new idea to solve old problem

[Cheapinri]

been able to go up and down this hill with a toro dingo tx425

[amphibious drew]

Typically you want the tires to all be the same size or else you will cause excess stress on the chains and sprockets. That being said, if you must use chains, put them on all 6 tires. You probably should through a new driven spring in the clutch as well. I have low end torque issues with an old crappy spring running a G50b. But honestly, a red spring and a harbor freight engine with a new drive clutch would be ideal for what you are wanting it to do. 4-strokes can climb easily at low rpm.

[Cheapinri]

spring is coming up faster than i thought picked up 6 golf cart tires on rims for cheap over winter and made some adapter plates .Now i have to drill out broken studs and mount them next weekend . lube chains and figure out how to adjust them.