Somthings just not right.
 

Since i re build the diff after it died the car seem to run the same but doesnt sound right at all. Firstly the diff is making noise not too much but more than before and the motor seems louder. Am i right to be concerned??

Hi Paul, have you put the diff plates back the right way, there are two sides to diff plates from when they get stamped out, look closely and you will see a rounded edge and a flat edge, you want the balls to run and the face with the flat edge, another trick worth doing is with some very light wet and dry to sand the diff plates to make sure there are no imperfections and the plates are smooth and flat, only use a small amount of diff grease, I only ever use Associated diff grease, I know I may be telling things you already know but even I forget to put things back right. hope you get it sorted

Ta for the info mate. I didnt realise the plates were sided ill have to strip it abd check. Also i could have used too much grease.

Hi,

Did you check the thrust-race.

Thats the two tiny plates and about six tiny ball bearings that sit in one half of the outdrive. These get dirty/gritty and sometimes the plates even crack.

Its also possible to crack a diff plate if you over tighten them; espesially if theres a flat on the inside ie D shaped rather than O.

Ian

have you checked the spur for grit? might have a tiny bit in which will make it sound noisy.

Yes mate i fitted a new one.

I havnt but i will.

your t plate are fantastic mate you have made them better that anybody could of made them .there shot on i thing there worth every penny and more. there well worth more money thanks for the tplate your a top guy to put all the time into them :thumbsup::thumbsup: thankyou mate

A mate of mine had the bearings start to fail in his brushless motor. It had the sound of a diff slipping, Just something else to check. Still ran fine, but just noisy under the load of acceleration.

The bloody diff has died again this time the push stop bearing has fell apart!! Does any one know if b4 or rb5 parts will fit. I dont mind having to do minor adjustments. also what are yousr views on gear diffs against ball diffs?

RB5 main diff gear will fit, Xray tourer diff rings will fit, B4 diff balls will fit...;)

is the diff a little loose i notice u use a 5.5 it will destroy it always set the slipper to slip before the diff:thumbsup:

mad rat gear box
 

why does the mad rat gear box sound like a pred stripping its gears?:confused:

just curious about this as i'm considering one of these for my son.

mines as good as any other gearbox justtake care qwhen you build it

Same here, diff runs very smooth, does help that I run a 12th scale car and diffs on cars like that need to be as smooth a smooth thing, think I rebuilt mine twice and never had a problem with mine,
maybe its something to consider when running a super fast motor, its nice to have the fastest motor on the block but can we really control a car like that properly, unless your name is: take your pick, any of the top level drivers will do, like some rallycross drivers I know locally, big fast engines and no control and slighly shrunken brains but thats the nitro fumes for you,
but I digress quite a lot here, I kind of have that problem, I waffle a lot!! anyway as I said above its all in the preperation of diffs that make them work like they should, using the right components is a must, keeping it clean when building, the right amount of diff grease, flat plates and correct size diff balls and not forgetting to oil the bearings with quality bearing lube and learning how to set them correctly is hugely important, I must admit geared diffs make a lot more sense.

Can i get a gear diff that will fit????

possibly when they release the team c short course;)

my does the same it loud but the diff all set up right i makes a loud noise when set off and putting the power on :woot:

slipper is slipping then if its noisey when you put the power through :thumbsup:

its not slipping at all it just sound not smooth but run ok but nosiey

Its it makes a loud barkiing noise under acceleraton the diff is proberly loose.

A

its not at all it doesnt come loose

your making the Rat sound like a Dog now, never knew Rats barked!!

noise
 

is your car best mates with my pred, run ok but noisey. lol :lol::p;)

just because it doesn;t come loose while running doesn't mean it isn't tight enough. I had to tighten mine until i couldn't hardly tighten it any more.

to test, hold one wheel and the spur gear, keep them still so they don't turn, then turn the other wheel with your other hand. You should see the slipper turning. If the slipper stays still while the wheel turns then your diff is too loose.

tryed that its fine mate all i can thin k of is that i must have a bad 1 .but i have run it with out the gearcover on it coz the motor shaft is to long to fit the gearcover on but cleaned every time i used it :confused:

I also used to have this problem. It's fine after i changed to Kyosho RB5 Slipper pad and Spur.

a complete slipper clutch just the spur gear and pads nut and spring

the slipper and spur on the Ansmann, it isn't the best, the spur isn't completely circular, so it has high spots, and the spur material is yuk. If you were going to change, buy a B4 slipper assembly and spur, although you would have to ream out the inner bores to 5mm.

Migsy will tell you, mine is noisey, but no slip, and my cars don't do 'bad maintenance'

i've just taken my diff apart coz it was making a nasty noise yesterday during racing and found the thrust bearing had fallen apart:mad: now i cant find anywhere that do the size that i need. can anyone help me and point me in the right direction.
the part number is 125000449(2.6x6x3)

cheers Ginge:thumbsup:

Right i've looked everywhere now and nobody does a thrust bearing that size and i'm pulling my hair out :mad: whats left of it:p i was just thinking of buying the kit car and robbing that of parts:thumbdown:

Ginge

i think you have to order a try modelsports if you have the parts number. or try apex models they sell loads of stuff for the madrat . they sell them £1.50 each bearing the do the kit for £8.00

out breaking mr steve rich!!!!!
 

[quote=DCM;289253]the slipper and spur on the Ansmann, it isn't the best, the spur isn't completely circular, so it has high spots, and the spur material is yuk. If you were going to change, buy a B4 slipper assembly and spur, although you would have to ream out the inner bores to 5mm.

Migsy will tell you, mine is noisey, but no slip, and my cars don't do 'bad maintenance'

fare play, i will agree with you there...your cars are well looked after and your maintenance is top notch. :thumbsup:

even your braking is still good, as you showed yesterday going into the left hander off the back straight...nice bit of driving from both of us there i think.;)

Alan. :p

I dont suppose you could sort me some pt numbers for the slipper assy could you??

do you need to buy a complete slipper spur gear plates ande spring and the nut ? have you got any part numbers plz thanks

Kev Brunsden at Apex was telling me he found the Spring inside the diff to have completely lost it's tension and just shrunk up to the size it would have been compressed to.

This would cause major problems with it slipping to check the spring when you take the diff apart.

He found a Tamiya diff spring that fits, although i'm not sure which one so may be worth looking into that or possibly even an RB5 diff if the main gear fits?

Would the whole rb5 gear housing fit??

Nick, I could be wrong, but I don't think so, all the Tamiya diff's have the same screw, nut, spring and thrust setup, and it be all metric, worth a bash!! I did notice that the spring compressed alot between the pliers.

Im going to look towards kyosho stuff

will the kyosho diff fit in a mad rat? coz i'm loseing my mind over this thrust bearing no one has them in stock:mad:

Ginge