The Strongest Savage Diff Compilation.

[JasonB]

Since the IRC cup is made for the Lightning Stadium and we now know the stock Lightning Stadium cup fits the Flux, it's a safe bet that it will fit.

Problem though is that aluminum isn't very strong when you thin it down, and the cup needs to be quite thin to accept the 8x10 bearing. The issue is further compounded by the diff shaft wallering out the cup sleeve from the inside until it becomes brittle enough to snap; this has been my experience with a turned down stock cup. With a steel sleeve this problem doesn't exist. Just my opinion.

[FG101C]

What are these compatible with, internally and what bearing size? Has anybody used them?

http://www.fastlanemachine.net/prodd...LM44000&cat=22

[JasonB]

Originally Posted by FG101C

What are these compatible with, internally and what bearing size? Has anybody used them?

http://www.fastlanemachine.net/prodd...LM44000&cat=22

Appears to be a Savage X cup which uses the 10x16 bearing.

[Jahay]

Originally Posted by JasonB

Since the IRC cup is made for the Lightning Stadium and we now know the stock Lightning Stadium cup fits the Flux, it's a safe bet that it will fit.

Problem though is that aluminum isn't very strong when you thin it down, and the cup needs to be quite thin to accept the 8x10 bearing. The issue is further compounded by the diff shaft wallering out the cup sleeve from the inside until it becomes brittle enough to snap; this has been my experience with a turned down stock cup. With a steel sleeve this problem doesn't exist. Just my opinion.

alloy might not be that strong thinned down... but dont plenty of diffs use 8x16x5mm bearings.. .so why cant the savage? Also it will be going in my alloy diff cases so less flex in the diff area can only be better for it?

Im just worried that if i try the lightning diff cup, the internals i have wont fit...

[JasonB]

I don't know which other diffs use the 8x16x5mm bearings, but like I said before, if you want to use the bigger bearing, all you have to do is use the Lightning Stadium Diff Cups (HBC8019), and the Flux spiders fit inside those cups just fine; all you will need to do is sand a few thousandths off of the cross pins.

Perhaps the IRC cup will hold up just fine in an alloy bulk, let us know how it works out for ya.

[thzero]

The Lightning Stadium Diff Cup (HBC8019).

Its used in the D8/D8T and the Vorza. So it should be relavent for some time.

Originally Posted by JasonB

if you want to use the bigger bearing, all you have to do is use the Lightning Stadium Diff Cups (HBC8019)[SIZE=2], and the Flux spiders fit inside those cups just fine; all you will need to do is sand a few thousandths off of the cross pins.

[FG101C]

What about these, I ran them in my Losi truggy for...ever and they are great. Now what cup for the Savage and still being able to use the 8x16 bearing's? Kyosho's and who has the strongest spiders?

http://www.novarcproducts.com/diffcups.html

Or these... http://cgi.ebay.com/DIFF-CUP-Hot-Bod...item5adeab63f8

With these.. http://www.amainhobbies.com/product_...ntial-Gear-Set

[JasonB]

They designed the HPI aluminum cup to accept the 10x16 for a reason. The HPI ring gear uses the 8x16 because it is steel, not aluminum. The only way to build a strong aluminum cup for the savage is to put a steel end cap on it, IMO. Can someone please prove me wrong . . . I would love to be wrong on this one.

What size bearing did the cup in your Losi use? If it was an 8x16, then my guess is the diff shaft was smaller in diameter to allow for a thicker wall on the cup. Just a wild guess here because I've never owned a Losi.

[FG101C]

The Losi bearing is 8x14x4 flanged. I'm interested in this because I have decided to build a Savage from the ground up, so far I have a trans and RPM arms and a 1717 for the motor.

The other thing I was thinking was this.

http://www.fastlanemachine.net/prodd...LM40020&cat=22

and this.

http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT

Or keep it simple and use these, I don't see these failing any quicker than 8x16's..

http://www.bocabearings.com/bearing-...OS7NB2-10x16x5