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nkaminar · 11-21-2020, 12:55 PM

The Fordor I just bought has a lightened flywheel. It weighs a lot less than the original, maybe 35 pounds. This is the first Model A have owned with a lightened flywheel so I have a question for the group. The engine has a counter balanced crank.

It seems to me that there is more vibration when I back off the throttle compared to previous Model A's have have owned with the stock flywheel. The vibration seems to be torque vibration, not out of balance or another type. I get the same impression when accelerating but not as much. The Model A engine is only 4 cylinders. It seems like the flywheel is fighting with the cylinders.

When running down the road at a constant speed the engine is almost vibration free. It has far less vibration than other Model A's I have owned.

Thanks in advance for your comments.

11-21-2020, 12:55 PM	#1
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,897	Lightened Flywheel The Fordor I just bought has a lightened flywheel. It weighs a lot less than the original, maybe 35 pounds. This is the first Model A have owned with a lightened flywheel so I have a question for the group. The engine has a counter balanced crank. It seems to me that there is more vibration when I back off the throttle compared to previous Model A's have have owned with the stock flywheel. The vibration seems to be torque vibration, not out of balance or another type. I get the same impression when accelerating but not as much. The Model A engine is only 4 cylinders. It seems like the flywheel is fighting with the cylinders. When running down the road at a constant speed the engine is almost vibration free. It has far less vibration than other Model A's I have owned. Thanks in advance for your comments. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.