madrat

[stampede vxlboy]

diff problem coming loose half way through a run can anybody help plz

[bigred5765]

which side is the diff screw on as you look at the car from behind?

[jim76]

yeah, check the diff is in the right way round. Also maybe replace the lock nut incase the nylon is worn. Or thread lock it a tiny bit

[Dazzler]

+1 for big red's suggestion (Diff in the wrong way round) but also check that the thrust race under the screw head is assembled correctly and is free moving to allow the diff screw to rotate freely in the LH outdrive.

[stampede vxlboy]

yeah, check the diff is in the right way round. Also maybe replace the lock nut incase the nylon is worn. Or thread lock it a tiny bit
diff the right way around i put so thread lock on it but did not take the screw on to do it just put some over the nut a tighten . but i will take the screw out and the nut out and try and thread lock it again my b4 will be here some :thumbsup:

[stampede vxlboy]

diff good but comes loose all the times after about 10 times :woot:

[peetbee]

If the threadlock isn't working, it's time to change the nut for a new one, as previously mentioned the nylon is no longer gripping the screw.

[super__dan]

You're sure it's not the slipper clutch slipping? Does it sound like a bark or a whineing noise?

[stampede vxlboy]

yes it does sound like that :thumbsup:

[rc_dan]

tighten your slipper, a half a trun see if it stops, back it of a bit if u feel its too much

[stampede vxlboy]

its the diff and slipper make like a thrusting nosie and a high winding nosie and the car driving crap :thumbdown: all my other car are shot on but the just cant get it right at all what shocks do used on the madrat rat have you got any metal bits for sale that you got off gibins you got loads of spare parts i was going to buy it you bet me by 10 second

[stampede vxlboy]

its full tighten up anjd i have turned it back half of a full turn

[jim76]

also thighten the diff up very tight. I had to tighten mine until i physically couldn;t turn the screw any more in order for the slipper to function before the diff.

Must say though, the diff is probably the smoothest of any car i have owned. I expected the diff balls to be cheese, but it is smoother than my old B4.

[stampede vxlboy]

i have done that in the past and put some thread lock down the drive cups to nut . but will take the screw out and do it right this time ,and how should the slipper be set up???? as the car is all over the place and driving crap

[jim76]

use a new nylock nut in the diff. Add a bit of threadlock to the screw to be safe and rebuild as per manual. tighten the diff right up until it is VERY hard to tighten the screw any more.

rebuild the car. Start with the slipper fairly loose and tighten a quarter turn each time until the slipper only whines for a few feet under hard acceleration (on a high grip surface). This will help prevent the car wheelying too much (asuming you have some lead in the front!)

[stampede vxlboy]

what size is the nut ? what that from been full tighten?. do i have to take the diff out of the gearbox ?????

[jim76]

check the manual for nut size, i'm guessing standard M3 nut off the top of my head.

I would advise taking the diff out of the car and rebuilding it from scratch. probably turn over the diff plates if it has been slipping and they are badly grooved.

[DCM]

Diff screw should be on the left hand side (motor side), and the nut on the right hand side (slipper side), nut is a 2.5m nyloc.

[stampede vxlboy]

which is the diff plate ? thanks i am trying everywere to get a nut cant get 1

[DCM]

order a tamiya diff nut, same thing.

[stampede vxlboy]

screw on the right and side i had problem with the diff before i sent it back to ansmann and in the maual its on the right and side

[Rich D]

i have done that in the past and put some thread lock down the drive cups to nut . but will take the screw out and do it right this time ,and how should the slipper be set up???? as the car is all over the place and driving crap


No use putting the threadlock on after the nut has been tightened. Its designed to sit in the threads between the nut and the bolt itself.

As has been said, yes, get a new nyloc nut and rebuild the diff carefully as per the manual.

[stampede vxlboy]

have you got a part number plz

[DCM]

screw on the right and side i had problem with the diff before i sent it back to ansmann and in the maual its on the right and side

if the nut is slacking off, that is a sign of the screw on the wrong side, if you study the manual correctly, the diff gets flipped over, but they don't mention it. On the picture (pic 11 page 6) if you look at the diff, on the right side, you can see the nut holder slightly protruding from the diff outdrive.

My screw is on the left, and apart from a little settlement, it hasn't budged.

[stampede vxlboy]

the nuts on the left side ansmann set the diff up as the diff was broken when i got the car . the screw on the right side spur gear side ?????

[bigred5765]

as i said before are you looking at the car from thefront or the rear ???

[DCM]

ffs mate, the screw SHOULD be on the left, the nut on the right, simple as that, you can argue till your blue in the face.

Nut on the spur side, screw head on the motor connector side.

[stampede vxlboy]

thanks ansmann built the diff up as my diff was broken when i got it from new

[bigred5765]

the people that are giving you advice no what there on about,please take advice when its given,some times things work better,doesn't matter what the manual says sometimes things change,and or worded wrongly,

[stampede vxlboy]

will i have to just take the screw out or take the diff out of the gearbox thanks for your help :thumbsup::thumbsup:

[bigred5765]

thanks ansmann built the diff up as my diff was broken when i got it from new


doesnt matter who built it the diff can be placed in the car ether way, but the way dcm is telling you is best, if you dont want it to come loose, why do you ask for advice then not take it,no would people get on at ya,:thumbdown:

[stampede vxlboy]

thanks for the help dcm . do i need to take the diff out of the gearbox ?

[DCM]

take out the gearbox, pull it apart, turn diff round, put back together, fit in car, check diff setting, run it, re-check, and as long as the nut and screw are ok, should be fine. Ball Diff's are not 'fit and forget' items, and do require regular maintenance, and keeping an eye on.

[jim76]

YES!!!!

[andyr]

how many more times does he have to be told ???????????????

[stampede vxlboy]

i am taking my gearbox to bits thanks for the help guys

[stampede vxlboy]

i have done the gearbox and its still make a funny nosie . how does the slipper have to be set as i have turned it back half of a full turn and its still the same :confused:

[Paulmay79]

READ THE DIFF SET UP THREAD

[jim76]

as i said previously in the thread. make sure diff is 100% tight, then tighten the slipper 1/4 turn each time and test to see if it still slips.

please don't make people repeat things 3-4 times, that's why thay lose patience with you.