NITRONUT
Well-Known Member
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- Lindenhurst N.Y.
One of the problems that savage owners have to face sometime or other is differential failure. Sometimes it can be caused by bearing failure, weakness of the plastic diff cups or improper shimming of the ring and pinion gear.
One of the best things you can do is find a new set of diffs like the ones used by CEN Racing furnished by my buddy BLAZER X.
LETS TAKE A LOOK
First thing you can see is that the entire diff is metal, no plastic here folks!
After opening the diff housing the first thing you will notice is the way the bevel gears are mounted in the housing.
There are NO cross pins to hold the bevel gears.
After opening the diff housing the first thing you will notice is the way the bevel gears are mounted in the housing.
There are NO cross pins to hold the bevel gears.
Here is a look of the typical setup of bevel gears used by HPI in their diffs.
Now lets look at the difference.
You can see the HPI`s on the bottom and the CEN bevelgears on the top. There are no cross pins holding the bevel gears in place. Instead the gears are held in place by the square holder that does not allow any flex in the drive trainand allows the bevel gear to rotate in the holder.
Here is what all four bevel gears look like installed.
Now we get to see the dreaded bearing failure common to the savage diff`s
Allmost everyone has seen this!
YES THAT THING AT THE BOTTOM OF THE PIC WAS A BEARING...LOLNow lets look at the difference.
You can see the HPI`s on the bottom and the CEN bevelgears on the top. There are no cross pins holding the bevel gears in place. Instead the gears are held in place by the square holder that does not allow any flex in the drive trainand allows the bevel gear to rotate in the holder.
Here is what all four bevel gears look like installed.
Now we get to see the dreaded bearing failure common to the savage diff`s
Allmost everyone has seen this!
Now we can see the difference in the bearings next.
The CEN on the right uses a smaller shoulder allowing a thicker bearing that should handle the abuse we put our trucks through. The stock HPI on the left uses a much thinner bearing that just cant handle the torture.
All of the diffs have good quality O-rings to keep the diff fluid in and from what I can tell shouldnt leak a drop.
The last thing you have to do is fill them up screw the tops back on and throw them in!
The CEN on the right uses a smaller shoulder allowing a thicker bearing that should handle the abuse we put our trucks through. The stock HPI on the left uses a much thinner bearing that just cant handle the torture.
All of the diffs have good quality O-rings to keep the diff fluid in and from what I can tell shouldnt leak a drop.
The last thing you have to do is fill them up screw the tops back on and throw them in!
As soon as the weather gets a little warmer and I don't have to freez my but off in the garage I will post the instalation how to`s in Part 2.
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