The Strongest Savage Diff Compilation. - Page 2 - RC-Monster Forums

FG101C · 01.28.2011, 01:35 AM

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

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

Jahay · 01.28.2011, 06:49 AM

Quote:

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 · 01.28.2011, 06:04 PM

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.

JasonB · 01.28.2011, 06:14 PM

Quote:

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.

thzero · 01.28.2011, 07:15 PM

The Lightning Stadium Diff Cup (HBC8019).

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

Quote:

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 · 02:57 AM

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 · 12:42 AM

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 · 12:49 PM

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

simplechamp · 01.29.2011, 01:51 PM

I have pretty much the exact diffs you guys are talking about, see my post here: http://www.rc-monster.com/forum/show...54&postcount=7

The only thing I'm not sure about is the ring gear, I'm using Sportwerks and Jammin ring gears.

JasonB · 01.29.2011, 02:52 PM

FG101C, I think your suggested diff combo would be VERY tough! Too bad there isn't a diff cup like the CEN that is a drop in for the Savage.

simplechamp, What sized bearings does your combo use?

FG101C · 01.29.2011, 03:09 PM

I am honestly thinking that if the main reason for this is to eliminate the 10x16 bearing that this is getting to be a bit much. I mean every rc is going to require some maintenance, and a good high quality ceramic should last.

I'm realizing how much and how long it's going to take me to finish this truck and it's making my brain hurt...

Plus I don't even know how to get thos FLM super hybrid bulks, Mike dosen't have them listed on the site and trying to email for info is likely not going to happen.

JasonB · 01.29.2011, 04:40 PM

Yea, if you want a direct drop in option, the Boca bearing with the stock Flux cup may hold up just fine, or you could try the Hot Bodies cup.

If you want to save some money and still have a tougher diff, you could just put the CENs in the stock Flux bulks. Of coarse, this would not be drop in.

simplechamp · 01.30.2011, 08:45 PM

Quote:

Originally Posted by JasonB

simplechamp, What sized bearings does your combo use?

8x16x5

VW1109 · **Vorza Savage diff interchangeability? -** 01.30.2011, 08:51 PM

Does anyone know if the Vorza ring and pinion will work in a savage flux? I guess the biggest question is the length of the pinion fitting through the diff housing. Do you think the helical gears would hold up?

Jahay · 01.31.2011, 09:30 AM

No the helical gears of the vorza definitely wouldnt hold up...

MAYBE If they were in an alloy diff case with no flex... but i wouldnt try it...

OK GUYS! I REALLY NEED TO GET MY DIFFS MADE UP!!!

and need to just ask some final questions to see whether this will work...

Firstly... i think bocas are awesome.. .but im not replacing 2x $20 bearings every time i open up my diffs! So that is a no no for me...

I ideally want to get rid of the silly thin 10x16x5mm bearing...

So what will definitely be used???

The Spider Internals - Hot Bodies Hardened Steel Differential Gear Set [HBSC8101-1] As it seems these are the toughest on the market that work with the bulks we need to use...http://www.amainhobbies.com/product_...ntial-Gear-Set

RING GEAR - HPI Bullet Proof Ring gear

Axles - Stock Super Hardened Hpi Axles.

JUST THE CUP IS NEEDED....
So questions regarding the cup

Regards to The Lightning Stadium Diff Cup (HBC8019). http://www.hotbodiesonline.com/products/en/hbc8019.html

You say that it would accept the:
BP Ring gear, HB Internals, and accepts the 8x16x5mm bearing.

BUT as it is plastic, i just can not trust that it would be able to cope with the high power of a 9-10s Brushless system...

SO ALLOY CUP IS NEEDED

It seems that the only cup that may work is the Lightning Stadium IRC Alloy Cup http://www.innovative-rc.com/lightni...ver-p-209.html

We know it fits in the flux
we know that the BP Ring gear is accepted and the screw holes all line up
we know the hardened spider gears will fit. (what slide in blocks?)
BUT WILL THE OUTPUT AXLES SHAFTS FIT from a flux???

SimpleChamp - Can you tell us exactly which IRC Alloy cases you are using??? You say they work with the spider gears mentioned... But do they utilise some form of slide in block like the savage??? And if so, which ones do you use? You dont by any chance have pictures of everything installed inside the diff cup to you?
Also are the axle shafts you have used, the same size as the SHD Flux ouput shafts???

THANKS A LOT
I think these are the only Q i need answering before i give it a go...