Didn't seem to effect the performance any when this happened and I definately like to keep a clutch on that boat with its size. The 8S-rated Spektrum 160A High Voltage, water-cooled, Smart electronic speed controller works tirelessly to power the Spektrum Marine 4685 4 Pole, water-cooled motor which is capable of producing up to. I measured the stock clutch it is 3/16 and my bonzi is 7/32, He said you can build up the end with solder to get it to fit snugger. The Pro Boat Blackjack 42 Brushless 8S Catamaran is a return to the days of large-scale racing boats taking on all comers with style and speed. He said he thinks they aren't very consistinent with their dimensions. I called bonzi yesterday about it and they said when they designed that clutch they bought 10 flex shafts from proboat and checked the end dimensions on them and designed it to fit those. 07:55 PM: For Sale: Proboat Mystic 29(similar to. New Blackjack 29 hatch with 2 clear covers. But noticed the flex shaft fits a little loose in the square reciever and when I ran the boat the cable would lock in the reciever. Classifieds Boats (FS/W) Sold Proboat Blackjack 29 hatch New. So picked up the bozi replacement clutch for the blackjack 55 its a nice clutch dual bearings etc.
My clutch bell snapped off 2 weeks ago at the weld(not spot welded very good). Every once in a while when I start mine up after a run or two it will rev up and the clutch kicks in and then it settles down or I set it in the water and it will idle back down.