OK Chaps.
Now i ame really confussed!!
I ent with a mate to the lake at the weekend, mine as you know is a kyosho c1 cat and he has a kyosho rtr monohull, about the same length but it has got te 28 engine in it. The performance difference was amazing and one does not like to be shown up at the lake. You know what i mean.
I have pulled his boat apart and the set up is the same as mine, the skeg, prop, tube, mountings etc are all the same so i am happy that the 28 will work in mine without ripping the guts out everything. I also understand that in the 2007 kyosho manual the 28 is a hop up, but no availabilioty details at present.
I soke to my model shop today and they said they could get me the os 31 by the weekend for 140 quid. I have had al look at the recomendations, the chang yany and the sts. The sts looks ok, little worried about the other one.
I will also need a header, flywheel, dog drive, and tuned pipe! The os comes with flywheel.
So what do i do!