The "limiters" are the blue collars around the high and low speed needles.

They are there ostensibly to prevent newbies from "mis-tuning" the engine...

However what tends to happen is that the limiters PREVENT you from PROPERLY tuning the engine.

Typically the correct setting for the engine is just beyond what the limiter permits you to set...

Then the low speed needle tends to "walk" as you advance or retard the throttle, this throws the engine tuning off while the plane is in the air...

While all of this can usually be fixed, it's a lot of needless aggrevation.


That said we had one guy out at the field with a brand new PulseXT PNP that had the Evolution .46 in it.

I started the engine on the first try, after setting the limiters to their mid range.

I had him run a tank through the engine. It idled VERY well at a very slow speed, so I tuned it and let him fly it...

Not too bad... for an "out of the box" experience.


My experience with the 1.00NX have been less than good though...

As Fastsky said, I'll put in a TH or GMS engine instead...

They require a few tanks to break in, and just a bit more work, but they do not have these problems... and are less expensive.