jbcollier

I bought the Pirellis for my Seven from Longstone. Came quickly and all five spun up nice and true, and took very little weight to balance. I like the tire but have no seat time in the car on anything else. I also chose "fat" 165R13s -- at least they were considered "fat" in the 1969! I'm not racing and am just enjoying the car as designed. The Edmonton Police just run winters all year round. Saves money in the long haul and doesn't compromise safety too much though I wouldn't line up for a long, high speed chase in summer with winters on. Studded tires? That's a tough one. Under certain conditions they are known to "skate". Back in the old days when rubber was uselessly hard in winter, you bet, studded all the way. Now? I'm not convinced though I admit that every winter I have at least one sphincter-puckering moment where I revisit/regret my decision!

I own a Seven to use, not collect and show. Lots of people see it in action, no worries there. My never-to-be-forgotten car memories from my youth all involve cars found in the wild, not penned up at a show. I encounter a lot of interest in my cars and I always respond in a friendly manner. If they ask and are not obviously filthy, carrying ice cream cones or knives, I have no problem with anyone getting into the car. What annoys me is finding people already in the car when I exit the grocery/store/restaurant/etc. I try not to fall on them and slay them on the spot but it is a difficult urge to control. YMMV

https://www.7-dna.com/eugene/home.html Seems a bit more biased to track days than regular roads.

Then use a three point on the street where it far more likely to have a front collision. There aren't buildings, poles, curbs, trees, or nuts coming at you on the track.

+204, do not use 4 point belts. People have been killed using them.

Edmonton is a dumb place to build a city. Gorgeous, sure, but bed rock is 80 to a 100 feet down. Above that are multitudinous layers of clay, coal, gravel, and other crap. In freeze/thaw cycles, the land heaves like a wallowing water buffalo. Roads don't stand a chance.

Just for your information, the spring fitted was a RedLine Components 75532H. Faulkner confirmed that they make the springs for Redline and the nominal spec is 14" long and a 100 lb rate. I'll chime in again once I have the new 80 lb springs on and the roads have cleared.

Supplied by Redline. Look to be from Faulkner. I was told they were 100 lb springs and they look to be.

Faulkner's got back to me and they are a much more reasonable £125 per spring for a total of $320 not including shipping. Indeed a much more digestible sum.

Don't ask me to explain why, but stacking two springs gives you a reduced rating. With two having the same rating it gives you a working rating half that. Stacking Spring Equation: (Top Spring Rate x Bottom Spring Rate) / (Top Spring Rate + Bottom Spring Rate) = Rate Example: 200 x 200 = 40,000 (Top Spring Rate X Bottom Spring Rate) 200 + 200 = 400 (Top Spring Rate + Bottom Spring Rate) 40,000 ÷ 400 = 100 Rate Curtesy of Landrum Spring It is more commonly used to make a dual rate spring with springs of different rates. You can also add stops that cut out one spring at a set point in the travel. All glorious fun for the hardcore, high-speed, off-roader.

I think we might be comparing apples and oranges. Was your Birkin a live-axle? Were you running narrow tires (165/80R13)? I also assume your Birkin had a proper space frame not a Chapman-ordered, willowy one that the S2/3 Lotuses came with. Yes, the TC engined frames were better braced but mine is a lowly crossflow with a pavement toasting 84 hp.

Sounds ok to me. Below -10°C, I wear a heated motorcycle vest.

I can get the springs made up, no problem. For a reasonable price I need to order 50. For a single pair I’m looking at $1200 to $1800. I think that’s why they’re no longer available. Not enough demand to justify making 50.

Found some old stock at David Bean, 1.9" ID 16" 75 lb springs. Pretty much stock S2/3 springs. That was their last pair though and probably no plans to reorder.

Thanks but those 2 5/8" ID