Originally Posted by
Thefoodman52
Putting heavy-@#$ 1/5 scale wheels on those stressed savage XL axles seems to be a bad idea, and I've seen a guy on URC who was running Baja 5T fronts all the way 'round. Snapping axles (the threaded part on the outside) left and right.
However, the Super 5sc-Flux uses a center differential, and a dual-disk slipper pad for the slipper clutch on TOP of the CD. HPI took some consideration with the drivetrain on that truck at least, unlike the Savage.
There is a fix for the stub axle issue. Guys seem to have had success with replacing the spacer for the XL axles with bearings and shims so the axle is better supported. Another option is custom hexes that include the spacer. To truly solve this problem once and for all guys are ditching the savage stuff for a combination of LST and CEN Genesis axles, CVD's, knuckles and hubs.
The center diff inside the trans of the 5sc flux will help the drivetrain live with big power but it can only do so much. I've seen guys put low kv 1/8 size motors (1520, 1527 etc) on 8s with a buggy style center diff and they still destroy bulletproof diffs. That's with a 1/8 size motor not 1/5 like the Castle 2028. Upgrading to aluminum bulks and 1/8 buggy diffs seems to hold up pretty well to 8s with 1/8 size motors but you're still going to wear out everything a lot faster. From what I've seen 8s with 1/8 motors is the limit for a beefed up 1/8 drivetrain, a 1/5 motor like the Castle 2028 will just tear it up. He'll the. Castle 1/5 system already tears up 1/5 Baja drivetrain parts.