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Post by Reuben on Dec 2, 2010 14:43:26 GMT
I think I have a diff issue, what would cause it to slip unless its really tight - making it hard to rotate.
The diff is smooth and was built using 600 paper and xray diff lube in both the thrust and plates (as per manual). But the diff seems to slip unless its really tight.
where should i start?
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Post by Reuben on Dec 2, 2010 15:33:00 GMT
fixed my own issue - it appears diff lube on the backside of the diff rings is a no no :S
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Post by darrenoakley on Dec 2, 2010 16:55:16 GMT
Did you think the Hudy diff grease that comes with the T3 is super thin. Tried it in the 12th and it just goes everywhere when you spin it up. Would imagine it would be bone dry after one run without covers on.
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Post by justchris on Dec 2, 2010 18:48:50 GMT
[quote author=geubes board=setups thread=2272 post=18305 where should i start?[/quote] With a Tc 6  |
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Post by Reuben on Dec 2, 2010 19:58:27 GMT
[quote author=geubes board=setups thread=2272 post=18305 where should i start? With a Tc 6 [/quote] If you can Lap me with your TC6 without me crashing I will Buy a TC6 the next day until then Ill stay Orange  |
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Post by lesbaldry on Dec 2, 2010 22:51:08 GMT
fixed my own issue - it appears diff lube on the backside of the diff rings is a no no :S They are just plain rings then no inner "D" to lock them in place?.....The 416 diff is like this and will slip unless a sticky grease is used and in extreme circumstances a soft thread lock can help matters,It pays to keep the back side of the ring surface rough and perhaps roughen or even score the out drive face too. |
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Post by yellowshark on Dec 2, 2010 23:21:25 GMT
I have always built our XRAY diffs the same way Reuben and never had a problem. Put a small blob of the XRAY grease on my palm and then the 12 balls and move them around in my palm with the other forefinger. Place the balls in the holes and complete the assembly. End of.
So yes there would be no grease on the back of the rings
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Post by yellowshark on Dec 2, 2010 23:39:23 GMT
[quote author=geubes board=setups thread=2272 post=18305 where should i start? With a Tc 6 If you can Lap me with your TC6 without me crashing I will Buy a TC6 the next day until then Ill stay Orange [/quote] ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D |
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Post by yellowshark on Dec 2, 2010 23:43:19 GMT
BTW Reuben the thrust bearing in the XRAY comes pre-greased in the kit or if you buy a complete new diff. No doubt differing opinions but I have never greased the thrust bearing in a new XRAY diff. Oh and it aint Reuben's special club anymore  |
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Post by Reuben on Dec 3, 2010 0:14:18 GMT
OMG I think my personal space just got invaded!
Yeh Im thinking a bit of thread lock might do the trick, only weak stuff though.
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Post by lesbaldry on Dec 4, 2010 17:57:48 GMT
OMG I think my personal space just got invaded! Yeh Im thinking a bit of thread lock might do the trick, only weak stuff though. Yep the stuff that dont go hard Reuben.....Tamiya soft lock is perfect,it stays gummy but has plenty of grip.......dont take any notice of Pete,he didnt realise the Xray had a side thrust till we told him ;D......last year  |
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Post by yellowshark on Dec 5, 2010 0:09:07 GMT
OMG I think my personal space just got invaded! Yeh Im thinking a bit of thread lock might do the trick, only weak stuff though. Yep the stuff that dont go hard Reuben.....Tamiya soft lock is perfect,it stays gummy but has plenty of grip.......dont take any notice of Pete,he didnt realise the Xray had a side thrust till we told him ;D......last year LOL, in my defence though Les, having run XRAY diffs for 4 years. By the time the thrust goes you are probably onto your 3rd set of rings and balls already and at least one outdrive has seen better days. The cost of rings/balls/thrust are almost the same as a new diff so I just buy a new one. So you get a new set of outdrives and teeth for free. Must investigate that mysterious thruster one of these days though |
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Post by jamietraylor on Dec 5, 2010 18:03:15 GMT
If you type in the size of the thrust on eBay you can usually get about 5 for a fiver! Personally I clean mine every time I do the diff unless I'm in a rush!
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Post by Reuben on Dec 5, 2010 18:32:54 GMT
that bloody diff was apart 4-5 times today and everything looks straight and when put together induvidually its smooth as silk - but tighten it up and a massive tight spot appears and then the entire diff goes tight and still slips!
anyway I have a spare diff from a 009 that I will strip and transfer parts over one at a time to see where the issue lies.
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Post by jamietraylor on Dec 5, 2010 18:53:09 GMT
Bent diff screw maybe?
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Post by Reuben on Dec 5, 2010 20:48:02 GMT
Ok just an update:
Thurst into a 009 diff - smooth as silk
009 outdrives onto 011 pulley and balls - smooth as silk
next thing on the list: 009 diff rings on 011 diff, then who knows ?P
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Post by Reuben on Dec 5, 2010 22:21:26 GMT
hmm spent over an hour in this now and STILL none the wiser! getting plenty of diff building practice though!
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Post by darrenoakley on Dec 6, 2010 18:13:21 GMT
Not got a ball that's not perfectly round?. Not really anyway to check that as there so small. Can't think what else it could be really as you have covered everything mate.
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Post by mattsedgley on Dec 6, 2010 19:30:18 GMT
if they're ceramics they could have been crushed when tightening the diff up, possibly.. I've done that to a schumacher diff this year  |
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Post by Reuben on Dec 6, 2010 22:56:01 GMT
Found my problem its one of the outdrives,
Using the T3-11 outdrives, there is a nasty tight spot. Remove outdrives and add 009 outdrives to same diff setup and it is silky smooth.
hmm time for an email
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Post by yellowshark on Dec 7, 2010 0:09:49 GMT
;D ;D ;D ;D ;D ;D ;D
Reuben if the outdrive was faulty out of the box, in my experience XRAY will change it foc
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Post by Reuben on Dec 7, 2010 22:25:18 GMT
so after building and rebuilding the diffs about 15 times, I got completely lost on what I had tried and what I hadnt - anyway a very long frustrating story short, I need new conical washers  , one or two must be duff. using the washers from my 009 diff now and its super smooth. End of this thread - diff is in the car and its awesome again |
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Post by gwesty on Dec 8, 2010 19:48:38 GMT
hi guys , thought i might add that the spec r gear diff is the way forward !!! if using a ball diff then i found a heavy sticky grease on the back side of diff ring onto the outdrive helped loads with forward traction and u can run the diff alittle looser ,to get that ultimate smoothness . hth gw |
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Post by lesbaldry on Dec 13, 2010 22:04:57 GMT
Hi reuben I was a little tied up sorting the TC6 yesterday when you showed me your problem sorry!.....From what I saw and what you explained it seems but most unlikely that the diff screw is loosening itself,this used to happen in some of the early cars if the diff was put in the wrong way.IE the thread of the screw was running with the rotation of the diff direction there for undoing its self,normally the rotation of the thread (right hand thread) was placed against rotation so it was allway trying to tighten its self. Modern diffs don't normally suffer this theses days and can be swapped over with very little problem.should your thread on the Xrays diff run with rotation the only cause that I can think of is a binding or sticky side thrust in some way that occasionally holds that end of the screw for a fraction therefor loosening it over a period of the race when the wheels "diff up"......I hope this might help as its all I can think off appart from a load of thread lock |
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, one or two must be duff.