A NASCAR Cup engine piston speed reaches 8800 FPM at 10000 RPM with an RSR of 1.91.The F1 numbers are due mainly to the engines’ short strokes. Racing • Performance • Off Road • 4 Wheel Drive • Towing • Motorhome, SAVE POWER WITH UPGRADED PERFORMANCE RACING WATER PUMPS, ROSS BENTLEY TESTS A NEW DRIVER “TRAINING TOOL", HEAT EXCHANGER FOR SUPERCHARGED 13-15 and 67-69 CAMARO W/LSA ENGINE, THE BEST WAY TO IMPROVE POWER OF A SUPERCHARGED CAMARO OR MUSTANG, More Power Faster Acceleration for Supercharged Mustang GT500, Upgraded Water Pumps Cars Trucks Performance Racing OffRoad Motorhomes, UPGRADED HEAT EXCHANGERS BOOST POWER OF SUPERCHARGED CARS AND TRUCKS, UPGRADED CAR HEAT EXCHANGERS IMPROVE SUPERCHARGER PERFORMANCE ALL CARS, NASCAR and FORMULA 1 ROD STROKE RATIO & PISTON SPEED. RPM Diff Ratio OverDrive ie. Enter the following values. Piston rod length (in.) Find a Spicer parts distributor today, or find where you can place your order now on Dana’s streamlined eCommerce platform, DanaAftermarket.com. This spreadsheet is temporary until we have Rod Length What is more, the piston pin location in the piston also affects the result of the calculations. RPM. This is also known as top dead center, a term used when timing the engine. Rod Ratio: a = Rod Length: b = Stroke of Engine: Formula: a / b: Example: 6.0 / 3.5 = 1.714 Search, Identify and Order Parts - DanaAftermarket.com. Exact weights may vary due to exact composition of alloys, the purity of the materials and other factors. This site uses cookies. software. Rod Ratio Calculator Enter the length of your piston rod under Rod Length and the stroke length of your engine crankshaft under Stroke and press solve to find the rod ratio for your vehicle. It is pointless to address the length of the connecting rod in any engine, racing or otherwise, without looking into the ratio of the length of the rod to the length of the stroke of the crankshaft. This rod stroke ratio (RSR) is calculated by dividing the rod length by the stroke value. A shorter rod will create more pressure on the piston skirts but it will have a smoother acceleration and deceleration curve at TDC and BDC. All rights reserved. Weller Truck Road Speed Calculator. By continuing to use this website you are giving consent to cookies being used. online calculators built into the website, which will require no special Measure the ratio between the length of the piston rod and the stroke length of the engine crankshaft, which moves the piston from the bottom of the cylinder wall to the top. The rod to stroke ratio affects the angle at which the connecting rod applies force to the piston. For more information visit our Privacy Policy. Tire Diameter in inches (Radius x 2) MPH Calculate. This calculator provides a simple way to calculate the ratio between the length of the piston rod and the stroke length of the engine crankshaft. Choose what to calculate, then fill out the remaining inputs and click Calculate. This load increases at the square of the speed, and at higher speeds the rings, pistons, and pins receive less lubrication from the spinning crankshaft. It is pointless to address the length of the connecting rod in any … At piston speeds above 5000 FPM, pistons must be equipped with forced pin oiling slots to cool the pins, the rings, and the pistons. Also listed below are a few commonly used formulas gathered by our engineers. We have consolidated some of our most helpful calculators into a single Measure the ratio between the length of the piston rod and the stroke length of the engine crankshaft, which moves the piston from the bottom of the cylinder wall to the top. downloadable MS Excel Spreadsheet. Metric to Calculate. A NASCAR Cup engine piston speed reaches 8800 FPM at 10000 RPM with an RSR of 1.91.The F1 numbers are due mainly to the engines’ short strokes. Conversely, when the pin is moved toward the non-thrust side of the bore makes the rod act longer. Rod Ratio Calculator. MPH. This site uses cookies. NASCAR and FORMULA 1 ROD STROKE RATIO & PISTON SPEED At 18000 RPM Formula One engines with an RSR of 2.56 achieve peak piston speeds of over 7000 feet-per-minute (FPM). For more information visit our, Helpful Automatic Calculators (Requires MS Excel). By continuing to use this website you are giving consent to cookies being used. Using the rod/stroke calculator and piston pin location calculator along with a modern advanced personal computer based engine development software unlocks a plethora of ideas and results that can be used to improve performance, increase BMEP, torque, power endurance and reliability. Rod Length Calculator: Wallace Racing BACK to Calculators This Calculator will figure the Rod Length using your inputs. This calculator provides a simple way to calculate the ratio between the length of the piston rod and the stroke length of the engine crankshaft. Diff Ratio. Copyright © 2020 Wiseco Piston Company Inc. All Rights Reserved - Use of this site is subject to the following list of. The calculator below calculates the mass of a solid rod made from a range of common materials. Rod Length: Block Deck Height: Piston/Deck Clearance: Piston Compression Height: Stroke: Input All Info, Please: For a more advanced calculator try this one: Rod … Reduced oiling can result in overheated piston tops and skirts as well as the rings and pins. Crankshaft stroke length (in.) At 18000 RPM Formula One engines with an RSR of 2.56 achieve peak piston speeds of over 7000 feet-per-minute (FPM). © 2020 Dana Limited. .73, .84, .86. Tire Diameter. Moving the pin closer to the thrust side causes the piston to acquire shorter rod characteristics. Direct Fit, Performance, Racing, Jeep, Off-Road, Towing, 4X4, Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device, choosing a selection results in a full page refresh, press the space key then arrow keys to make a selection.