The holy grail of off road race car building is building the smoothest, longest lasting diff possible. Many of us pony up big bucks for thrust bearings, carbide diff balls, and lapped flat diff rings all in the quest for the smoothest diff action possible. If this is you, and you race a Losi car, unfortunately the factory parts will never allow you to build the diff to its fullest potential. The manufacturing tolerances on several of the components are not tight enough to allow smooth differential action. Much like lapping diff rings (BFast RC sells pre-lapped diff rings) there are several easy things that can be done to take your diff to the next level of smooth, and make it last longer as well.
Think of your diff assembly like a gun barrel. The better everything lines up together, the better it will perform. The problem with the factory parts lies in their alignment: the ends of the diff spring and diff screw are not square enough (perpendicular) to allow proper alignment.
By chucking the spring and diff screw in a lathe and trueing up the ends, diff life is greatly improved, and its much smoother as well. Additionally, make sure to have a few diff screws on hand, as it is common to receive slightly bent ones from the factory. These should be discarded and not used.
Before assembling the diff, be sure to compress the diff spring several times in a vise so that it takes a set in the most even manner possible.
With just these few tips, your diff will be as good as the factory guys.
No comments:
Post a Comment