I'd be in for one.

 

Count is up to 4.

Just for information: A friend of mine in Belgium will get 30 of these, not from Wavetrac but a company who uses similar system for zero load condition. In January I'll get the technical details.Stay tuned.

 

OSG, if using their diff oil, have no jerkiness or odd noises. My OSG has no odd behaviour or noises in parking lots, around town, mountains, or track. Its engagment is smooth and intuative, it just operates in the background. I find it odd you think an OSG wouldn't be great in the mountains, fast driving is where it really shines. You have more stability and consistent behaviour under braking and lifting off throttle

 

Thanks for your Feedback.
You might didn't read this correctly. I said, I got told that. I don't have the experience. But personally from 1 of my older cars, I want Torsen Differential. I don't have anything against clutch type differentials. I just don't want one. That's it.

 

Alright guys,
https://www.mfactoryeurope.com/produ...-f22c?hl=de-DE
This company has the Torsen Differential with Zero load avoidance available. If you were looking for one. Including Upgrade (Stage 1 Race Pack) for Zero load Elimination.
Have a great day.

 

Three of my four vehicles have Torsen differentials (one Quaife), so this is a fascinating topic to me.
AM General came up with another clever solution for their 4WD with Torsen front and rear.

In earlier generation vehicles, drivers learned to apply the brakes lightly whenever a wheel was in the air, and I learned to instinctively do this when off-roading. The technique is called BTM, for Brake-Throttle Modulation. You basically keep your foot on the throttle, but also modulate just enough brake to resist wheel spin, and then the Torsen gears engage to send power to the wheels on the ground. The obvious drawback is that the brake pedal engages all wheels, even though you only have one or maybe two wheels in the air that need it.

The next generation took advantage of ABS technology to monitor the wheels for spin, and any wheels which rotate faster than the others have the brakes applied selectively. The same result is achieved: the Torsen engages once the spinning wheel sees some resistance, but the advantage is that wheels with traction are not braked at all, and the system probably reacts faster than the driver can (and it would be impossible to apply the brake to an individual wheel manually). AM General called this technology TorqTrak. I'm not sure that I spelled that right, because I can't find anything online except for unrelated products.

I'm wondering if such a system as TorqTrak could be developed for other vehicles besides 4WD, and whether it would be as successful in high-speed race track use as it proved to be with slower-speed off-road use. It would be a challenge, because the system would not be entirely contained within the differential, but would also require serious modifications to the ABS system and computer.

I'm no mechanical engineer, but two things seem obvious. First, this Wave does seem like it could help, compared to the original geared differential like the Torsen, but adding some resistance when the wheel and tire see no resistance from the road (because they're in the air). Second, although it helps, I still imagine that the this design would still spin a wheel that stays in the air. As their representative says, their diff never fully locks. That tells me wheel spin is still possible, even if it's beyond the point where a Torsen would spin.

Perhaps it turns out to be similar to TorqTrak, where the ABS system pulses the brakes to stop or reduce spin, and at least deliver power some of the time to the wheel with more traction. The Wave probably also pulses as the two components first ride up the Wave, and then ride down the other side of the Wave. Seems like after every increase in bias, there would be a decrease in bias, until the next Wave rotates into place.

It might not be a big deal. At high speeds, both wheels are turning rather quickly, but the differential doesn't see much action when both wheels are rotating at the same speed. Going around a normal corner, the outside wheel does turn faster, but not really that much faster than the inside wheel. Does anyone know the maximum ratio? It seems that with the relatively similar rotation speeds, the Wave would only be dealing with a slow mismatch between axle speeds.

My question is how much noise this makes. Have any customers of The Wavetrac recorded the sound of the Wave, or reported on how noisy it might be?

Passengers in my S2000 often hear the Torsen and ask "what's that sound." I imagine The Wavetrac will have a sound of its own.

 

What is the bias ratio for this MFactory Helical LSD Differential?
The Wavetrac seems to be 2.5:1 ... is the MFactory as high as 3:1 ?

 

What I found:
Standard MFactory Helical: has a Bias Ratio of about 2.7:1 to 3.0:1.​MFactory with Race Pack (Stage 1/2): due to Preload, effective Bias Ratio gets stabilized. MFactory Ratio is about 3.0:1.

 

Yeah, german cars been doing this for decades now. Both for center torsen diff and rear torsen diff. Combination of braking one or several wheels to direct power to wheel(s) they want to get power. Either bc wheels airborne or to create or reduce power induced yaw, etc.

They aren't the only ones doing it. But I know they've been doing a long time now.