Lets see if we can stir up some traffic - Shop Project time
Posted: Wed Jan 28, 2026 4:09 pm
I'm all about More Power [/Tim the Toolman] and it's rubbed off on my Grandson
He clears his driveway with an ancient MTD 10/24 walk behind and the motor has been seriously tired for a while. When the electric start defecated in the sleeping apparatus, he enquired about putting a new motor on it.
Horror Fright doesn't stock a 10 horse horizontal shaft, so (I'm so proud!) he went bigger. Got a 13 horse just like the one I put on my blower. Lugged all the pieces-parts down Monday and we designed and built an adapter plate to mount the motor and started on figuring out belts and pulleys.
Motor mount was pretty straight forward as I'd done the same thing to mine. Just a 9x9 plate with a couple of 1x1 runners under it that fit the holes in the blower and drilled a set of holes to fit the new motor in the plate.
Pulleys were a bit more involved as his MTD uses two pulleys to drive the fan and auger. Mine only used one so any old pulley with a 1" bore would work. The only double pulley I had was 7/8ths bore but I bored it out and broached a new keyway in it. That sumbitch was HARD! Like to never drove the broach through it. Then noticed that the spacing on the grooves wouldn't match up to the pulleys on the blower.
Turned out to be easier to bore out the original 4-piece (four pulley "halves" sandwiched together to form a double pulley) set up. LOTS easier to broach too. On the original setup, the bores were 7/8ths and had a male tang in the bore that fit the keyway on the crankshaft. Used a carbide rotary bit and a die grinder to take the tangs out then bored and broached as normal.
Next thing was to make a spacer between the rear (wheel drive) pulley and the blower drive pulleys. Plan A was to find some suitable round stock and bore it out and broach it. Whilst rummaging around in my Inactive Inventory pile I found a piece that appears to have been a shaft coupler. Right size bore and already broached! All I had to do was clean it up and part off a piece of suitable length. WooHoo!
So now we take some measurements and compute what belts we need. Other tasks include making and mounting a battery box and relocating the chute rotation crank to clear the cylinder on the motor. He'll be down this weekend and we'll deal with that.
He clears his driveway with an ancient MTD 10/24 walk behind and the motor has been seriously tired for a while. When the electric start defecated in the sleeping apparatus, he enquired about putting a new motor on it.
Horror Fright doesn't stock a 10 horse horizontal shaft, so (I'm so proud!) he went bigger. Got a 13 horse just like the one I put on my blower. Lugged all the pieces-parts down Monday and we designed and built an adapter plate to mount the motor and started on figuring out belts and pulleys.
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Turned out to be easier to bore out the original 4-piece (four pulley "halves" sandwiched together to form a double pulley) set up. LOTS easier to broach too. On the original setup, the bores were 7/8ths and had a male tang in the bore that fit the keyway on the crankshaft. Used a carbide rotary bit and a die grinder to take the tangs out then bored and broached as normal.
Next thing was to make a spacer between the rear (wheel drive) pulley and the blower drive pulleys. Plan A was to find some suitable round stock and bore it out and broach it. Whilst rummaging around in my Inactive Inventory pile I found a piece that appears to have been a shaft coupler. Right size bore and already broached! All I had to do was clean it up and part off a piece of suitable length. WooHoo!
So now we take some measurements and compute what belts we need. Other tasks include making and mounting a battery box and relocating the chute rotation crank to clear the cylinder on the motor. He'll be down this weekend and we'll deal with that.