Victor A

Good point .
Victor

Rick Hohwart

This is true. Delta even had a gear diff for their 1/12 car back in the '80s. When the car was right, the gear diff was better, but any wheel lifting ruined you.

But I think the fluid diff may be something to look into simply for its ease of use and repeatibility. And as new battery and motor technology makes its way into electric racing, the extra weight may be a non-issue.

sosidge

Modified touring now has too much power and too much grip for a ball diff.

It is good to see Serpent stepping up and releasing this "old-tech" part which I am sure will outperform a ball diff and be a lot easier to work with too.

I'd like to see more.

Jon Kerr

iTrader: (17)

This is a very interesting idea. I really like having gear diffs in my 1/8 scale for all the reasons being mentioned. It'd be nice to have that in a TC. TC's are so sensitive to diff condition. If you have a diff get chunky in the middle of a run, you can feel the car go away. That wouldn't be an issue with this. Also, like Rick said, 5 grams in the drive train is nothing when you're running mod. You'd probably gain more time on the track with the consistency than you'd loose in the weight. Hell, we used to add weight to the diffs/spools on the old Losi XXXS by running steel out drives to increase grip.

Ffejdat

iTrader: (5)

According to the Serpent website, the gear diffs are 5 grams heavier than the ball diff, it does not say if this is with fluid or not.....

Skiddins

Nope, this is a TorSen , or something like the latter (Quaife ATB Helical LSD) ;

Turbo Joe

iTrader: (41)

The one on the left is a standard clutch-style LSD, the one on the right is a Torsen-style diff.

UK.hardcore

***edit*** Didnt notice the last few posts so this is a little late.

No, this is:



Hpi has gear diffs that are adjustable by a tiny spring.

The spring was inbetween the smallest gears pushing them against the housing, causing friction.

Skiddins

No, the upper one is a clutch type (you can see the black material), the lower left if torsen, the lower right is a Quaife LSD, it's mechanical and 'similar' to a Torsen.

But either way, if any other type of diff appeared for my car I would be willing to try it.

Skiddins

UK.hardcore

Ever seen these diff's, www.bbfmodels.com

Turbo Joe

iTrader: (41)

Ummm...no.

A Torsen-style diff uses worm gear principles (you can drive through one gear of a worn gear set, but not the other) to make a continuously torque-biasing (not locking) axle. They don't use the clutches that you can clearly see in that picture.



Also, Torsens don't have side gears...

UN4RACING

iTrader: (22)

Save a lot on diff rebuilds and can handle the torque of a brushless.

Mod racers dream.

And even in stock the rotating mass is better for cornering, its all about keeping the car rolling.
I hope that some ones gets this going. Is any one selling this in a kit or just as a hop up.?

razzor

For sure and exactly what i was thinking.
Im actually checking out 200mm diffs to see if i can make a conversion.

Skiddins

Whoops, that was a 'Locking' diff , got my pictures confused


But I still want one for my car

Turbo Joe

iTrader: (41)

DOH!

That's cool...