landroversforever Posted January 12, 2011 Share Posted January 12, 2011 How much torque can a 1:1 Vee belt transmit? ~100mm diameter pulleys I'm using. The belt would probably end up a similar size to my alternator belt. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted January 12, 2011 Share Posted January 12, 2011 It's really the power able to be transmitted by a belt you want to be looking at. That can then be converted into a torque by using the radius and speed. The power able to be transmitted by a V belt depends on several factors including the tension in the belt and the angle of wrap around a pulley. Have a look here: V belt link. The maths is not the simplest. As a rough figure though, think about 1kW. If you need something more accurate, give me a few days until I'm with a decent calculator and I'll rattle some keys for you. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 12, 2011 Author Share Posted January 12, 2011 That should be good enough . The motor is sub 1Kw, so presumably it can't make more than that, ie when starting up? (like drawing more amps on start-up) Thanks! Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted January 12, 2011 Share Posted January 12, 2011 Yup, a 1kW motor should be fine on an alternator belt. An 80A alternator is about the 1kW mark anyway. If you've got torque figures from your motor, and a 1:1 ratio, then you can say torque out is the same as torque in. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 12, 2011 Author Share Posted January 12, 2011 Good to hear . Thanks for the help Quote Link to comment Share on other sites More sharing options...
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