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Old 05-14-2007, 10:28 PM   #151
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Here's a link to some manufacturers that makes aluminum diff cups for the Hellfire...

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

http://www.maximizerproducts.com/max...bea_P121C9.cfm

According to Maximizer, the Hellfire diff is the same as the Kyosho Twin and Mad Force trucks...

Also, Golden Horizons makes Hellfire aluminum diffs...

http://www.ghhobby.com/products.php?cat=1
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Old 05-14-2007, 10:42 PM   #152
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checking savage and hellfire owners manuals for bevel gear tooth count compatability
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Old 05-14-2007, 10:46 PM   #153
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savage has a p1x43t bevel gear part #86030

hellfire has a 42t bevel part #86522

I guess I'll swap bevels and see if they will fit

the nova cups look just like one another ie same pic
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Old 05-14-2007, 10:52 PM   #154
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Yeah, you'de have to see if the Hellfire bevel would fit the Savage diff cup... I wonder if the diff cups are the same length and take the same bearing? If so... chances are good that it'll fit.
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Old 05-14-2007, 11:17 PM   #155
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I just couldn't wait...IT FITS!!!!!
same bearings, you just need to use the hellfire out drive shafts
stock hellfire case is 31mm across
savage alum case is 31mm across

hellfire bevel bolts right up and pinnion fits in diff houseing assembly with alum case and bevel gear (hellfire 42t) installed
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Old 05-14-2007, 11:20 PM   #156
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Great news man! Now I know I can use my Savage SS Golden Horizons diff cups that I have spares of! Cool! Thanks for contributing!
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Old 05-14-2007, 11:22 PM   #157
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no problem, well the savy is crying on the operateing table-the funny gas is starting to wear off!!
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Old 05-14-2007, 11:23 PM   #158
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I don't know the weight gain but doing 3 diffs is gonna add some fat. But probably well worth the beef, considering upgradeing to koyosho or hot bodies diffs.
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Old 05-14-2007, 11:25 PM   #159
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Yeah, but it'll be better than blown diffs all the time... if you're using the new Savage X aluminum diffs (the ones with the steel inserts for the spider pins, and they've got shims so they're nice and tight) then they should be pretty much bullet proof in the lighter Hellfire truck!
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Old 05-14-2007, 11:25 PM   #160
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That is exactly what just got transplanted...now it's off to the track to see if I can blow these up tommorrow, at least my last day off won't be boreing!!
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Old 05-14-2007, 11:27 PM   #161
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Quote:
Originally Posted by soup54
no problem, well the savy is crying on the operateing table-the funny gas is starting to wear off!!
LOL... the Savage is a tough truck... It'll get over it!

Let us know how it goes for ya tomorrow.
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Old 05-14-2007, 11:28 PM   #162
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time to put in another order to smfstore.com to replinish the supply of diff cups.
Thanks hpi for being sneaky little buggers and not saying anything about hopping up the diffs, or is this a upgrade in the new hellfire ss kit with the k4.6ho?

Just found this mod on rcu forum so some one beat me to it!! Can't win them all I guess!
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Old 05-14-2007, 11:36 PM   #163
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Could you post the link?
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Old 05-15-2007, 10:09 AM   #164
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Quote:
Originally Posted by soup54
I just couldn't wait...IT FITS!!!!!
same bearings , you just need to use the hellfire out drive shafts
stock hellfire case is 31mm across
savage alum case is 31mm across

hellfire bevel bolts right up and pinnion fits in diff houseing assembly with alum case and bevel gear (hellfire 42t) installed
NEED to use m10x16x5 bearing on alum cup output shaft instead of stock hellfire bearing m8x16x5

was in a hurry last night so I left the savage out drive cup on alum case side, funny it still fit...maybe we can use the HD diff outdrives from the savage too?
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Old 05-15-2007, 10:47 AM   #165
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everything is back together and runs pretty smooth, gonna upgrade front diff later, or when it does blow out.

noticed I bent the shock tower (HD 7075 tower) on the top by the shock, I crashed hard on clearing the track tripple...not enogh throttle. Tumbled end over end realy hard and for at least 6 maybe 7 complete rotations, no shock damage or anything else.

Any one know of a stronger better quality shock tower...or should I learn to jump better? LOL!
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