GC1710 vs GC1720

[AxleHub]

No, no.... I bought my 1648 in Jan of '14, as the 1700's were rolling out. MF changed the warranty from 3 yrs to 5 starting last year, but because mine was an "older" model it didn't qualify for the new warranty program.

Tso,

I guess I'm looking for a little clarification from you or others. As I understand it . . Massey changed its warranty program in 2014? Was it a change to all tractors or just a specific few?

Now the GC1700s came out in model year 2013 many of them still unsold new in dealer locations (every dealer I've checked has at least one or more yet).

Tso you said that even though you bought in 2014 . . because your product choice was a NEW but not current model . . it qualified for the 3 year but not the newly changed 5 year warranty of 2014 . . . does that mean all these new GC1700s that are model year 2013 would only be a 3 year warranty?

For other readers too: Over the last 3 weeks from 6 different dealers I've gotten
bids on more than 15 gc1700 machines. Fully more than half of those machines are or likely are 2013 models. some with model year undisclosed . . but in each case I know they've had them for quite a period of time. If what TSO has explained turns out to be true . . . I know I would want a 5 year . . not a 3 year warranty. I'm sure other wpuld expect that too.

 

[TSO]

From what I understand, with the rollout of the tier 4 tractors, and with the 1700 series, the warranty program changed to 5 years.

Obviously I can't speak for MF, but I would assume it includes all of the new models.

 

[Fiziksgeek]

Backing up a bit to the part about the engine and PTO RPMs.

If you read the manual, it will state what at what engine RPM the 540 PTO rpm is reached. It will be at different engine RPMs for the GC1705/1710 and the GC1715/1720. The latter will be ~400 RPMs higher. You will also see an indicator on the tachometer of the tractor which will indicate the engine RPMs that produce correct PTO rpms.

The PTO speed is linearly dependent upon engine RPMs.

Tractors are designed such that the max horsepower is developed very near the correct engine RPM to get the correct PTO rpms. This way you can utilize the available HP for attachments.

 

[MFRED]

Starting January of 14 the gc series and the new 1700 series compacts went to the 5 year power train warranty. It's based off of retail date not date of manufacture. Tso's tractor didn't qualify because it was a 1600 series. Any 1500 series sold would also not qualify. Just the 3-year on those

 

[AxleHub]

It never ceases to amaze me how the power of group knowledge can foster new shared learning and knowledge.

 

[irvingj]

"The PTO speed is linearly dependent upon engine RPMs" Ditto. The sound (frequency/pitch) of the PTO-powered attachment is clearly tied directly to engine RPM; check it for yourself.

If the going is easier, less RPM (and less PTO speed) is required, whether it be a snowblower, tiller, or mower deck (my tools).

The PTOs, both rear and mid-mount, are totally gear-driven, right off the engine and into the gears in the front section of the transmission. No hydro involved with PTOs. Proper RPM for max rated power is the RPM noted on the tachometer, no matter which tractor it is, but that's not to say you can't run it at a lower RPM if the load is lighter.

 

[cdaigle430]

"The PTO speed is linearly dependent upon engine RPMs" Ditto. The sound (frequency/pitch) of the PTO-powered attachment is clearly tied directly to engine RPM; check it for yourself.

If the going is easier, less RPM (and less PTO speed) is required, whether it be a snowblower, tiller, or mower deck (my tools).

The PTOs, both rear and mid-mount, are totally gear-driven, right off the engine and into the gears in the front section of the transmission. No hydro involved with PTOs. Proper RPM for max rated power is the RPM noted on the tachometer, no matter which tractor it is, but that's not to say you can't run it at a lower RPM if the load is lighter.

Yep-I also like to think of it like this;
Tractor has two PTOs, one rated at 540 and the other 2000. Manufacturer tells you that the nominal HP rating is at a certain engine RPM which is marked on the tach. The impliment manufacturer for example of a brush hog, tiller or snowblower also has a recommended rpm for maximum useage and generally they sync up with the tractor and the implement. The manufacture of a tiller also knows you have to have a certain HP to maintain the nominal rpm of the device in order for it to work properly. Too few HP means you will not be able to maintain the recommended RPM for nominal use of that implement-now I just gone crosseyed

 

[AxleHub]

"The PTO speed is linearly dependent upon engine RPMs" Ditto. The sound (frequency/pitch) of the PTO-powered attachment is clearly tied directly to engine RPM; check it for yourself.

If the going is easier, less RPM (and less PTO speed) is required, whether it be a snowblower, tiller, or mower deck (my tools).

The PTOs, both rear and mid-mount, are totally gear-driven, right off the engine and into the gears in the front section of the transmission. No hydro involved with PTOs. Proper RPM for max rated power is the RPM noted on the tachometer, no matter which tractor it is, but that's not to say you can't run it at a lower RPM if the load is lighter.

Thanks for your input. So then if a gc1705 or gc1710 develop max hp at 2600 rpm and the gc1715 and gc1720 develop 2.5 more hp at 3000 rpm with virtually identical engines . . . The same level of hp for all 4 models is likely developed at 2600 rpm. So if the ptos run slightly less rpm but with same hp . . Isn't that more efficient and less wear and tear on the equipment?

 

[madhatter]

Thanks for your input. So then if a gc1705 or gc1710 develop max hp at 2600 rpm and the gc1715 and gc1720 develop 2.5 more hp at 3000 rpm with virtually identical engines . . . The same level of hp for all 4 models is likely developed at 2600 rpm. So if the ptos run slightly less rpm but with same hp . . Isn't that more efficient and less wear and tear on the equipment?

Implements should run at the recommended 540RPM ( rear ) or 2000RPM ( mid/mower ). To reach that speed the 1710 does it at about 2600 engine RPM, the 1720 does it at about 3000 rpm ( yes the 1720 does it with 2+ hp more ) Same engine... tweaked differently with I presume injection pump, rev limiter and PTO gearing. For myself, due to delivery time, $1700 more for the 1720 ( yes there is physical benefits which I stated ) and increased engine RPM needed to reach the recommend PTO speed..... I chose the 1710. One could argue that less RPM is less wear and tear on these Diesels....

 

[Fiziksgeek]

Thanks for your input. So then if a gc1705 or gc1710 develop max hp at 2600 rpm and the gc1715 and gc1720 develop 2.5 more hp at 3000 rpm with virtually identical engines . . . The same level of hp for all 4 models is likely developed at 2600 rpm. So if the ptos run slightly less rpm but with same hp . . Isn't that more efficient and less wear and tear on the equipment?

Running at a lower engine RPM will yield a lower PTO RPM. This may or may not make a difference in the performance of the attachment. For example, if running a mower, the blades will spin slower, at some point, the mower won't mow very well...So it's not necessarily about power, it's about designed operating speed.

Theoretically speaking, an engine has so many revolutions in its life...sooooo, the slower you run them, the longer the engine will last. I'm not sure how JD or Kubota count their hours, but I believe my GC2400 count hours at 1800 RPMs. So if you run the engine at 1800 RPMs, 1 hours on the hour meter is 60 minutes of time. So, running at 2200 RPMs for 60 minutes should put 1.2 hours on the hour meter. Is that a big deal? I don't know....I've had my tractor for 2 years, and only have 135 hours on it...Should last a few thousand if properly maintained..