APPLICATION: WORKS WITH SAVAGE 21 RTR, 25 RTR, & 25 SS
This is the HPI Heavy Duty Savage Center-Rear 8x93mm Universal Shaft HPI86270. This is a very high quality universal shaft for the Savage trucks. HPI says: This universal shaft replaces the Center-Rear driveshaft of all Savage trucks and deliver improved durability and more efficiency than the stock part. Theyre machined from high strength steel, hard chromed for a shiny durable finish that is easy to clean and looks great, and fully rebuildable to add extra life when it comes time for maintenance. The unique "muscle bone" design makes these extremely durable and perfect for extreme driving conditions and competitive racing. These universal shafts are factory designed, factory manufactured, and team tested for the best fit and durability on the market.
WHY BOTHER TO UPGRADE TO A UNIVERSAL STYLE SHAFT?? Why not just use the stock dog bones or some replacement heavy duty dog bones? Well, this can definitely be done. In the case of the stock Savage dog bones, early production shafts were not very reliable and tended to twist, bend, break. Heavy duty dog bones could also be an option. Regardless, there are some definite advantages to using a universal style drive shaft instead of a dog bone.
Read what was written in RC Nitro magazine (April 2003, pg. 95) regarding Universal Joint axles:
"A dogbone is the most common type of drive axle; it looks a bit like a dog bone and uses pins to engages slots in the outdrives. It works, but the parts tend to chatter when the steering hubs turn, and the parts operated with a fair amount of friction. Universal-joint axles operate more freely and wont chatter; that means better performance and extended wear."
The above comments are written more specifically about the outdrive shafts going out to the wheels, but the principle of less friction in a universal joint still applies with the center shafts.
LESS FRICTION=MORE AVAILABLE POWER TO THE WHEELS!
Now Savage owners can get very high quality and high strength universal shafts for their trucks from HPI!
REMINDER: Do not forget the HPI Savage Heavy Duty Center-Front Universal Shaft HPI86269 to upgrade both center shafts.
