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Post by srx660 on Aug 30, 2018 11:32:03 GMT -5
While it may let you have very good parking lot fun, I'm not sure i would like this much of a sharp turning radii in a high speed lane change. I keep thinking it could go wrong quickly. srx660
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Post by DaveJ98092 on Aug 30, 2018 12:18:22 GMT -5
I would hope that the steering is not real quick. With that much angle a 16:1 ratio would be about the fastest. I had a Shelby Charger and Carrol Shelby put a 14:1 ratio rack in them and it took a but getting used too not over steering. A quick flick of the wrist could cause the back end to come around real quick. Going from a normal 20:1 ratio to the 16:1.
It is a common thing for builders to do is go to a real fast ratio. But when was the last time you used full left lock to full right lock? You can get racks in the 8:1 and 12:1 ratios but, IMHO, it becomes too twitchy.
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Post by Liteway on Aug 30, 2018 13:22:11 GMT -5
Slide recovery is an important characteristic in a hard driven tadpole. Best aids are quick steering and lots of available lock. Extra lock can get you out of a slide even after extreme slip angles have developed. That is the reason for the outrageous steering angle capability the Lotus Seven (or knockoff) above is showing. No matter how far the rear steps out, you can still get the front wheels pointed straight down the road up the point the car is in a near broadslide. Both quick steering and big lock angles are also great for shooting u's in a vehicle that might not have a reverse.
That's if you value athleticism over stability. If you plan to do most your riding on straight roads without excessive horseplay, then I agree with Dave. JMO.
Later: Lotus Sevens and replicas have used numerous steering boxes over the years, but about 1.75 turns lock to lock is popular. On the extreme end, Formula one cars often use a 1 to 1 ratio, which gives a 45 degree angle at the front wheels when the steering wheel is turned to that same angle. Imagine 220 on the straight with that steering!.
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Post by Liteway on Aug 31, 2018 12:16:18 GMT -5
Correction. I think my source on the 1 to 1 ratio stuff for formula 1 was off. After some thought , It sounded implausible to me so I did some more research. I found another estimate of 7 to 1, a quantum difference. After tying to nail down a true varifiable number, I wish I had never mentioned it.
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Post by DaveJ98092 on Aug 31, 2018 14:08:49 GMT -5
My 1965 Plymouth Barracuda had a factory 26:1 ratio manual steering box. I changed it out with a Firm Feel factory cop cars 14:1 power box and added a longer pitman and ideler arm so the ratio was about 12:1 when all done. It was nice for when I got into trailing throttle oversteer. But in commuting it was not so much fun.
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