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SC10 slipper slipping?

SC10 slipper slipping?

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Old 01-29-2011, 11:01 PM
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Default SC10 slipper slipping?

I just built a FT SC10 and ran it on the track for the first time today.

Runs great but later in my run it started slipping real bad, didnt even want to spin tires taking off, and at the start it did so with ease...

I though the slipper needed tighting so i did so...

Same thing, starts off great but at the end it starts slipping real bad....

Im new to electric and m not sure where to look, any ideas?
Thanks for your help.
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Old 01-29-2011, 11:28 PM
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Originally Posted by harris414 View Post
I just built a FT SC10 and ran it on the track for the first time today.

Runs great but later in my run it started slipping real bad, didnt even want to spin tires taking off, and at the start it did so with ease...

I though the slipper needed tighting so i did so...

Same thing, starts off great but at the end it starts slipping real bad....

Im new to electric and m not sure where to look, any ideas?
Thanks for your help.
slipper pads do wear out.. but.. make sure its not the diff.. (the FT SC10 comes with a ball diff right?)

what motor you running? i have had an LRP x12 rotor come apart once.. drove me crazy till i pulled the can apart
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Old 01-29-2011, 11:38 PM
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the FT SC10 doesn come with a ball diff. It sounds like the diff came loose. You just will need to readjust it. Then adjust your slipper accordingly.
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Old 01-30-2011, 09:00 AM
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It does have a ball diff.
Took it down and all was fine.
The pads and plates look good but i put new ones and scuffed the plates.
Pulled the motor and it was fine also. (tekin 17.5bl)

I noticed that it slips on the track only at the 15+min mark of batt. If I
hold off the ground it ballons the tires easy and seems fine.
That would tell me diff, I would think but It checked ok...lol

Anyways, I rebuilt diff. and adjusted everything to spec. and will see what happens today. I'll let you know
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Old 01-30-2011, 11:18 AM
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Does it have to be retightened after a run or does it stop slipping if you let it cool off? If its the first situation replace the nut, if it's more like the second tighten up the slipper a little more. You shouldn't have trouble with a 17.5.

How far does it slip from a standing stop?
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Old 01-30-2011, 11:55 AM
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After I let it sit/cool off for a little its fine for a little again.
Its slipping 5-10 feet from a stop.
Im about to go test it after rebuilding diff and new pads in next 20min
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Old 01-30-2011, 06:57 PM
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well not sure what did it but everything seems fine...
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Old 01-30-2011, 07:06 PM
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maybe time to change the slipper pads or the slipper is too loose
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Old 01-30-2011, 09:21 PM
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Sounds like you have the slipper set pretty loose. If it is fine and then slips like crazy and needs to cool off before it works again it is most likely way too loose. You may be getting the pads to the melting point or something. Make sure they dont look burnt or really really shiney (glazed). I usually run mine on the tight side so it MIGHT slip for like a foot. I have learned to use it to keep gears from stripping on hard landings and such and have adjusted my driving around it. If im on a high grip surface i adjust it so the front wheels barely come off the ground when i push it backwards and punch it. If you hear it slipping while you are trying to clear jumps, especially in a tight technical section, it is too loose in my opinion.

Also I may have suspected a ball diff but any time i have noticed major slip from those it usually "crunches" on acceleration... It is time for a rebuild when that happens. Depending on what i want out of it i usually adjust it to full in then back out anywhere from 1/8-3/8 turn. Anything past a half turn out will probly wear it out pretty quick.

Hope this sheds some light and good luck with it
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Old 01-31-2011, 06:33 AM
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The book says to run nut .5mm in from the end of shaft, I started at 1mm and then added 2 more turns when on the track trying to get to stop and still slipped.

I guess maybe it was the pads but they sure look ok to me but when i put new ones and rebuilt diff all seems fine now.

the local track i test on is hard with ball bearings on top. Its been hard trying to decide where to set slipper.

Thanks for the help guys
I guess i will just tighten the slipper down some and adjust driving an see how it goes...
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Old 01-31-2011, 07:10 AM
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Check slipper pads for glazing, lightly sand if needed. Check to ensure ball diff is installed correctly vs possibly backwards causing diff screw to back off. Lastly I'd recommend rebuilding the diff and reinstall.
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Old 01-17-2013, 08:38 AM
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Can anyone describe the different sounds of a ball diff that is slipping vs. a slipper that is slipping? I just built a new SC10FT and I "think" the slipper is the noise I am hearing but even as tight as the slipper will go, I cannot get the sounds to stop or the wheels to lift while holding the back tires and shots of throttle.

The pads are not glazzed over as I just took them out and scrapped them down a bit. After reading this thread, I'm thinking maybe it's the diff slipping. On the track I also get slipping noise for about 5 feet.
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Old 01-17-2013, 08:59 AM
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Originally Posted by schlage View Post
Can anyone describe the different sounds of a ball diff that is slipping vs. a slipper that is slipping? I just built a new SC10FT and I "think" the slipper is the noise I am hearing but even as tight as the slipper will go, I cannot get the sounds to stop or the wheels to lift while holding the back tires and shots of throttle.

The pads are not glazzed over as I just took them out and scrapped them down a bit. After reading this thread, I'm thinking maybe it's the diff slipping. On the track I also get slipping noise for about 5 feet.
The two sound VERY different. I haven't checked in a long time, but I'm pretty sure the sticky on top (how to properly build and break in a ball diff . . .) has videos where he demonstrates the different sounds.

The slipper is high pitched, relatively quiet . . . sounds like a squeaky little mouse. The slipping ball diff is loud and sounds like a barking seal. Trust me, when you hear your diff slip up close and in person, you will know. But check out those videos in the sticky.

I'm not sure the criteria about the wheels coming up are good for SC. I think people typically set it on the track, but listening for the slipper as the go wide open on the throttle. I think the general idea is about 1-3 feet of slip.
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Old 01-17-2013, 01:02 PM
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Try a VTS slipper on the SC10. It gives more surface area and spreads the heat out more. make sure your slipper nut is not backing off. The nylon inside the nut can go bad if exposed to a lot of heat.
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Old 01-17-2013, 01:08 PM
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Slipper makes a sqeuak, Diff makes a bark.
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