184 vs 185

[The Curmudgeon]

What changed betweem the 184 an 185 cub C60 that netted the extra HP on the 184?

[Eugene]

Mostly upped the engine RPMs and some other mild engine modifications. Made good advertising, the lawnmower horsepower.

[The Curmudgeon]

So Internally nothing is really new or up dated from what I can tell by the specs..

So in theory if one were to tweak say the governor, one could squeeze a little more out of the 185?

[Eugene]

The C60 engine's peak torque at 1600 RPMs. Above 1600 RPMs the torque fall off, but the horsepower goes up.

You can adjust the engine's RPMs up or down. 1600 RPMs is the sweet spot, most engine power/torque.

[Ole Timey Farmin]

Mathematically, horsepower equals torque multiplied by rpm. H = T x rpm/5252. So at 5252 rpm every engine is supposed to have the same horsepower and torque numbers. In real world situations this isn't always true. Many factors contributes to this such as engine efficiency. Some engine's can even be over 100% usually they are turbo'ed or blown but some naturally aspired engine's have reached 105%. All that to say that without me seeing a printout of a C60 engine's torque n HP. It's impossible to say that just because 1600 RPM is where it max torque is, it might or might not be the sweet spot. As an example if at 1600 rpm's max torque but you increase rpm by 10% and torque decreased by 5% then the HP increase is greater than the torque loss, it's mathematics. But numbers don't always show everything. As I've heard that the increase in rpm's to make the 184 higher HP doesn't help much as the torque does fall off quickly and increasing RPM that much also increased wear n tare as friction is also not constant but exponentially increases as the RPM's increase. Long story, short, just cause an engine may be able to rev to 10,000 RPM's. It might not be the best thing to do.

[The Curmudgeon]

Thank you that explains the Hp change between the numbered Lo Boys. I was just very currious as to how the same engine was listed with 3 diffrent Hp ratings.

[Ole Timey Farmin]

Thank you that explains the Hp change between the numbered Lo Boys. I was just very currious as to how the same engine was listed with 3 diffrent Hp ratings.

From my understanding the major leap in HP came when they switched to aluminum pistons and a different camshaft. They also increased rpm but another odd thing was they never put the highest HP in the cub's. That alone tells me it was for show, NOT REAL WORK. As the cubs vs the #'ed lowboys we're more of a work horse.

[Eugene]

viewtopic.php?t=93004

Above a 2016 discussion on the purpose of the Numbered Cubs.

[BullDAWG]

Wasn't trying to diss the numbered lowboys. Just knew they didn't have many implements like the Cub lowboy.
BTW I'm Ole Timey Farmin, finally got back in this, my original account. Woof woof y'all. [( ' - ' )]

[The Curmudgeon]

Didnt really take it as anyone beating down the numbered Lo Boys. Im probly asking a lot out of mine. But it has the 3pt set up and the creeper gear. I also scored the rototiller and 54" snow plow. Which Ive used to push dirt and trees and pretty much everything its not supposed to do. Between my Little Murray with a 46 inch mower which thinks its a brush hog..... Ive managed to mostly clean and clear my horse pasture... The 185 Lo Boys job is to move 500 lb round bales with the 3pt spear. And drag a manure wagon, and plow the drive when the winter hits... I do have tire chains on my wish list as it sports the turff tires.

So far Ive worked it pretty hard. Dragged out a 30" by 20 ft Beech cant that, at the least weight as much as the tractor. Had to get the weight on the 3pt to pull it and the front end never touched the ground...

[outdoors4evr]

So far Ive worked it pretty hard.

Sounds like you use your 185 the way I abuse my 184. I have the same implements and they do work the tractor pretty hard.
Chains and wheel spacers greatly improve the winter traction.

[The Curmudgeon]

What size wheel spacers are you running? Ive two diffrent widths on them... also how long are your chains?

[Eugene]

Mathematically, horsepower equals torque multiplied by rpm. H = T x rpm/5252. So at 5252 rpm every engine is supposed to have the same horsepower and torque numbers. In real world situations this isn't always true. Many factors contributes to this such as engine efficiency. Some engine's can even be over 100% usually they are turbo'ed or blown but some naturally aspired engine's have reached 105%. All that to say that without me seeing a printout of a C60 engine's torque n HP. It's impossible to say that just because 1600 RPM is where it max torque is, it might or might not be the sweet spot. As an example if at 1600 rpm's max torque but you increase rpm by 10% and torque decreased by 5% then the HP increase is greater than the torque loss, it's mathematics. But numbers don't always show everything. As I've heard that the increase in rpm's to make the 184 higher HP doesn't help much as the torque does fall off quickly and increasing RPM that much also increased wear n tare as friction is also not constant but exponentially increases as the RPM's increase. Long story, short, just cause an engine may be able to rev to 10,000 RPM's. It might not be the best thing to do.

Dynamometer tests on a number of Cubs from years ago. The chart varied a bit from Cub to Cub.

[outdoors4evr]

My wheel spacers are like these. I think they are 2.5"
https://www.robertstractor.com/internat ... pacer.html

Chains... The last two ladders are 78" apart and the overall last link of the side chains are 84" (not including the latch which is 3")
These fit the large balloon tires that were typical on the 184. These would probably not work great for the narrower turf tires that typically are found on the 154.