|
I made a first testdrive with the lower engine capacity on the Burgman. The gearing which is of the larger engine is still OK to get off the line quickly. Probably due to the long stroke. The gearing of a 250 cc Burgman is 14 km per 1000 rpm with a stroke of 59.6 mm while I have now on the 300 cc a 18.3 km per 1000 rpm but with a stroke of 71.2 mm. I am still using the large carburettor of the 385 because that has an ingnition advance switch coupled to the butterfly. I am prepairing a smaller carburettor of the 250 cc Burgman but have to build the ignition switch function to this carburettor as well.
I expect some more torque when I can change to the smaller carburettor.
__________________
|