Electric Victa Mower Conversion Build Thread-Dealing With The 2 Stroke Stinka
The previous introduction post discussed why do an Electric Mower Conversion, the requirements of the Electric Mower, basic parts list and tools list. This post will discuss how we deal with the 2 stroke stinka engine and the basic design decisions that are being made. The advantages and disadvantages of the design decisions are outlined.
Most people who do EV conversions or Electric Conversions tend to remove the smelly gas engine to make way for a clean electric motor. This is a sensible approach so why would I keep most of the Victa the Stinka gas engine in my Electric Mower Conversion? The reasons why I intend to keep the engine block and crankshaft are:
- I’m not sure what strain the mower blades will have on the electric motor so I have two choices. One is to add another support bearing to the electric motor, but that is tricky for me. The other option is to utilize the existing bearing of the gas motor and bolt the electric motor to the crank case via an adapter plate.
- No need to take the blades off during this conversion.
What stays and what goes on the Stinka 2 stroke engine?
Obviously, I won’t be keeping everything on the Stinka 2 stroke engine. I don’t intend on making this a hybrid lawn mower, but rather a full electric mower. However, I plan on utilizing some of the gas engine components, but the incomplete gas engine will not be used to power the mower. Items removed from the gas engine are:
- Recoil starter and cover.
- Fuel tank.
- Cylinder head.
- Air filter and air cleaner hose.
- Piston and conrod – although, originally I had thoughts of not removing these parts because
- it would have helped with maintaining balance.
- there would have been no need to remove the bolt on the crankshaft which held the conrod in place, especially when you don’t have the special Victa tool to remove that bolt.
Items that stay on the gas engine are:
- Engine block.
- Crank shaft.
The advantage of keeping the existing, but incomplete gas motor are:
- Protection of electric motor should the mower blade strike a rock since the gas motor bearing will be the first bearing to take the shock.
- Easy conversion process.
- This method has been successfully done before as published in ReNew magazine.
What are the disadvantages of keeping the existing gas motor?
There are several disadvantages of keeping the existing (but incomplete) gas motor such as:
- Extra weight.
- Space wasted which means where does one locate the batteries?
So now that the basic design decisions have been discussed, the next few posts will discuss the implementation and build processes of this Electric Mower Conversion.
This is Al Bunzel signing out.