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# belt drives

Question asked by zaveri in #Coffee Room on Mar 10, 2012
zaveri 路 Mar 10, 2012
Rank A3 - PRO
hey guys tell me how to determine the following:

consider two v-pulleys connected by a v belt. the speed at which the driving pulley rotates is known . how do we determine the torque on the driver pulley as well as the speed of the driven pulley and the torque transmitted to the driven pulley by the driver.

we know : the diameters of both the pulleys

the angle of slip of the belt Posted in: #Coffee Room
Ramani Aswath 路 Mar 10, 2012
Rank A1 - PRO
zaveri
hey guys tell me how to determine the following:
consider two v-pulleys connected by a v belt. the speed at which the driving pulley rotates is known . how do we determine the torque on the driver pulley as well as the speed of the driven pulley and the torque transmitted to the driven pulley by the driver. we know : the diameters of both the pulleys
the angle of slip of the belt
This may help:
https://www.emerson-ept.com/eptroot/public/schools/beltchan.pdf
Rank A1 - PRO
bioramani
server trouble. Multiple posts.
Yeah, even I faced one!!! 馃様 The_Big_K, please look into this...
Kaustubh Katdare 路 Mar 10, 2012
Rank A1 - PRO
Problem fixed. We're performing server operations that result into lag. Sorry for the inconvenience.
Rank A1 - PRO
The_Big_K
Problem fixed. We're performing server operations that result into lag. Sorry for the inconvenience.
Is it just me? The quoted post says it is #2, while there are more than 3 posts above!!!
Kaustubh Katdare 路 Mar 11, 2012
Rank A1 - PRO
Praveen-Kumar
Is it just me? The quoted post says it is #2, while there are more than 3 posts above!!!
I deleted the posts, that's why.
Rank A1 - PRO
The_Big_K
I deleted the posts, that's why.
Hey, wait... This is an awesome thread... Goes in the number of:
#1
#1
#1
#2
#3
#4

Kaustubh Katdare 路 Mar 11, 2012
Rank A1 - PRO
Praveen-Kumar : You are spamming this thread. Stick to the topic, please.
CE Designer 路 Mar 12, 2012
To determine the torque on the driver pulley you must first find the tensions T1 and T2 on the belt.
Torque = (T1-T2)*(Radius of the driver pulley)
To determine Speed of the driven:
Use the ratio: Speed of Driver * Radius of Driver = Speed of Driven * Radius of Driven
i.e. v1r1 = v2r2
zaveri 路 Mar 12, 2012
Rank A3 - PRO
CE Designer
To determine the torque on the driver pulley you must first find the tensions T1 and T2 on the belt.
Torque = (T1-T2)*(Radius of the driver pulley)
To determine Speed of the driven:
Use the ratio: Speed of Driver * Radius of Driver = Speed of Driven * Radius of Driven
i.e. v1r1 = v2r2
thanx a lot dude, now can u tell me how to determine the belt tensions
CE Designer 路 Mar 12, 2012
e^(u)(theta) = (T1-Tc)/(T2-Tc)
where T1 is the maximum tension which the belt is specified for
u = coefficient of friction
Tc = mv^2
m = mass of the belt

You can now find T2 knowing T1 and Tc.
be sure to use standard units and theta is in radians
zaveri 路 Mar 12, 2012
Rank A3 - PRO
CE Designer
You can now find T2 knowing T1 and Tc.
be sure to use standard units and theta is in radians
thanx again. but the problem is i do not know T1 either . now what to do
CE Designer 路 Mar 12, 2012