welded diffs front and rear in Brumby!

steptoe · Post by **steptoe** » Tue Apr 17, 2012 1:35 pm

While I was in a yard attempting to process a pair of Brumby wheel tubs for a certain UK member I got talking to a fella who had a farm ute in his younger days. He'd welded up both diffs and built an all access little beast that ran bobcat tyres and rims, came to an end when he used it to tow away a section of old growth tree that was blocking the road. Tree got some momentum going down the slope and took the ute with it - driver and two kids on board - parked it on its side, and for the first time in its life needed a hitch from another 4x4 instead of the other way around

thunder039 · Post by **thunder039** » Tue Apr 17, 2012 2:12 pm

cant imagine completing a u turn very easy

taza · Post by **taza** » Tue Apr 17, 2012 2:33 pm

That would be awesome for offroad but undrivable onroad!

thunder039 · Post by **thunder039** » Tue Apr 17, 2012 2:44 pm

i think even doing a tight turn on offroad would be a struggle.
did he have any pics?

Brad_Stacey · Post by **Brad_Stacey** » Tue Apr 17, 2012 4:47 pm

This has got me thinking.
What would be the result/handling welding the rear diff only in the automatic.
Since it normally runs 90% front would it still be alright on road.
Then with also centre diff lock mod get out of some sticky situations???

Thoughts...

pezimm · Post by **pezimm** » Tue Apr 17, 2012 5:03 pm

Brad_Stacey wrote:This has got me thinking.
What would be the result/handling welding the rear diff only in the automatic.
Since it normally runs 90% front would it still be alright on road.
Then with also centre diff lock mod get out of some sticky situations???

Thoughts...

I reckon even without torque, the rear wheels need differential rotation when going around a corner, so having the rear diff welded would make your rear tyres skip on bends.

Only real road usable welded rear diff is by removing 1 rear drive-shaft and fitting when off-road.

Pedro.

thunder039 · Post by **thunder039** » Tue Apr 17, 2012 5:51 pm

pezimm wrote:I reckon even without torque, the rear wheels need differential rotation when going around a corner, so having the rear diff welded would make your rear tyres skip on bends.

Only real road usable welded rear diff is by removing 1 rear drive-shaft and fitting when off-road.

Pedro.

i have personall been in a car with the rear diff welded. although it is rear wheel driving. the inside wheel skips alot at low speeds but once moving you dont notice it at all. i plan on welding the rear diff in the foz when it is retired from everyday duties

steptoe · Post by **steptoe** » Tue Apr 17, 2012 6:32 pm

no pics, and yeah, he said it was a bastard to turn and was more a mountain Brumby than anything else - not registered

Funny how just owning a Brumby gets peoples memory flowing of their own encounters with a Brumby - all fond or fun too!!

littlewhiteute · Post by **littlewhiteute** » Tue Apr 17, 2012 6:38 pm

With the front and rear diffs locked and no centre diff, a Brumby would be an absolute pig to steer.

Forget about turning on full lock.

The engine wouldn't have enough power to power slide.

I would NEVER EVER think about running a locked or welded diff, front or rear, in a street car.

It's just a cheap way of accomplishing what can be done with a DECENT lsd or airshifted locker.

thunder039 · Post by **thunder039** » Tue Apr 17, 2012 6:49 pm

littlewhiteute wrote:
It's just a cheap way of accomplishing what can be done with a DECENT lsd or airshifted locker.

exactly

B00sting · Post by **B00sting** » Tue Apr 17, 2012 7:18 pm

The only rear diff I have ever welded is a POS VN V6 wagon. And boy do I wish to forget those days!

On the other hand lockers have there place, a friends old turbo VK wagon (550rwhp+) had a full spooled 9" but obviously this suited the application.

I'm aiming for air lockers in the brumby at some point.

YouTube · Post by **El_Freddo** » Tue Apr 17, 2012 9:29 pm

B00sting wrote:I'm aiming for air lockers in the brumby at some point.

Aren't we all!!

There's a reason why this was left for paddock duties.

Steptoe, your mission, not that you have an option now, is to get some pics of this beast in it's hay day!

Cheers

Bennie

steptoe · Post by **steptoe** » Wed Apr 18, 2012 8:58 am

I'll ask Pete for pics next time I'm there. I reckon the bobcat wheels would have been a bit harsh anywhere but the paddock too. They were an auction item that did not sell over several auctions so he got them for a buy it now price of $100, and about 70 to get an engineering shop to redrill the filthy thick rims to suit the Brumby stud pattern