ORIGINAL: iskandar taib
ORIGINAL: bob27s
Downunder......
great observation........
The BSE-40L, 60L, 65L and 76L were developed from the CL stunt engines. That is why they have many of the same properties.
AHAH!!!! I knew it!!! Richard Oliver was talking about testing a R.O. Jett .76 not long ago, elsewhere, in anticipation of the new F2B engine rules.
In other words, these aren't designed as high RPM, super-high output engines that the heavier Jetts are. These are light weight, low RPM, high torque engines, still with very high specific output. Not the sort of engine you'd put on a pylon racer or in a ducted fan model, but something you'd put into an aerobatics plane.
Yes, exactly. As noted, the engines listed are designed for lower rpm use for scale/aerobatic/3-d type applications.
Engines can be, and are, designed for specific purposes. The control line stunt application is very similar to todays 3-D application.
The Ro-Jett engines are slightly different for control line use since they run at "full throttle" all of the time, and a main goal of engine set up is constant aircraft speed. They are fabricated to Richard's specifications.
Dub's r/c versions are optimized for not only top end power and torque , but also for midrange power and torque... as well as good fuel draw throughout the throttle range, and superior throttle response.