KR floorpan aero

Well, karting has turned into an aero war.

KR has released their aero floorpan, nice that they are experimenting with different stuff.

But in my opinion this is just a gimmick that is going to cost :money_with_wings::money_with_wings:

But this is most likely only ran on KZ karts and not KZ2




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Pretty cool but full pans are not allowed normally correct? Only for KZ I assume?

Only for KZšŸ˜„

But it could probably make its way through, but with a different design

I guess at higher speeds you could get a little negative pressure on the front end with a working floor…


If it’s for KZ I don’t mind it, cool to see different things at the ultimate frontier of karting.
My father was right saying KR has their own Adrian Newey

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With the damage I see on the underside of karts from kerbs…looks like much ado about nothing. Those skirts will never live at many tracks. Something for the premier category to play with…not us.

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CIK level tracks are generally a bit smoother and less abusive, otherwise yeah that would get shattered in about 2 laps at most of our tracks here.

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Don’t think it goes beyond the cross rail in front of the seat, which meets the regulation.

Having said that, there’s nothing stopping a seat shaped to take the flow from the pan and do something with it.

From an aero perspective, I can’t see how this works. Its got a the leading edge, it looks like they are trying a diffuser throat using the frame rail, then it just ends. There’s no trailing edge air expansion space. It just ends with the frame rail. So I’d think it’d create a high pressure region under the kart.

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I’ve looked at developing a seat that is a diffuser as well. That is within the regulations. Zip tried a full floor and difuser in 1979 but withdrew because it was a bit on edge regulatory wise.

The FIA regs state

"4.6 Floor tray It is mandatory to have a floor tray made of rigid material stretching from the central strut to the front of the chassis frame. It must be laterally edged by a tube or a rim preventing the driver’s feet from sliding off the floor tray. The floor tray may be perforated, but the holes must not have a diameter of more than 10 mm and they must be separated by four times their diameter as a minimum. In addition, two holes with a maximum diameter of 35 mm are allowed for steering column and/or gear shift lever access. The floor tray may be made of composite material. "

Interestingly Motorsport UK regulations would outlaw this pretty much.

"16.6.1. The floor tray must be flat, with any deviation allowed upwards, and not downward.

I had a design for this. You could extend it into a diffuser.

It looks like they’ve tried to extend it behind the central strut. I’d assume it then becomes ā€˜bodywork’ and can’t be used as it isn’t homologated. When I was designing my seat idea it was under the assumption any full length tray would be deemed ā€˜bodywork’ and thus need to be homologated. If it’s stuck tot he sat and not attached to the chassis, that’s a workaround.

workaround confirmed. This is annoying as I had this idea earlier this year ha

Did spot the extended piece under the seat.

I’m catching that the FIA rules have been changing a lot since I cared more lol. It definitely used to say it couldn’t go beyond the cross rail in front of the seat, except superkarts, which can have a full length floor. Now the wording change has allowed a full floor (in my opinion) as long as it stretches from the central strut to the front of the chassis frame.

Ross Brawn would say it depends on you definition of up and down.

Just in case you thought it was a first. '79 Worlds :slight_smile:

image

(KR have used the workaround whereas I assume Zip didn’t)

Personally not a fan of this. I feel like in general karts need to get less complicated, as silly as that may sound.

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Looks pretty cool, but it looks like a lift generator. Seems like it would need to go under the seat and have a diffuser to make downforce? I am not an ā€œaero guyā€ though.

Is that Grand Junction?

Lonato, La Conca and others… there are big jumps in EU as well…

The same rules apply regarding the central strut. This is a workaround. You turn the seat into an extension of the floor. I designed the seat to have a diffuser as well. I felt like just bracketing a floor on wouldn’t look too good from a snooping regulatory eye. it’ll be good to see the idea tested though.

I had thought about what actually constitutes a ā€˜central strut’ as it’s not defined and it can affect how you approach SuperKart aero too (there’s a workaround to have the diffuser start earlier). There’s nothing about where it needs to be from what I could see. So you could in theory design a chassis with this in mind and come up with a whole load of solutions.