Track Width

[Mean 69]

AWD? Cool! That sounds fun if done well.



I wouldn't sweat the front/rear track issue, as long as the overall geometry suits your needs. The back of a stick axle car, or even IRS, is a lot less sensitive to funky wheel offsets, because the rear wheels don't have to turn. The main issue on the fronts is the result of less than desireable scrub radius, wheel hitting frame, stuff like that. Not nearly as important on the rear, as long as it doesn't get "too" crazy to have a negative impact on wheel bearing due to cantilever (which yours won't as described).

Fun project!
M

[4OfaKind]

I wouldn't sweat the front/rear track issue, as long as the overall geometry suits your needs.

Thanks Mean,

I thought about cantilevers in the front but decided against it. AWD is trick enough.
Question: Didn't the older Porsches have a narrower track up front?

[wally8]

Hey everyone. I haven't posted anything on here in quite awhile. It's been a busy summer.

40,

Although I'm sure you can make it work as is, most race cars favor a narrower track at the rear than the front.

In generic terms, this helps with turn in and with how the car gets off the corner. You can tighten (narrower) or loosen (wider) a car by changing track width with different wheel offsets. In my experience the loosening only applies to going even up with the front. I'm not really sure if it would continue to be the case once you've gone beyond the front track width.

Later....

Wally

[4OfaKind]

Although I'm sure you can make it work as is, most race cars favor a narrower track at the rear than the front.

In generic terms, this helps with turn in and with how the car gets off the corner. You can tighten (narrower) or loosen (wider) a car by changing track width with different wheel offsets. In my experience the loosening only applies to going even up with the front. I'm not really sure if it would continue to be the case once you've gone beyond the front track width.

So the general consensus is that I can get away w/ a 2" narrower front track as long as the geometry is set up properly. However, the optimum setup is an equal track width f/r even though I am building a car for very part time race use.

I will widen the front track to match the rear at 62".

[Beige]

Thanks Mean,
Question: Didn't the older Porsches have a narrower track up front?

Older porsches also have 2/3 of the weight over the back end. So a wider track helps keep that extra rear weight in check.

[graycamaro]

maesuring brake face to brake face is not accurate to measure track width you should measure form the face of the hub where the wheel mounts and the depending on what those numbers are decide on wheel offset or spacers to get the track right.


Generally wider in the back will make the car want to oversteer but may not be a problem with an awd car.