Wavetrac

[Ive]

stevieturbo said:

I have a Wavetrac, and I can assure you 100% one wheel can and will spin if it goes too light.

They claim their discs in the middle that offer some pre-load can help prevent this....but they absolutely do not. With any Torsen, it needs resistance to work, so if one wheel gets light enough...you lose all traction. The little friction discs in the middle of the unit are supposed to offer that resistance in the absence of friction from the tyre giving it.
It may help a little....but it really is only a little if at all.

I had a regular Torsen before that, and I really cannot tell any difference, and have many datalogs showing the single wheel spinning like feck.

And even under hard braking where one might go light, again there are occasions where 1 wheel can easily lock up.

At the time I needed a new diff anyway, and had high hopes for the Wavetrac....they lasted until the first hillclimb. At least for my 8.8 nobody really seems to make a proper LSD for them though that would offer any strength.
At least the Wavetrac is a nice sturdy looking piece.

I have a wavetrac diff in my K20a2 powered Elise.
In fall, I had a driveshaft popping out just enough to disengage the spline. I lost ALL drive power. Neither at 149mph (Autobahn) when it happend nor on the parking lot i rolled into I had any traction. At the time I thought the input shaft of the gearbox had broken. There was not even a hint of a movemement. I could put it in gear at 2000 rpm without the clutch and handbrake off and absoluteley nothing happend.
Likely a combination of a old CV joint used for the conversion and a reused ring clip.
I‘ll blame the builder. Me.
Oil is Honda MTFIII, the OEM oil wavetrac recommmends.

At least fo my unit, the locking action at zero load on one wheel does not work.
Wavetrac told me the car needs to roll. But this is BS. The mechanism is supposed to sense speed differences of the drive shats for doing its special and unique thing. Now both at 149mph, I was logging data to map for e85, and on the parking lot, the diff casing in the tranny and one output spline were turning very fast and while cruising to halt not even at the same rotational speed, no load was transfered.

Here is a chap with a viper:
https://youtu.be/jyjjJSIjKqg
https://www.viperclub.org/vca/threads/wavetracs-di...

Mine does exactly the same.

Compared to the Torsen Typ B diff I had in the supercharged Rover, you don‘t get that tiny delay and nonlinear engangment once traction starts to get lost.

In my car it works as a decent torsen diff, but nothing more.

[stevieturbo]

There needs to be load applied, in order that power can transfer...and therein lies the problem. Lose enough grip and there is no longer any load.

Their internal friction discs are supposed to offer some load so this transfer can occur, but clearly the friction arrangements are nowhere near strong enough.

Their idea is a good one, but the reality is it simply does not work as claimed. But their diffs as a Torsen unit are fine, and the build quality etc is good.