New Flux diffs in a few weeks !

[plaviblue]

Originally Posted by Trike

I'm running 6s with the punch control set to 100% and reduced the throttle curve. I've broken 5 rear diff pinions. I made sure they were shimmed properly each time I replaced it.

I now have the CEN diffs in there. I took it out for the first time a couple weeks ago and somehow managed to crack the rear bulkhead where the pinion comes out. I wasn't even driving it hard. The rear pinion completely tore through the bulkhead. Both gears were fine when I took it apart.

I got the bulkhead replaced and figured the damage was a fluke. Last Saturday, It was holding up great. I was driving fairly recklessly doing backflips off of jumps and had some bad landings that would've broke the stock pinion right away. At the end of the day, I did a standing backflip off a curb and heard something crack. After it landed, I heard the click from the rear diff. I'm pretty sure the pinion lost a tooth. I saw exactly what happened though. When I did the backflip, I saw the rear wheels hit the curb and that's when I heard the crack. I haven't torn it apart it to see the damage, but chances are the pinion broke a tooth.

Everytime I broke a stock one, It was from doing a backflip and landed hard. I always let off the throttle when i'm doing the backflips, but maybe i'm not letting off early enough.

The CEN gears seem to be significantly stronger, but not quite "bullet proof" yet. Then again, I am driving it harder than I probably should.

Hopefully HPI's new diff will be much better.

Amen to that brother, In the last year I have EXPLODED a total of 44 spider gears in my FLM savage!! NO this is not a exaderation(11times x 4gears).
Everything is shimmed and built correctly. The truck weighs 18.5 pounds and has a NEU 1521 2d motor on six cells so torque is incredible. Have not tried the CEN diffs yet but the Flux mod does not help. Have been working with Jamie from FLM to try and fix the problem and no luck.
So I hope to god they have this fixed.

[plaviblue]

Ok, so I was just on the site and this is not a diff set, but just the ring and pinion....no spider gears.

From the site...
This Machined Bulletproof Diff Bevel Gear Set is our toughest diff set-up ever for the Savage monster truck line. The ring gear and pinion gears are precision machined from high carbon steel and have stronger gear profiles for the ultimate in durability. The 29T gear is machined to use the included "oversized" ball bearing for extra durability and efficiency.

This diff gear set was developed for extremely high horsepower applications like the Savage Flux and Savage XL. It's so strong that it replaces the 86922 and 102246 Heavy Duty and Super Duty gear sets, both now discontinued. So if you're using big block nitro engines or high voltage brushless motors, get the new Machined Bulletproof gear set!

Each package upgrades one diff, we recommend getting a pair of them so you can upgrade the front and rear diffs. Fits all Savage trucks. Recommended for use with 102272 Composite Gear Box/Bulkhead Set

[Nard Cox]

True, that news has been out for a while now ;).

You can order them for $25 a set.

[Unsullied_Spy]

So you have to buy these separate, they aren't updating the truck to make the drivetrain as tough as it should have been from the beginning?

[Nard Cox]

I've read that from now on forward the Flux does come with the new Bulletproof diffs installed (offcourse when the old stock is sold). Think HPI got tired of handing out all the Bulletproof diffs that they decided to put then on in the factory.

[Unsullied_Spy]

That's good to hear. I have been toying with the idea of getting a Flux but the weaknesses in the transmission and differentials have kept me away from them. I tend to be rather rough on my RCs and I need something that can handle abuse well.

[Nard Cox]

Well if you want to abuse a car then your choice for a Savage Flux is dead on. This truck really is tough as nails. The diffs are a weak point but with the new bulletproof diffs it makes for a real solid basher.

I doubted for like 3 months between the ERBE and the Savage Flux, but because we don't have a track nearby and I always bash I choose for the Savage Flux. No regrets so far ;) (almost 4 months).

[Unsullied_Spy]

Sweet, sounds like a good choice then. I love my Losi Muggy to death, with just a couple minor upgrades it's relentlessly durable and very fun to drive. The Savage won't drive nearly as well (being a Monster Truck rather than Truggy) but I'd like to have a secondary truck to bash when the Muggy is out of service.

[JThiessen]

I just ordered a pair of those. Figured that since I have to pull my rear diff off to replace the bulks/gearbox, I might as well replace the gears now.

Does anyone know if there is a difference at all between what HPI calls the "composite" gear boxes, and what comes stock on the flux? If they relaly are stronger, then I might try those before I pop for FLM's.

[Slowkrawl]

I am still not convinced on the new diffs, the problem with the stock flux diffs is that they were already TOO hard. If anyone looked closely at their broken diff you would probably notice the teeth were broken clean off.

[JThiessen]

You are in fact correct on that, but I'm hoping that the "new stronger profile" will help alleviate that. Unfortunately, they don't get specific enough on their material spec and hardening for me to make an educated choice.

[plaviblue]

I am working with Jamie at FLM in getting a CEN/HPI/FLM upgrade for the savage/flux. If it works out right you should be a truly bullet proof complete diff that ready to drop in and needs no shimming. Will keep you up to date. Am meeting with him again tomorrow.

[Unsullied_Spy]

Sounds good! Any chance of getting a LST, Muggy, or Aftershock diff in a Savage? They are fairly compact, VERY tough, and you can get them off eBay very cheap.

[plaviblue]

Originally Posted by Unsullied_Spy

Sounds good! Any chance of getting a LST, Muggy, or Aftershock diff in a Savage? They are fairly compact, VERY tough, and you can get them off eBay very cheap.

don't know, never researched those, do you have any links or pics? Those are all Losi products, right?

[plaviblue]

Actualy, just found a pic of them and they look like the same spider gears as the HPI ones.