Originally Posted by mattleegee
Do the hop ups for these motors really work?
Im talking about the
Lightweight front housing and the aluminum rear cover for cooling?
Short answer, Yes.
Long answer, depends.
How close to the performance envelope do you run your motor consistently?
The ceramic bearings will run smoother, longer. The more you abuse/neglect your motor, the more that will pay off. They are NOT, however, install and forgets like most people believe, they just have an increadibly long life under the same circumstances when compared to standard bearings.
A reduction in weight CAN help the overall car balance with the front housing. You have to decide how much time and $ a few grams is worth to YOU.
As for the cooling endbell, it has more surface area, but that will only make a significant difference if you have some air moving over it.
Like any assembly, it's a system, not just a collection of parts, and while the overall benefit of one or more optional parts might be small, taken as a whole with all of the other small changes to save weight, redistribute weight in a more constructive manner, or effect greater cooling, it can add up in the long run.
Most folks, however, are not running their equipment nearly as hard as they think they are or have sufficient tools to properly measure (much less set up) weight distribution (although all of the above is becoming more common). Never mind the collection of crazy cooling mods, some effective, most junk.
In the long run, if you THINK it's helping you, maybe it is.
If you're in the top 10% of the drivers at your track (based on lap times and consistency), then you're probably already maximizing your set up and the few grams or degrees these parts will bring you will help you to cover all of the bases and ensure that when you get beat by 1/10th of a second in the A main that your equipment wasn't what held you back.
For the rest of us more normal sportsman class users, it opens the envelope somewhat of reliability and provides an extra margin in the fudge factor of weight distribution and maintenance requirements. Mostly, though, it just makes YOU faster because your wallet is lighter.