Recent content by UFO

RM said Big Bar and Soft Spring setups - This setup limits body roll in an attempt to place more load on the left-side tires, leading to more equally loaded sets of tires to produce more traction. One major factor is to limit the air under the car and kill off lift. Initially when this set up...

Hi RM I like this site there is a lot of things you bring to light and explain in a way to make it easy to under stand. There is a couple of things in this post don't sound right to me. One is that the BBSS car has more inside load and the only things that can can change load transfer with a...

V-13 sorry I thought you had a panhard bar. what is the octagon bar on the right side in your pic . With a closer look I see it is not connected to the frame. Your bottom rods mounted so close at the bottom of the rear is almost triangulated. That would give you a very low roll center, for the...

Hi Vintage 13! How can you have two points of lateral control, on the center of the rear, one on a arc and one in a straighjt line perpendicular to the bottom of the frame, and not have a bind when it goes into roll, or straight up and down movment?

Hi RM I like your analogy with the box. Wouldn't that be similar to the rear pusing that box. If the right rear tire was loaded heavy and have more traction. Wouldn't it turn the box to the left and vice versa for the left tire?

Could anyone help me with some info on compression helical springs. First I would like to know if this type of spring would even have any appreciable histeresis when new, and if so does it does it grow with repeted use and age. I would also like to know if there is any relationship beteen the...

cearnold23, On a true watts link, with equal length rods, there is no IC because the center pivot is a straight line motion that is perpendicular to the rods when they are positioned parallel to each other.

Sorry, there is a mistake in the previous post. The transverse or lateral distance should be the distance from the CG to the axle centerline, times 1 over the gear ratio. lateral distance = CG to rear / gear ratio

Hi RM I think with the top link or pull bar setup, it acts similar to a torque arm. On a TA rear, if you have live birdcages, the balanced load setup would have the front mount point of the TA on a line starting at a point where a line projected back from the CG, square to the rear, meets the...

RM If you read to the bottom it said it was the extreme, that's not dangerous it's more like history. I don't know who is running 40 gal. tanks today, but back in the day it was commonplace with at least the northeast Modifieds. They were poly tanks, called drop tanks because they were L shaped...

I think you guys are missing the point, I never said that the front isn't a valuable tool to get balance and control acceleration, especially coming off a turn when there is still some lateral force. The point was that there is only one end of car supplying torque to the tire and pushing on the...

Tom .G Hi, I never really got into motorcycle suspension dynamics and don't know how they're linked. It looks like you're popping the clutch to take off. I was talking about having the brakes locked up. Yes, I was the rear rapping up in the front. You have to look at it like the wheel is...

Ranger Mike said I got to measure all that “real weight transfer” on a full fuel cell and in my dry sump oil pan. Should be huge. UFO Hi RM, That would be nice if we could run a whole race and still have a full tank of fuel, that wouldn't make the guy at the fuel truck happy. I'm sure you...

Hi Tom.G, I am not so sure I know what you are referring to, I guess it's about acceleration forces on a car sitting still. I will try to explain, what I think happens, better. If a car is sitting still out of gear, on scales, and you snap the throttle, with a, from the front, CW rotating...