Wow losi diffs use traction ramps? I think this is losi's secret tech exposed...they should be worth much more...
For anyone who wants to know the actual difference: fioroni tractive is a clutch type torque sensing diff that uses special traction ramps (a heap of different ramp angles are available for different tuning) which activate a kind of clutch between the spider gears and the drive shaft (the internal gears rest on an angled cutout, so as the diff unloads the pinions climb the ramps and locks the diff more and more)
The ofna style torsen diffs are geared torque sensing diffs, which use a weird worm gear drive setup. The disadvatage is that both driveshafts need to be loaded for it to work properly - if one wheel lifts the diff just unloads.
An advantage of uing torque sensing diffs over speed sensing (ie the viscous diff we're all used to) is that there is n to no power loss in a torsen diff (unlike a viscous), and they last a lot longer.
Quote:
Originally Posted by brushlessboy16
power goes to the wheels with the most traction... that just spells wheelies.. not so good on the track when you are trying to get from point a to point b as fast as possible.
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That is not right. Torsen diffs 'sense' when there is a torque load on an axle and increase the coupling of the driveshafts to keep a certain maximum torque difference between the wheels, you still get the inside wheel spinning at higher rpm.. If you bind one wheel of a viscous diff and go wot, your other wheel will spin fast. With torsen I think this (potentially, depending on the setup) is impossible, it will lock once the difference is big enough (its all relative to the torque on the axles, which i think will only let the ratio of loaded and unloaded wheel rpm be so much). I think torsen diffs often only are limited slip under throttle, and open off throttle - something you cant acheive with a viscous diff.
Ryu James: Perhaps you didnt reassmble them properly after taking them apart before using them?
Here is the exploded view of the Tractive diff: you can see it is very different to a standard diff
http://www.twf8.ws/new/tech/options/...e_IV_mugen.pdf
edit: just d/l the losi 8ight manual to look at its diff. They are the normal sealed oil kind.