dam ratty diff

[wayne]

hi ppl ...not sure ill be able to make the next meeting ..i rebuilt the diff on my mad rat ang guess what ...reason diff playing up is cos the thrust bearings are completly shot ......need new diff or bearings ...ill try find something

[wayne]

ive kinda got it working now lol ....

[wayne]

nope its officially dead now.....have to wait for new parts

[mikeyscott]

Get some bits ordered from JE Spares?

What diff lube and thrust race grease are you using?

What size are the diff balls?

[wayne]

hi mike ...i think it was something to do with my build ...any way i did what the kit instructions said and when i came to service it [after it messing around on sunday] the thrust bearings looked like w, well there was only 3 left the rest were disintergrating,n there the smallest ive seen ...ive ordered another complete kit ..this time ill make sure the diff is correct and ill have enough spares for a complete new car ...just have to wait till it arrives ..just may not make this sundays racing is all ..but im hoping to

[simoncrabb]

Grr, ball diffs, they rarely last a meeting these days!

[wayne]

i hear that ...from the forums ...everyone has trouble with ansmann diffs especially the ratty one but hope fully my new one in more reliable

[super gripper]

Originally Posted by simoncrabb

Grr, ball diffs, they rarely last a meeting these days!

Tamiya ones work fine

[wayne]

thanks for the reminder mr gripper lol

[super gripper]

Originally Posted by wayne

thanks for the reminder mr gripper lol

No probs mate. I have some motor brushes you can have for free mate. But I won't be there this weekend.

[simoncrabb]

Originally Posted by super gripper

Tamiya ones work fine

Err, no they don't, they're all as bad as each other. Ahh, but you're probably using steel balls? Yes, they last longer, but aren't as smooth, ceramic balls are the only option in my opinion!

[mikeyscott]

Can you get ceramics for the madrat? I am surprised quite a few manufacturers don't, particularly the expensive ones!

[wayne]

hey ,,hope all is well .....ive only not see any ceramic balls for the mad rat ..if any one does can they let me know please

[mikeyscott]

Aren't they a funny size? Let us know the size.

[simoncrabb]

I *think* Mad Rat balls are 3/32 and 1/16, ie the usual AE / Kyosho size... But will have to confirm that...

[simoncrabb]

The main mad rat diff balls are 3/32 (2.37mm) - so a common ceramic size.

I've got the 5 main sizes of ceramic balls on the way: 3mm, 2.5mm, 3/32, 5/64, 1/16. Packs of 12 for £7 each.

The mad rat thrust is caged though, so not sure on size of balls, but if one is measured you'll probably find it's possible to use loose (ceramic) balls instead - and probably more balls too than a cage will allow. A pain to build loose ball thrusts though!

[mikeyscott]

Originally Posted by simoncrabb

The main mad rat diff balls are 3/32 (2.37mm) - so a common ceramic size.

I've got the 5 main sizes of ceramic balls on the way: 3mm, 2.5mm, 3/32, 5/64, 1/16. Packs of 12 for £7 each.

The mad rat thrust is caged though, so not sure on size of balls, but if one is measured you'll probably find it's possible to use loose (ceramic) balls instead - and probably more balls too than a cage will allow. A pain to build loose ball thrusts though!

Ah it's the 2.37mm that threw me. Yup 3/32 is nice and common

Nice one Simon

[wayne]

thanks ....and the ball thrust bearing is actually loose .they got fried when the diff came loose i think ..but not sure on the size accept ..smaller than the b4 ones ...