thanks greg, i tried the kyosho 46 on my crt.5 but the gear was to thick and the bearing was missized so i gave it up.You have aparently had some sucsess with it.Is it a direct bolt in as i suspect,or is there alot of shmuzing required.Additionaly,is the losi spur you mentioned a plastic gear or is it steel?And do you recall what ratios you used for these two spurs? Thanks loads