i race a j in j open but on dirt do you get more tourqe out of one size more than another. thanks mate greatly appreciated
Axles are a nightmare in karting as no one has the definitive answer and anyone who tells you otherwise is a person you should beware of. As for axles on dirt I would on first look say that soft is best but I know absolutely nothing about dirt kart racing. There are two kinds of dirt racing also just to make it a bit harder, the speedway soft stuff and the sprint hard stuff. My suggestion is seek out a fellow competitor WHO IS ABOUT THE SAME WEIGHT as you, this is very important. I am sorry I can't do anything other than make it harder for you, perhaps someone else who has done it can help more.
I don't often agree with Chris's "angle" on kart handling (though I greatly enjoy reading his thoughts), but I can make an exception in this case...
"no one has the definitive answer and anyone who tells you otherwise is a person you should beware of."
Pure gold, Mr Parks. A truer word never spoken.
For dirt speedway in nsw most seem to run 30mm axles or 40mm aluminium axles. Dont know why but it must be for a reason haha.
I race dirt karts in SA. Nearly everyone uses a 40mm aluminium axle.
Setting up a dirt kart correctly is quite difficult. The track changes so much it's more important to go for a set-up that will work OK in a wide variety of track conditions.
It would be like a bitumen guy trying to set up a kart when he knows the track is going to start off damp, then end up like the end of a dry CIK meeting all in the one heat!
The aluminium axle tends to allow the kart to slide without bouncing more than the steel one.
If you already have a chassis, run with whatever axle is in it for a start. In any case the position of your seat will be the most important thing to get right.
ugh on May 28, 2009 at 14:24
okay so by changing the seat hight what might i achive
As you raise the seat, you will get a faster turn in, and more grip through the corner..
If you go too high the kart will be unstable on turn in (it will tend to "flick back" instead of sliding evenly). You will also get bounce through the corner.
I've never raced the 'J' but looking at the well set-up karts they have the seat forward and high compared to higher powered karts.
If you need to run a lot of lead (>5kg's), try it as high as it will go on the seat to get a feel for the difference in centre of gravity.
Comments7
ugh on May 26, 2009 at 9:53
i race a j in j open but on dirt do you get more tourqe out of one size more than another. thanks mate greatly appreciated
Axles are a nightmare in karting as no one has the definitive answer and anyone who tells you otherwise is a person you should beware of. As for axles on dirt I would on first look say that soft is best but I know absolutely nothing about dirt kart racing. There are two kinds of dirt racing also just to make it a bit harder, the speedway soft stuff and the sprint hard stuff. My suggestion is seek out a fellow competitor WHO IS ABOUT THE SAME WEIGHT as you, this is very important. I am sorry I can't do anything other than make it harder for you, perhaps someone else who has done it can help more.
I don't often agree with Chris's "angle" on kart handling (though I greatly enjoy reading his thoughts), but I can make an exception in this case...
"no one has the definitive answer and anyone who tells you otherwise is a person you should beware of."
Pure gold, Mr Parks. A truer word never spoken.
For dirt speedway in nsw most seem to run 30mm axles or 40mm aluminium axles. Dont know why but it must be for a reason haha.
I race dirt karts in SA. Nearly everyone uses a 40mm aluminium axle.
Setting up a dirt kart correctly is quite difficult. The track changes so much it's more important to go for a set-up that will work OK in a wide variety of track conditions.
It would be like a bitumen guy trying to set up a kart when he knows the track is going to start off damp, then end up like the end of a dry CIK meeting all in the one heat!
The aluminium axle tends to allow the kart to slide without bouncing more than the steel one.
If you already have a chassis, run with whatever axle is in it for a start. In any case the position of your seat will be the most important thing to get right.
ugh on May 28, 2009 at 14:24
okay so by changing the seat hight what might i achive
As you raise the seat, you will get a faster turn in, and more grip through the corner..
If you go too high the kart will be unstable on turn in (it will tend to "flick back" instead of sliding evenly). You will also get bounce through the corner.
I've never raced the 'J' but looking at the well set-up karts they have the seat forward and high compared to higher powered karts.
If you need to run a lot of lead (>5kg's), try it as high as it will go on the seat to get a feel for the difference in centre of gravity.