What is a Slipperential?

[JERRY2KONE]

There is also the factor of human error to be considered. Trying to hit your groove and make your marks exactly the same on every single lap of a race is extremely difficult to do by any standards due to the human factor. We are not like machines, and yes we do make mistakes. Even the slightest mistake can cost you time on the track. Having this mechanical slipper/clutch where there was none before will take that level of error out of your hands once you get the slipper setup correctly for the surface that you are running on. THis will improve your lap times if you use it correctly. That was also a great point about the shock factor to your drivetrain on landings Mike. That in istself is a huge plus to having one of these installed.

Originally Posted by RC-Monster Mike

Well, there is no substitute for a smooth trigger finger, but a smooth trigger finger is also no substitute for a slipper. When you land a big jump on all 4 wheels, for example - the shock is transmitted through the entire drive train(even if your "smoothly" picking your nose with the trigger finger). The slipper will absorb this shock. When accelerating through a particularly rough area, there is also considerable shock. Once the shock force exceeds the slipper tension, some slippage will occur and absorb this shock - again, the trigger position has nothing to do with it.
Regarding traction control - well, you can't "feel" the track from the driver's stand, so your smooth trigger action, while helpful, is also somewhat reactive(and hopefully proactive on the 2nd lap). And unless your have motor skills equivilent to Rainman's math skills, you won't be exactly the same every time, either. The slipper setting will be consistant. On a slippery track, you can dial in slip and make it much easier to control traction. On a firm track, a stiffer setting will be transparent(won't know its there), but hard landings or other high shock loads will be absorbed by the slipper.

So yes - it can limit power transfer to the wheels like you mentioned - in fact that is the whole point. It limits "power" or "shock" both ways(from the truck to the track or from the track to the truck). :)

will it work with a Losi 8T?

The HandyRacing crew made the trek to the iHobby Expo in Chicago two weeks ago, and we were very lucky to find Monster Mike himself manning the booth at the show. Mike is really "the MAN" - he even let us film an on-the-spot no practice or planning interview to tell us and our viewers about the Slipperential.

THANKS MUCH, Mike!

[YOUTUBE]http://www.youtube.com/watch?v=WUf4gU8fevU[/YOUTUBE]

Hmmm, I dunno how to make the YouTube block quote work I guess.
The vid is here: http://www.youtube.com/watch?v=WUf4gU8fevU

[jamesban]

If your gearing, batteries and motor are correct for your vehicle can having the slipperential too loose and slipping too much cause the battery wires to overheat and melt a little?

[Mozzy]

Originally Posted by jamesban

If your gearing, batteries and motor are correct for your vehicle can having the slipperential too loose and slipping too much cause the battery wires to overheat and melt a little?

Definitely not!

The only thing that will overheat in that case is the actual slipper on the slipperential.
Slippers should slip then grip. If it slips too much, it will heat up rapidly & cause the slipper to fail & require replacement.

I don't believe your set up is correct.

Wire heat generally indicates that there is too much load on the motor & it's drawing a lot of amps.
Keep that going & you could potentially have a massive failure of both motor & ESC.

What motor are you running with, what gearing & in what car?

Also, are you running on grass that is half the height of your wheels? My mate did this with his MT & fried a motor & MM ESC. Initially we thought the motor wires had just gotten hot & melted the solder enough to separate, but, after fixing that & trying to run again we discovered everything was shot.

[jamesban]

my setup is a 40 x 82 mm 2000kv motor, 4 cell A123 batteries and 14T pinion in a Muggy.

How about a Matrix TR?

[slimthelineman]

sweet! wish i could use one this weekend, theres a race at hotrods on dry track all day saturday. this thing would be grrrreat! last time i was there i snapped an outdrive in half on thr rear diff. was the only car to break in an all nitro race! wow

Hmm payday is monday do i need a slipperential?????

[Finnster]

? from other thread:

Question tho. Are all the replacement parts custom to RCM? Obviously the spur and case and all, but what about the internal gears, slipper pads and other misc things? I know at one point Mike said he wanted avoid using OEMs for parts as they may discontinue parts at any time.

What is the price? Missed that too, tho we'll see it soon enough.

[Arct1k]

IIRC $129.99 was the target price...

I have ever confidence that mike will make spares available...

[Finnster]

Originally Posted by Arct1k

IIRC $129.99 was the target price...

I have ever confidence that mike will make spares available...

I'm sure he will, and I sincerly hope its a good revenue stream for RCM. Mike deserves it. I'm just wondering how much ended up being custom.

[Semi Pro]

bye bye center torsion diff, hello slipperential

[Mozzy]

I don't see an answer to the question of what truggies will this fit & what won't it fit?

Is it limited by the vehicles overall mass?

Does it lock the centre under extreme accelleration like a tractive IV or torsen to push the power to the wheels with grip?

[BP-Revo]

Right now it is unknown of what truggies it will fit and it won't fit.

Once it comes out, between all the users who buy it, I'm sure there will be a running list made of what it will easily drop into without mods, drop in with minor mods, or take a fair bit of mods to install.

Also, the differential is a normal differential, no torsen type activity involved.

It simply acts like a regular, fluid-filled differential that has a slipper clutch between it and the spur gear to absorb drivetrain shock just like the slipper clutches found on the transmissions of many monster trucks (Revo, E-Revo, T/E-Maxx, etc.).