Are you madabout kit cars

   
 "We've Got Kit Cars Covered" Information about Madabout-Kitcars.com Contact Madabout-Kitcars.com         Home of UK kit cars - madabout-kitcars.com Various kit car write ups All the latest kit car news Kit car related and general discussion
Search Madabout
Manufacturers
Kit Cars
Kit Car Data sheets
Picture Gallery
SVA Knowledgebase
Clubs & Communities
Build cost estimator
Kit cars for sale
Knowledge Base

KitcarUSA.com
Classic-Kitcars.com
 

CATEGORIES (articles) > Engine, Gearbox > Technical > Band brake

Band brake


A band brake is an engineering device for loading a rotating shaft and measuring the torque applied to it. It is mainly used to determine brake horsepower. In its simplest form an engine is connected to a rotating drum by means of an output shaft. A friction band is wrapped around half the drum's circumference and each end attached to a separate spring balance. A substantial pre-load is then applied to the ends of the band, so that each spring balance has an initial and identical reading.

When the engine is starting the frictional force between the drum and the band will increase the force reading on one balance and decrease it on the other. The difference between the two readings is used to calculate torque, because the radius of the driven drum is known. If the engine speed is measured with a tachometer, the brake horsepower is easily calculated.

The experiment must be performed for many engine speeds to obtain power and torque curves for the engine, since there is a non-linear relationship between torque and engine speed for most types of engine.




Related Articles

CATEGORIES (articles) > Engine, Gearbox > Technical > Band brake

 
Search for keyword     



This content from Wikipedia is licensed under the GNU Free Documentation License.


copyright madabout-kitcars.com 2000-2017
terms and conditions | privacy policy