Abstract: This invention provides a thermosetting composition comprising (A) a compound (A-1) containing an epoxy group or groups and a reactive silicon group or groups as essential functional group components in the same molecule, or a mixture (A-2) of an epoxy group-containing compound and a reactive silicon group-containing compound, and (B) an organotin catalyst, a thermosetting composition comprising (A) a compound (A-3) containing (i) an epoxy group or groups, (ii) a reactive silicon group or groups and (iii) a hydroxyl group or groups and/or a carboxyl group or groups as essential functional group components in the same molecule, or a mixture (A-4) of at least two types of compounds, each compound containing at least one member selected from the class consisting of functional group components (i) to (iii), and all of the functional group components (i) to (iii) being present in said mixture, and (B) an organotin catalyst; and methods of forming a finish coat using these thermosetting compositions.

Abstract: In a vehicle body frame for motorcycles of the type that a single-tube main frame extending from a head pipe to the rear of the vehicle body and a single-tube down frame extending downwards from the head pipe are connected with each other via a plurality of frame members, the down frame is detachably connected to the plurality of frame members by means of additional side frame members.

Abstract: A motorcycle is provided with first and a second fuel tanks. These tanks are provided with fuel charging ports respectively. Both the fuel tanks are intercommunicated through a communicating pipe. Since the communicating pipe can be shut by a cock, fuel can be charged into both the tanks promptly through both the fuel charging ports. The communicating pipe is provided with a fuel pump actuated by a diaphragm communicated with an intake manifold of an engine. Accordingly, even if one of the fuel tanks is disposed at a location lower than the carburetor, fuel within the fuel tank can be fed to the carburetor via the other fuel tank. The first and the second fuel tanks may be combined to constitute a single fuel tank.