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Old 07-18-2012 | 09:58 AM
  #26746  
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Sounds like one of your top shaft spacer isn't seated right, inside the gear box. Part # 91017. Page 12 of the FT manual.
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Old 07-18-2012 | 10:02 AM
  #26747  
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hmm, why would that be the cause. If that were it , the shaft would bind no? the spacer sits between the bearing and the gear. If it were missing that would be an issue. But I would think with case would fully seat the spacer once assembled, or it would bind or cause the case to not seal correctly for sure.


I dont have the truck in front of me, but "if" he did indeed install everything correctly, I would still put the old top shaft in, reassemble making sure it is 100% correct and see if the issue persists. You could also compare the shafts side by side to make sure they are identical.
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Old 07-18-2012 | 10:33 AM
  #26748  
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Originally Posted by janga
Sorry i could not post before

I have already tried putting them in under the sun gear but it means the pin holding them in doesnt go in properly
Make sure you first remove the smaller .2 shim use on the out drive shaft before inserting into diff case .
Then use the 2 of the .2 shims under sun gear only ....


Pin should fit just fine , but also check to make sure the out drive O-ring is seated.
If not, can make pushing the pin though more difficult...
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Old 07-18-2012 | 12:20 PM
  #26749  
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Originally Posted by Wildcat1971
Also, does anyone know what the optional top shaft does different? Not the lightened one.
91016 - standard top shaft
91131 - lightweight top shaft
91180 - updated top shaft has an extra flat for use with 91188 coupled slipper hub (pinned top shaft)
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Old 07-18-2012 | 12:25 PM
  #26750  
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Ah, I figured it was something like that. I forgot that AE made the coupled inside hub. It makes sense a new shaft would need to be made. Does anyone really even run the coupled config? Also, is the exotek inside hub coupled or decoupled? I would assume decoupled, just no slip front end.
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Old 07-18-2012 | 01:11 PM
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Originally Posted by Wildcat1971
Snaf,
I was reshimming my front diff last night and was thinking of you. lol. When I work on the drive line, I check for binding every step of the way. I think you said the rear is binding. I checked my front and it was free rolling. But I remembered something while I was checking it. The tranny screws should have a washer on them to limit how far they go in. If they go too far they will rub on the pulley or other near by moving parts. I will be taking off my rear pulley when I install my exotek clutch locker and I will see if mine was like yours. In the general case, when ever you build a car, always check every moving part for smoothness all the way through the build. Hinge pins, shocks, tranny and etc. This is why I hate buying used cars. I have no idea what yahoo stuff the previous owner did to the car. I always end up tearing the used car down and fixing everything they did wrong. Anyway, check to make sure the tranny screws dont extrend past flush on the motor plate.
I thought of the tranny screws first thing. I remember from the early days of this thread of the issue where the screws being over-tightened caused binding. I tighten mine, then back it off a 1/4 turn. I even backed off a full turn just to be sure. Unfortunately, that's the not issue. I haven't had a chance to check that pulley, though. Tonight.
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Old 07-18-2012 | 01:16 PM
  #26752  
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I will hopefully be working on mine tonight also. Since my exotec hub is in. Going to reshim and do a diff tear down...ugggggggg. I will check my freeness once i get my rear pulley off.
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Old 07-18-2012 | 02:02 PM
  #26753  
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anyone going to the sc nats at rcmadness in Connecticut in early August ?
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Old 07-18-2012 | 02:14 PM
  #26754  
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lol, I have a half serious question. Where does the diff lube go? I put 30k lube in my front diffs 7 months ago. I read to fill half way, but i filled 3/4 full , let it rest and put it back to 3/4 full. This week I go to change the diff oil and it seems like 20% of the lube went away. It is not in my tranny case, no lube residue anywhere outside the diff. I am assuming it just settled into all the nooks and crannies of the diff. That being said, should you let the heavier diff oil settle into place a long time before closing it up?
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Old 07-18-2012 | 02:37 PM
  #26755  
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Originally Posted by BorackBasher
i have like 4-5 threads showing... with the but off.. with the motor backed off.. i gave it a good push and it went about 10 feet.. everything is freely moving and smooth.. super quite last time i drove it with all the old hardware on.. all i wanted to do was change the top shaft out.. and this is my problem now.. ive been working on the truck for over a year now and im in a bind.. this is so weird!
Check your top shaft, my sons brand new out of the box was bad. You couldn't spin the gear on the shaft with your fingers but under power it would spin.
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Old 07-18-2012 | 04:02 PM
  #26756  
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Glad to report I have sold my train wreck of an experience sc104x4
Compared to my other truck losi scte it was rubbish
I did all the usual associated upgrade kit just couldn't get the truck to point straight on our outdoor track was nervous under powet and nervous off power!

Hell I even wasted $50 on the rcshokz centre diff ( very minimal difference)

Bye bye sc10 glad your gone!
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Old 07-18-2012 | 04:22 PM
  #26757  
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Originally Posted by muzzytt
Glad to report I have sold my train wreck of an experience sc104x4
Compared to my other truck losi scte it was rubbish
I did all the usual associated upgrade kit just couldn't get the truck to point straight on our outdoor track was nervous under powet and nervous off power!

Hell I even wasted $50 on the rcshokz centre diff ( very minimal difference)

Bye bye sc10 glad your gone!
We have been anxiously awaiting your report. Thanks for posting.
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Old 07-18-2012 | 04:25 PM
  #26758  
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lol, I should find a losi at the track and drive one see if it is all that.
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Old 07-18-2012 | 04:32 PM
  #26759  
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i actually love my ft sc10 4x4. got the center diff and exotek chassis. it's a rocket. i'm not the best driver and still trying to improve. but, i have a combo of numendahl's and hartson's setup. let the fast guy at my track drive it and he immediately laid down the fastest laps at the track. this truck is sweet.
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Old 07-18-2012 | 04:59 PM
  #26760  
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Originally Posted by muzzytt
Glad to report I have sold my train wreck of an experience sc104x4
Compared to my other truck losi scte it was rubbish
I did all the usual associated upgrade kit just couldn't get the truck to point straight on our outdoor track was nervous under powet and nervous off power!

Hell I even wasted $50 on the rcshokz centre diff ( very minimal difference)

Bye bye sc10 glad your gone!
I had this same problem, someone showed me that the servo has a tendency of coming loose.
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