Sundays race. The factory fruntrunners were running 2:09's working together. It really is motor dependant. The start of the race was promising because I was working together (bump drafting) with another friend of mine at the start of the race. We were making ground on the factory fruntrunners mainly becuase I was bump drafting in places where they weren't. Mainly in the uphill esses. We were just about in there draft after about 3 laps until my friends motor let go in front of me coming out of Oak Tree which caused me to let off and lose the lead draft. I ended up running by myself the rest of the race.

Overall, great weekend. If you guys have anymore questions, feel free to ask away.

AJ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MSchu &raquo;</TD></TR><TR><TD CLASS="quote">like 1980-83ish</TD></TR></TABLE>

83...i was only a month old, haha

 

That was too cool. I don't know if I'd have the guts to do that.

 

The one time I got to drive a 125cc shifter kart, I had blurred vision because of the vibration and bumps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kb58 &raquo;</TD></TR><TR><TD CLASS="quote">The one time I got to drive a 125cc shifter kart, I had blurred vision because of the vibration and bumps. </TD></TR></TABLE>

now try that in a two fiddy laydown chassis

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MSchu &raquo;</TD></TR><TR><TD CLASS="quote">like 1980-83ish</TD></TR></TABLE>

How old are you again?

Pretty cool video.

 

Good to see more fellow karters in here.

M-

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITRbroham &raquo;</TD></TR><TR><TD CLASS="quote">

How old are you again?

Pretty cool video. </TD></TR></TABLE>

44

 

AJ, your lines are pretty interesting. I know there are differences not only in camera angle (I'm guessing this is something like a chasecam mounted on the front of the kart), but also just in the lines one would take in the kart. Is it not necessary to go as wide as we suspensioned ones do to make an apex? I noticed it especially through the T3-T6 complex. Other than that, the engine kaboom was downright entertaining! VRRRRRR *click* skrrt! and it's over.

&lt;--- Still has a lot to learn about karting

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aahj &raquo;</TD></TR><TR><TD CLASS="quote">
We were making ground on the factory fruntrunners mainly becuase I was bump drafting in places where they weren't. Mainly in the uphill esses. </TD></TR></TABLE>
OMG....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stinkycheezmonky &raquo;</TD></TR><TR><TD CLASS="quote">AJ, your lines are pretty interesting. I know there are differences not only in camera angle (I'm guessing this is something like a chasecam mounted on the front of the kart), but also just in the lines one would take in the kart. Is it not necessary to go as wide as we suspensioned ones do to make an apex? I noticed it especially through the T3-T6 complex. Other than that, the engine kaboom was downright entertaining! VRRRRRR *click* skrrt! and it's over.

&lt;--- Still has a lot to learn about karting </TD></TR></TABLE>

Yea...T3 was my weakest turn. I lost more time in that turn than any other turn. I always entered it too slow. But as far as some other turns that are flat out, going all the way to the outside to hit the apex sometimes isn't necessary. It's just a waste of road. But the camera is also deceiving with the wide angle lens. I'm actually a lot closer to the apex than what it seems. All in all, you need to try it at least once in your life.

AJ

 

Oh yeah, that was AWESOME!! Can't wait for Comp School at VIR in February.

 

Thanks for posting the video. Glad to see you're still racing.