News:

Welcome to the TigerTriple forum! Over the years we have gathered lots of great information on all things Triumph Tiger. Besides that, this is a great community that is willing to help you keep your Tiger moving. So, feel welcome! Also, try the search button for answers to your questions. If you have any questions, PM me on ghulst.

Main Menu

How does a starter sprag clutch work ?

Started by fraserdog, October 20, 2015, 11:11:58 PM

Previous topic - Next topic

fraserdog

In relation to another post of mine i want to get my head around a sprag clutch works,i know centrifugal force engages it when the starter motor spins but does it stay engaged while the engine is running and drop out when the engine stops? If so how does the starter motor disengage? I am a mechanical engineer by trade so understand the principles but without one in my hand or an exploded diagram to go by i was just wondering what makes a sprag tick  :icon_scratch:
1974 Honda CB500/4
1994 Kawasaki Zephyr 1100
2002 "Girly"
1998 Africa Twin RD07a

Mustang



a triumph sprag is similar
99% of time its the spring that goes bad .......................like this ktm did