yep
didnt want to touch them

both Snot583 & Tango620 have twin discs (the older dark M620's did have single discs too).

Andy threatened to put WD40 on Snotty's brakes for Paul tho:lol:

....when I go as fast as Geoff I will move up to two discs....:lol:

Good point and well made!

I suppose the 620 is more powerful than the 583 as well

Having used both single and twin discs, and P34 calipers (single and twin) and now using twin stock calipers...

I'd reccomend using twin discs with standard calipers and the pad of your choice.

That's also the conclusion that Geoff came to when I spoke with him last year.

I think it's the best compromise on power and feel.

I'd use that on a 583 too - purely coz I've had trouble with single disc set-ups in the past - mainly when I'm trying to stop from 100mph and they stopped stopping!!!