There really is no downside to it that I can find, it doesn't negatively affect ride quality whatsoever with respect to comfort or harshness but it does make a very marked improvement to body roll and hence driver and passenger comfort.
As to why Rover in their engineering genius didn't think to provide uprated anti roll characteristics I have no definitive answer maybe it's just a case of the ride level was upto the standards expected of the day? remembering of course this was a car conceived in the latter years of the 1950's
Perhaps there were concerns for body shell stiffness and undue (undesigned ) loading but I think that is unlikely.
But to me as a driver it is a huge plus factor in the handling and comfort stakes.
Probably because it was simply a different world then. The Rover wasn't rolly-polly by 1963 standards and of course mini-roundabouts or indeed many roundabouts didn't exist. You can ask the same question as to why they are so undergeared when the engines would cope fine with taller ratios.
That's interesting that Colin is selling them now. Who found that out, was it you Rich?
After exploring other arb options and having so many areas of my project requiring my attention, I may well be interested again!
I would like to know exact specs of his bar, material and dimensions, and of course the exact price..
Stan do you still have the original bar you had made?
The cheapest way to do this is use the rear ABR from a Peugeot 306 (I believe models have various thickness's, we used one from a HDi, it was 24mm) and get someone to machine the hex into the ends, pictures of this simple process are available on our blog A new anti-roll bar.
What's the minimum run? Are we to do a kit with new hi-ten bolts or can we reuse? Reading the thread is it essential to fit bigger ones? Anyone able to source the Aussie chassis strengthening kit in the UK too?
As I said if its like a 10 piece minimum run then I'm certain half could be sold straight away. TBH it sounds like as a P6 owner you'd be nuts not to unless yours is an original pristine example. I'd be happy to front up the cash for the remainder if a supplier would take them and I'm refunded at cost as they are sold. My only concern would be my personal liability...
So it turns out that Colin's bars are 19mm or 3/4".
From experiences of members with the different sized bars, I would say that's not enough of an increase over the standard 17mm/11/16" bar. I believe the calculation for increase in stiffness is to the 4th power.
When using this calculation
The 19mm bar would be 1.5 times as stiff as the standard 17mm.
A 22mm bar would be roughly 2.8 times as stiff, didn't Brenten have one this size?
A 24mm bar would be roughly 3.9 times as stiff.
If these calculations are indeed correct and we go on real world results, the 19mm bar is unlikely to make enough difference in my opinion regardless of it being 1.5 times as stiff. I certainly would like at least a 22mm bar for my car, preferably a 24mm.