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Let's say your largest acceptable ring gear has 100 teeth, and your largest acceptable planet has 45 teeth, your largest possible reduction (assuming all your gears are of the same module - using different modules in the two stages, one can attain higher gear ratios ) will be 1/[1-(44*100)/(45*99)] = 81 to 1.

Epicylic Gears - Ratio Calculation. Purpose of Calculation - To calculate the ratios of various epicylic gear arra

Substituting for v and w: R1 rot = 50 + 50 (22* ÷ 12*20*94) = 69.5 rotations. The relative speed of S1 and R1 is 100 rotations vs. 69.5 rotations. Therefore the speed of R1 is: R1 speed = (100 RPM) (69.5 rot ÷ 100 rot) = 69.5 RPM. The planetary gear speeds are calculated in a similar manner.

Number of Planets. Solve for: Sun Gear, Planets and Carrier, Ring Gear. Sun Teeth. Planet Teeth. Ring Teeth. Sun Speed. Carrier Speed. Ring Speed.

4.3 is the number of teeth on the sun and ring gear in the white cells. 4.2 indicates Optimum -2 and this will allow the number of teeth on the planets to be the actual 64 4.4 is now the calculated speed of the carrier which is the output speed of the 1st stage Go up to line 1.7 and you will see "Speed (Planet in planet carrier)".Gear Generator is a tool for creating involute spur gears and

This calculator helps generating these possible gear configurations while calculating turn ratios in different scenarios: when ring gear is fixed, 

F = Rotation of follower or driven gear or pulley per revolution of driver. Note a (F = rotation of planet type follower about its axis.) or Speed Ratio 

13.3.2 Speed Ratio Of Planetary Gear System In a planetary gear system, the speed ratio and the direction of rotation would be changed according to which member is fixed. Figures 13-6(a), 13-6(b) and 13-6(c) contain three typical types of planetary gear mechanisms, depending upon which member is locked.

Willis equation for planetary gears In this equation, n denotes the rotational speed of the components and z the number of teeth of the 

Calculating ratios using equations. Calculating ratios using planet gear instantateous velocities. Introduction. An