105 struggles after 2hrs of snowthrowing

[Yosemite Sam]

I gotta agree with what the other guys have said.

I've never done any real research on the subject but I'm willing to bet that you well never do a harder work with your Cub than throwing snow.

That said; the only thing that I have to add is, if you were throwing snow "into" the next row/s then you are moving a heavier load with each pass. Even though that is pretty-much how it's done, that's a lot of weight for any machine, let alone a 10 hp hydrostat tractor. Not saying that your Cub isn't up to the task... It just can't do the same work that a 14 or 16 HP Cub can.

The backfiring issue could be any number of things from overheating, to a wet coil/plug/plug wire.

Without being there, I would venture to guess that most of the problems that you encountered were related to the outside temperature, the addition of water and ice and working a 10 hp engine very hard.

Since you can't do anything about the outside temperature, try keeping the engine compartment of your tractor clear of snow, ice and water. Also be sure that the engine in your tractor is tuned to run at it's optimum. It is my belief that running any kind of equipment when it's very cold, is harder on the equipment that running it when it's hot outside and minor issues tend to be exaggerated in colder temperatures.

You didn't mention how much snow was on the ground.

[jimbob200521]

Originally Posted by cmouta

Is that a fair comparison? good mileage from highway driving comes from overdrive gearing that brings the RPM of the engine down for a long time. Less effort to move a moving car, less throttle, less air, less fuel used over time.

In stop and go, the engine is probably seeing higher revving through gears working harder to get you to get you moving, which is where the worse fuel economy comes from.

So when I think of comparing a car to WOT on my tractor, I imagine max RPM, max air, max fuel being burnt hence my thoughts about bringing throttle down when not loading.

But admittedly I really don't know anything about tractor engine design. Maybe its more efficient at WOT? I picture the engine sitting there pegged from being WOT, waiting to have that energy used for working my Hydro pump or for PTO and its being wasted if not doing either. Again, I don't know if that is right. That's just how I imagine it.

It's a difficult explanation, and I'm not going to put it very eloquently but here goes. Yes, at WOT, the engine is going as fast as it has been designed to go but the real fuel usage comes from load. The engine will use more fuel at WOT under full load than it will at WOT with no load because it takes less fuel and air to make that piston go up and down when there is no load on the motor. Plus like I believe J-Mech said, revving up and down uses more fuel as the motor has to work harder to get back up to 3600rpm thereby negating any fuel savings offered by lowering rpm's while backing up and/or disengaging the PTO. Hope this helps!

Oh, and these single cylinder engines, imho, literally sip gas like a fine wine. By comparison, the 2 cylinder KT-17 in my 682 chugs the stuff like a ravenous beast that's been starved in the desert for a week. Moral of the story; don't worry about the gas usage.

[J-Mech]

Originally Posted by cmouta

Is that a fair comparison? good mileage from highway driving comes from overdrive gearing that brings the RPM of the engine down for a long time. Less effort to move a moving car, less throttle, less air, less fuel used over time.

In stop and go, the engine is probably seeing higher revving through gears working harder to get you to get you moving, which is where the worse fuel economy comes from.

So when I think of comparing a car to WOT on my tractor, I imagine max RPM, max air, max fuel being burnt hence my thoughts about bringing throttle down when not loading.

But admittedly I really don't know anything about tractor engine design. Maybe its more efficient at WOT? I picture the engine sitting there pegged from being WOT, waiting to have that energy used for working my Hydro pump or for PTO and its being wasted if not doing either. Again, I don't know if that is right. That's just how I imagine it.

I am by no means going to debate this. Been mechanicing for a long time.... small engines to dozers. I run my own shop. I promise, even if it saves fuel, and I'm sure it is at the minimum a wash, it's way harder on the motor than running WOT all the time. The motor is far from "pegged" when under no load.

[cmouta]

it was about 5 inches of fairly fluffy stuff but there was a side of the driveway I was stabbing at closer to 10" built from a previous snowfall last week. I eventually bailed on that side as there was more snow to clear.

ugh, just realized the most previous snow fall two days ago, not last weeks! this is getting old quick!


this was from last weeks snowfall:

[cmouta]

Originally Posted by J-Mech

I am by no means going to debate this. Been mechanicing for a long time.... small engines to dozers. I run my own shop. I promise, even if it saves fuel, and I'm sure it is at the minimum a wash, it's way harder on the motor than running WOT all the time. The motor is far from "pegged" when under no load.

Sorry, I wasn't trying to disagree, just trying to explain my point of view, however wrong it may have been, so maybe someone could correct it. I appreciate the insight!

[J-Mech]

Originally Posted by cmouta

Sorry, I wasn't trying to disagree, just trying to explain my point of view, however wrong it may have been, so maybe someone could correct it. I appreciate the insight!

I didn't mean to sound gruff.... wasn't trying to be.

[Sam Mac]

Originally Posted by cmouta

it was about 5 inches of fairly fluffy stuff but there was a side of the driveway I was stabbing at closer to 10" built from a previous snowfall last week. I eventually bailed on that side as there was more snow to clear.

ugh, just realized the most previous snow fall two days ago, not last weeks! this is getting old quick!


this was from last weeks snowfall:

Wish my drive was that flat when I lived in CT. This was the winter that did it for me and what I used to plow. Date was 1/12/11

[cmouta]

Originally Posted by Sam Mac

Wish my drive was that flat when I lived in CT. This was the winter that did it for me and what I used to plow. Date was 1/12/11

Nice equipment though!

man last year we had a realllly bad early storm but I wasn't a home owner then!

I'd love to do a proper tune up, fix my hydro leak and just go through it but I have a tendency to be a meticulous(slow) worker and don't want to get caught with my snow pants down.

Last year I bought my first motorcycle, a non running 1982 honda cb650sc that had been sitting for 10 years. Cleaned the fuel tank, replaced a pulse generator ignition pickup, full tuneup, rebuilt the carbs, balanced them, dialed in the fuel mixture. I figured if I was going to own a motorcycle, I better know how to fix everything on it. My friends make fun of me for taking over a year get it running properly but it runs alot better than their newer bikes!

[Sam Mac]

Originally Posted by cmouta

Nice equipment though!

man last year we had a realllly bad early storm but I wasn't a home owner then!

I'd love to do a proper tune up, fix my hydro leak and just go through it but I have a tendency to be a meticulous(slow) worker and don't want to get caught with my snow pants down.

Last year I bought my first motorcycle, a non running 1982 honda cb650sc that had been sitting for 10 years. Cleaned the fuel tank, replaced a pulse generator ignition pickup, full tuneup, rebuilt the carbs, balanced them, dialed in the fuel mixture. I figured if I was going to own a motorcycle, I better know how to fix everything on it. My friends make fun of me for taking over a year get it running properly but it runs alot better than their newer bikes!

Sounds like you are going to fit in just fine with this group.

[MinnesotaCadet]

Originally Posted by darkminion_17

I agree on what Sam said, keep the pto on .Chirping sound may be a blown headgasket.

I don't think The chirping is a blown headgasket. I just replaced the one of my 1450 and it still chirps on start up. I think it has something to do with the Thrower.