How'd it go today?

helped out a buddy on a job, white and red oaks in a front yard, he spent all day yesterday in the lift and got most of the brush off but wasn't having a good time setting the lift up and has zero experience with cribbing so he called me, I didn't really have enough but we made it work, planning to mill up the rest of my hemlock pile and make rough sawn 4x6's since I'm running into more and more lift work, and those dang nifty 50's won't level up on anything over about 5 degrees, we had 6 or 7 lift setups and had to throw wood for every single setup, usually 5-6 rows high, just not fun at all


I want an SD64 so bad now, but itll wait a while yet, one day, one day, an SD90 would be amazing if they ever do come out with one
 
tractor pull happening this weekend, wish our allis was running because theres no class for my dump truck, and I really want to go pull just for shits and giggles
 

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I’ve seen guys with big mil trucks walk away with the sled. Like off to the parking lot 😆

Story is the truck is a ‘73 with most components rebuilt in ‘90s which it makes it more unfortunate they oversped it and threw a rod. Very heavy pistons, rods don’t like RPM. Piston lodged in upper bore. They drove it home. Presumably the low half of rod beat all the holes in the block until it was in pieces in the oil pan or ejected. I test ran it to see if the air compressor, alternator, water pump, etc. worked. They did.



I bypassed the fuel system…

Radiator leaks, common. Big old school heavy, truck shakes them apart.

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tractor pull happening this weekend, wish our allis was running because theres no class for my dump truck, and I really want to go pull just for shits and giggles
It's a good way to break stuff. Two things to consider:

1) Pulling a sled in low gear allows time for the engine to reach peak output. Peak power + lowest gear = maximum stress on the drive train. Not to mention longer time before it stalls...

2) As the load increases slowing the truck to a stop, power is actually going back through the drive train in reverse. Acceleration requires power, acceleration is a change in speed, so to slow something (accelerating it in the opposite direction) means power is going in backward, and depending on how fast the truck is forced to slow down, the drive train could experience way more torque than the engine could ever supply.

In pulling videos, trucks often break just before they stall, after having experienced higher than maximum torque for a few seconds. The weight of the sled, if on the truck, can increase traction such that the wheels don't slip as easily as they would if a driveshaft starts twisting, so it gets twisted until it snaps.
 
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