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Scouser

Mad Bull Diff Question

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Evening all, hope you are all keeping well.

During these strange days I have found myself running multiple battery packs through the Mad Bull and enjoying every second. I have been running trail trucks pretty much exclusively over the last few years and didn’t realise how much I had missed a good old blast around at full throttle, kicking up rooster tails and basically hooning around.

The one thing I do miss about the trail trucks is their locked diffs. The Mad Bull will just spin its unweighted tyre and leave itself beached, requiring a helping hand to get going again.

Now I don’t want to lock the diff on the MB but I would like to get a ‘limited slip’ set up. Has anyone successfully achieved a lsd on Tamiya diffs or am I chasing rainbows?

Any help gratefully received.

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1 hour ago, Scouser said:

Evening all, hope you are all keeping well.

During these strange days I have found myself running multiple battery packs through the Mad Bull and enjoying every second. I have been running trail trucks pretty much exclusively over the last few years and didn’t realise how much I had missed a good old blast around at full throttle, kicking up rooster tails and basically hooning around.

The one thing I do miss about the trail trucks is their locked diffs. The Mad Bull will just spin its unweighted tyre and leave itself beached, requiring a helping hand to get going again.

Now I don’t want to lock the diff on the MB but I would like to get a ‘limited slip’ set up. Has anyone successfully achieved a lsd on Tamiya diffs or am I chasing rainbows?

Any help gratefully received.

The Mad Bull has an enclosed, but not sealed diff. You can't put any old oil in there to tune it, but thicker grease or oil will stat in there and stiffen it up. Look for tamiya AW grease, or something i found worked well was three blobs of the super stiff 2 million diff oil i use in the front of my touring car. Don't fill the diff, but a couple of blobs between the gears seems to stay put and slow the diff action down. 

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I used the Tamiya putty in all of mine. Gave enough slip to turn well but plenty of grip.

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Another vote here for diff putty. Holds well and won't leak out. 

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