Login
or
Register
Subscriber & Member Login
Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!
Login
Register
Home
»
Model Railroader
»
Forums
»
General Discussion (Model Railroader)
»
Thoughts on slow speed performance
Edit post
Edit your reply below.
Post Body
Enter your post below.
"doesn't constant slow running lead to motor overheating????? easter" <br /> <br />There are two things that limit the current flow through a motor. One is the impedance (resistance) in the motor windings. This is what limits the current when it's stalled out. The other is the back EMF generated by the motor when it's running. Under very slow speed operation the back EMF drops, so the current flow goes up, which in turn increases the heating of the motor. Two things you can do: <br /> <br />1. Run the locomotive faster. <br />2. Run the motor faster by gearing it down lower to get the same locomotive speed. <br />3. Change the otor to one designed to operate at a slower speed. <br /> <br />If you have problems with your motors getting hot when running them slow, then it's time to gear them down and / or replace them with a slower-running motor. <br /> <br />The effects of a flywheel are amplified the more you gear down the motor. The smoothest running one will be one geared WAY down, with a high-speed motor and a flywheel on it. Gears can also be noisey...... It's a trade-off. <br /> <br />Mark in Utah
Tags (Optional)
Tags are keywords that get attached to your post. They are used to categorize your submission and make it easier to search for. To add tags to your post type a tag into the box below and click the "Add Tag" button.
Add Tag
Update Reply
Subscriber & Member Login
Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!
Login
Register
Users Online
There are no community member online
Search the Community
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter
See all
Sign up for our FREE e-newsletter
and get model railroad news in your inbox!
Sign up