Crankcase & Crankshaft

For gaskets click here; engine plates, alternator parts click here; tie studs and crankcase tie bolts click here; oil pipes and unions click here; for alternators click here.

The Colt uses a built up crankshaft, which means that the big end, flywheels and mainshafts are separate components that are pressed together and retained by nuts. Wear takes place in the big end assembly, evidenced by up and down play but do not confuse this with side play. A fair amount of side play is acceptable, however figures for it are hard to come by and it is also expensive to cure. The only other problem likely to be encountered is wear on the shafts where the bearings run; they should be a light drive fit. Shafts can be reclaimed by industrial hard chromium plating and grinding to size. In order to replace any of these parts correctly, special equipment and skills are required all of which is available at Draganfly. Make sure that the oilways are clean before assembly!