What is a Slipperential?

[brushlessboy16]

Originally Posted by BrianG

Yes, Unsullied_Spy is correct; the ratio listed on my site is indeed the version in the pic above. The current slipperential is threated like any other center diff.

Beat him to it

[spiftacu1ar]

I have a question about heat. I read part of the thread, where someone mentioned that the temps stayed relatively low (116 F) after a full run. In the item description in the store, it mentions fins (or something of the sort) to help increase airflow to keep it cooled. Does this mean that if I have the diff in a sealed enclosure (i.e a sealed gearbox) it might overheat? Is there any way to prevent this. I am going to use this diff in my savage conversion, which I often also bash with, so I don't want rocks and other debris to damage the gears.

EDIT: Also, does it come stock with the 46t, 48t, or 50t spur.

I have a question about heat. I read part of the thread, where someone mentioned that the temps stayed relatively low (116 F) after a full run. In the item description in the store, it mentions fins (or something of the sort) to help increase airflow to keep it cooled

having fins on a motor gives it more surface area and this helps with heat transfer

[spiftacu1ar]

lol, not talking about the motor. I am talking about the slipperential. (temps rise becasue of the slipping/energy lost because of friction is dissipated as heat)

[bcltoys]

Maybe i missed this but is it a drop in fit for a 8T 1.0 OR 2.0.

[RC-Monster Mike]

With the Losi conversion, the Slipperential requires about 1mm of shimming under the motor and diff bulks to allow the 46mm spur and adjustment nut to clear. It is a drop-in fit with our Losi motor mount. No other modifications are required. :)

for the XRAY XB8EC, Can we reuse the centre mount bearings? Thanks. Mine is on the way now! w00t!

[bcltoys]

Forgot to say that i have the tekno v3 conversion do i still need to shim that set-up or just get your mount to be able to drop right in.

[RC-Monster Mike]

Yes, you can re-use your xb8 bearings - should be a drop in fit in this car as well.
When using my mount on a Losi, there are no mods needed. This should apply to the Tekno chassis as well. At the most, a small amount fo shimming would be needed under the cd bulks for nut/thrust bearing clearance.
If using mechanical brakes with a Losi(or any other car), both brake levers must be located above the center diff top plate, as the slipper occupies the space "over the diff cup" where some brake levers often go(some cars have both on top anyway, like AE - others have one above and one below the cd top plate).

[RBMike]

Hey Mike, got a chance to start playing with the slipperential this weekend and I have to say I was impressed. What kind of temps should I be seeing on this thing?

[RC-Monster Mike]

Temps will vary with various factors. High slip settings will obviously generate more heat(and the heavier the vehicle, the higher the heat potential as well). It should keep itself fairly cool with any usable amount of slip - I don't think temps will ever really be an issue(it does cool itself in use with the small fins built onto the slipper-side cap). If it slips so much that forward motion is an issue, I would expect higher temps, but this scenario wouldn't make sense in practice. Have you temp'd it after a run?

[RBMike]

Yes on a medium too slightly loose surface, medim/large track that is fairly high speed. I ran a few times making adjustments until I liked the feel. After a 10 minute run I measured 110 too 125 deg F on the outside metal parts of the diff. The air temp was in the mid to high 70's.

[RC-Monster Mike]

Perfectly normal and acceptable temps. The center diff in my Losi truggy would routinely be 150-165 after a run......without a slipperential - the heat was generated mostly by the drive shafts rubbing inside the drive cups(front was always very hot due to the angle). The Slipperential cools itself pretty well - unless your slipping it halfway around the track, temps should not become an issue at all( and if you have to slip the slipper halfway around the track, you are probably running too much power to begin with). :)

[RBMike]

OK thanks that what I was thinking (never temped a stock diff). Just wanted to know if it was normal. Great engineering effort on this thing, works very well.

[RC-Monster Mike]

Glad you like it! :)