try both it may depend on your driving style.
Locked is definately alot more fun for flicking

I have been doing motorkahnas on and off for the last 10 years and locked is the only way to go.....even on grass.....an open diff will just single spin and you will go nowhere.

I won the first couple of gp5 kahnas last year in a bog stock 120y, with stock a12 and a locked diff being the only mod......

yeah, most rally cars are like that.

you can easily weld brackets onto the standard handbrake to mount and actuate a hydraulic cylinder, or make one from scratch using the original rachet mechanism. no need to fork out big money buying one.

Check with the RTA regarding your handbrake. In ACT you can run a hydraulic handbrake in a road registered car as long as it has a locking mechanism so you can keep it in the ON position, a bit like the ratchet on a normal cable operated handbrake lever.

It is locked at the moment, so I think I will leave it that way and see how it goes. Then when everything is sorted in the car I may look at an LSD. Yeah im thinking about getting a hydralic handbrake. My only concern is getting a RWC with one in, because handbrakes are meant to be a secondary, different (ie cable) means of stopping the car. Perhaps I have 2 handbrakes???

UnderSteer? Just fan the clutch and wind on the opposite lock. . .

I think there is a hydralic handbrake on ozdat at the moment.

LOCK THE B1TCH

for motorkhana and the choice of anopen or locked diff - definitely locked. even for bitumen motorkhanas. open diffs are only good for going to the shops.

an open diff will be useless for trying to flick the car around tight cones. it will also be useless trying to get traction and drive through slaloms, and out of any corner or away from each witches hat, or when doing j-turns etc etc... but you will need to play around with the suspension settings to get rid of the understeer, and get some decent tyres for the front.

A good handbrake is also VERY important for motorkhanas.

If you are driving on relatively slipery surfaces, then the locked diff will be OK I guess, but if the surfaces are dry & hard, then cary a couple of spare axles & a diff gasket. You'll be needing them sooner or later.
I think that Rallytwit is right. An LSD, in good mechanical condition, will be the best compromise.

Given the tight turns I would say open diff , locked diffs are for super speedway ovals and drag racing , anything else get a LSD....you won't regret it.

Tom