On top of these major seasonal changes, f H and T b are elevated in incubating females. Similar to large non-hibernating mammals, tolerance of lower T b during winter seems the major factor permitting this. Our results suggest that in greylag geese, pronounced changes of f H over the year are caused by photoperiod-induced changes of endogenous heat production. Leading goslings increased daily mean f H. Peaks of f H and T b occurred earlier in incubating females compared to males. Daily means of T b together with those of air temperature and day length were the most important predictors of daily mean f H, which was further modulated by precipitation, reproductive state, and, to a minor degree, social rank. Daily mean f H was on average 22% lower at the winter trough than at the summer peak, whereas daily mean T b at the winter trough was only about 1 ☌ below the summer peak. In all geese, profound seasonal changes of heart rate ( f H) and body temperature (T b) showed peaks in summer and troughs during winter, and also daily modulation of f H and T b. We studied energy management in greylag geese. I live about six miles from your front door if you would like, I could drop by and talk face to face.Animals adaptively regulate their metabolic rate and hence energy expenditure over the annual cycle to cope with energetic challenges. That said are you offering an aluminum or steel plate to make up the difference in the thickness to get these springs to work with the multi-leaf spring perch? Whitney was the first to offer a three leaf spring that was designed to replace the mono-leaf, but required you to leave out one of the rubber isolators creating a noiser and more vibration prone ride to get the thicker spring pack to fit in the mono's shallower pocket.Įven with a slapper bar to control engine torque and spring wrap up the mono-leaf's weak spring rate at the ends allowed wheel hop especially in a panic braking situation. The mono-leaf had a fairly thick spring at the axle but it tapered down to near paper thin at the ends where it flexed a lot. The variable rate mono-leaf spring was used with all six bangers and low horse V8s (307, base 327, and later 305 motors when used with the Nova that had the same rear end design and parts as the first generation Camaro). It had a deep pocket to hold the spring pack. So a multi leaf spring used on higher performance cars (those motors factory rated over 300 horsepower and the Z/28 with it's 290 horse engine) used a 12 bolt rear with multi-leaf springs (usually four or five leaves depending upon weight and engine torque). The spring pack thickness has to match the spring pocket. In the Chevy leaf spring you have different spring pockets that clamp the spring to the rear end. To preview all of BMR’s high-performance suspension parts, please visit email, or contact them at BMR Suspension, 928 Sligh Ave, Seffner, FL 33584, 81, Fax: 81. New front mount hardware hardware (RH015) and stainless steel shackle kit (LSS001) are available separately. BMR designed the SP057s for street performance, drag race, and handling applications. The leaf springs also come with Teflon antifriction pads between each leaf for smooth, quiet travel through the range of motion. Each spring comes with new front and rear bushings, which some companies make you buy separately. The spring design, combined with precise clamp locations, give you less wheel hop and more axle control. ![]() BMR’s Leaf Springs (SP057) feature a 2-inch drop, multi-leaf design, and a 190 lb/in spring rate, reducing body roll without increasing rear oversteer. ![]() Formed to exact height, arch, and length specifications, BMR’s Leaf Springs are designed to give improved performance without sacrificing ride quality. BMR’s leaf springs give you a superior option to stock leaf springs that sag, rust, and do little to control axle wrap and wheelhop as they age. Reduce wheelhop, control axle wrap, and add the perfect stance to your 1st Gen F-body or 3rd Gen X-body with 2-inch drop leaf springs from BMR Suspension. Two-inch Drop Leaf Spring for 1st Gen GM F-body and 3rd Gen GM X-body
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