Using up my small bore DOM cylinder liner material and left over bevel gears, I build an easy runner with a light weight flywheel. Longboy's "THREELING ALONG" engine story coming this week! 
Longboy's "THREELING ALONG" Model Engine.
- Thread starter Longboy
- Start date
Help Support Home Model Engine Machinist Forum:
THREELING ALONG a milestone engine for me being number twenty of my gas engines. 
This 33cc model begins with an order from Amazon for some flywheel material.
In the box, four cast iron casters. Four inch diameter by 1 inch tire width.
Squaring up the caster flywheel. The hub is bored to 1/2 inch to receive a pressed in T-shaped steel hub. A new bore for a 5/16 in. shaft is drilled then along with a 7degree taper for collet lock mounting of flywheel to the shaft.
Narrow the tire to 3/4 in. width and face off and file smooth.
The collet is Delrin, matched taper to the new hub. A brass disk on hub end draws the flywheel onto the shaft and collet.
The finished flywheel is very light at 17 ounces. I have a steel dick that bolts to the backside if I need the extra heft.
This 33cc model begins with an order from Amazon for some flywheel material.In the box, four cast iron casters. Four inch diameter by 1 inch tire width.
Squaring up the caster flywheel. The hub is bored to 1/2 inch to receive a pressed in T-shaped steel hub. A new bore for a 5/16 in. shaft is drilled then along with a 7degree taper for collet lock mounting of flywheel to the shaft.
Narrow the tire to 3/4 in. width and face off and file smooth.
The collet is Delrin, matched taper to the new hub. A brass disk on hub end draws the flywheel onto the shaft and collet.
The finished flywheel is very light at 17 ounces. I have a steel dick that bolts to the backside if I need the extra heft.
Attachments
Similar threads
