Strange S-Trac
Strange S-Trac 
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lawrenq (02-20-2020)
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10-30-2011, 09:18 AM
#8
What's the difference between a detroit locker and the s-trac for the S60 rear? My car is a dd with drag race duty most weekends and I have a 383 with nitrous and a t56, currently the car has a true trac but I want to go to a locker but this wavetrac option sounds promising.
10-30-2011, 06:11 PM
#9
What's the difference between a detroit locker and the s-trac for the S60 rear? My car is a dd with drag race duty most weekends and I have a 383 with nitrous and a t56, currently the car has a true trac but I want to go to a locker but this wavetrac option sounds promising.
Best way to separate them is through comfort of using. The Detroit locker is a very harsh operating differential especially in a M6 car the way it locks and releases as were the Strange S-Trac feels very much like a stock posi unit feels.
I hope this helps some.
11-11-2011, 03:47 PM
#13
So to answer your question you will not be getting as strong of a version of the S-trac in their S-60 as you would in a nine inch version. There was some confusion while they were manufacturing the nine inch version and they actually just set the record straight letting us know the differences between the nine inch version and the S-60 version. The S-60 version is still comparable to a Truetrac.
11-12-2011, 10:43 AM
#14
The S-trac, Wavetrac, and Truetrac diffs are all helical gear design, preloaded but non-locking diff units. They all function the same internally, but are completely different from a Detroit Locker, and are very smooth operating similar to a stock posi unit.
A locker is locked up like a spool until the forces of different rear wheel speeds causes the unit to lock/unlock rapidly. This lock/unlock function is what makes the popping noise and is the cause of the unwanted driveability symptoms, especially with the M6 trans.
The difference between the S-Trac/Wavetrac and Truetrac is the type of material the units are actually constructed from, the warranty, and spline count. The S-Trac is available in 35 spline, the Wavetrac is available in either 31 or 35. Axle spline count does not cost any different so why not just get the stronger 35? The S-Trac and Wavetrac come with limited lifetime warranty, the Truetrac does not. If you break one Truetrac, the cost of replacement plus the cost of the original broken unit will exceed the initial cost of the S-Trac or Wavetrac.
We have sold countless units of all of these diffs and the best policy is to get the customer the right diff for the application. This comes from spending alot of time with our customers on the phone and we drive/race the products we sell. We offer just about any diff unit out there with our 9" center sections. Spool, Billet clutch type posi, Truetrac, Detroit Locker, Wavetrac, and the S-Trac. If you choose to buy a Moser 9" rearend from us, then we can get any diff unit in it, including the S-Trac. Nothing better than real world experience... saves you money in the end.
Last edited by ssvert99; 11-12-2011 at 10:51 AM.
04-30-2013, 04:34 PM
#15
The difference between the S-Trac/Wavetrac and Truetrac is the type of material the units are actually constructed from, the warranty, and spline count. The S-Trac is available in 35 spline, the Wavetrac is available in either 31 or 35. Axle spline count does not cost any different so why not just get the stronger 35? The S-Trac and Wavetrac come with limited lifetime warranty, the Truetrac does not.
So if you can get them both in the stronger 35 spline there really isn't any difference between the s-trac & Wavetrac? I called today and whoever was helping me didn't know the difference between the two......I got a kick out of that one.
I had more questions but he had to go for whatever reason, took my number and never called me back. Who can I ask for next time that can give me a little more information?
04-30-2013, 06:56 PM
#16
Sorry about the lack of instant info on the phone... We are still in the middle of moving into our new facility and I am not available all the time. The guy answering the phone is pretty good, and busy to say the least, but not quite up to speed with all the fine details of all the differences of the 1000s of parts we deal with yet.
There are minor internal differences between the two units, but for the most part it is a very similar unit. Same type of helical gear design(as is a Truetrac) is incorporated with both, and are made with premium materials. A lifetime warranty rounds out the big picture and is obviously part of the cost. I have had my hands on all of them, including the units from Strange that never made it to the public. Both the S-Trac and the Wavetrac are great units and are by far the wisest choice for the higher powered street cars. The S-Trac is a bit lighter than the Wavetrac.
There are minor internal differences between the two units, but for the most part it is a very similar unit. Same type of helical gear design(as is a Truetrac) is incorporated with both, and are made with premium materials. A lifetime warranty rounds out the big picture and is obviously part of the cost. I have had my hands on all of them, including the units from Strange that never made it to the public. Both the S-Trac and the Wavetrac are great units and are by far the wisest choice for the higher powered street cars. The S-Trac is a bit lighter than the Wavetrac.
05-01-2013, 03:51 PM
#18
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Sorry about the lack of instant info on the phone... We are still in the middle of moving into our new facility and I am not available all the time. The guy answering the phone is pretty good, and busy to say the least, but not quite up to speed with all the fine details of all the differences of the 1000s of parts we deal with yet.
There are minor internal differences between the two units, but for the most part it is a very similar unit. Same type of helical gear design(as is a Truetrac) is incorporated with both, and are made with premium materials. A lifetime warranty rounds out the big picture and is obviously part of the cost. I have had my hands on all of them, including the units from Strange that never made it to the public. Both the S-Trac and the Wavetrac are great units and are by far the wisest choice for the higher powered street cars. The S-Trac is a bit lighter than the Wavetrac.
There are minor internal differences between the two units, but for the most part it is a very similar unit. Same type of helical gear design(as is a Truetrac) is incorporated with both, and are made with premium materials. A lifetime warranty rounds out the big picture and is obviously part of the cost. I have had my hands on all of them, including the units from Strange that never made it to the public. Both the S-Trac and the Wavetrac are great units and are by far the wisest choice for the higher powered street cars. The S-Trac is a bit lighter than the Wavetrac.
Is the S-Trac MUCH more of a drag race/60' oriented diff (as far as bias/corner exit locking goes) than the Wavetrac (which as I understand it is a more handling/turning oriented diff)???
Or are they equals in this respect (handling/cornering), with the S-Trac just being stronger overall?
05-03-2013, 11:09 AM
#19
I haven't had any negative feedback from the customers we have that are using the S-Trac for handling/cornering use, so I consider no news good news. Both units are aggressively preloaded so the unloaded tire during cornering should still get power.
I wouldn't really call the S-Trac "stronger overall"... That is probably a matter of opinion there. They are both very durable units and have proven themselves. Can they be broken... sure. You get to a certain point with items and at some point you simply have to accept using a spool.
I wouldn't really call the S-Trac "stronger overall"... That is probably a matter of opinion there. They are both very durable units and have proven themselves. Can they be broken... sure. You get to a certain point with items and at some point you simply have to accept using a spool.
05-03-2013, 03:09 PM
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I haven't had any negative feedback from the customers we have that are using the S-Trac for handling/cornering use, so I consider no news good news. Both units are aggressively preloaded so the unloaded tire during cornering should still get power.
I wouldn't really call the S-Trac "stronger overall"... That is probably a matter of opinion there. They are both very durable units and have proven themselves. Can they be broken... sure. You get to a certain point with items and at some point you simply have to accept using a spool.
I wouldn't really call the S-Trac "stronger overall"... That is probably a matter of opinion there. They are both very durable units and have proven themselves. Can they be broken... sure. You get to a certain point with items and at some point you simply have to accept using a spool.
