The Ultra Light Assist forum is for exploring options and improvements to Ultra Light Assist (ULA) systems for otherwise human powered vehicles (HPVs).
Common reasons for ULA include assisting acceleration and adding boost for a pedaler to climb hills. These reasons may help make HPVs more palatable to a larger audience. People who are "too far" or subject to "hills too big" may consider ULA to make a cycling commute a reality.
ULAs are often considered for installation on delta or tadpole trikes. These trikes, sometimes called velos, often have fairings to improve aerodynamics and protect the rider from weather.
The ULA group is moderated and you must contact a moderator to be added to allow access to files or post comments. This level of security is regrettable but necessary to counter spammers. Thank you for your understanding.
Shaft speed squared may be true at full power, but I'd like to see evidence whether it is strictly true when throttled. The eddy current and hystersis loses
... * Then just use the high temp value or the one for the current you normally run at. ... * I don't agree that eddy current losses are a significant portion
Ok maybe this will go thru. been trying for the last couple of days ... I need IC for touring but electric seems the best solution for commuting and around