Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
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Chapter 17, Problem 26P
A four-strand no. 40 roller chain transmits power from a 21-tooth driving sprocket to an 84-tooth driven sprocket. The angular speed of the driving sprocket is 2000 rev/min.
- (a) Estimate the chain length if the center-to-center distance has to be about 20 in.
- (b) Neglecting chain length effects, estimate the tabulated horsepower entry
- (c) Estimate the allowable horsepower for a 20 000-h life.
- (d) Estimate the tension in the chain at the allowable power.
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(3) A circular cam 8-in in diameter rotates off-center with an eccentrity e = 1" & operates the roller
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(3) A circular cam 8-in in diameter rotates off-center with an eccentrity e = 1” & operates the roller
follower that is carried by the arm. The roller follower is held against the cam by means of a tension
spring attached a third from a fixed pivot point. The
force against the cam & roller follower is
approximately 50lb @ the low position & 80lb @
high position. The ratio of the coil diameter to that of
wire diameter is 7.0. The allowable stress on the
spring is Ss = 60,000psi. Calculate :
(a) the wire diameter;
(b) the outside diameter of spring;
(c) the number of active coils recommended.
A mini motorcycle is driven by a combustion engine with mechanical transmission. The 12Hp motor spins at a speed of 1150 rpm. The motorcycle runs at a linear speed of 45 km/h on 12-inch wheels. Preliminary center to center distance is 13”. This type of motorcycle requires two strands (conical double sleeve assembly) and is subjected to hard shocks.
Can I get a detailed explanation for Choice of chain and sprocket. (Standard part number, see catalog)
https://pdf.directindustry.com/pdf/martin-sprocket-gear/general-catalog/9091-246439.html
Chapter 17 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 17 - Example 17-2 resulted in selection of a 10-in-wide...Ch. 17 - A 6-in-widc polyamide F-l flat belt is used to...Ch. 17 - Prob. 3PCh. 17 - A flat-belt drive is to consist of two...Ch. 17 - In solving problems and examining examples, you...Ch. 17 - Return to Ex. 17-1 and complete the following. (a)...Ch. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Two shafts 20 ft apart, with axes in the same...
Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - A designer has to select a metal-belt drive to...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Two B85 V belts are used in a drive composed of a...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The geometric implications of a V-flat drive are...Ch. 17 - A 2-hp electric motor running at 1720 rev/min is...Ch. 17 - The standard roller-chain number indicates the...Ch. 17 - Prob. 24PCh. 17 - A double-strand no. 60 roller chain is used to...Ch. 17 - A four-strand no. 40 roller chain transmits power...Ch. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - For Prob. 17-29 estimate the elongation of the...
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