motive
Active Member
Hey Reid, Motive = Zane. geez man, can't even keep your friends straight? haha Ryan owns and drives the car. I'm just one of the CAD junkies/suspension geeks on it.
He can call me a member of the peanut gallery all he wants but if he is trying to show something important with that level then he needs to explain some details. Is the upper a arm axis (bulkhead?) parallel to the ground? Is the face of the steering arm perpendicular to the ball joint axis or something? I could bend that steering arm up/down, in and out all day (a somewhat common practice with forged spindles in the road racing world) without changing the castor or whatever he is trying to show. I was not intending to criticize by any means. Just pointing out that the info the level is displaying is useless without some explanation. If the "bulkhead" is designed at the same angle as the target castor AND the face of the steering arm is perpendicular to the steering axis then yes, it is "spot on."
In a traditional matter I would also define a bulkhead similar to how Reid does however it does not have to be a firewall per say. But a load carrying structure that is designed to take loads that are not along the axis of the main tubes (bending loads). Typically connected to other bulkheads via tubes. While a bulkhead could be laid down horizontal a typical race car chassis is build with the main tubes running front to back. If you have ever spent much time in a WWII era plane you will get a good idea of a bulkhead. Most TTs as well as the Redlands car have a very defined bulkhead that carries suspension pic up loads as well as carries the steering rack and its corresponding loads. All that being said only for the sake a sharing, I might call an apple a potato and you might call it pumking...I still got where you were going.
Telling how much anti dive a RZR has isn't a simple answer. It depends on the (sprung) center of gravity height that is going to vary from different ride heights, probably 2 or 4 seat, 1000 or turbo. I have no idea the range a stock vehicle would have. But to the best I was able to measure the chassis it is about 4.7 degrees between the upper and lower a arm axis. The whole thing is also canted up 4.something degrees.
He can call me a member of the peanut gallery all he wants but if he is trying to show something important with that level then he needs to explain some details. Is the upper a arm axis (bulkhead?) parallel to the ground? Is the face of the steering arm perpendicular to the ball joint axis or something? I could bend that steering arm up/down, in and out all day (a somewhat common practice with forged spindles in the road racing world) without changing the castor or whatever he is trying to show. I was not intending to criticize by any means. Just pointing out that the info the level is displaying is useless without some explanation. If the "bulkhead" is designed at the same angle as the target castor AND the face of the steering arm is perpendicular to the steering axis then yes, it is "spot on."
In a traditional matter I would also define a bulkhead similar to how Reid does however it does not have to be a firewall per say. But a load carrying structure that is designed to take loads that are not along the axis of the main tubes (bending loads). Typically connected to other bulkheads via tubes. While a bulkhead could be laid down horizontal a typical race car chassis is build with the main tubes running front to back. If you have ever spent much time in a WWII era plane you will get a good idea of a bulkhead. Most TTs as well as the Redlands car have a very defined bulkhead that carries suspension pic up loads as well as carries the steering rack and its corresponding loads. All that being said only for the sake a sharing, I might call an apple a potato and you might call it pumking...I still got where you were going.
Telling how much anti dive a RZR has isn't a simple answer. It depends on the (sprung) center of gravity height that is going to vary from different ride heights, probably 2 or 4 seat, 1000 or turbo. I have no idea the range a stock vehicle would have. But to the best I was able to measure the chassis it is about 4.7 degrees between the upper and lower a arm axis. The whole thing is also canted up 4.something degrees.
