Thread: mII spring rate.

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This thread tweaked my memory banks a wee bit and if I recall, a post I made a year or so ago.

I took a look at the Heidt's and QA1 sites and if I'm reading them correctly, my coil over springs are much too light. While I haven't done any further research yet, a Model 'A' roadster has a weight distribution of 1400 pounds front and 1300 in the rear. One site says I should have 400 pound springs in the front, the other 350 with both saying, I believe, 250's in the back. Since my TCI chassis is set up more like a '32 with the gas tank in the rear, probably should look at 300# springs. I'm not going to do anything about purchasing replacements until I can actually check the installed angles and measure the wire diameters to see what I really have. Supposedly they are color coded, but I've never found TCI's paint dot. My records do show fronts @ 250 and rears @ 200 and a phone call to the mfr said that as well. After a "spirited" drive yesterday on a winding road, the car still wallows - badly and the shocks are turned up as far as they will go (and with F&R sway bars). Of course, the ride was during a snow flurry at 34-35 degrees.........


12/12 - The spring rates are actually 200# front and 250# rear done via calculation using a formula found in a book in my "library". Factoring in the the installed angle of 15*, they then become 186 and 232 which in my opinion is very light