For race events, what are usually the things that you guys change in order to improve kart setup? Which ones have the most impact and when do you know to make those changes?
That’s a very big and broad question that doesn’t have an easy answer. There are countless things that you can adjust on a chassis, and it all depends on how the kart is handling and even then some manufacturers have varying recommendations for things to try for different situations. I believe you’ve said before that you’re newer and don’t have much seat time yet, correct? If that assumption is wrong, it might be easier to share what chassis you’re running and to also describe what handling sensations you’re feeling. I’m sure some people here would have some suggestions for specific things you can try changing. However if that assumption is correct, my recommendation would be to not get bogged down in all of the setup options available to you quite yet. You’ll find much more value in sticking to a baseline setup and just focusing on driving for now. When starting out there will be a ton of time to find without touching a single thing on the kart. As you get more consistent you’ll start to better understand the feeling of the various handling sensations, and from there you can start looking into the different things you can try adjusting to address those handling sensations. But this will take some time. Trying to take it all in at once will likely be a bit overwhelming and could potentially do more harm than good.
All that said, there is going to be some value in reading up on the basics of how a kart chassis generally works - a combination of steering geometry and chassis flex lifts the inside rear tire to account for the rear wheels being on a fixed axle, where those wheels have different distances to cover throughout a corner. A lot of this has been discussed pretty extensively on this site, and it informs a lot of what you will eventually do to adjust the handling. It would also probably be worthwhile to seek some help in ensuring that you do have something resembling a baseline setup for your chassis, and that you also have gearing that is close for the track and that you are running tire pressures in an appropriate range. But beyond that, it’s probably best to focus on driving until you have a little more seat time under your belt.
Whew, that was a lot of words - but hopefully it helps. And apologies in advance if my original assumption was incorrect and you do have some specific questions about a handling issue you are currently experiencing.
This topic might help too:
An example that would be addressed via tuning as opposed to driving would be a euro-style level of rubber build up you would find sometimes at big events. The rubber on track is so thick that the kart has to be adjusted to handle correctly.
Rain: for wet conditions, people make setup changes to modify jacking and grip.
In sure there are other scenarios that require setup changes to be effective. I think some people really like to tune and find that it’s part of their practice. Maybe they feel that conditions ona certain day are affecting a specific phase of the turn and try to normalize that behavior back to what feels right. Others, like me, would rather not deal and try to address via driving changes. That approach is clearly limited in its effectiveness but manageable at club level.
Agree with Jake’s points. This question is so opened ended there’s no way to answer it. Every track, every kart, every tire, every day is going to require a little something different in terms of setup.
James posted a good thread to read.
The best you can do is first focus on driving. Then learn what each adjustment does and then you can learn how big or small of a tweak you need for a given condition.
You can’t tune your kart at home. You need a handling condition to fix first before you can make an adjustment.
Yes your assumption is correct I do not have experience in karting besides rentals, still trying to sort everything out, I was asking more from a curiosity standpoint, I know that I need to focus on my driving first because setup won’t really help my performance until I’m consistent in the kart.
I’ll give that thread that James posted a read. Do you guys make most of your adjustments during the race day or testing before the race?
The track is changing literally every session so you need to be constantly tweaking. Most karts have a fairly standard baseline/neutral setup you start with, and you work from there.
On race day I am usually changing front track, air pressure, and sprocket. That is just because it is easy and quick. Week to week I change other things. For example this weekend I am moving some weight forward to see if I get some better turn in. Also I am bringing two different clutches, setup two different ways and will swap between sessions to see which one I like better. It is quicker than swapping springs and such