Cr diff

ashleyb4 · #1 21-02-2008

Tongiht at racing my speedo kept going slow i thought what! this aint right by the ooks of it my speedo had thermalled for soem reason it came off hot i couldnt find out why my gearing was the same no crap in drive chain its all free then in last round it just went dddddrrrr like the pinion came loose or i had stripped the spur but it wasnt . So i held the spur and did the turn the diff and the other wheel just turned in the same direction no diff action! So took it apart just assumed it just needed a rebuild or soemthing so i took it out blasted all the balls down and old grease out rebuilt with losi diff lub the cream stuff and still no diff action i turn the oen out drive and th eohter doesnt turn at all no missing diff bals or anything :

can anyone help.

A

Darren Boyle · #2 21-02-2008

Sounds possibly like one of your thrust race plates may be cracked

ashleyb4 · #3 22-02-2008

thanks daz will strip it in morning and check also been suggested it mgiht be a bearing not sitting right.

A

super__dan · #4 22-02-2008

COuld it be relatewd to those copper shims that are designed to slip? Have they worn through and so only slip?

_sleigh_ · #5 22-02-2008

Same thought as Dan, but maybe you left them out last time you rebuilt the diff??

Is so, you'll never get the diff to do anything other than slip.

Must admit I never liked the CR diff.. so I just slapped a normal XX4 diff in mine when I ran it last season

Kopite · #6 22-02-2008

how often would you consider replacing the copper shims?

Ash, make sure the thrust plates are in the correct order on the diff screw, i made that mistake the first time round (they're different sizes)

Phil, is the xx-4 diff the same size as the cr? even the outdrive lengths?

_sleigh_ · #7 22-02-2008

Stan.. I can't honestly remember.

But the first mod I did was to dremel a flat on each of the CR diff halves and then use the normal XX4 diff plates. If you try this mod, then you can always go back to the CR diff plates nice and easy.

ashleyb4 · #8 22-02-2008

The diff has done quiet a few meetings but wouldnt exspect it to wear out this quickly i have a spare xx4 diff if i need it ican throw that in with the cr diff gear. Im gonig to have alook at it.

A

ashleyb4 · #9 22-02-2008

HAHA your going to love this i took the diff rings uut and they have sort of um well its hard to descrive the edges have craked then come off to the diff rings look like liek a saw blade lol. Why woul it have doen that?

A

ashleyb4 · #10 22-02-2008

So i rebuilt it using the xx4 diff hlaves and diff rings but its very notchy

A

Wraggy · #11 22-02-2008

Quote:

Originally Posted by ashleyb4

So i rebuilt it using the xx4 diff hlaves and diff rings but its very notchy

A

if you have shattered your diff rings then i would put new balls in also ..
thats why its notchy i would of thought ..

PaulRotheram · #12 22-02-2008

bit off topic.. but Ashley.. seriously slow down with the typing, all of those posts are only just about readable!

Kopite · #13 22-02-2008

maybe try a comma or two as well

Lee · #14 22-02-2008

Yeah i was out of breath reading that in my head

ashleyb4 · #15 23-02-2008

Ok ive rebuilt my diff using xx4 outdrives and diff ring put it in the car and tightentned it up then i did about 5 meters and it keep loosenging itself why would it be doing this? Just to bouble check the diff screw head goes the same side as the motor endbell yes?

A

niggs98 · #16 23-02-2008

i shall get u to double check everything on msn m8, much easier than trying to explain it all on here

Wraggy · #17 23-02-2008

Quote:

Originally Posted by ashleyb4

Just to bouble check the diff screw head goes the same side as the motor endbell yes?

A

the diff screw head goes the same end as the spur Ash..unless Losi is different ??

strobe · #18 23-02-2008

Ash. Did you go to school. Or did you bunk off when it came to english lessons and how to write a sentance properly. It is very piss poor for somebody of your age.

tyreman · #19 23-02-2008

Quote:

Originally Posted by Wraggy

the diff screw head goes the same end as the spur Ash..unless Losi is different ??

Losi is different

Looking at the car from the back, the diff screw should be on the left hand side.

tyreman · #20 23-02-2008

Quote:

Originally Posted by ashleyb4

Ok ive rebuilt my diff using xx4 outdrives and diff ring put it in the car and tightentned it up then i did about 5 meters and it keep loosenging itself why would it be doing this? Just to bouble check the diff screw head goes the same side as the motor endbell yes?

A

Are the cone washers under the diff nut ok? or have you over tightened them and flattened them? Sometimes just replacing these, and putting a new diff nut, on makes a big difference.

Your not trying to use the spring in the old diff halves are you??
If you are there's you problem.