Chassis offset beneficial?

[71racer]

Hi I’m wondering about openions on Chassis offset on a fx chassis I read a lot of stuff on haymow but can’t find any defiant answers weather it is beneficial any input would be grate thanks cheers

[thebandit21]

I think I may know why you can't find the answers.
-Track conditions, hp level, corner entry speed, weight, tires, center of gravity and many more factors determine if you need offset and how much so there is no real answer that suits everyone. 

Its surprising how little you need offset if at all. Back in the early days common practice was to just go for the maximum offset you could go and try to make your chassis work from there. That sure wasn't the way to go. If your race track is anything less than perfect, (perfect being a wet sticky smooth red clay permanent race track like you would find down South in the States) you probably don't need offset. If you run turf tires, you probably don't need offset unless its that one day out of the year when the track is wet and sticky. If you have a governed engine you probably don't need offset. Having too much offset will make your mower get pulled to the outside about mid corner because there isn't enough right side weight. You have to think backwards to a dirt car with suspension. If you are going up on two wheels in the corners you can't get any more right side weight so you could stand to use a bit of offset and I mean a max of 3/4" axle offset from center. So to answer your question in my own opinion if you were going to build an fxt or fxs with hoosier tires you would probably want to go with 3/4" offset. As a rule of thumb for almost anything else with that style of chassis (42" wide) I would start with no offset and go from there. In WOO I would say that having any offset in anything under outlaw would be a disadvantage more than an advantage using turf tires. Hope that helps you out some.

[thebandit21]

I should mention that the above advice is based of a supermod/outlaw/fxt/fxs style of chassis where you sit down into the fenders with a kart seat. If you are sitting up high you will have a lot of weight transfer to the right side and could use some offset especially if the machine is narrower than 42" like a prepared chassis in the states for example.

[71racer]

Thank you very much for the clarification I noticed there seems to be a lot built without any or verry little offset now.